/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/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-FA-NoLbe-McrStrategy.epf -i ../../../trunk/examples/svcomp/pthread-wmm/safe012_tso.opt.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-b981219 [2020-04-18 19:30:25,485 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-04-18 19:30:25,487 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-04-18 19:30:25,500 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-04-18 19:30:25,501 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-04-18 19:30:25,502 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-04-18 19:30:25,503 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-04-18 19:30:25,505 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-04-18 19:30:25,506 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-04-18 19:30:25,507 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-04-18 19:30:25,508 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-04-18 19:30:25,509 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-04-18 19:30:25,510 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-04-18 19:30:25,511 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-04-18 19:30:25,512 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-04-18 19:30:25,513 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-04-18 19:30:25,514 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-04-18 19:30:25,515 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-04-18 19:30:25,516 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-04-18 19:30:25,519 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-04-18 19:30:25,520 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-04-18 19:30:25,521 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-04-18 19:30:25,522 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-04-18 19:30:25,523 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-04-18 19:30:25,526 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-04-18 19:30:25,526 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-04-18 19:30:25,527 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-04-18 19:30:25,528 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-04-18 19:30:25,528 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-04-18 19:30:25,529 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-04-18 19:30:25,529 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-04-18 19:30:25,530 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-04-18 19:30:25,531 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-04-18 19:30:25,532 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-04-18 19:30:25,533 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-04-18 19:30:25,533 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-04-18 19:30:25,534 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-04-18 19:30:25,534 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-04-18 19:30:25,534 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-04-18 19:30:25,535 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-04-18 19:30:25,536 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-04-18 19:30:25,537 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-FA-NoLbe-McrStrategy.epf [2020-04-18 19:30:25,552 INFO L113 SettingsManager]: Loading preferences was successful [2020-04-18 19:30:25,553 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-04-18 19:30:25,554 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-04-18 19:30:25,554 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-04-18 19:30:25,554 INFO L138 SettingsManager]: * Use SBE=true [2020-04-18 19:30:25,554 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-04-18 19:30:25,555 INFO L138 SettingsManager]: * sizeof long=4 [2020-04-18 19:30:25,555 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-04-18 19:30:25,555 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-04-18 19:30:25,555 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-04-18 19:30:25,555 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-04-18 19:30:25,555 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-04-18 19:30:25,556 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-04-18 19:30:25,556 INFO L138 SettingsManager]: * sizeof long double=12 [2020-04-18 19:30:25,556 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-04-18 19:30:25,556 INFO L138 SettingsManager]: * Use constant arrays=true [2020-04-18 19:30:25,556 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-04-18 19:30:25,557 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-04-18 19:30:25,557 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-04-18 19:30:25,557 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-04-18 19:30:25,557 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-04-18 19:30:25,557 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-04-18 19:30:25,558 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-04-18 19:30:25,558 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-04-18 19:30:25,558 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-04-18 19:30:25,558 INFO L138 SettingsManager]: * Trace refinement strategy=MCR [2020-04-18 19:30:25,558 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-04-18 19:30:25,559 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2020-04-18 19:30:25,559 INFO L138 SettingsManager]: * Trace refinement strategy used in MCR=CAMEL [2020-04-18 19:30:25,559 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-04-18 19:30:25,559 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-04-18 19:30:25,837 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2020-04-18 19:30:25,851 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-04-18 19:30:25,857 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-04-18 19:30:25,858 INFO L271 PluginConnector]: Initializing CDTParser... [2020-04-18 19:30:25,858 INFO L275 PluginConnector]: CDTParser initialized [2020-04-18 19:30:25,860 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe012_tso.opt.i [2020-04-18 19:30:25,931 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0b2c195ac/6936b01ab2e34732b77a3b443fd9fc1a/FLAG9ee5c9075 [2020-04-18 19:30:26,457 INFO L306 CDTParser]: Found 1 translation units. [2020-04-18 19:30:26,458 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe012_tso.opt.i [2020-04-18 19:30:26,481 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0b2c195ac/6936b01ab2e34732b77a3b443fd9fc1a/FLAG9ee5c9075 [2020-04-18 19:30:26,765 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0b2c195ac/6936b01ab2e34732b77a3b443fd9fc1a [2020-04-18 19:30:26,774 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-04-18 19:30:26,798 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2020-04-18 19:30:26,800 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-04-18 19:30:26,800 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-04-18 19:30:26,804 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-04-18 19:30:26,805 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.04 07:30:26" (1/1) ... [2020-04-18 19:30:26,808 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@60020494 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 07:30:26, skipping insertion in model container [2020-04-18 19:30:26,808 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.04 07:30:26" (1/1) ... [2020-04-18 19:30:26,816 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-04-18 19:30:26,883 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-04-18 19:30:27,406 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-04-18 19:30:27,419 INFO L203 MainTranslator]: Completed pre-run [2020-04-18 19:30:27,494 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-04-18 19:30:27,566 INFO L208 MainTranslator]: Completed translation [2020-04-18 19:30:27,567 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 07:30:27 WrapperNode [2020-04-18 19:30:27,567 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-04-18 19:30:27,568 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-04-18 19:30:27,568 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-04-18 19:30:27,568 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-04-18 19:30:27,579 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 07:30:27" (1/1) ... [2020-04-18 19:30:27,599 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 07:30:27" (1/1) ... [2020-04-18 19:30:27,621 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-04-18 19:30:27,622 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-04-18 19:30:27,622 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-04-18 19:30:27,622 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-04-18 19:30:27,631 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 07:30:27" (1/1) ... [2020-04-18 19:30:27,631 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 07:30:27" (1/1) ... [2020-04-18 19:30:27,635 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 07:30:27" (1/1) ... [2020-04-18 19:30:27,635 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 07:30:27" (1/1) ... [2020-04-18 19:30:27,643 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 07:30:27" (1/1) ... [2020-04-18 19:30:27,645 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 07:30:27" (1/1) ... [2020-04-18 19:30:27,647 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 07:30:27" (1/1) ... [2020-04-18 19:30:27,651 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-04-18 19:30:27,662 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-04-18 19:30:27,662 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-04-18 19:30:27,662 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-04-18 19:30:27,663 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 07:30:27" (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 [2020-04-18 19:30:27,723 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-04-18 19:30:27,723 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2020-04-18 19:30:27,723 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-04-18 19:30:27,724 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-04-18 19:30:27,724 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2020-04-18 19:30:27,724 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2020-04-18 19:30:27,724 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2020-04-18 19:30:27,724 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2020-04-18 19:30:27,725 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2020-04-18 19:30:27,725 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2020-04-18 19:30:27,725 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2020-04-18 19:30:27,725 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-04-18 19:30:27,725 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-04-18 19:30:27,727 WARN L205 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2020-04-18 19:30:28,142 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-04-18 19:30:28,143 INFO L295 CfgBuilder]: Removed 8 assume(true) statements. [2020-04-18 19:30:28,147 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.04 07:30:28 BoogieIcfgContainer [2020-04-18 19:30:28,147 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-04-18 19:30:28,148 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-04-18 19:30:28,149 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-04-18 19:30:28,152 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-04-18 19:30:28,152 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.04 07:30:26" (1/3) ... [2020-04-18 19:30:28,153 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3ab9c5d4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.04 07:30:28, skipping insertion in model container [2020-04-18 19:30:28,153 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 07:30:27" (2/3) ... [2020-04-18 19:30:28,154 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3ab9c5d4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.04 07:30:28, skipping insertion in model container [2020-04-18 19:30:28,154 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.04 07:30:28" (3/3) ... [2020-04-18 19:30:28,156 INFO L109 eAbstractionObserver]: Analyzing ICFG safe012_tso.opt.i [2020-04-18 19:30:28,166 WARN L146 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2020-04-18 19:30:28,166 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-04-18 19:30:28,174 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-04-18 19:30:28,175 INFO L340 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2020-04-18 19:30:28,207 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 19:30:28,208 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 19:30:28,208 WARN L315 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 19:30:28,208 WARN L315 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 19:30:28,210 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 19:30:28,210 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 19:30:28,211 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 19:30:28,212 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 19:30:28,212 WARN L315 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 19:30:28,212 WARN L315 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 19:30:28,213 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 19:30:28,213 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 19:30:28,214 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 19:30:28,214 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 19:30:28,214 WARN L315 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 19:30:28,214 WARN L315 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 19:30:28,215 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 19:30:28,215 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 19:30:28,220 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 19:30:28,221 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 19:30:28,221 WARN L315 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 19:30:28,221 WARN L315 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 19:30:28,236 WARN L315 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 19:30:28,236 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 19:30:28,237 WARN L315 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 19:30:28,237 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 19:30:28,250 WARN L315 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 19:30:28,250 WARN L315 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 19:30:28,250 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 19:30:28,251 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 19:30:28,266 INFO L251 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2020-04-18 19:30:28,281 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-04-18 19:30:28,281 INFO L376 AbstractCegarLoop]: Hoare is true [2020-04-18 19:30:28,281 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-04-18 19:30:28,281 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-04-18 19:30:28,282 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-04-18 19:30:28,282 INFO L380 AbstractCegarLoop]: Difference is false [2020-04-18 19:30:28,282 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-04-18 19:30:28,284 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-04-18 19:30:28,306 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 79 places, 71 transitions, 157 flow [2020-04-18 19:30:28,943 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 8473 states. [2020-04-18 19:30:28,947 INFO L276 IsEmpty]: Start isEmpty. Operand 8473 states. [2020-04-18 19:30:28,981 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2020-04-18 19:30:28,982 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 19:30:28,983 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 19:30:28,984 INFO L427 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 19:30:28,990 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 19:30:28,991 INFO L82 PathProgramCache]: Analyzing trace with hash 642340523, now seen corresponding path program 1 times [2020-04-18 19:30:28,998 INFO L163 FreeRefinementEngine]: Executing refinement strategy MCR [2020-04-18 19:30:28,998 INFO L354 FreeRefinementEngine]: Using trace check StrategyModuleMcr [1761628807] [2020-04-18 19:30:29,015 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 19:30:29,033 INFO L259 McrAutomatonBuilder]: Finished intersection with 38 states and 37 transitions. [2020-04-18 19:30:29,035 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states. [2020-04-18 19:30:29,036 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2020-04-18 19:30:29,037 INFO L105 Mcr]: ---- MCR iteration 0 ---- [2020-04-18 19:30:29,037 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 19:30:29,037 INFO L82 PathProgramCache]: Analyzing trace with hash 642340523, now seen corresponding path program 2 times [2020-04-18 19:30:29,041 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 19:30:29,042 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [749818032] [2020-04-18 19:30:29,042 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 19:30:29,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 19:30:29,526 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 19:30:29,527 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [749818032] [2020-04-18 19:30:29,528 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 19:30:29,528 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-04-18 19:30:29,529 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 19:30:29,533 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 19:30:29,541 INFO L259 McrAutomatonBuilder]: Finished intersection with 38 states and 37 transitions. [2020-04-18 19:30:29,541 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 19:30:29,602 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 0 times. [2020-04-18 19:30:29,606 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-04-18 19:30:29,607 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-04-18 19:30:29,609 INFO L87 Difference]: Start difference. First operand 38 states. Second operand 6 states. [2020-04-18 19:30:29,730 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 19:30:29,730 INFO L93 Difference]: Finished difference Result 38 states and 37 transitions. [2020-04-18 19:30:29,731 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 37 transitions. [2020-04-18 19:30:29,731 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-18 19:30:29,732 INFO L354 FreeRefinementEngine]: Using interpolant generator StrategyModuleMcr [1761628807] [2020-04-18 19:30:29,733 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-04-18 19:30:29,733 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-04-18 19:30:29,733 INFO L156 tionRefinementEngine]: Using interpolant automaton builder StrategyModuleMcr [1761628807] [2020-04-18 19:30:29,735 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-04-18 19:30:29,735 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy MCR [2020-04-18 19:30:29,740 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-04-18 19:30:29,741 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2020-04-18 19:30:29,741 INFO L87 Difference]: Start difference. First operand 8473 states. Second operand 6 states. [2020-04-18 19:30:30,141 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 19:30:30,142 INFO L93 Difference]: Finished difference Result 12827 states and 44765 transitions. [2020-04-18 19:30:30,142 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-04-18 19:30:30,144 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 37 [2020-04-18 19:30:30,145 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 19:30:30,226 INFO L225 Difference]: With dead ends: 12827 [2020-04-18 19:30:30,227 INFO L226 Difference]: Without dead ends: 4532 [2020-04-18 19:30:30,234 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2020-04-18 19:30:30,314 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4532 states. [2020-04-18 19:30:30,557 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4532 to 4532. [2020-04-18 19:30:30,559 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4532 states. [2020-04-18 19:30:30,594 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4532 states to 4532 states and 15535 transitions. [2020-04-18 19:30:30,596 INFO L78 Accepts]: Start accepts. Automaton has 4532 states and 15535 transitions. Word has length 37 [2020-04-18 19:30:30,598 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 19:30:30,599 INFO L479 AbstractCegarLoop]: Abstraction has 4532 states and 15535 transitions. [2020-04-18 19:30:30,602 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-04-18 19:30:30,602 INFO L276 IsEmpty]: Start isEmpty. Operand 4532 states and 15535 transitions. [2020-04-18 19:30:30,621 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2020-04-18 19:30:30,622 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 19:30:30,627 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 19:30:30,628 INFO L427 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 19:30:30,628 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 19:30:30,629 INFO L82 PathProgramCache]: Analyzing trace with hash 240380524, now seen corresponding path program 1 times [2020-04-18 19:30:30,629 INFO L163 FreeRefinementEngine]: Executing refinement strategy MCR [2020-04-18 19:30:30,629 INFO L354 FreeRefinementEngine]: Using trace check StrategyModuleMcr [1341039426] [2020-04-18 19:30:30,631 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 19:30:30,633 INFO L259 McrAutomatonBuilder]: Finished intersection with 80 states and 119 transitions. [2020-04-18 19:30:30,636 INFO L276 IsEmpty]: Start isEmpty. Operand 80 states. [2020-04-18 19:30:30,637 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2020-04-18 19:30:30,637 INFO L105 Mcr]: ---- MCR iteration 0 ---- [2020-04-18 19:30:30,638 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 19:30:30,638 INFO L82 PathProgramCache]: Analyzing trace with hash 240380524, now seen corresponding path program 2 times [2020-04-18 19:30:30,638 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 19:30:30,639 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [215489079] [2020-04-18 19:30:30,639 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 19:30:30,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 19:30:30,967 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 19:30:30,968 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [215489079] [2020-04-18 19:30:30,968 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 19:30:30,968 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-04-18 19:30:30,969 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 19:30:30,973 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 19:30:30,979 INFO L259 McrAutomatonBuilder]: Finished intersection with 68 states and 95 transitions. [2020-04-18 19:30:30,980 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 19:30:31,034 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 0 times. [2020-04-18 19:30:31,035 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-04-18 19:30:31,036 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2020-04-18 19:30:31,036 INFO L87 Difference]: Start difference. First operand 80 states. Second operand 7 states. [2020-04-18 19:30:31,101 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 19:30:31,101 INFO L93 Difference]: Finished difference Result 80 states and 119 transitions. [2020-04-18 19:30:31,101 INFO L276 IsEmpty]: Start isEmpty. Operand 80 states and 119 transitions. [2020-04-18 19:30:31,102 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-18 19:30:31,102 INFO L354 FreeRefinementEngine]: Using interpolant generator StrategyModuleMcr [1341039426] [2020-04-18 19:30:31,103 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-04-18 19:30:31,103 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-04-18 19:30:31,103 INFO L156 tionRefinementEngine]: Using interpolant automaton builder StrategyModuleMcr [1341039426] [2020-04-18 19:30:31,104 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-04-18 19:30:31,104 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy MCR [2020-04-18 19:30:31,104 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-04-18 19:30:31,105 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2020-04-18 19:30:31,105 INFO L87 Difference]: Start difference. First operand 4532 states and 15535 transitions. Second operand 7 states. [2020-04-18 19:30:31,279 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 19:30:31,280 INFO L93 Difference]: Finished difference Result 5092 states and 17268 transitions. [2020-04-18 19:30:31,280 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-04-18 19:30:31,280 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 39 [2020-04-18 19:30:31,281 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 19:30:31,311 INFO L225 Difference]: With dead ends: 5092 [2020-04-18 19:30:31,311 INFO L226 Difference]: Without dead ends: 4112 [2020-04-18 19:30:31,313 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=46, Invalid=86, Unknown=0, NotChecked=0, Total=132 [2020-04-18 19:30:31,336 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4112 states. [2020-04-18 19:30:31,452 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4112 to 4112. [2020-04-18 19:30:31,452 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4112 states. [2020-04-18 19:30:31,479 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4112 states to 4112 states and 13999 transitions. [2020-04-18 19:30:31,479 INFO L78 Accepts]: Start accepts. Automaton has 4112 states and 13999 transitions. Word has length 39 [2020-04-18 19:30:31,480 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 19:30:31,480 INFO L479 AbstractCegarLoop]: Abstraction has 4112 states and 13999 transitions. [2020-04-18 19:30:31,480 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-04-18 19:30:31,480 INFO L276 IsEmpty]: Start isEmpty. Operand 4112 states and 13999 transitions. [2020-04-18 19:30:31,489 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2020-04-18 19:30:31,489 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 19:30:31,490 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 19:30:31,490 INFO L427 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 19:30:31,490 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 19:30:31,490 INFO L82 PathProgramCache]: Analyzing trace with hash 1921001132, now seen corresponding path program 1 times [2020-04-18 19:30:31,491 INFO L163 FreeRefinementEngine]: Executing refinement strategy MCR [2020-04-18 19:30:31,491 INFO L354 FreeRefinementEngine]: Using trace check StrategyModuleMcr [1212496957] [2020-04-18 19:30:31,492 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 19:30:31,495 INFO L259 McrAutomatonBuilder]: Finished intersection with 64 states and 87 transitions. [2020-04-18 19:30:31,495 INFO L276 IsEmpty]: Start isEmpty. Operand 64 states. [2020-04-18 19:30:31,496 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2020-04-18 19:30:31,496 INFO L105 Mcr]: ---- MCR iteration 0 ---- [2020-04-18 19:30:31,496 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 19:30:31,497 INFO L82 PathProgramCache]: Analyzing trace with hash 1921001132, now seen corresponding path program 2 times [2020-04-18 19:30:31,497 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 19:30:31,497 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1662623368] [2020-04-18 19:30:31,498 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 19:30:31,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 19:30:31,633 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 19:30:31,634 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1662623368] [2020-04-18 19:30:31,634 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 19:30:31,634 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-04-18 19:30:31,634 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 19:30:31,639 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 19:30:31,723 INFO L259 McrAutomatonBuilder]: Finished intersection with 52 states and 63 transitions. [2020-04-18 19:30:31,723 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 19:30:31,780 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 0 times. [2020-04-18 19:30:31,780 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-04-18 19:30:31,780 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-04-18 19:30:31,781 INFO L87 Difference]: Start difference. First operand 64 states. Second operand 7 states. [2020-04-18 19:30:31,889 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 19:30:31,889 INFO L93 Difference]: Finished difference Result 64 states and 87 transitions. [2020-04-18 19:30:31,889 INFO L276 IsEmpty]: Start isEmpty. Operand 64 states and 87 transitions. [2020-04-18 19:30:31,890 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-18 19:30:31,891 INFO L354 FreeRefinementEngine]: Using interpolant generator StrategyModuleMcr [1212496957] [2020-04-18 19:30:31,891 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-04-18 19:30:31,891 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-04-18 19:30:31,891 INFO L156 tionRefinementEngine]: Using interpolant automaton builder StrategyModuleMcr [1212496957] [2020-04-18 19:30:31,892 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-04-18 19:30:31,892 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy MCR [2020-04-18 19:30:31,892 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-04-18 19:30:31,892 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=71, Unknown=0, NotChecked=0, Total=110 [2020-04-18 19:30:31,893 INFO L87 Difference]: Start difference. First operand 4112 states and 13999 transitions. Second operand 7 states. [2020-04-18 19:30:32,192 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 19:30:32,192 INFO L93 Difference]: Finished difference Result 7117 states and 24018 transitions. [2020-04-18 19:30:32,192 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-04-18 19:30:32,192 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 39 [2020-04-18 19:30:32,193 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 19:30:32,227 INFO L225 Difference]: With dead ends: 7117 [2020-04-18 19:30:32,228 INFO L226 Difference]: Without dead ends: 4457 [2020-04-18 19:30:32,228 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 37 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 61 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=106, Invalid=236, Unknown=0, NotChecked=0, Total=342 [2020-04-18 19:30:32,250 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4457 states. [2020-04-18 19:30:32,368 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4457 to 4457. [2020-04-18 19:30:32,369 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4457 states. [2020-04-18 19:30:32,384 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4457 states to 4457 states and 15046 transitions. [2020-04-18 19:30:32,384 INFO L78 Accepts]: Start accepts. Automaton has 4457 states and 15046 transitions. Word has length 39 [2020-04-18 19:30:32,384 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 19:30:32,385 INFO L479 AbstractCegarLoop]: Abstraction has 4457 states and 15046 transitions. [2020-04-18 19:30:32,385 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-04-18 19:30:32,385 INFO L276 IsEmpty]: Start isEmpty. Operand 4457 states and 15046 transitions. [2020-04-18 19:30:32,394 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2020-04-18 19:30:32,394 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 19:30:32,395 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 19:30:32,395 INFO L427 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 19:30:32,395 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 19:30:32,395 INFO L82 PathProgramCache]: Analyzing trace with hash 1299867611, now seen corresponding path program 1 times [2020-04-18 19:30:32,395 INFO L163 FreeRefinementEngine]: Executing refinement strategy MCR [2020-04-18 19:30:32,396 INFO L354 FreeRefinementEngine]: Using trace check StrategyModuleMcr [1523136635] [2020-04-18 19:30:32,398 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 19:30:32,405 INFO L259 McrAutomatonBuilder]: Finished intersection with 158 states and 321 transitions. [2020-04-18 19:30:32,408 INFO L276 IsEmpty]: Start isEmpty. Operand 158 states. [2020-04-18 19:30:32,409 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2020-04-18 19:30:32,409 INFO L105 Mcr]: ---- MCR iteration 0 ---- [2020-04-18 19:30:32,409 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 19:30:32,409 INFO L82 PathProgramCache]: Analyzing trace with hash -2110468563, now seen corresponding path program 2 times [2020-04-18 19:30:32,409 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 19:30:32,410 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1620810193] [2020-04-18 19:30:32,410 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 19:30:32,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 19:30:32,605 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 19:30:32,605 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1620810193] [2020-04-18 19:30:32,606 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 19:30:32,606 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-04-18 19:30:32,607 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 19:30:32,610 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 19:30:32,622 INFO L259 McrAutomatonBuilder]: Finished intersection with 110 states and 201 transitions. [2020-04-18 19:30:32,622 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 19:30:32,715 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 2 times. [2020-04-18 19:30:32,716 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-04-18 19:30:32,716 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-04-18 19:30:32,716 INFO L87 Difference]: Start difference. First operand 158 states. Second operand 9 states. [2020-04-18 19:30:32,930 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 19:30:32,931 INFO L93 Difference]: Finished difference Result 158 states and 321 transitions. [2020-04-18 19:30:32,931 INFO L276 IsEmpty]: Start isEmpty. Operand 158 states and 321 transitions. [2020-04-18 19:30:32,931 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-18 19:30:32,932 INFO L354 FreeRefinementEngine]: Using interpolant generator StrategyModuleMcr [1523136635] [2020-04-18 19:30:32,932 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-04-18 19:30:32,932 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-04-18 19:30:32,932 INFO L156 tionRefinementEngine]: Using interpolant automaton builder StrategyModuleMcr [1523136635] [2020-04-18 19:30:32,933 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-04-18 19:30:32,933 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy MCR [2020-04-18 19:30:32,933 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-04-18 19:30:32,933 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=62, Invalid=120, Unknown=0, NotChecked=0, Total=182 [2020-04-18 19:30:32,934 INFO L87 Difference]: Start difference. First operand 4457 states and 15046 transitions. Second operand 9 states. [2020-04-18 19:30:33,156 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 19:30:33,156 INFO L93 Difference]: Finished difference Result 6167 states and 20589 transitions. [2020-04-18 19:30:33,156 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-04-18 19:30:33,157 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 41 [2020-04-18 19:30:33,157 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 19:30:33,177 INFO L225 Difference]: With dead ends: 6167 [2020-04-18 19:30:33,177 INFO L226 Difference]: Without dead ends: 2867 [2020-04-18 19:30:33,178 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 40 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 40 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=105, Invalid=237, Unknown=0, NotChecked=0, Total=342 [2020-04-18 19:30:33,190 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2867 states. [2020-04-18 19:30:33,256 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2867 to 2587. [2020-04-18 19:30:33,257 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2587 states. [2020-04-18 19:30:33,266 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2587 states to 2587 states and 8525 transitions. [2020-04-18 19:30:33,266 INFO L78 Accepts]: Start accepts. Automaton has 2587 states and 8525 transitions. Word has length 41 [2020-04-18 19:30:33,267 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 19:30:33,267 INFO L479 AbstractCegarLoop]: Abstraction has 2587 states and 8525 transitions. [2020-04-18 19:30:33,267 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-04-18 19:30:33,267 INFO L276 IsEmpty]: Start isEmpty. Operand 2587 states and 8525 transitions. [2020-04-18 19:30:33,273 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2020-04-18 19:30:33,273 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 19:30:33,274 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 19:30:33,274 INFO L427 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 19:30:33,274 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 19:30:33,274 INFO L82 PathProgramCache]: Analyzing trace with hash 1047968913, now seen corresponding path program 1 times [2020-04-18 19:30:33,274 INFO L163 FreeRefinementEngine]: Executing refinement strategy MCR [2020-04-18 19:30:33,275 INFO L354 FreeRefinementEngine]: Using trace check StrategyModuleMcr [1163853632] [2020-04-18 19:30:33,276 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 19:30:33,280 INFO L259 McrAutomatonBuilder]: Finished intersection with 197 states and 422 transitions. [2020-04-18 19:30:33,281 INFO L276 IsEmpty]: Start isEmpty. Operand 197 states. [2020-04-18 19:30:33,282 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2020-04-18 19:30:33,282 INFO L105 Mcr]: ---- MCR iteration 0 ---- [2020-04-18 19:30:33,282 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 19:30:33,282 INFO L82 PathProgramCache]: Analyzing trace with hash -861876615, now seen corresponding path program 2 times [2020-04-18 19:30:33,283 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 19:30:33,283 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [919854125] [2020-04-18 19:30:33,283 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 19:30:33,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 19:30:33,382 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 19:30:33,383 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [919854125] [2020-04-18 19:30:33,383 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 19:30:33,383 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-04-18 19:30:33,383 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 19:30:33,387 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 19:30:33,400 INFO L259 McrAutomatonBuilder]: Finished intersection with 123 states and 226 transitions. [2020-04-18 19:30:33,401 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 19:30:33,456 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 6 times. [2020-04-18 19:30:33,456 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-04-18 19:30:33,457 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2020-04-18 19:30:33,457 INFO L87 Difference]: Start difference. First operand 197 states. Second operand 8 states. [2020-04-18 19:30:33,816 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 19:30:33,817 INFO L93 Difference]: Finished difference Result 214 states and 438 transitions. [2020-04-18 19:30:33,817 INFO L276 IsEmpty]: Start isEmpty. Operand 214 states and 438 transitions. [2020-04-18 19:30:33,818 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2020-04-18 19:30:33,818 INFO L105 Mcr]: ---- MCR iteration 1 ---- [2020-04-18 19:30:33,818 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 19:30:33,818 INFO L82 PathProgramCache]: Analyzing trace with hash 1047968913, now seen corresponding path program 3 times [2020-04-18 19:30:33,819 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 19:30:33,819 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1882669777] [2020-04-18 19:30:33,819 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 19:30:33,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 19:30:33,905 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 19:30:33,905 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1882669777] [2020-04-18 19:30:33,905 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 19:30:33,906 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-04-18 19:30:33,906 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 19:30:33,910 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 19:30:33,986 INFO L259 McrAutomatonBuilder]: Finished intersection with 102 states and 178 transitions. [2020-04-18 19:30:33,986 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 19:30:34,005 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 1 times. [2020-04-18 19:30:34,005 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-04-18 19:30:34,007 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=126, Invalid=294, Unknown=0, NotChecked=0, Total=420 [2020-04-18 19:30:34,007 INFO L87 Difference]: Start difference. First operand 214 states and 438 transitions. Second operand 7 states. [2020-04-18 19:30:34,095 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 19:30:34,096 INFO L93 Difference]: Finished difference Result 214 states and 438 transitions. [2020-04-18 19:30:34,096 INFO L276 IsEmpty]: Start isEmpty. Operand 214 states and 438 transitions. [2020-04-18 19:30:34,096 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-18 19:30:34,097 INFO L354 FreeRefinementEngine]: Using interpolant generator StrategyModuleMcr [1163853632] [2020-04-18 19:30:34,097 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-04-18 19:30:34,098 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-04-18 19:30:34,098 INFO L156 tionRefinementEngine]: Using interpolant automaton builder StrategyModuleMcr [1163853632] [2020-04-18 19:30:34,098 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-04-18 19:30:34,098 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy MCR [2020-04-18 19:30:34,098 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-04-18 19:30:34,099 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=192, Invalid=408, Unknown=0, NotChecked=0, Total=600 [2020-04-18 19:30:34,100 INFO L87 Difference]: Start difference. First operand 2587 states and 8525 transitions. Second operand 9 states. [2020-04-18 19:30:34,213 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 19:30:34,213 INFO L93 Difference]: Finished difference Result 3627 states and 11849 transitions. [2020-04-18 19:30:34,214 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-04-18 19:30:34,214 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 42 [2020-04-18 19:30:34,214 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 19:30:34,223 INFO L225 Difference]: With dead ends: 3627 [2020-04-18 19:30:34,224 INFO L226 Difference]: Without dead ends: 1597 [2020-04-18 19:30:34,224 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 112 GetRequests, 86 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 153 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=225, Invalid=531, Unknown=0, NotChecked=0, Total=756 [2020-04-18 19:30:34,231 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1597 states. [2020-04-18 19:30:34,262 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1597 to 1597. [2020-04-18 19:30:34,263 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1597 states. [2020-04-18 19:30:34,268 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1597 states to 1597 states and 5027 transitions. [2020-04-18 19:30:34,268 INFO L78 Accepts]: Start accepts. Automaton has 1597 states and 5027 transitions. Word has length 42 [2020-04-18 19:30:34,268 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 19:30:34,269 INFO L479 AbstractCegarLoop]: Abstraction has 1597 states and 5027 transitions. [2020-04-18 19:30:34,269 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-04-18 19:30:34,269 INFO L276 IsEmpty]: Start isEmpty. Operand 1597 states and 5027 transitions. [2020-04-18 19:30:34,273 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2020-04-18 19:30:34,273 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 19:30:34,273 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 19:30:34,274 INFO L427 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 19:30:34,274 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 19:30:34,274 INFO L82 PathProgramCache]: Analyzing trace with hash 553705064, now seen corresponding path program 1 times [2020-04-18 19:30:34,274 INFO L163 FreeRefinementEngine]: Executing refinement strategy MCR [2020-04-18 19:30:34,275 INFO L354 FreeRefinementEngine]: Using trace check StrategyModuleMcr [1289794973] [2020-04-18 19:30:34,276 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 19:30:34,291 INFO L259 McrAutomatonBuilder]: Finished intersection with 701 states and 2081 transitions. [2020-04-18 19:30:34,296 INFO L276 IsEmpty]: Start isEmpty. Operand 701 states. [2020-04-18 19:30:34,299 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2020-04-18 19:30:34,299 INFO L105 Mcr]: ---- MCR iteration 0 ---- [2020-04-18 19:30:34,299 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 19:30:34,300 INFO L82 PathProgramCache]: Analyzing trace with hash -599445656, now seen corresponding path program 2 times [2020-04-18 19:30:34,300 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 19:30:34,300 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1108837444] [2020-04-18 19:30:34,300 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 19:30:34,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 19:30:34,436 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 19:30:34,436 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1108837444] [2020-04-18 19:30:34,437 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 19:30:34,437 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-04-18 19:30:34,437 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 19:30:34,443 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 19:30:34,498 INFO L259 McrAutomatonBuilder]: Finished intersection with 351 states and 895 transitions. [2020-04-18 19:30:34,499 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 19:30:34,574 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 22 times. [2020-04-18 19:30:34,574 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-04-18 19:30:34,574 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-04-18 19:30:34,574 INFO L87 Difference]: Start difference. First operand 701 states. Second operand 9 states. [2020-04-18 19:30:34,825 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 19:30:34,825 INFO L93 Difference]: Finished difference Result 769 states and 2196 transitions. [2020-04-18 19:30:34,825 INFO L276 IsEmpty]: Start isEmpty. Operand 769 states and 2196 transitions. [2020-04-18 19:30:34,827 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2020-04-18 19:30:34,827 INFO L105 Mcr]: ---- MCR iteration 1 ---- [2020-04-18 19:30:34,827 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 19:30:34,827 INFO L82 PathProgramCache]: Analyzing trace with hash -1249281106, now seen corresponding path program 3 times [2020-04-18 19:30:34,828 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 19:30:34,828 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [856742600] [2020-04-18 19:30:34,828 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 19:30:34,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 19:30:34,914 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 19:30:34,914 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [856742600] [2020-04-18 19:30:34,915 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 19:30:34,915 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-04-18 19:30:34,915 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 19:30:34,919 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 19:30:34,973 INFO L259 McrAutomatonBuilder]: Finished intersection with 297 states and 742 transitions. [2020-04-18 19:30:34,973 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 19:30:35,014 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 15 times. [2020-04-18 19:30:35,015 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-04-18 19:30:35,015 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=111, Invalid=309, Unknown=0, NotChecked=0, Total=420 [2020-04-18 19:30:35,015 INFO L87 Difference]: Start difference. First operand 769 states and 2196 transitions. Second operand 7 states. [2020-04-18 19:30:35,265 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 19:30:35,265 INFO L93 Difference]: Finished difference Result 892 states and 2431 transitions. [2020-04-18 19:30:35,265 INFO L276 IsEmpty]: Start isEmpty. Operand 892 states and 2431 transitions. [2020-04-18 19:30:35,267 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2020-04-18 19:30:35,267 INFO L105 Mcr]: ---- MCR iteration 2 ---- [2020-04-18 19:30:35,267 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 19:30:35,268 INFO L82 PathProgramCache]: Analyzing trace with hash 1318351660, now seen corresponding path program 4 times [2020-04-18 19:30:35,268 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 19:30:35,268 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [202252791] [2020-04-18 19:30:35,268 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 19:30:35,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 19:30:35,367 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 19:30:35,368 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [202252791] [2020-04-18 19:30:35,368 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 19:30:35,368 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-04-18 19:30:35,369 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 19:30:35,373 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 19:30:35,403 INFO L259 McrAutomatonBuilder]: Finished intersection with 210 states and 478 transitions. [2020-04-18 19:30:35,403 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 19:30:35,506 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 24 times. [2020-04-18 19:30:35,507 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-04-18 19:30:35,507 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=191, Invalid=801, Unknown=0, NotChecked=0, Total=992 [2020-04-18 19:30:35,507 INFO L87 Difference]: Start difference. First operand 892 states and 2431 transitions. Second operand 6 states. [2020-04-18 19:30:35,574 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 19:30:35,574 INFO L93 Difference]: Finished difference Result 892 states and 2431 transitions. [2020-04-18 19:30:35,575 INFO L276 IsEmpty]: Start isEmpty. Operand 892 states and 2431 transitions. [2020-04-18 19:30:35,578 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-18 19:30:35,579 INFO L354 FreeRefinementEngine]: Using interpolant generator StrategyModuleMcr [1289794973] [2020-04-18 19:30:35,579 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-04-18 19:30:35,579 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-04-18 19:30:35,579 INFO L156 tionRefinementEngine]: Using interpolant automaton builder StrategyModuleMcr [1289794973] [2020-04-18 19:30:35,580 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-04-18 19:30:35,580 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy MCR [2020-04-18 19:30:35,581 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-04-18 19:30:35,581 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=209, Invalid=981, Unknown=0, NotChecked=0, Total=1190 [2020-04-18 19:30:35,582 INFO L87 Difference]: Start difference. First operand 1597 states and 5027 transitions. Second operand 15 states. [2020-04-18 19:30:36,400 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 19:30:36,401 INFO L93 Difference]: Finished difference Result 2067 states and 6448 transitions. [2020-04-18 19:30:36,401 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2020-04-18 19:30:36,401 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 45 [2020-04-18 19:30:36,402 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 19:30:36,407 INFO L225 Difference]: With dead ends: 2067 [2020-04-18 19:30:36,407 INFO L226 Difference]: Without dead ends: 1475 [2020-04-18 19:30:36,409 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 247 GetRequests, 186 SyntacticMatches, 0 SemanticMatches, 61 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1185 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=699, Invalid=3207, Unknown=0, NotChecked=0, Total=3906 [2020-04-18 19:30:36,416 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1475 states. [2020-04-18 19:30:36,452 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1475 to 1475. [2020-04-18 19:30:36,452 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1475 states. [2020-04-18 19:30:36,464 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1475 states to 1475 states and 4614 transitions. [2020-04-18 19:30:36,464 INFO L78 Accepts]: Start accepts. Automaton has 1475 states and 4614 transitions. Word has length 45 [2020-04-18 19:30:36,464 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 19:30:36,465 INFO L479 AbstractCegarLoop]: Abstraction has 1475 states and 4614 transitions. [2020-04-18 19:30:36,465 INFO L480 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-04-18 19:30:36,465 INFO L276 IsEmpty]: Start isEmpty. Operand 1475 states and 4614 transitions. [2020-04-18 19:30:36,468 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2020-04-18 19:30:36,468 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 19:30:36,469 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 19:30:36,469 INFO L427 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 19:30:36,469 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 19:30:36,469 INFO L82 PathProgramCache]: Analyzing trace with hash 796349029, now seen corresponding path program 1 times [2020-04-18 19:30:36,470 INFO L163 FreeRefinementEngine]: Executing refinement strategy MCR [2020-04-18 19:30:36,470 INFO L354 FreeRefinementEngine]: Using trace check StrategyModuleMcr [1539483199] [2020-04-18 19:30:36,471 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 19:30:36,489 INFO L259 McrAutomatonBuilder]: Finished intersection with 857 states and 2602 transitions. [2020-04-18 19:30:36,496 INFO L276 IsEmpty]: Start isEmpty. Operand 857 states. [2020-04-18 19:30:36,499 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2020-04-18 19:30:36,499 INFO L105 Mcr]: ---- MCR iteration 0 ---- [2020-04-18 19:30:36,499 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 19:30:36,500 INFO L82 PathProgramCache]: Analyzing trace with hash -1286469327, now seen corresponding path program 2 times [2020-04-18 19:30:36,500 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 19:30:36,500 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [346233841] [2020-04-18 19:30:36,500 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 19:30:36,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 19:30:36,602 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 19:30:36,603 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [346233841] [2020-04-18 19:30:36,603 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 19:30:36,603 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-04-18 19:30:36,604 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 19:30:36,634 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 19:30:36,685 INFO L259 McrAutomatonBuilder]: Finished intersection with 395 states and 1012 transitions. [2020-04-18 19:30:36,685 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 19:30:36,761 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 26 times. [2020-04-18 19:30:36,761 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-04-18 19:30:36,761 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-04-18 19:30:36,761 INFO L87 Difference]: Start difference. First operand 857 states. Second operand 9 states. [2020-04-18 19:30:37,022 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 19:30:37,022 INFO L93 Difference]: Finished difference Result 993 states and 2900 transitions. [2020-04-18 19:30:37,022 INFO L276 IsEmpty]: Start isEmpty. Operand 993 states and 2900 transitions. [2020-04-18 19:30:37,024 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2020-04-18 19:30:37,025 INFO L105 Mcr]: ---- MCR iteration 1 ---- [2020-04-18 19:30:37,025 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 19:30:37,025 INFO L82 PathProgramCache]: Analyzing trace with hash -1576364665, now seen corresponding path program 3 times [2020-04-18 19:30:37,025 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 19:30:37,026 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [671575925] [2020-04-18 19:30:37,026 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 19:30:37,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 19:30:37,132 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 19:30:37,132 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [671575925] [2020-04-18 19:30:37,133 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 19:30:37,133 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-04-18 19:30:37,133 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 19:30:37,138 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 19:30:37,191 INFO L259 McrAutomatonBuilder]: Finished intersection with 381 states and 1001 transitions. [2020-04-18 19:30:37,191 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 19:30:37,222 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 24 times. [2020-04-18 19:30:37,223 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-04-18 19:30:37,223 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=111, Invalid=309, Unknown=0, NotChecked=0, Total=420 [2020-04-18 19:30:37,223 INFO L87 Difference]: Start difference. First operand 993 states and 2900 transitions. Second operand 8 states. [2020-04-18 19:30:37,431 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 19:30:37,431 INFO L93 Difference]: Finished difference Result 1188 states and 3309 transitions. [2020-04-18 19:30:37,432 INFO L276 IsEmpty]: Start isEmpty. Operand 1188 states and 3309 transitions. [2020-04-18 19:30:37,434 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2020-04-18 19:30:37,435 INFO L105 Mcr]: ---- MCR iteration 2 ---- [2020-04-18 19:30:37,435 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 19:30:37,435 INFO L82 PathProgramCache]: Analyzing trace with hash 1911624521, now seen corresponding path program 4 times [2020-04-18 19:30:37,435 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 19:30:37,436 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1524363349] [2020-04-18 19:30:37,436 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 19:30:37,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 19:30:37,541 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 19:30:37,541 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1524363349] [2020-04-18 19:30:37,541 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 19:30:37,542 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-04-18 19:30:37,542 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 19:30:37,546 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 19:30:37,583 INFO L259 McrAutomatonBuilder]: Finished intersection with 231 states and 527 transitions. [2020-04-18 19:30:37,583 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 19:30:37,763 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 29 times. [2020-04-18 19:30:37,764 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-04-18 19:30:37,764 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=197, Invalid=925, Unknown=0, NotChecked=0, Total=1122 [2020-04-18 19:30:37,764 INFO L87 Difference]: Start difference. First operand 1188 states and 3309 transitions. Second operand 8 states. [2020-04-18 19:30:37,916 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 19:30:37,916 INFO L93 Difference]: Finished difference Result 1188 states and 3309 transitions. [2020-04-18 19:30:37,916 INFO L276 IsEmpty]: Start isEmpty. Operand 1188 states and 3309 transitions. [2020-04-18 19:30:37,920 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-18 19:30:37,921 INFO L354 FreeRefinementEngine]: Using interpolant generator StrategyModuleMcr [1539483199] [2020-04-18 19:30:37,921 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-04-18 19:30:37,921 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-04-18 19:30:37,921 INFO L156 tionRefinementEngine]: Using interpolant automaton builder StrategyModuleMcr [1539483199] [2020-04-18 19:30:37,922 INFO L459 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-04-18 19:30:37,922 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy MCR [2020-04-18 19:30:37,922 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-04-18 19:30:37,923 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=237, Invalid=1245, Unknown=0, NotChecked=0, Total=1482 [2020-04-18 19:30:37,923 INFO L87 Difference]: Start difference. First operand 1475 states and 4614 transitions. Second operand 17 states. [2020-04-18 19:30:38,871 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 19:30:38,871 INFO L93 Difference]: Finished difference Result 1664 states and 5091 transitions. [2020-04-18 19:30:38,879 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2020-04-18 19:30:38,879 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 46 [2020-04-18 19:30:38,880 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 19:30:38,884 INFO L225 Difference]: With dead ends: 1664 [2020-04-18 19:30:38,884 INFO L226 Difference]: Without dead ends: 1160 [2020-04-18 19:30:38,885 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 263 GetRequests, 204 SyntacticMatches, 0 SemanticMatches, 59 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1099 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=561, Invalid=3099, Unknown=0, NotChecked=0, Total=3660 [2020-04-18 19:30:38,890 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1160 states. [2020-04-18 19:30:38,910 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1160 to 1160. [2020-04-18 19:30:38,910 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1160 states. [2020-04-18 19:30:38,913 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1160 states to 1160 states and 3504 transitions. [2020-04-18 19:30:38,914 INFO L78 Accepts]: Start accepts. Automaton has 1160 states and 3504 transitions. Word has length 46 [2020-04-18 19:30:38,914 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 19:30:38,914 INFO L479 AbstractCegarLoop]: Abstraction has 1160 states and 3504 transitions. [2020-04-18 19:30:38,914 INFO L480 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-04-18 19:30:38,914 INFO L276 IsEmpty]: Start isEmpty. Operand 1160 states and 3504 transitions. [2020-04-18 19:30:38,917 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2020-04-18 19:30:38,917 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 19:30:38,917 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 19:30:38,917 INFO L427 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 19:30:38,917 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 19:30:38,918 INFO L82 PathProgramCache]: Analyzing trace with hash -1446515860, now seen corresponding path program 1 times [2020-04-18 19:30:38,918 INFO L163 FreeRefinementEngine]: Executing refinement strategy MCR [2020-04-18 19:30:38,918 INFO L354 FreeRefinementEngine]: Using trace check StrategyModuleMcr [763239438] [2020-04-18 19:30:38,920 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 19:30:38,941 INFO L259 McrAutomatonBuilder]: Finished intersection with 1064 states and 3295 transitions. [2020-04-18 19:30:38,949 INFO L276 IsEmpty]: Start isEmpty. Operand 1064 states. [2020-04-18 19:30:38,952 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2020-04-18 19:30:38,953 INFO L105 Mcr]: ---- MCR iteration 0 ---- [2020-04-18 19:30:38,953 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 19:30:38,953 INFO L82 PathProgramCache]: Analyzing trace with hash 560953550, now seen corresponding path program 2 times [2020-04-18 19:30:38,953 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 19:30:38,954 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1342232854] [2020-04-18 19:30:38,954 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 19:30:38,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 19:30:39,047 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 19:30:39,048 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1342232854] [2020-04-18 19:30:39,048 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 19:30:39,048 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-04-18 19:30:39,048 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 19:30:39,053 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 19:30:39,105 INFO L259 McrAutomatonBuilder]: Finished intersection with 406 states and 1033 transitions. [2020-04-18 19:30:39,106 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 19:30:39,174 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 30 times. [2020-04-18 19:30:39,174 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-04-18 19:30:39,174 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-04-18 19:30:39,174 INFO L87 Difference]: Start difference. First operand 1064 states. Second operand 9 states. [2020-04-18 19:30:39,415 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 19:30:39,415 INFO L93 Difference]: Finished difference Result 1234 states and 3676 transitions. [2020-04-18 19:30:39,415 INFO L276 IsEmpty]: Start isEmpty. Operand 1234 states and 3676 transitions. [2020-04-18 19:30:39,420 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2020-04-18 19:30:39,420 INFO L105 Mcr]: ---- MCR iteration 1 ---- [2020-04-18 19:30:39,420 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 19:30:39,420 INFO L82 PathProgramCache]: Analyzing trace with hash 164132664, now seen corresponding path program 3 times [2020-04-18 19:30:39,421 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 19:30:39,421 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [773087413] [2020-04-18 19:30:39,421 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 19:30:39,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 19:30:39,507 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 19:30:39,508 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [773087413] [2020-04-18 19:30:39,508 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 19:30:39,508 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-04-18 19:30:39,508 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 19:30:39,512 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 19:30:39,571 INFO L259 McrAutomatonBuilder]: Finished intersection with 402 states and 1050 transitions. [2020-04-18 19:30:39,572 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 19:30:39,601 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 23 times. [2020-04-18 19:30:39,602 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-04-18 19:30:39,602 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=111, Invalid=309, Unknown=0, NotChecked=0, Total=420 [2020-04-18 19:30:39,602 INFO L87 Difference]: Start difference. First operand 1234 states and 3676 transitions. Second operand 7 states. [2020-04-18 19:30:39,781 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 19:30:39,781 INFO L93 Difference]: Finished difference Result 1624 states and 4689 transitions. [2020-04-18 19:30:39,781 INFO L276 IsEmpty]: Start isEmpty. Operand 1624 states and 4689 transitions. [2020-04-18 19:30:39,786 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2020-04-18 19:30:39,786 INFO L105 Mcr]: ---- MCR iteration 2 ---- [2020-04-18 19:30:39,787 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 19:30:39,787 INFO L82 PathProgramCache]: Analyzing trace with hash 917615030, now seen corresponding path program 4 times [2020-04-18 19:30:39,787 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 19:30:39,787 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [687490791] [2020-04-18 19:30:39,787 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 19:30:39,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 19:30:39,893 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 19:30:39,894 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [687490791] [2020-04-18 19:30:39,894 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 19:30:39,894 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-04-18 19:30:39,894 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 19:30:39,898 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 19:30:39,969 INFO L259 McrAutomatonBuilder]: Finished intersection with 252 states and 576 transitions. [2020-04-18 19:30:39,970 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 19:30:40,102 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 31 times. [2020-04-18 19:30:40,103 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-04-18 19:30:40,103 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=197, Invalid=925, Unknown=0, NotChecked=0, Total=1122 [2020-04-18 19:30:40,104 INFO L87 Difference]: Start difference. First operand 1624 states and 4689 transitions. Second operand 8 states. [2020-04-18 19:30:40,352 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 19:30:40,352 INFO L93 Difference]: Finished difference Result 1720 states and 4821 transitions. [2020-04-18 19:30:40,352 INFO L276 IsEmpty]: Start isEmpty. Operand 1720 states and 4821 transitions. [2020-04-18 19:30:40,356 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2020-04-18 19:30:40,356 INFO L105 Mcr]: ---- MCR iteration 3 ---- [2020-04-18 19:30:40,356 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 19:30:40,356 INFO L82 PathProgramCache]: Analyzing trace with hash 1095789686, now seen corresponding path program 5 times [2020-04-18 19:30:40,356 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 19:30:40,357 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1954720194] [2020-04-18 19:30:40,357 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 19:30:40,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 19:30:40,441 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 19:30:40,441 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1954720194] [2020-04-18 19:30:40,442 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 19:30:40,442 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-04-18 19:30:40,442 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 19:30:40,446 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 19:30:40,465 INFO L259 McrAutomatonBuilder]: Finished intersection with 132 states and 249 transitions. [2020-04-18 19:30:40,465 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 19:30:40,550 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 13 times. [2020-04-18 19:30:40,551 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-04-18 19:30:40,552 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=275, Invalid=1617, Unknown=0, NotChecked=0, Total=1892 [2020-04-18 19:30:40,552 INFO L87 Difference]: Start difference. First operand 1720 states and 4821 transitions. Second operand 8 states. [2020-04-18 19:30:40,779 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 19:30:40,779 INFO L93 Difference]: Finished difference Result 1720 states and 4821 transitions. [2020-04-18 19:30:40,780 INFO L276 IsEmpty]: Start isEmpty. Operand 1720 states and 4821 transitions. [2020-04-18 19:30:40,782 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-18 19:30:40,784 INFO L354 FreeRefinementEngine]: Using interpolant generator StrategyModuleMcr [763239438] [2020-04-18 19:30:40,784 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-04-18 19:30:40,784 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-04-18 19:30:40,785 INFO L156 tionRefinementEngine]: Using interpolant automaton builder StrategyModuleMcr [763239438] [2020-04-18 19:30:40,785 INFO L459 AbstractCegarLoop]: Interpolant automaton has 20 states [2020-04-18 19:30:40,785 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy MCR [2020-04-18 19:30:40,785 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2020-04-18 19:30:40,786 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=360, Invalid=2090, Unknown=0, NotChecked=0, Total=2450 [2020-04-18 19:30:40,786 INFO L87 Difference]: Start difference. First operand 1160 states and 3504 transitions. Second operand 20 states. [2020-04-18 19:30:41,441 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 19:30:41,441 INFO L93 Difference]: Finished difference Result 998 states and 2901 transitions. [2020-04-18 19:30:41,442 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2020-04-18 19:30:41,442 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 47 [2020-04-18 19:30:41,442 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 19:30:41,446 INFO L225 Difference]: With dead ends: 998 [2020-04-18 19:30:41,446 INFO L226 Difference]: Without dead ends: 674 [2020-04-18 19:30:41,448 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 337 GetRequests, 266 SyntacticMatches, 7 SemanticMatches, 64 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1602 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=641, Invalid=3649, Unknown=0, NotChecked=0, Total=4290 [2020-04-18 19:30:41,451 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 674 states. [2020-04-18 19:30:41,461 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 674 to 674. [2020-04-18 19:30:41,462 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 674 states. [2020-04-18 19:30:41,463 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 674 states to 674 states and 1884 transitions. [2020-04-18 19:30:41,464 INFO L78 Accepts]: Start accepts. Automaton has 674 states and 1884 transitions. Word has length 47 [2020-04-18 19:30:41,464 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 19:30:41,464 INFO L479 AbstractCegarLoop]: Abstraction has 674 states and 1884 transitions. [2020-04-18 19:30:41,464 INFO L480 AbstractCegarLoop]: Interpolant automaton has 20 states. [2020-04-18 19:30:41,464 INFO L276 IsEmpty]: Start isEmpty. Operand 674 states and 1884 transitions. [2020-04-18 19:30:41,466 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2020-04-18 19:30:41,466 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 19:30:41,466 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 19:30:41,466 INFO L427 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 19:30:41,466 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 19:30:41,467 INFO L82 PathProgramCache]: Analyzing trace with hash -1929453779, now seen corresponding path program 1 times [2020-04-18 19:30:41,467 INFO L163 FreeRefinementEngine]: Executing refinement strategy MCR [2020-04-18 19:30:41,467 INFO L354 FreeRefinementEngine]: Using trace check StrategyModuleMcr [1983529250] [2020-04-18 19:30:41,469 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 19:30:41,502 INFO L259 McrAutomatonBuilder]: Finished intersection with 1762 states and 5713 transitions. [2020-04-18 19:30:41,512 INFO L276 IsEmpty]: Start isEmpty. Operand 1762 states. [2020-04-18 19:30:41,517 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2020-04-18 19:30:41,517 INFO L105 Mcr]: ---- MCR iteration 0 ---- [2020-04-18 19:30:41,518 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 19:30:41,518 INFO L82 PathProgramCache]: Analyzing trace with hash 1228147501, now seen corresponding path program 2 times [2020-04-18 19:30:41,518 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 19:30:41,518 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2027659439] [2020-04-18 19:30:41,518 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 19:30:41,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 19:30:41,605 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 19:30:41,605 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2027659439] [2020-04-18 19:30:41,606 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 19:30:41,606 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-04-18 19:30:41,606 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 19:30:41,610 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 19:30:41,655 INFO L259 McrAutomatonBuilder]: Finished intersection with 354 states and 825 transitions. [2020-04-18 19:30:41,655 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 19:30:41,739 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 32 times. [2020-04-18 19:30:41,739 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-04-18 19:30:41,740 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2020-04-18 19:30:41,740 INFO L87 Difference]: Start difference. First operand 1762 states. Second operand 9 states. [2020-04-18 19:30:43,685 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 19:30:43,686 INFO L93 Difference]: Finished difference Result 4027 states and 12527 transitions. [2020-04-18 19:30:43,686 INFO L276 IsEmpty]: Start isEmpty. Operand 4027 states and 12527 transitions. [2020-04-18 19:30:43,693 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2020-04-18 19:30:43,693 INFO L105 Mcr]: ---- MCR iteration 1 ---- [2020-04-18 19:30:43,693 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 19:30:43,693 INFO L82 PathProgramCache]: Analyzing trace with hash -354455825, now seen corresponding path program 3 times [2020-04-18 19:30:43,694 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 19:30:43,694 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [616408555] [2020-04-18 19:30:43,694 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 19:30:43,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 19:30:43,804 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 19:30:43,804 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [616408555] [2020-04-18 19:30:43,805 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 19:30:43,805 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-04-18 19:30:43,805 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 19:30:43,809 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 19:30:43,846 INFO L259 McrAutomatonBuilder]: Finished intersection with 241 states and 503 transitions. [2020-04-18 19:30:43,846 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 19:30:43,902 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 16 times. [2020-04-18 19:30:43,903 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-04-18 19:30:43,904 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=565, Invalid=2087, Unknown=0, NotChecked=0, Total=2652 [2020-04-18 19:30:43,904 INFO L87 Difference]: Start difference. First operand 4027 states and 12527 transitions. Second operand 8 states. [2020-04-18 19:30:44,108 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 19:30:44,108 INFO L93 Difference]: Finished difference Result 4657 states and 14216 transitions. [2020-04-18 19:30:44,108 INFO L276 IsEmpty]: Start isEmpty. Operand 4657 states and 14216 transitions. [2020-04-18 19:30:44,115 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2020-04-18 19:30:44,116 INFO L105 Mcr]: ---- MCR iteration 2 ---- [2020-04-18 19:30:44,116 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 19:30:44,116 INFO L82 PathProgramCache]: Analyzing trace with hash -1731433799, now seen corresponding path program 4 times [2020-04-18 19:30:44,116 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 19:30:44,116 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [483111663] [2020-04-18 19:30:44,116 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 19:30:44,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 19:30:44,232 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 19:30:44,233 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [483111663] [2020-04-18 19:30:44,233 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 19:30:44,233 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-04-18 19:30:44,233 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 19:30:44,237 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 19:30:44,315 INFO L259 McrAutomatonBuilder]: Finished intersection with 414 states and 1081 transitions. [2020-04-18 19:30:44,316 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 19:30:44,386 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 20 times. [2020-04-18 19:30:44,386 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-04-18 19:30:44,388 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=700, Invalid=2960, Unknown=0, NotChecked=0, Total=3660 [2020-04-18 19:30:44,388 INFO L87 Difference]: Start difference. First operand 4657 states and 14216 transitions. Second operand 7 states. [2020-04-18 19:30:44,512 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 19:30:44,512 INFO L93 Difference]: Finished difference Result 6079 states and 18083 transitions. [2020-04-18 19:30:44,512 INFO L276 IsEmpty]: Start isEmpty. Operand 6079 states and 18083 transitions. [2020-04-18 19:30:44,526 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2020-04-18 19:30:44,526 INFO L105 Mcr]: ---- MCR iteration 3 ---- [2020-04-18 19:30:44,526 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 19:30:44,526 INFO L82 PathProgramCache]: Analyzing trace with hash -1124022177, now seen corresponding path program 5 times [2020-04-18 19:30:44,527 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 19:30:44,532 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1826040228] [2020-04-18 19:30:44,532 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 19:30:44,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 19:30:44,624 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 19:30:44,624 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1826040228] [2020-04-18 19:30:44,625 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 19:30:44,625 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-04-18 19:30:44,625 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 19:30:44,629 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 19:30:44,762 INFO L259 McrAutomatonBuilder]: Finished intersection with 438 states and 1146 transitions. [2020-04-18 19:30:44,763 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 19:30:44,795 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 25 times. [2020-04-18 19:30:44,795 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-04-18 19:30:44,797 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=787, Invalid=3503, Unknown=0, NotChecked=0, Total=4290 [2020-04-18 19:30:44,797 INFO L87 Difference]: Start difference. First operand 6079 states and 18083 transitions. Second operand 7 states. [2020-04-18 19:30:45,020 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 19:30:45,021 INFO L93 Difference]: Finished difference Result 6511 states and 19195 transitions. [2020-04-18 19:30:45,021 INFO L276 IsEmpty]: Start isEmpty. Operand 6511 states and 19195 transitions. [2020-04-18 19:30:45,032 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2020-04-18 19:30:45,032 INFO L105 Mcr]: ---- MCR iteration 4 ---- [2020-04-18 19:30:45,032 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 19:30:45,032 INFO L82 PathProgramCache]: Analyzing trace with hash 1418025821, now seen corresponding path program 6 times [2020-04-18 19:30:45,033 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 19:30:45,033 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1974676554] [2020-04-18 19:30:45,033 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 19:30:45,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 19:30:45,131 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 19:30:45,131 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1974676554] [2020-04-18 19:30:45,131 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 19:30:45,132 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-04-18 19:30:45,132 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 19:30:45,135 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 19:30:45,168 INFO L259 McrAutomatonBuilder]: Finished intersection with 276 states and 632 transitions. [2020-04-18 19:30:45,168 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 19:30:45,511 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 31 times. [2020-04-18 19:30:45,511 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-04-18 19:30:45,514 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1009, Invalid=5153, Unknown=0, NotChecked=0, Total=6162 [2020-04-18 19:30:45,514 INFO L87 Difference]: Start difference. First operand 6511 states and 19195 transitions. Second operand 8 states. [2020-04-18 19:30:45,826 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 19:30:45,826 INFO L93 Difference]: Finished difference Result 7440 states and 20807 transitions. [2020-04-18 19:30:45,827 INFO L276 IsEmpty]: Start isEmpty. Operand 7440 states and 20807 transitions. [2020-04-18 19:30:45,842 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2020-04-18 19:30:45,842 INFO L105 Mcr]: ---- MCR iteration 5 ---- [2020-04-18 19:30:45,842 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 19:30:45,843 INFO L82 PathProgramCache]: Analyzing trace with hash 845178397, now seen corresponding path program 7 times [2020-04-18 19:30:45,843 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 19:30:45,843 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1306027576] [2020-04-18 19:30:45,843 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 19:30:45,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 19:30:45,982 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 19:30:45,983 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1306027576] [2020-04-18 19:30:45,983 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 19:30:45,983 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-04-18 19:30:45,984 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 19:30:45,990 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 19:30:46,021 INFO L259 McrAutomatonBuilder]: Finished intersection with 144 states and 271 transitions. [2020-04-18 19:30:46,022 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 19:30:46,142 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 13 times. [2020-04-18 19:30:46,142 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-04-18 19:30:46,147 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1078, Invalid=6578, Unknown=0, NotChecked=0, Total=7656 [2020-04-18 19:30:46,147 INFO L87 Difference]: Start difference. First operand 7440 states and 20807 transitions. Second operand 8 states. [2020-04-18 19:30:46,547 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 19:30:46,547 INFO L93 Difference]: Finished difference Result 7632 states and 20983 transitions. [2020-04-18 19:30:46,548 INFO L276 IsEmpty]: Start isEmpty. Operand 7632 states and 20983 transitions. [2020-04-18 19:30:46,562 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-18 19:30:46,563 INFO L354 FreeRefinementEngine]: Using interpolant generator StrategyModuleMcr [1983529250] [2020-04-18 19:30:46,563 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-04-18 19:30:46,564 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-04-18 19:30:46,564 INFO L156 tionRefinementEngine]: Using interpolant automaton builder StrategyModuleMcr [1983529250] [2020-04-18 19:30:46,564 INFO L459 AbstractCegarLoop]: Interpolant automaton has 22 states [2020-04-18 19:30:46,564 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy MCR [2020-04-18 19:30:46,564 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2020-04-18 19:30:46,567 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1166, Invalid=7764, Unknown=0, NotChecked=0, Total=8930 [2020-04-18 19:30:46,568 INFO L87 Difference]: Start difference. First operand 674 states and 1884 transitions. Second operand 22 states. [2020-04-18 19:30:47,467 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 19:30:47,467 INFO L93 Difference]: Finished difference Result 620 states and 1722 transitions. [2020-04-18 19:30:47,468 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2020-04-18 19:30:47,468 INFO L78 Accepts]: Start accepts. Automaton has 22 states. Word has length 49 [2020-04-18 19:30:47,468 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 19:30:47,469 INFO L225 Difference]: With dead ends: 620 [2020-04-18 19:30:47,469 INFO L226 Difference]: Without dead ends: 0 [2020-04-18 19:30:47,471 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 548 GetRequests, 435 SyntacticMatches, 0 SemanticMatches, 113 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5236 ImplicationChecksByTransitivity, 3.2s TimeCoverageRelationStatistics Valid=1593, Invalid=11517, Unknown=0, NotChecked=0, Total=13110 [2020-04-18 19:30:47,472 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-04-18 19:30:47,472 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-04-18 19:30:47,472 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-04-18 19:30:47,472 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-04-18 19:30:47,472 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 49 [2020-04-18 19:30:47,473 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 19:30:47,473 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-04-18 19:30:47,473 INFO L480 AbstractCegarLoop]: Interpolant automaton has 22 states. [2020-04-18 19:30:47,473 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-04-18 19:30:47,473 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-18 19:30:47,478 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 18.04 07:30:47 BasicIcfg [2020-04-18 19:30:47,479 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-04-18 19:30:47,481 INFO L168 Benchmark]: Toolchain (without parser) took 20704.74 ms. Allocated memory was 143.1 MB in the beginning and 756.0 MB in the end (delta: 612.9 MB). Free memory was 99.3 MB in the beginning and 156.4 MB in the end (delta: -57.1 MB). Peak memory consumption was 555.8 MB. Max. memory is 7.1 GB. [2020-04-18 19:30:47,482 INFO L168 Benchmark]: CDTParser took 0.16 ms. Allocated memory is still 143.1 MB. Free memory was 119.4 MB in the beginning and 119.2 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2020-04-18 19:30:47,482 INFO L168 Benchmark]: CACSL2BoogieTranslator took 767.54 ms. Allocated memory was 143.1 MB in the beginning and 200.8 MB in the end (delta: 57.7 MB). Free memory was 97.3 MB in the beginning and 154.9 MB in the end (delta: -57.6 MB). Peak memory consumption was 20.0 MB. Max. memory is 7.1 GB. [2020-04-18 19:30:47,483 INFO L168 Benchmark]: Boogie Procedure Inliner took 53.39 ms. Allocated memory is still 200.8 MB. Free memory was 154.9 MB in the beginning and 152.8 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 7.1 GB. [2020-04-18 19:30:47,483 INFO L168 Benchmark]: Boogie Preprocessor took 29.22 ms. Allocated memory is still 200.8 MB. Free memory was 152.8 MB in the beginning and 151.4 MB in the end (delta: 1.4 MB). Peak memory consumption was 1.4 MB. Max. memory is 7.1 GB. [2020-04-18 19:30:47,484 INFO L168 Benchmark]: RCFGBuilder took 485.32 ms. Allocated memory is still 200.8 MB. Free memory was 151.4 MB in the beginning and 128.9 MB in the end (delta: 22.5 MB). Peak memory consumption was 22.5 MB. Max. memory is 7.1 GB. [2020-04-18 19:30:47,484 INFO L168 Benchmark]: TraceAbstraction took 19330.33 ms. Allocated memory was 200.8 MB in the beginning and 756.0 MB in the end (delta: 555.2 MB). Free memory was 128.9 MB in the beginning and 156.4 MB in the end (delta: -27.5 MB). Peak memory consumption was 527.7 MB. Max. memory is 7.1 GB. [2020-04-18 19:30:47,487 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.16 ms. Allocated memory is still 143.1 MB. Free memory was 119.4 MB in the beginning and 119.2 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 767.54 ms. Allocated memory was 143.1 MB in the beginning and 200.8 MB in the end (delta: 57.7 MB). Free memory was 97.3 MB in the beginning and 154.9 MB in the end (delta: -57.6 MB). Peak memory consumption was 20.0 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 53.39 ms. Allocated memory is still 200.8 MB. Free memory was 154.9 MB in the beginning and 152.8 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 29.22 ms. Allocated memory is still 200.8 MB. Free memory was 152.8 MB in the beginning and 151.4 MB in the end (delta: 1.4 MB). Peak memory consumption was 1.4 MB. Max. memory is 7.1 GB. * RCFGBuilder took 485.32 ms. Allocated memory is still 200.8 MB. Free memory was 151.4 MB in the beginning and 128.9 MB in the end (delta: 22.5 MB). Peak memory consumption was 22.5 MB. Max. memory is 7.1 GB. * TraceAbstraction took 19330.33 ms. Allocated memory was 200.8 MB in the beginning and 756.0 MB in the end (delta: 555.2 MB). Free memory was 128.9 MB in the beginning and 156.4 MB in the end (delta: -27.5 MB). Peak memory consumption was 527.7 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 7]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 70 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 19.1s, OverallIterations: 9, TraceHistogramMax: 1, AutomataDifference: 4.7s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.6s, HoareTripleCheckerStatistics: 800 SDtfs, 2478 SDslu, 4632 SDs, 0 SdLazy, 956 SolverSat, 215 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 1.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 1708 GetRequests, 1325 SyntacticMatches, 7 SemanticMatches, 376 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9393 ImplicationChecksByTransitivity, 8.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=8473occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.8s AutomataMinimizationTime, 9 MinimizatonAttempts, 280 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: No data available, 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...