/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-VariableLbe-McrStrategy.epf -i ../../../trunk/examples/svcomp/pthread-wmm/safe010_tso.opt.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-b981219 [2020-04-18 15:06:41,618 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-04-18 15:06:41,621 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-04-18 15:06:41,637 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-04-18 15:06:41,637 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-04-18 15:06:41,638 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-04-18 15:06:41,639 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-04-18 15:06:41,641 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-04-18 15:06:41,643 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-04-18 15:06:41,644 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-04-18 15:06:41,645 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-04-18 15:06:41,646 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-04-18 15:06:41,646 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-04-18 15:06:41,647 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-04-18 15:06:41,648 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-04-18 15:06:41,649 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-04-18 15:06:41,650 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-04-18 15:06:41,650 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-04-18 15:06:41,652 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-04-18 15:06:41,654 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-04-18 15:06:41,656 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-04-18 15:06:41,657 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-04-18 15:06:41,658 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-04-18 15:06:41,659 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-04-18 15:06:41,661 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-04-18 15:06:41,662 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-04-18 15:06:41,662 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-04-18 15:06:41,663 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-04-18 15:06:41,663 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-04-18 15:06:41,664 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-04-18 15:06:41,664 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-04-18 15:06:41,665 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-04-18 15:06:41,666 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-04-18 15:06:41,667 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-04-18 15:06:41,668 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-04-18 15:06:41,668 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-04-18 15:06:41,669 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-04-18 15:06:41,669 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-04-18 15:06:41,669 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-04-18 15:06:41,670 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-04-18 15:06:41,671 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-04-18 15:06:41,673 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-VariableLbe-McrStrategy.epf [2020-04-18 15:06:41,697 INFO L113 SettingsManager]: Loading preferences was successful [2020-04-18 15:06:41,697 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-04-18 15:06:41,698 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-04-18 15:06:41,698 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-04-18 15:06:41,699 INFO L138 SettingsManager]: * Use SBE=true [2020-04-18 15:06:41,699 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-04-18 15:06:41,699 INFO L138 SettingsManager]: * sizeof long=4 [2020-04-18 15:06:41,699 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-04-18 15:06:41,700 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-04-18 15:06:41,700 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-04-18 15:06:41,700 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-04-18 15:06:41,700 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-04-18 15:06:41,700 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-04-18 15:06:41,700 INFO L138 SettingsManager]: * sizeof long double=12 [2020-04-18 15:06:41,701 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-04-18 15:06:41,701 INFO L138 SettingsManager]: * Use constant arrays=true [2020-04-18 15:06:41,701 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-04-18 15:06:41,701 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-04-18 15:06:41,701 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-04-18 15:06:41,702 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-04-18 15:06:41,702 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-04-18 15:06:41,702 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-04-18 15:06:41,702 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-04-18 15:06:41,702 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-04-18 15:06:41,703 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-04-18 15:06:41,703 INFO L138 SettingsManager]: * Trace refinement strategy=MCR [2020-04-18 15:06:41,703 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-04-18 15:06:41,703 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=VARIABLE_BASED_MOVER_CHECK [2020-04-18 15:06:41,703 INFO L138 SettingsManager]: * Trace refinement strategy used in MCR=CAMEL [2020-04-18 15:06:41,703 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-04-18 15:06:41,704 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-04-18 15:06:41,965 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2020-04-18 15:06:41,980 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-04-18 15:06:41,984 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-04-18 15:06:41,985 INFO L271 PluginConnector]: Initializing CDTParser... [2020-04-18 15:06:41,986 INFO L275 PluginConnector]: CDTParser initialized [2020-04-18 15:06:41,988 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe010_tso.opt.i [2020-04-18 15:06:42,061 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f0617d9d8/9db9740f0ef74c12a141063396d86ff7/FLAGcb2de5940 [2020-04-18 15:06:42,620 INFO L306 CDTParser]: Found 1 translation units. [2020-04-18 15:06:42,621 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe010_tso.opt.i [2020-04-18 15:06:42,635 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f0617d9d8/9db9740f0ef74c12a141063396d86ff7/FLAGcb2de5940 [2020-04-18 15:06:42,954 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f0617d9d8/9db9740f0ef74c12a141063396d86ff7 [2020-04-18 15:06:42,963 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-04-18 15:06:42,980 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2020-04-18 15:06:42,981 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-04-18 15:06:42,981 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-04-18 15:06:42,984 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-04-18 15:06:42,985 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.04 03:06:42" (1/1) ... [2020-04-18 15:06:42,990 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@905f59d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 03:06:42, skipping insertion in model container [2020-04-18 15:06:42,990 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.04 03:06:42" (1/1) ... [2020-04-18 15:06:42,997 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-04-18 15:06:43,041 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-04-18 15:06:43,482 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-04-18 15:06:43,494 INFO L203 MainTranslator]: Completed pre-run [2020-04-18 15:06:43,537 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-04-18 15:06:43,633 INFO L208 MainTranslator]: Completed translation [2020-04-18 15:06:43,634 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 03:06:43 WrapperNode [2020-04-18 15:06:43,634 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-04-18 15:06:43,634 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-04-18 15:06:43,635 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-04-18 15:06:43,635 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-04-18 15:06:43,642 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 03:06:43" (1/1) ... [2020-04-18 15:06:43,657 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 03:06:43" (1/1) ... [2020-04-18 15:06:43,677 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-04-18 15:06:43,678 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-04-18 15:06:43,678 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-04-18 15:06:43,678 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-04-18 15:06:43,684 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 03:06:43" (1/1) ... [2020-04-18 15:06:43,685 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 03:06:43" (1/1) ... [2020-04-18 15:06:43,688 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 03:06:43" (1/1) ... [2020-04-18 15:06:43,688 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 03:06:43" (1/1) ... [2020-04-18 15:06:43,694 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 03:06:43" (1/1) ... [2020-04-18 15:06:43,696 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 03:06:43" (1/1) ... [2020-04-18 15:06:43,698 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 03:06:43" (1/1) ... [2020-04-18 15:06:43,701 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-04-18 15:06:43,701 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-04-18 15:06:43,702 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-04-18 15:06:43,702 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-04-18 15:06:43,703 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 03:06:43" (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 15:06:43,779 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-04-18 15:06:43,779 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2020-04-18 15:06:43,779 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-04-18 15:06:43,780 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-04-18 15:06:43,780 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2020-04-18 15:06:43,780 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2020-04-18 15:06:43,781 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2020-04-18 15:06:43,781 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2020-04-18 15:06:43,782 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2020-04-18 15:06:43,782 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-04-18 15:06:43,782 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-04-18 15:06:43,784 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 15:06:44,116 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-04-18 15:06:44,116 INFO L295 CfgBuilder]: Removed 8 assume(true) statements. [2020-04-18 15:06:44,120 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.04 03:06:44 BoogieIcfgContainer [2020-04-18 15:06:44,121 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-04-18 15:06:44,122 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-04-18 15:06:44,122 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-04-18 15:06:44,125 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-04-18 15:06:44,126 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.04 03:06:42" (1/3) ... [2020-04-18 15:06:44,127 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6b94e9f3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.04 03:06:44, skipping insertion in model container [2020-04-18 15:06:44,127 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 03:06:43" (2/3) ... [2020-04-18 15:06:44,127 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6b94e9f3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.04 03:06:44, skipping insertion in model container [2020-04-18 15:06:44,128 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.04 03:06:44" (3/3) ... [2020-04-18 15:06:44,129 INFO L109 eAbstractionObserver]: Analyzing ICFG safe010_tso.opt.i [2020-04-18 15:06:44,137 WARN L146 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2020-04-18 15:06:44,137 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-04-18 15:06:44,147 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-04-18 15:06:44,148 INFO L340 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2020-04-18 15:06:44,174 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 15:06:44,175 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 15:06:44,175 WARN L315 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 15:06:44,176 WARN L315 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 15:06:44,176 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 15:06:44,177 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 15:06:44,177 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 15:06:44,177 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 15:06:44,178 WARN L315 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 15:06:44,178 WARN L315 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 15:06:44,178 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 15:06:44,179 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 15:06:44,183 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 15:06:44,183 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 15:06:44,183 WARN L315 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 15:06:44,184 WARN L315 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 15:06:44,197 WARN L315 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 15:06:44,197 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 15:06:44,198 WARN L315 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 15:06:44,198 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 15:06:44,211 INFO L251 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2020-04-18 15:06:44,230 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-04-18 15:06:44,231 INFO L376 AbstractCegarLoop]: Hoare is true [2020-04-18 15:06:44,231 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-04-18 15:06:44,231 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-04-18 15:06:44,232 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-04-18 15:06:44,232 INFO L380 AbstractCegarLoop]: Difference is false [2020-04-18 15:06:44,232 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-04-18 15:06:44,232 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-04-18 15:06:44,247 INFO L152 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 60 places, 55 transitions, 120 flow [2020-04-18 15:06:44,249 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 60 places, 55 transitions, 120 flow [2020-04-18 15:06:44,285 INFO L129 PetriNetUnfolder]: 2/53 cut-off events. [2020-04-18 15:06:44,285 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-04-18 15:06:44,289 INFO L80 FinitePrefix]: Finished finitePrefix Result has 60 conditions, 53 events. 2/53 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 37 event pairs, 0 based on Foata normal form. 0/50 useless extension candidates. Maximal degree in co-relation 41. Up to 2 conditions per place. [2020-04-18 15:06:44,292 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 60 places, 55 transitions, 120 flow [2020-04-18 15:06:44,310 INFO L129 PetriNetUnfolder]: 2/53 cut-off events. [2020-04-18 15:06:44,311 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-04-18 15:06:44,312 INFO L80 FinitePrefix]: Finished finitePrefix Result has 60 conditions, 53 events. 2/53 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 37 event pairs, 0 based on Foata normal form. 0/50 useless extension candidates. Maximal degree in co-relation 41. Up to 2 conditions per place. [2020-04-18 15:06:44,314 INFO L158 etLargeBlockEncoding]: Number of co-enabled transitions 672 [2020-04-18 15:06:44,315 INFO L182 etLargeBlockEncoding]: Variable Check. [2020-04-18 15:06:45,633 INFO L206 etLargeBlockEncoding]: Checked pairs total: 1251 [2020-04-18 15:06:45,634 INFO L214 etLargeBlockEncoding]: Total number of compositions: 49 [2020-04-18 15:06:45,638 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 22 places, 15 transitions, 40 flow [2020-04-18 15:06:45,651 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 74 states. [2020-04-18 15:06:45,653 INFO L276 IsEmpty]: Start isEmpty. Operand 74 states. [2020-04-18 15:06:45,660 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2020-04-18 15:06:45,660 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 15:06:45,661 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2020-04-18 15:06:45,662 INFO L427 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 15:06:45,668 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 15:06:45,668 INFO L82 PathProgramCache]: Analyzing trace with hash 1814584925, now seen corresponding path program 1 times [2020-04-18 15:06:45,676 INFO L163 FreeRefinementEngine]: Executing refinement strategy MCR [2020-04-18 15:06:45,676 INFO L354 FreeRefinementEngine]: Using trace check StrategyModuleMcr [1768299170] [2020-04-18 15:06:45,694 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 15:06:45,707 INFO L259 McrAutomatonBuilder]: Finished intersection with 7 states and 6 transitions. [2020-04-18 15:06:45,709 INFO L276 IsEmpty]: Start isEmpty. Operand 7 states. [2020-04-18 15:06:45,710 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2020-04-18 15:06:45,710 INFO L105 Mcr]: ---- MCR iteration 0 ---- [2020-04-18 15:06:45,711 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 15:06:45,712 INFO L82 PathProgramCache]: Analyzing trace with hash 1814584925, now seen corresponding path program 2 times [2020-04-18 15:06:45,716 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 15:06:45,717 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1786905463] [2020-04-18 15:06:45,718 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 15:06:45,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 15:06:45,931 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 15:06:45,932 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1786905463] [2020-04-18 15:06:45,933 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 15:06:45,934 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-04-18 15:06:45,935 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 15:06:45,936 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 15:06:45,937 INFO L259 McrAutomatonBuilder]: Finished intersection with 7 states and 6 transitions. [2020-04-18 15:06:45,938 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 15:06:45,945 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 0 times. [2020-04-18 15:06:45,949 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-04-18 15:06:45,950 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-04-18 15:06:45,952 INFO L87 Difference]: Start difference. First operand 7 states. Second operand 3 states. [2020-04-18 15:06:45,956 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 15:06:45,956 INFO L93 Difference]: Finished difference Result 7 states and 6 transitions. [2020-04-18 15:06:45,956 INFO L276 IsEmpty]: Start isEmpty. Operand 7 states and 6 transitions. [2020-04-18 15:06:45,957 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-18 15:06:45,957 INFO L354 FreeRefinementEngine]: Using interpolant generator StrategyModuleMcr [1768299170] [2020-04-18 15:06:45,958 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-04-18 15:06:45,958 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [1] total 1 [2020-04-18 15:06:45,958 INFO L156 tionRefinementEngine]: Using interpolant automaton builder StrategyModuleMcr [1768299170] [2020-04-18 15:06:45,960 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-04-18 15:06:45,960 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy MCR [2020-04-18 15:06:45,964 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-04-18 15:06:45,964 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-04-18 15:06:45,965 INFO L87 Difference]: Start difference. First operand 74 states. Second operand 3 states. [2020-04-18 15:06:45,984 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 15:06:45,984 INFO L93 Difference]: Finished difference Result 70 states and 149 transitions. [2020-04-18 15:06:45,986 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-04-18 15:06:45,988 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 6 [2020-04-18 15:06:45,990 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 15:06:46,016 INFO L225 Difference]: With dead ends: 70 [2020-04-18 15:06:46,017 INFO L226 Difference]: Without dead ends: 54 [2020-04-18 15:06:46,021 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-04-18 15:06:46,043 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54 states. [2020-04-18 15:06:46,080 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54 to 54. [2020-04-18 15:06:46,081 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 54 states. [2020-04-18 15:06:46,083 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 109 transitions. [2020-04-18 15:06:46,084 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 109 transitions. Word has length 6 [2020-04-18 15:06:46,085 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 15:06:46,085 INFO L479 AbstractCegarLoop]: Abstraction has 54 states and 109 transitions. [2020-04-18 15:06:46,085 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-04-18 15:06:46,085 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 109 transitions. [2020-04-18 15:06:46,086 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2020-04-18 15:06:46,086 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 15:06:46,086 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2020-04-18 15:06:46,086 INFO L427 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 15:06:46,087 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 15:06:46,087 INFO L82 PathProgramCache]: Analyzing trace with hash 417538412, now seen corresponding path program 1 times [2020-04-18 15:06:46,087 INFO L163 FreeRefinementEngine]: Executing refinement strategy MCR [2020-04-18 15:06:46,088 INFO L354 FreeRefinementEngine]: Using trace check StrategyModuleMcr [1595336119] [2020-04-18 15:06:46,088 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 15:06:46,089 INFO L259 McrAutomatonBuilder]: Finished intersection with 10 states and 11 transitions. [2020-04-18 15:06:46,089 INFO L276 IsEmpty]: Start isEmpty. Operand 10 states. [2020-04-18 15:06:46,090 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2020-04-18 15:06:46,090 INFO L105 Mcr]: ---- MCR iteration 0 ---- [2020-04-18 15:06:46,090 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 15:06:46,090 INFO L82 PathProgramCache]: Analyzing trace with hash 417538412, now seen corresponding path program 2 times [2020-04-18 15:06:46,091 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 15:06:46,091 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1484615886] [2020-04-18 15:06:46,091 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 15:06:46,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 15:06:46,159 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 15:06:46,160 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1484615886] [2020-04-18 15:06:46,160 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 15:06:46,160 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-04-18 15:06:46,160 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 15:06:46,161 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 15:06:46,163 INFO L259 McrAutomatonBuilder]: Finished intersection with 9 states and 9 transitions. [2020-04-18 15:06:46,163 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 15:06:46,169 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 0 times. [2020-04-18 15:06:46,169 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-04-18 15:06:46,169 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-04-18 15:06:46,170 INFO L87 Difference]: Start difference. First operand 10 states. Second operand 3 states. [2020-04-18 15:06:46,171 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 15:06:46,171 INFO L93 Difference]: Finished difference Result 10 states and 11 transitions. [2020-04-18 15:06:46,171 INFO L276 IsEmpty]: Start isEmpty. Operand 10 states and 11 transitions. [2020-04-18 15:06:46,171 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-18 15:06:46,172 INFO L354 FreeRefinementEngine]: Using interpolant generator StrategyModuleMcr [1595336119] [2020-04-18 15:06:46,172 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-04-18 15:06:46,172 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [1] total 1 [2020-04-18 15:06:46,172 INFO L156 tionRefinementEngine]: Using interpolant automaton builder StrategyModuleMcr [1595336119] [2020-04-18 15:06:46,173 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-04-18 15:06:46,173 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy MCR [2020-04-18 15:06:46,174 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-04-18 15:06:46,174 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-04-18 15:06:46,174 INFO L87 Difference]: Start difference. First operand 54 states and 109 transitions. Second operand 3 states. [2020-04-18 15:06:46,181 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 15:06:46,181 INFO L93 Difference]: Finished difference Result 53 states and 106 transitions. [2020-04-18 15:06:46,182 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-04-18 15:06:46,182 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 7 [2020-04-18 15:06:46,182 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 15:06:46,183 INFO L225 Difference]: With dead ends: 53 [2020-04-18 15:06:46,183 INFO L226 Difference]: Without dead ends: 53 [2020-04-18 15:06:46,185 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-04-18 15:06:46,186 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53 states. [2020-04-18 15:06:46,191 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53 to 53. [2020-04-18 15:06:46,191 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 53 states. [2020-04-18 15:06:46,192 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53 states to 53 states and 106 transitions. [2020-04-18 15:06:46,193 INFO L78 Accepts]: Start accepts. Automaton has 53 states and 106 transitions. Word has length 7 [2020-04-18 15:06:46,193 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 15:06:46,193 INFO L479 AbstractCegarLoop]: Abstraction has 53 states and 106 transitions. [2020-04-18 15:06:46,193 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-04-18 15:06:46,193 INFO L276 IsEmpty]: Start isEmpty. Operand 53 states and 106 transitions. [2020-04-18 15:06:46,194 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-04-18 15:06:46,194 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 15:06:46,194 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 15:06:46,194 INFO L427 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 15:06:46,195 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 15:06:46,195 INFO L82 PathProgramCache]: Analyzing trace with hash 58787852, now seen corresponding path program 1 times [2020-04-18 15:06:46,195 INFO L163 FreeRefinementEngine]: Executing refinement strategy MCR [2020-04-18 15:06:46,195 INFO L354 FreeRefinementEngine]: Using trace check StrategyModuleMcr [1151979777] [2020-04-18 15:06:46,196 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 15:06:46,197 INFO L259 McrAutomatonBuilder]: Finished intersection with 18 states and 28 transitions. [2020-04-18 15:06:46,197 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states. [2020-04-18 15:06:46,198 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-04-18 15:06:46,198 INFO L105 Mcr]: ---- MCR iteration 0 ---- [2020-04-18 15:06:46,198 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 15:06:46,198 INFO L82 PathProgramCache]: Analyzing trace with hash 58789022, now seen corresponding path program 2 times [2020-04-18 15:06:46,198 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 15:06:46,199 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1235311348] [2020-04-18 15:06:46,199 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 15:06:46,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 15:06:46,250 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 15:06:46,251 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1235311348] [2020-04-18 15:06:46,251 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 15:06:46,251 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-04-18 15:06:46,251 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 15:06:46,252 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 15:06:46,253 INFO L259 McrAutomatonBuilder]: Finished intersection with 10 states and 10 transitions. [2020-04-18 15:06:46,254 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 15:06:46,257 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 0 times. [2020-04-18 15:06:46,257 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-04-18 15:06:46,258 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-04-18 15:06:46,258 INFO L87 Difference]: Start difference. First operand 18 states. Second operand 3 states. [2020-04-18 15:06:46,261 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 15:06:46,261 INFO L93 Difference]: Finished difference Result 20 states and 29 transitions. [2020-04-18 15:06:46,262 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 29 transitions. [2020-04-18 15:06:46,262 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-04-18 15:06:46,262 INFO L105 Mcr]: ---- MCR iteration 1 ---- [2020-04-18 15:06:46,263 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 15:06:46,263 INFO L82 PathProgramCache]: Analyzing trace with hash 58787852, now seen corresponding path program 3 times [2020-04-18 15:06:46,263 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 15:06:46,263 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1952913325] [2020-04-18 15:06:46,264 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 15:06:46,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 15:06:46,313 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 15:06:46,313 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1952913325] [2020-04-18 15:06:46,314 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 15:06:46,314 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-04-18 15:06:46,314 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 15:06:46,315 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 15:06:46,316 INFO L259 McrAutomatonBuilder]: Finished intersection with 15 states and 21 transitions. [2020-04-18 15:06:46,316 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 15:06:46,331 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 0 times. [2020-04-18 15:06:46,331 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-04-18 15:06:46,332 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-04-18 15:06:46,332 INFO L87 Difference]: Start difference. First operand 20 states and 29 transitions. Second operand 4 states. [2020-04-18 15:06:46,344 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 15:06:46,344 INFO L93 Difference]: Finished difference Result 20 states and 29 transitions. [2020-04-18 15:06:46,344 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 29 transitions. [2020-04-18 15:06:46,345 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-18 15:06:46,345 INFO L354 FreeRefinementEngine]: Using interpolant generator StrategyModuleMcr [1151979777] [2020-04-18 15:06:46,345 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-04-18 15:06:46,345 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2] total 2 [2020-04-18 15:06:46,346 INFO L156 tionRefinementEngine]: Using interpolant automaton builder StrategyModuleMcr [1151979777] [2020-04-18 15:06:46,346 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-04-18 15:06:46,346 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy MCR [2020-04-18 15:06:46,346 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-04-18 15:06:46,347 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-04-18 15:06:46,347 INFO L87 Difference]: Start difference. First operand 53 states and 106 transitions. Second operand 5 states. [2020-04-18 15:06:46,387 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 15:06:46,387 INFO L93 Difference]: Finished difference Result 60 states and 113 transitions. [2020-04-18 15:06:46,387 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-04-18 15:06:46,388 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 8 [2020-04-18 15:06:46,388 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 15:06:46,388 INFO L225 Difference]: With dead ends: 60 [2020-04-18 15:06:46,389 INFO L226 Difference]: Without dead ends: 36 [2020-04-18 15:06:46,389 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-04-18 15:06:46,390 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2020-04-18 15:06:46,393 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 36. [2020-04-18 15:06:46,394 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2020-04-18 15:06:46,394 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 63 transitions. [2020-04-18 15:06:46,394 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 63 transitions. Word has length 8 [2020-04-18 15:06:46,395 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 15:06:46,395 INFO L479 AbstractCegarLoop]: Abstraction has 36 states and 63 transitions. [2020-04-18 15:06:46,395 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-04-18 15:06:46,395 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 63 transitions. [2020-04-18 15:06:46,396 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-04-18 15:06:46,396 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 15:06:46,396 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 15:06:46,396 INFO L427 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 15:06:46,396 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 15:06:46,397 INFO L82 PathProgramCache]: Analyzing trace with hash 1840071362, now seen corresponding path program 1 times [2020-04-18 15:06:46,397 INFO L163 FreeRefinementEngine]: Executing refinement strategy MCR [2020-04-18 15:06:46,397 INFO L354 FreeRefinementEngine]: Using trace check StrategyModuleMcr [446946885] [2020-04-18 15:06:46,397 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 15:06:46,398 INFO L259 McrAutomatonBuilder]: Finished intersection with 26 states and 45 transitions. [2020-04-18 15:06:46,398 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states. [2020-04-18 15:06:46,399 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-04-18 15:06:46,399 INFO L105 Mcr]: ---- MCR iteration 0 ---- [2020-04-18 15:06:46,399 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 15:06:46,400 INFO L82 PathProgramCache]: Analyzing trace with hash 1822459802, now seen corresponding path program 2 times [2020-04-18 15:06:46,400 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 15:06:46,400 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [676933223] [2020-04-18 15:06:46,400 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 15:06:46,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 15:06:46,451 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 15:06:46,451 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [676933223] [2020-04-18 15:06:46,452 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 15:06:46,452 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-04-18 15:06:46,452 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 15:06:46,453 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 15:06:46,454 INFO L259 McrAutomatonBuilder]: Finished intersection with 11 states and 11 transitions. [2020-04-18 15:06:46,454 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 15:06:46,458 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 0 times. [2020-04-18 15:06:46,459 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-04-18 15:06:46,459 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-04-18 15:06:46,459 INFO L87 Difference]: Start difference. First operand 26 states. Second operand 3 states. [2020-04-18 15:06:46,465 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 15:06:46,466 INFO L93 Difference]: Finished difference Result 30 states and 49 transitions. [2020-04-18 15:06:46,466 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 49 transitions. [2020-04-18 15:06:46,466 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-04-18 15:06:46,466 INFO L105 Mcr]: ---- MCR iteration 1 ---- [2020-04-18 15:06:46,467 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 15:06:46,468 INFO L82 PathProgramCache]: Analyzing trace with hash 1822423532, now seen corresponding path program 3 times [2020-04-18 15:06:46,469 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 15:06:46,469 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [630849227] [2020-04-18 15:06:46,469 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 15:06:46,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 15:06:46,541 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 15:06:46,541 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [630849227] [2020-04-18 15:06:46,542 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 15:06:46,542 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-04-18 15:06:46,542 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 15:06:46,543 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 15:06:46,544 INFO L259 McrAutomatonBuilder]: Finished intersection with 18 states and 26 transitions. [2020-04-18 15:06:46,545 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 15:06:46,554 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 0 times. [2020-04-18 15:06:46,554 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-04-18 15:06:46,555 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-04-18 15:06:46,555 INFO L87 Difference]: Start difference. First operand 30 states and 49 transitions. Second operand 4 states. [2020-04-18 15:06:46,568 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 15:06:46,568 INFO L93 Difference]: Finished difference Result 33 states and 51 transitions. [2020-04-18 15:06:46,568 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 51 transitions. [2020-04-18 15:06:46,568 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-04-18 15:06:46,569 INFO L105 Mcr]: ---- MCR iteration 2 ---- [2020-04-18 15:06:46,569 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 15:06:46,569 INFO L82 PathProgramCache]: Analyzing trace with hash 1840071362, now seen corresponding path program 4 times [2020-04-18 15:06:46,571 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 15:06:46,571 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1102034224] [2020-04-18 15:06:46,571 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 15:06:46,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 15:06:46,675 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 15:06:46,676 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1102034224] [2020-04-18 15:06:46,676 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 15:06:46,676 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-04-18 15:06:46,676 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 15:06:46,677 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 15:06:46,679 INFO L259 McrAutomatonBuilder]: Finished intersection with 17 states and 23 transitions. [2020-04-18 15:06:46,679 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 15:06:46,700 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 0 times. [2020-04-18 15:06:46,700 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-04-18 15:06:46,701 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2020-04-18 15:06:46,701 INFO L87 Difference]: Start difference. First operand 33 states and 51 transitions. Second operand 4 states. [2020-04-18 15:06:46,713 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 15:06:46,713 INFO L93 Difference]: Finished difference Result 33 states and 51 transitions. [2020-04-18 15:06:46,713 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 51 transitions. [2020-04-18 15:06:46,714 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-18 15:06:46,714 INFO L354 FreeRefinementEngine]: Using interpolant generator StrategyModuleMcr [446946885] [2020-04-18 15:06:46,714 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-04-18 15:06:46,715 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2] total 2 [2020-04-18 15:06:46,715 INFO L156 tionRefinementEngine]: Using interpolant automaton builder StrategyModuleMcr [446946885] [2020-04-18 15:06:46,715 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-04-18 15:06:46,715 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy MCR [2020-04-18 15:06:46,715 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-04-18 15:06:46,716 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2020-04-18 15:06:46,716 INFO L87 Difference]: Start difference. First operand 36 states and 63 transitions. Second operand 7 states. [2020-04-18 15:06:46,866 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 15:06:46,867 INFO L93 Difference]: Finished difference Result 39 states and 61 transitions. [2020-04-18 15:06:46,867 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-04-18 15:06:46,867 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 9 [2020-04-18 15:06:46,867 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 15:06:46,868 INFO L225 Difference]: With dead ends: 39 [2020-04-18 15:06:46,868 INFO L226 Difference]: Without dead ends: 29 [2020-04-18 15:06:46,869 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=78, Invalid=162, Unknown=0, NotChecked=0, Total=240 [2020-04-18 15:06:46,869 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2020-04-18 15:06:46,872 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 29. [2020-04-18 15:06:46,872 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2020-04-18 15:06:46,872 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 44 transitions. [2020-04-18 15:06:46,873 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 44 transitions. Word has length 9 [2020-04-18 15:06:46,873 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 15:06:46,873 INFO L479 AbstractCegarLoop]: Abstraction has 29 states and 44 transitions. [2020-04-18 15:06:46,873 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-04-18 15:06:46,873 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 44 transitions. [2020-04-18 15:06:46,874 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-04-18 15:06:46,874 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 15:06:46,874 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 15:06:46,874 INFO L427 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 15:06:46,875 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 15:06:46,875 INFO L82 PathProgramCache]: Analyzing trace with hash 419248155, now seen corresponding path program 1 times [2020-04-18 15:06:46,875 INFO L163 FreeRefinementEngine]: Executing refinement strategy MCR [2020-04-18 15:06:46,876 INFO L354 FreeRefinementEngine]: Using trace check StrategyModuleMcr [1054359907] [2020-04-18 15:06:46,876 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 15:06:46,877 INFO L259 McrAutomatonBuilder]: Finished intersection with 34 states and 62 transitions. [2020-04-18 15:06:46,877 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states. [2020-04-18 15:06:46,878 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-04-18 15:06:46,878 INFO L105 Mcr]: ---- MCR iteration 0 ---- [2020-04-18 15:06:46,878 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 15:06:46,878 INFO L82 PathProgramCache]: Analyzing trace with hash 661679175, now seen corresponding path program 2 times [2020-04-18 15:06:46,879 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 15:06:46,879 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1216633516] [2020-04-18 15:06:46,879 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 15:06:46,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 15:06:46,916 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 15:06:46,916 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1216633516] [2020-04-18 15:06:46,917 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 15:06:46,917 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-04-18 15:06:46,917 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 15:06:46,918 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 15:06:46,919 INFO L259 McrAutomatonBuilder]: Finished intersection with 12 states and 12 transitions. [2020-04-18 15:06:46,919 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 15:06:46,923 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 0 times. [2020-04-18 15:06:46,923 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-04-18 15:06:46,923 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-04-18 15:06:46,923 INFO L87 Difference]: Start difference. First operand 34 states. Second operand 3 states. [2020-04-18 15:06:46,926 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 15:06:46,926 INFO L93 Difference]: Finished difference Result 40 states and 69 transitions. [2020-04-18 15:06:46,926 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 69 transitions. [2020-04-18 15:06:46,927 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-04-18 15:06:46,927 INFO L105 Mcr]: ---- MCR iteration 1 ---- [2020-04-18 15:06:46,927 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 15:06:46,927 INFO L82 PathProgramCache]: Analyzing trace with hash 660554805, now seen corresponding path program 3 times [2020-04-18 15:06:46,928 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 15:06:46,928 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2138360949] [2020-04-18 15:06:46,928 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 15:06:46,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 15:06:46,986 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 15:06:46,986 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2138360949] [2020-04-18 15:06:46,986 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 15:06:46,987 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-04-18 15:06:46,987 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 15:06:46,988 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 15:06:46,989 INFO L259 McrAutomatonBuilder]: Finished intersection with 20 states and 29 transitions. [2020-04-18 15:06:46,990 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 15:06:47,003 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 0 times. [2020-04-18 15:06:47,003 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-04-18 15:06:47,003 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-04-18 15:06:47,004 INFO L87 Difference]: Start difference. First operand 40 states and 69 transitions. Second operand 4 states. [2020-04-18 15:06:47,018 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 15:06:47,019 INFO L93 Difference]: Finished difference Result 46 states and 76 transitions. [2020-04-18 15:06:47,019 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states and 76 transitions. [2020-04-18 15:06:47,019 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-04-18 15:06:47,019 INFO L105 Mcr]: ---- MCR iteration 2 ---- [2020-04-18 15:06:47,020 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 15:06:47,020 INFO L82 PathProgramCache]: Analyzing trace with hash 1207651935, now seen corresponding path program 4 times [2020-04-18 15:06:47,020 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 15:06:47,020 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [697103242] [2020-04-18 15:06:47,020 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 15:06:47,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 15:06:47,095 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 15:06:47,096 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [697103242] [2020-04-18 15:06:47,096 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 15:06:47,096 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-04-18 15:06:47,097 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 15:06:47,097 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 15:06:47,099 INFO L259 McrAutomatonBuilder]: Finished intersection with 20 states and 28 transitions. [2020-04-18 15:06:47,099 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 15:06:47,121 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 1 times. [2020-04-18 15:06:47,122 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-04-18 15:06:47,122 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2020-04-18 15:06:47,122 INFO L87 Difference]: Start difference. First operand 46 states and 76 transitions. Second operand 4 states. [2020-04-18 15:06:47,148 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 15:06:47,148 INFO L93 Difference]: Finished difference Result 52 states and 81 transitions. [2020-04-18 15:06:47,148 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 81 transitions. [2020-04-18 15:06:47,149 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-04-18 15:06:47,149 INFO L105 Mcr]: ---- MCR iteration 3 ---- [2020-04-18 15:06:47,149 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 15:06:47,149 INFO L82 PathProgramCache]: Analyzing trace with hash 419248155, now seen corresponding path program 5 times [2020-04-18 15:06:47,150 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 15:06:47,150 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1178059440] [2020-04-18 15:06:47,150 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 15:06:47,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 15:06:47,209 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 15:06:47,209 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1178059440] [2020-04-18 15:06:47,209 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 15:06:47,210 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-04-18 15:06:47,210 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 15:06:47,212 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 15:06:47,214 INFO L259 McrAutomatonBuilder]: Finished intersection with 19 states and 26 transitions. [2020-04-18 15:06:47,214 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 15:06:47,266 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 3 times. [2020-04-18 15:06:47,266 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-04-18 15:06:47,267 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2020-04-18 15:06:47,267 INFO L87 Difference]: Start difference. First operand 52 states and 81 transitions. Second operand 6 states. [2020-04-18 15:06:47,308 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 15:06:47,308 INFO L93 Difference]: Finished difference Result 52 states and 81 transitions. [2020-04-18 15:06:47,309 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 81 transitions. [2020-04-18 15:06:47,310 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-18 15:06:47,310 INFO L354 FreeRefinementEngine]: Using interpolant generator StrategyModuleMcr [1054359907] [2020-04-18 15:06:47,310 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-04-18 15:06:47,310 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3] total 3 [2020-04-18 15:06:47,311 INFO L156 tionRefinementEngine]: Using interpolant automaton builder StrategyModuleMcr [1054359907] [2020-04-18 15:06:47,311 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-04-18 15:06:47,311 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy MCR [2020-04-18 15:06:47,311 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-04-18 15:06:47,311 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=98, Unknown=0, NotChecked=0, Total=132 [2020-04-18 15:06:47,311 INFO L87 Difference]: Start difference. First operand 29 states and 44 transitions. Second operand 9 states. [2020-04-18 15:06:47,434 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 15:06:47,434 INFO L93 Difference]: Finished difference Result 27 states and 38 transitions. [2020-04-18 15:06:47,434 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-04-18 15:06:47,434 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 10 [2020-04-18 15:06:47,435 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 15:06:47,435 INFO L225 Difference]: With dead ends: 27 [2020-04-18 15:06:47,435 INFO L226 Difference]: Without dead ends: 22 [2020-04-18 15:06:47,436 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=76, Invalid=196, Unknown=0, NotChecked=0, Total=272 [2020-04-18 15:06:47,436 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22 states. [2020-04-18 15:06:47,438 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22 to 22. [2020-04-18 15:06:47,438 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2020-04-18 15:06:47,438 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 30 transitions. [2020-04-18 15:06:47,438 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 30 transitions. Word has length 10 [2020-04-18 15:06:47,439 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 15:06:47,439 INFO L479 AbstractCegarLoop]: Abstraction has 22 states and 30 transitions. [2020-04-18 15:06:47,439 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-04-18 15:06:47,439 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 30 transitions. [2020-04-18 15:06:47,439 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-04-18 15:06:47,440 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 15:06:47,440 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 15:06:47,440 INFO L427 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 15:06:47,440 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 15:06:47,440 INFO L82 PathProgramCache]: Analyzing trace with hash -830614075, now seen corresponding path program 1 times [2020-04-18 15:06:47,441 INFO L163 FreeRefinementEngine]: Executing refinement strategy MCR [2020-04-18 15:06:47,441 INFO L354 FreeRefinementEngine]: Using trace check StrategyModuleMcr [594785111] [2020-04-18 15:06:47,441 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 15:06:47,442 INFO L259 McrAutomatonBuilder]: Finished intersection with 58 states and 120 transitions. [2020-04-18 15:06:47,443 INFO L276 IsEmpty]: Start isEmpty. Operand 58 states. [2020-04-18 15:06:47,443 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-04-18 15:06:47,444 INFO L105 Mcr]: ---- MCR iteration 0 ---- [2020-04-18 15:06:47,444 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 15:06:47,444 INFO L82 PathProgramCache]: Analyzing trace with hash 218531441, now seen corresponding path program 2 times [2020-04-18 15:06:47,444 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 15:06:47,445 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [524394175] [2020-04-18 15:06:47,445 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 15:06:47,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 15:06:47,478 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 15:06:47,478 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [524394175] [2020-04-18 15:06:47,479 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 15:06:47,479 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-04-18 15:06:47,479 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 15:06:47,480 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 15:06:47,482 INFO L259 McrAutomatonBuilder]: Finished intersection with 17 states and 20 transitions. [2020-04-18 15:06:47,483 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 15:06:47,492 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 0 times. [2020-04-18 15:06:47,492 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-04-18 15:06:47,492 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-04-18 15:06:47,492 INFO L87 Difference]: Start difference. First operand 58 states. Second operand 3 states. [2020-04-18 15:06:47,500 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 15:06:47,501 INFO L93 Difference]: Finished difference Result 72 states and 140 transitions. [2020-04-18 15:06:47,501 INFO L276 IsEmpty]: Start isEmpty. Operand 72 states and 140 transitions. [2020-04-18 15:06:47,501 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-04-18 15:06:47,502 INFO L105 Mcr]: ---- MCR iteration 1 ---- [2020-04-18 15:06:47,502 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 15:06:47,502 INFO L82 PathProgramCache]: Analyzing trace with hash -861988129, now seen corresponding path program 3 times [2020-04-18 15:06:47,502 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 15:06:47,503 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1609264845] [2020-04-18 15:06:47,503 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 15:06:47,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 15:06:47,529 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 15:06:47,529 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1609264845] [2020-04-18 15:06:47,529 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 15:06:47,530 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-04-18 15:06:47,530 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 15:06:47,531 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 15:06:47,533 INFO L259 McrAutomatonBuilder]: Finished intersection with 32 states and 50 transitions. [2020-04-18 15:06:47,533 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 15:06:47,542 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 0 times. [2020-04-18 15:06:47,543 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-04-18 15:06:47,543 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-04-18 15:06:47,543 INFO L87 Difference]: Start difference. First operand 72 states and 140 transitions. Second operand 4 states. [2020-04-18 15:06:47,554 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 15:06:47,555 INFO L93 Difference]: Finished difference Result 90 states and 173 transitions. [2020-04-18 15:06:47,555 INFO L276 IsEmpty]: Start isEmpty. Operand 90 states and 173 transitions. [2020-04-18 15:06:47,555 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-04-18 15:06:47,556 INFO L105 Mcr]: ---- MCR iteration 2 ---- [2020-04-18 15:06:47,556 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 15:06:47,556 INFO L82 PathProgramCache]: Analyzing trace with hash 912343689, now seen corresponding path program 4 times [2020-04-18 15:06:47,556 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 15:06:47,556 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1928349405] [2020-04-18 15:06:47,557 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 15:06:47,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 15:06:47,606 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 15:06:47,606 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1928349405] [2020-04-18 15:06:47,606 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 15:06:47,607 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-04-18 15:06:47,607 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 15:06:47,608 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 15:06:47,609 INFO L259 McrAutomatonBuilder]: Finished intersection with 23 states and 32 transitions. [2020-04-18 15:06:47,610 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 15:06:47,628 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 1 times. [2020-04-18 15:06:47,628 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-04-18 15:06:47,629 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2020-04-18 15:06:47,629 INFO L87 Difference]: Start difference. First operand 90 states and 173 transitions. Second operand 4 states. [2020-04-18 15:06:47,655 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 15:06:47,655 INFO L93 Difference]: Finished difference Result 112 states and 202 transitions. [2020-04-18 15:06:47,656 INFO L276 IsEmpty]: Start isEmpty. Operand 112 states and 202 transitions. [2020-04-18 15:06:47,656 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-04-18 15:06:47,656 INFO L105 Mcr]: ---- MCR iteration 3 ---- [2020-04-18 15:06:47,656 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 15:06:47,657 INFO L82 PathProgramCache]: Analyzing trace with hash -829444795, now seen corresponding path program 5 times [2020-04-18 15:06:47,657 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 15:06:47,657 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [674720579] [2020-04-18 15:06:47,657 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 15:06:47,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 15:06:47,735 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 15:06:47,736 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [674720579] [2020-04-18 15:06:47,736 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 15:06:47,736 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-04-18 15:06:47,736 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 15:06:47,737 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 15:06:47,739 INFO L259 McrAutomatonBuilder]: Finished intersection with 21 states and 28 transitions. [2020-04-18 15:06:47,739 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 15:06:47,770 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 3 times. [2020-04-18 15:06:47,770 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-04-18 15:06:47,771 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2020-04-18 15:06:47,771 INFO L87 Difference]: Start difference. First operand 112 states and 202 transitions. Second operand 6 states. [2020-04-18 15:06:47,822 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 15:06:47,822 INFO L93 Difference]: Finished difference Result 116 states and 204 transitions. [2020-04-18 15:06:47,822 INFO L276 IsEmpty]: Start isEmpty. Operand 116 states and 204 transitions. [2020-04-18 15:06:47,823 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-04-18 15:06:47,824 INFO L105 Mcr]: ---- MCR iteration 4 ---- [2020-04-18 15:06:47,824 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 15:06:47,824 INFO L82 PathProgramCache]: Analyzing trace with hash -830614075, now seen corresponding path program 6 times [2020-04-18 15:06:47,825 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 15:06:47,825 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [842175280] [2020-04-18 15:06:47,826 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 15:06:47,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 15:06:47,850 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 15:06:47,850 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [842175280] [2020-04-18 15:06:47,850 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 15:06:47,851 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-04-18 15:06:47,851 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 15:06:47,852 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 15:06:47,853 INFO L259 McrAutomatonBuilder]: Finished intersection with 21 states and 28 transitions. [2020-04-18 15:06:47,853 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 15:06:47,866 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 1 times. [2020-04-18 15:06:47,866 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-04-18 15:06:47,866 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=120, Unknown=0, NotChecked=0, Total=156 [2020-04-18 15:06:47,866 INFO L87 Difference]: Start difference. First operand 116 states and 204 transitions. Second operand 3 states. [2020-04-18 15:06:47,871 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 15:06:47,872 INFO L93 Difference]: Finished difference Result 164 states and 268 transitions. [2020-04-18 15:06:47,872 INFO L276 IsEmpty]: Start isEmpty. Operand 164 states and 268 transitions. [2020-04-18 15:06:47,872 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-18 15:06:47,873 INFO L354 FreeRefinementEngine]: Using interpolant generator StrategyModuleMcr [594785111] [2020-04-18 15:06:47,873 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-04-18 15:06:47,873 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2] total 2 [2020-04-18 15:06:47,873 INFO L156 tionRefinementEngine]: Using interpolant automaton builder StrategyModuleMcr [594785111] [2020-04-18 15:06:47,874 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-04-18 15:06:47,874 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy MCR [2020-04-18 15:06:47,874 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-04-18 15:06:47,874 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=120, Unknown=0, NotChecked=0, Total=156 [2020-04-18 15:06:47,875 INFO L87 Difference]: Start difference. First operand 22 states and 30 transitions. Second operand 10 states. [2020-04-18 15:06:47,977 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 15:06:47,978 INFO L93 Difference]: Finished difference Result 21 states and 29 transitions. [2020-04-18 15:06:47,978 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-04-18 15:06:47,978 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 12 [2020-04-18 15:06:47,979 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 15:06:47,979 INFO L225 Difference]: With dead ends: 21 [2020-04-18 15:06:47,979 INFO L226 Difference]: Without dead ends: 0 [2020-04-18 15:06:47,980 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 71 GetRequests, 54 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 48 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=82, Invalid=260, Unknown=0, NotChecked=0, Total=342 [2020-04-18 15:06:47,980 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-04-18 15:06:47,980 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-04-18 15:06:47,981 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-04-18 15:06:47,981 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-04-18 15:06:47,981 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 12 [2020-04-18 15:06:47,981 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 15:06:47,981 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-04-18 15:06:47,982 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-04-18 15:06:47,982 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-04-18 15:06:47,982 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-18 15:06:47,986 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 18.04 03:06:47 BasicIcfg [2020-04-18 15:06:47,986 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-04-18 15:06:47,989 INFO L168 Benchmark]: Toolchain (without parser) took 5023.18 ms. Allocated memory was 136.8 MB in the beginning and 250.1 MB in the end (delta: 113.2 MB). Free memory was 99.9 MB in the beginning and 125.0 MB in the end (delta: -25.1 MB). Peak memory consumption was 88.2 MB. Max. memory is 7.1 GB. [2020-04-18 15:06:47,989 INFO L168 Benchmark]: CDTParser took 0.22 ms. Allocated memory is still 136.8 MB. Free memory was 120.0 MB in the beginning and 119.8 MB in the end (delta: 209.8 kB). Peak memory consumption was 209.8 kB. Max. memory is 7.1 GB. [2020-04-18 15:06:47,990 INFO L168 Benchmark]: CACSL2BoogieTranslator took 653.47 ms. Allocated memory was 136.8 MB in the beginning and 201.3 MB in the end (delta: 64.5 MB). Free memory was 97.9 MB in the beginning and 159.1 MB in the end (delta: -61.1 MB). Peak memory consumption was 25.2 MB. Max. memory is 7.1 GB. [2020-04-18 15:06:47,991 INFO L168 Benchmark]: Boogie Procedure Inliner took 42.94 ms. Allocated memory is still 201.3 MB. Free memory was 158.4 MB in the beginning and 156.4 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 7.1 GB. [2020-04-18 15:06:47,992 INFO L168 Benchmark]: Boogie Preprocessor took 23.51 ms. Allocated memory is still 201.3 MB. Free memory was 156.4 MB in the beginning and 155.0 MB in the end (delta: 1.4 MB). Peak memory consumption was 1.4 MB. Max. memory is 7.1 GB. [2020-04-18 15:06:47,992 INFO L168 Benchmark]: RCFGBuilder took 419.52 ms. Allocated memory is still 201.3 MB. Free memory was 155.0 MB in the beginning and 135.4 MB in the end (delta: 19.6 MB). Peak memory consumption was 19.6 MB. Max. memory is 7.1 GB. [2020-04-18 15:06:47,993 INFO L168 Benchmark]: TraceAbstraction took 3864.18 ms. Allocated memory was 201.3 MB in the beginning and 250.1 MB in the end (delta: 48.8 MB). Free memory was 134.7 MB in the beginning and 125.0 MB in the end (delta: 9.8 MB). Peak memory consumption was 58.5 MB. Max. memory is 7.1 GB. [2020-04-18 15:06:47,997 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.22 ms. Allocated memory is still 136.8 MB. Free memory was 120.0 MB in the beginning and 119.8 MB in the end (delta: 209.8 kB). Peak memory consumption was 209.8 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 653.47 ms. Allocated memory was 136.8 MB in the beginning and 201.3 MB in the end (delta: 64.5 MB). Free memory was 97.9 MB in the beginning and 159.1 MB in the end (delta: -61.1 MB). Peak memory consumption was 25.2 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 42.94 ms. Allocated memory is still 201.3 MB. Free memory was 158.4 MB in the beginning and 156.4 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 23.51 ms. Allocated memory is still 201.3 MB. Free memory was 156.4 MB in the beginning and 155.0 MB in the end (delta: 1.4 MB). Peak memory consumption was 1.4 MB. Max. memory is 7.1 GB. * RCFGBuilder took 419.52 ms. Allocated memory is still 201.3 MB. Free memory was 155.0 MB in the beginning and 135.4 MB in the end (delta: 19.6 MB). Peak memory consumption was 19.6 MB. Max. memory is 7.1 GB. * TraceAbstraction took 3864.18 ms. Allocated memory was 201.3 MB in the beginning and 250.1 MB in the end (delta: 48.8 MB). Free memory was 134.7 MB in the beginning and 125.0 MB in the end (delta: 9.8 MB). Peak memory consumption was 58.5 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks LbeTime: 1.3s, 60 ProgramPointsBefore, 22 ProgramPointsAfterwards, 55 TransitionsBefore, 15 TransitionsAfterwards, 672 CoEnabledTransitionPairs, 7 FixpointIterations, 12 TrivialSequentialCompositions, 28 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 9 ConcurrentYvCompositions, 2 ChoiceCompositions, 371 VarBasedMoverChecksPositive, 21 VarBasedMoverChecksNegative, 0 SemBasedMoverChecksPositive, 0 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.0s, 0 MoverChecksTotal, 1251 CheckedPairsTotal, 49 TotalNumberOfCompositions - 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 3 procedures, 54 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 3.7s, OverallIterations: 6, TraceHistogramMax: 1, AutomataDifference: 0.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 1.4s, HoareTripleCheckerStatistics: 68 SDtfs, 92 SDslu, 114 SDs, 0 SdLazy, 137 SolverSat, 15 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 183 GetRequests, 130 SyntacticMatches, 0 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 108 ImplicationChecksByTransitivity, 0.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=74occurred 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: 0.0s AutomataMinimizationTime, 6 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 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...