/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -s ../../../trunk/examples/settings/automizer/mcr/svcomp-Reach-32bit-Automizer_Default-noMmResRef-FA-McrAutomaton-WP.epf -i ../../../trunk/examples/svcomp/pthread-wmm/safe009_pso.opt.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-bf4350c [2020-09-18 00:29:35,573 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-18 00:29:35,576 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-18 00:29:35,604 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-18 00:29:35,604 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-18 00:29:35,605 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-18 00:29:35,607 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-18 00:29:35,608 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-18 00:29:35,610 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-18 00:29:35,611 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-18 00:29:35,612 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-18 00:29:35,613 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-18 00:29:35,613 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-18 00:29:35,614 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-18 00:29:35,615 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-18 00:29:35,617 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-18 00:29:35,617 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-18 00:29:35,618 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-18 00:29:35,620 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-18 00:29:35,622 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-18 00:29:35,623 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-18 00:29:35,625 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-18 00:29:35,626 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-18 00:29:35,627 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-18 00:29:35,629 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-18 00:29:35,629 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-18 00:29:35,630 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-18 00:29:35,630 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-18 00:29:35,631 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-18 00:29:35,632 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-18 00:29:35,632 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-18 00:29:35,633 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-18 00:29:35,634 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-18 00:29:35,634 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-18 00:29:35,635 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-18 00:29:35,636 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-18 00:29:35,636 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-18 00:29:35,637 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-18 00:29:35,637 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-18 00:29:35,638 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-18 00:29:35,638 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-18 00:29:35,639 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/mcr/svcomp-Reach-32bit-Automizer_Default-noMmResRef-FA-McrAutomaton-WP.epf [2020-09-18 00:29:35,664 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-18 00:29:35,665 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-18 00:29:35,666 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-18 00:29:35,666 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-18 00:29:35,666 INFO L138 SettingsManager]: * Use SBE=true [2020-09-18 00:29:35,666 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-18 00:29:35,667 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-18 00:29:35,667 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-18 00:29:35,667 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-18 00:29:35,667 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-18 00:29:35,667 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-18 00:29:35,668 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-18 00:29:35,668 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-18 00:29:35,668 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-18 00:29:35,668 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-18 00:29:35,669 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-18 00:29:35,669 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-18 00:29:35,669 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-18 00:29:35,669 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-18 00:29:35,669 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-18 00:29:35,670 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-18 00:29:35,670 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-18 00:29:35,670 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-18 00:29:35,670 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=Craig_NestedInterpolation [2020-09-18 00:29:35,671 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-18 00:29:35,671 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-18 00:29:35,671 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-18 00:29:35,671 INFO L138 SettingsManager]: * Override the interpolant automaton setting of the refinement strategy=true [2020-09-18 00:29:35,671 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=VARIABLE_BASED_MOVER_CHECK [2020-09-18 00:29:35,672 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-18 00:29:35,672 INFO L138 SettingsManager]: * Interpolant automaton=MCR [2020-09-18 00:29:36,144 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-18 00:29:36,170 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-18 00:29:36,177 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-18 00:29:36,179 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-18 00:29:36,179 INFO L275 PluginConnector]: CDTParser initialized [2020-09-18 00:29:36,182 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe009_pso.opt.i [2020-09-18 00:29:36,264 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9fca940d3/aa4c927ebff540d0b198cfc5e01e61a2/FLAGf431d8504 [2020-09-18 00:29:36,968 INFO L306 CDTParser]: Found 1 translation units. [2020-09-18 00:29:36,969 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe009_pso.opt.i [2020-09-18 00:29:36,988 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9fca940d3/aa4c927ebff540d0b198cfc5e01e61a2/FLAGf431d8504 [2020-09-18 00:29:37,181 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9fca940d3/aa4c927ebff540d0b198cfc5e01e61a2 [2020-09-18 00:29:37,201 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-18 00:29:37,207 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2020-09-18 00:29:37,211 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-18 00:29:37,212 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-18 00:29:37,217 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-18 00:29:37,219 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.09 12:29:37" (1/1) ... [2020-09-18 00:29:37,224 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2b5614b6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.09 12:29:37, skipping insertion in model container [2020-09-18 00:29:37,225 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.09 12:29:37" (1/1) ... [2020-09-18 00:29:37,237 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-18 00:29:37,313 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-18 00:29:37,844 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-18 00:29:37,864 INFO L203 MainTranslator]: Completed pre-run [2020-09-18 00:29:37,954 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-18 00:29:38,063 INFO L208 MainTranslator]: Completed translation [2020-09-18 00:29:38,065 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.09 12:29:38 WrapperNode [2020-09-18 00:29:38,065 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-18 00:29:38,066 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-09-18 00:29:38,066 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-09-18 00:29:38,067 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-09-18 00:29:38,079 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.09 12:29:38" (1/1) ... [2020-09-18 00:29:38,098 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.09 12:29:38" (1/1) ... [2020-09-18 00:29:38,122 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-09-18 00:29:38,123 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-18 00:29:38,123 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-18 00:29:38,123 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-18 00:29:38,135 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.09 12:29:38" (1/1) ... [2020-09-18 00:29:38,136 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.09 12:29:38" (1/1) ... [2020-09-18 00:29:38,139 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.09 12:29:38" (1/1) ... [2020-09-18 00:29:38,139 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.09 12:29:38" (1/1) ... [2020-09-18 00:29:38,146 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.09 12:29:38" (1/1) ... [2020-09-18 00:29:38,149 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.09 12:29:38" (1/1) ... [2020-09-18 00:29:38,152 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.09 12:29:38" (1/1) ... [2020-09-18 00:29:38,155 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-18 00:29:38,156 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-18 00:29:38,156 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-18 00:29:38,156 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-18 00:29:38,158 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.09 12:29:38" (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 [2020-09-18 00:29:38,242 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-09-18 00:29:38,242 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2020-09-18 00:29:38,242 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-09-18 00:29:38,243 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-09-18 00:29:38,243 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2020-09-18 00:29:38,243 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2020-09-18 00:29:38,244 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2020-09-18 00:29:38,245 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2020-09-18 00:29:38,245 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2020-09-18 00:29:38,246 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2020-09-18 00:29:38,246 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2020-09-18 00:29:38,246 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-18 00:29:38,246 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-18 00:29:38,249 WARN L208 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2020-09-18 00:29:38,652 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-18 00:29:38,652 INFO L298 CfgBuilder]: Removed 8 assume(true) statements. [2020-09-18 00:29:38,658 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.09 12:29:38 BoogieIcfgContainer [2020-09-18 00:29:38,658 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-18 00:29:38,660 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-18 00:29:38,660 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-18 00:29:38,664 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-18 00:29:38,664 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.09 12:29:37" (1/3) ... [2020-09-18 00:29:38,665 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7902cf4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.09 12:29:38, skipping insertion in model container [2020-09-18 00:29:38,665 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.09 12:29:38" (2/3) ... [2020-09-18 00:29:38,666 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7902cf4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.09 12:29:38, skipping insertion in model container [2020-09-18 00:29:38,666 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.09 12:29:38" (3/3) ... [2020-09-18 00:29:38,668 INFO L109 eAbstractionObserver]: Analyzing ICFG safe009_pso.opt.i [2020-09-18 00:29:38,680 WARN L146 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2020-09-18 00:29:38,681 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-18 00:29:38,691 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-18 00:29:38,693 INFO L340 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2020-09-18 00:29:38,723 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-18 00:29:38,724 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-18 00:29:38,724 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-18 00:29:38,724 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-18 00:29:38,725 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-18 00:29:38,725 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-18 00:29:38,726 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-18 00:29:38,726 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-18 00:29:38,726 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-18 00:29:38,727 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-18 00:29:38,727 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-18 00:29:38,727 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-18 00:29:38,728 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-18 00:29:38,728 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-18 00:29:38,728 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-18 00:29:38,728 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-18 00:29:38,729 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-18 00:29:38,729 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-18 00:29:38,734 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-18 00:29:38,734 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-18 00:29:38,735 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-18 00:29:38,735 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-18 00:29:38,745 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-18 00:29:38,745 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-18 00:29:38,746 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-18 00:29:38,746 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-18 00:29:38,748 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-18 00:29:38,749 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-18 00:29:38,749 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-18 00:29:38,749 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-18 00:29:38,774 INFO L251 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2020-09-18 00:29:38,802 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-18 00:29:38,802 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-18 00:29:38,802 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-18 00:29:38,803 INFO L378 AbstractCegarLoop]: Backedges is MCR [2020-09-18 00:29:38,803 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-18 00:29:38,803 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-18 00:29:38,803 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-18 00:29:38,803 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-18 00:29:38,821 INFO L152 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 76 places, 68 transitions, 151 flow [2020-09-18 00:29:38,823 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 76 places, 68 transitions, 151 flow [2020-09-18 00:29:38,869 INFO L129 PetriNetUnfolder]: 2/65 cut-off events. [2020-09-18 00:29:38,869 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-09-18 00:29:38,875 INFO L80 FinitePrefix]: Finished finitePrefix Result has 75 conditions, 65 events. 2/65 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 49 event pairs, 0 based on Foata normal form. 0/62 useless extension candidates. Maximal degree in co-relation 54. Up to 2 conditions per place. [2020-09-18 00:29:38,879 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 76 places, 68 transitions, 151 flow [2020-09-18 00:29:38,898 INFO L129 PetriNetUnfolder]: 2/65 cut-off events. [2020-09-18 00:29:38,899 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-09-18 00:29:38,900 INFO L80 FinitePrefix]: Finished finitePrefix Result has 75 conditions, 65 events. 2/65 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 49 event pairs, 0 based on Foata normal form. 0/62 useless extension candidates. Maximal degree in co-relation 54. Up to 2 conditions per place. [2020-09-18 00:29:38,902 INFO L158 etLargeBlockEncoding]: Number of co-enabled transitions 1186 [2020-09-18 00:29:38,903 INFO L182 etLargeBlockEncoding]: Variable Check. [2020-09-18 00:29:40,331 INFO L206 etLargeBlockEncoding]: Checked pairs total: 1951 [2020-09-18 00:29:40,332 INFO L214 etLargeBlockEncoding]: Total number of compositions: 54 [2020-09-18 00:29:40,336 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 30 places, 20 transitions, 55 flow [2020-09-18 00:29:40,361 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 234 states. [2020-09-18 00:29:40,364 INFO L276 IsEmpty]: Start isEmpty. Operand 234 states. [2020-09-18 00:29:40,373 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-09-18 00:29:40,374 INFO L414 BasicCegarLoop]: Found error trace [2020-09-18 00:29:40,375 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-09-18 00:29:40,375 INFO L427 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-18 00:29:40,383 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-18 00:29:40,383 INFO L82 PathProgramCache]: Analyzing trace with hash 364476878, now seen corresponding path program 1 times [2020-09-18 00:29:40,407 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-18 00:29:40,407 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2084350110] [2020-09-18 00:29:40,408 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-18 00:29:40,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-18 00:29:40,684 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-18 00:29:40,685 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2084350110] [2020-09-18 00:29:40,686 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-18 00:29:40,687 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-09-18 00:29:40,688 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1165359632] [2020-09-18 00:29:40,691 INFO L216 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-09-18 00:29:40,697 INFO L271 McrAutomatonBuilder]: Started intersection. [2020-09-18 00:29:40,719 INFO L274 McrAutomatonBuilder]: Finished intersection with 9 states and 8 transitions. [2020-09-18 00:29:40,719 INFO L299 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-09-18 00:29:40,737 INFO L409 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-09-18 00:29:40,741 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-18 00:29:40,741 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-18 00:29:40,764 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-18 00:29:40,766 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-18 00:29:40,769 INFO L87 Difference]: Start difference. First operand 234 states. Second operand 3 states. [2020-09-18 00:29:40,824 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-18 00:29:40,824 INFO L93 Difference]: Finished difference Result 222 states and 615 transitions. [2020-09-18 00:29:40,827 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-18 00:29:40,829 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 8 [2020-09-18 00:29:40,829 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-18 00:29:40,854 INFO L225 Difference]: With dead ends: 222 [2020-09-18 00:29:40,854 INFO L226 Difference]: Without dead ends: 174 [2020-09-18 00:29:40,856 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-18 00:29:40,883 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 174 states. [2020-09-18 00:29:40,918 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 174 to 174. [2020-09-18 00:29:40,920 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 174 states. [2020-09-18 00:29:40,924 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 174 states to 174 states and 463 transitions. [2020-09-18 00:29:40,926 INFO L78 Accepts]: Start accepts. Automaton has 174 states and 463 transitions. Word has length 8 [2020-09-18 00:29:40,927 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-18 00:29:40,927 INFO L479 AbstractCegarLoop]: Abstraction has 174 states and 463 transitions. [2020-09-18 00:29:40,927 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-18 00:29:40,927 INFO L276 IsEmpty]: Start isEmpty. Operand 174 states and 463 transitions. [2020-09-18 00:29:40,928 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-09-18 00:29:40,929 INFO L414 BasicCegarLoop]: Found error trace [2020-09-18 00:29:40,929 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-18 00:29:40,929 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-18 00:29:40,929 INFO L427 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-18 00:29:40,930 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-18 00:29:40,930 INFO L82 PathProgramCache]: Analyzing trace with hash -273417231, now seen corresponding path program 1 times [2020-09-18 00:29:40,930 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-18 00:29:40,931 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [568259644] [2020-09-18 00:29:40,931 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-18 00:29:40,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-18 00:29:41,051 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-18 00:29:41,051 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [568259644] [2020-09-18 00:29:41,052 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-18 00:29:41,053 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-09-18 00:29:41,053 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [758615811] [2020-09-18 00:29:41,054 INFO L216 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-09-18 00:29:41,054 INFO L271 McrAutomatonBuilder]: Started intersection. [2020-09-18 00:29:41,061 INFO L274 McrAutomatonBuilder]: Finished intersection with 15 states and 19 transitions. [2020-09-18 00:29:41,061 INFO L299 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-09-18 00:29:41,136 INFO L409 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-09-18 00:29:41,140 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-18 00:29:41,141 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-18 00:29:41,141 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-18 00:29:41,141 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-18 00:29:41,142 INFO L87 Difference]: Start difference. First operand 174 states and 463 transitions. Second operand 3 states. [2020-09-18 00:29:41,156 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-18 00:29:41,156 INFO L93 Difference]: Finished difference Result 168 states and 441 transitions. [2020-09-18 00:29:41,156 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-18 00:29:41,157 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 9 [2020-09-18 00:29:41,157 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-18 00:29:41,159 INFO L225 Difference]: With dead ends: 168 [2020-09-18 00:29:41,159 INFO L226 Difference]: Without dead ends: 168 [2020-09-18 00:29:41,160 INFO L675 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 [2020-09-18 00:29:41,164 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 168 states. [2020-09-18 00:29:41,177 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 168 to 168. [2020-09-18 00:29:41,177 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 168 states. [2020-09-18 00:29:41,179 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 168 states to 168 states and 441 transitions. [2020-09-18 00:29:41,180 INFO L78 Accepts]: Start accepts. Automaton has 168 states and 441 transitions. Word has length 9 [2020-09-18 00:29:41,180 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-18 00:29:41,180 INFO L479 AbstractCegarLoop]: Abstraction has 168 states and 441 transitions. [2020-09-18 00:29:41,180 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-18 00:29:41,181 INFO L276 IsEmpty]: Start isEmpty. Operand 168 states and 441 transitions. [2020-09-18 00:29:41,182 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-09-18 00:29:41,182 INFO L414 BasicCegarLoop]: Found error trace [2020-09-18 00:29:41,182 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-18 00:29:41,182 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-18 00:29:41,183 INFO L427 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-18 00:29:41,183 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-18 00:29:41,183 INFO L82 PathProgramCache]: Analyzing trace with hash 113999627, now seen corresponding path program 1 times [2020-09-18 00:29:41,183 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-18 00:29:41,184 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [436281491] [2020-09-18 00:29:41,184 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-18 00:29:41,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-18 00:29:41,265 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-18 00:29:41,266 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [436281491] [2020-09-18 00:29:41,266 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-18 00:29:41,266 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-09-18 00:29:41,266 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1297693256] [2020-09-18 00:29:41,267 INFO L216 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-09-18 00:29:41,267 INFO L271 McrAutomatonBuilder]: Started intersection. [2020-09-18 00:29:41,269 INFO L274 McrAutomatonBuilder]: Finished intersection with 17 states and 22 transitions. [2020-09-18 00:29:41,270 INFO L299 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-09-18 00:29:41,319 INFO L409 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-09-18 00:29:41,319 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-18 00:29:41,320 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-18 00:29:41,320 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-18 00:29:41,320 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-18 00:29:41,320 INFO L87 Difference]: Start difference. First operand 168 states and 441 transitions. Second operand 3 states. [2020-09-18 00:29:41,329 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-18 00:29:41,329 INFO L93 Difference]: Finished difference Result 162 states and 422 transitions. [2020-09-18 00:29:41,330 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-18 00:29:41,330 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 10 [2020-09-18 00:29:41,330 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-18 00:29:41,332 INFO L225 Difference]: With dead ends: 162 [2020-09-18 00:29:41,333 INFO L226 Difference]: Without dead ends: 162 [2020-09-18 00:29:41,333 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-18 00:29:41,336 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 162 states. [2020-09-18 00:29:41,353 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 162 to 162. [2020-09-18 00:29:41,353 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 162 states. [2020-09-18 00:29:41,354 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 162 states to 162 states and 422 transitions. [2020-09-18 00:29:41,354 INFO L78 Accepts]: Start accepts. Automaton has 162 states and 422 transitions. Word has length 10 [2020-09-18 00:29:41,355 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-18 00:29:41,355 INFO L479 AbstractCegarLoop]: Abstraction has 162 states and 422 transitions. [2020-09-18 00:29:41,355 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-18 00:29:41,355 INFO L276 IsEmpty]: Start isEmpty. Operand 162 states and 422 transitions. [2020-09-18 00:29:41,359 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-09-18 00:29:41,360 INFO L414 BasicCegarLoop]: Found error trace [2020-09-18 00:29:41,360 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-18 00:29:41,360 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-18 00:29:41,360 INFO L427 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-18 00:29:41,361 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-18 00:29:41,361 INFO L82 PathProgramCache]: Analyzing trace with hash -760979570, now seen corresponding path program 1 times [2020-09-18 00:29:41,361 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-18 00:29:41,361 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1941951986] [2020-09-18 00:29:41,362 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-18 00:29:41,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-18 00:29:41,430 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-18 00:29:41,431 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1941951986] [2020-09-18 00:29:41,431 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-18 00:29:41,431 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-09-18 00:29:41,431 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [564945198] [2020-09-18 00:29:41,432 INFO L216 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-09-18 00:29:41,433 INFO L271 McrAutomatonBuilder]: Started intersection. [2020-09-18 00:29:41,438 INFO L274 McrAutomatonBuilder]: Finished intersection with 27 states and 45 transitions. [2020-09-18 00:29:41,438 INFO L299 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-09-18 00:29:41,548 INFO L409 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-09-18 00:29:41,548 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-18 00:29:41,549 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-18 00:29:41,549 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-18 00:29:41,549 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-18 00:29:41,549 INFO L87 Difference]: Start difference. First operand 162 states and 422 transitions. Second operand 4 states. [2020-09-18 00:29:41,576 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-18 00:29:41,576 INFO L93 Difference]: Finished difference Result 234 states and 596 transitions. [2020-09-18 00:29:41,576 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-09-18 00:29:41,577 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 11 [2020-09-18 00:29:41,577 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-18 00:29:41,578 INFO L225 Difference]: With dead ends: 234 [2020-09-18 00:29:41,578 INFO L226 Difference]: Without dead ends: 132 [2020-09-18 00:29:41,579 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-09-18 00:29:41,581 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 132 states. [2020-09-18 00:29:41,590 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 132 to 132. [2020-09-18 00:29:41,590 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 132 states. [2020-09-18 00:29:41,594 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 132 states to 132 states and 332 transitions. [2020-09-18 00:29:41,595 INFO L78 Accepts]: Start accepts. Automaton has 132 states and 332 transitions. Word has length 11 [2020-09-18 00:29:41,595 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-18 00:29:41,595 INFO L479 AbstractCegarLoop]: Abstraction has 132 states and 332 transitions. [2020-09-18 00:29:41,595 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-18 00:29:41,596 INFO L276 IsEmpty]: Start isEmpty. Operand 132 states and 332 transitions. [2020-09-18 00:29:41,596 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-09-18 00:29:41,596 INFO L414 BasicCegarLoop]: Found error trace [2020-09-18 00:29:41,597 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-18 00:29:41,597 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-18 00:29:41,597 INFO L427 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-18 00:29:41,597 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-18 00:29:41,598 INFO L82 PathProgramCache]: Analyzing trace with hash 452543204, now seen corresponding path program 2 times [2020-09-18 00:29:41,598 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-18 00:29:41,598 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [367911880] [2020-09-18 00:29:41,598 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-18 00:29:41,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-18 00:29:41,710 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-18 00:29:41,710 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [367911880] [2020-09-18 00:29:41,710 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-18 00:29:41,711 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-09-18 00:29:41,712 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [302257844] [2020-09-18 00:29:41,712 INFO L216 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-09-18 00:29:41,714 INFO L271 McrAutomatonBuilder]: Started intersection. [2020-09-18 00:29:41,717 INFO L274 McrAutomatonBuilder]: Finished intersection with 21 states and 31 transitions. [2020-09-18 00:29:41,717 INFO L299 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-09-18 00:29:41,779 INFO L409 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-09-18 00:29:41,779 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-18 00:29:41,780 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-18 00:29:41,780 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-18 00:29:41,780 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-18 00:29:41,781 INFO L87 Difference]: Start difference. First operand 132 states and 332 transitions. Second operand 4 states. [2020-09-18 00:29:41,807 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-18 00:29:41,808 INFO L93 Difference]: Finished difference Result 144 states and 346 transitions. [2020-09-18 00:29:41,808 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-09-18 00:29:41,809 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 11 [2020-09-18 00:29:41,809 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-18 00:29:41,809 INFO L225 Difference]: With dead ends: 144 [2020-09-18 00:29:41,810 INFO L226 Difference]: Without dead ends: 60 [2020-09-18 00:29:41,811 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-09-18 00:29:41,812 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60 states. [2020-09-18 00:29:41,821 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60 to 60. [2020-09-18 00:29:41,822 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 60 states. [2020-09-18 00:29:41,822 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60 states to 60 states and 129 transitions. [2020-09-18 00:29:41,822 INFO L78 Accepts]: Start accepts. Automaton has 60 states and 129 transitions. Word has length 11 [2020-09-18 00:29:41,823 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-18 00:29:41,823 INFO L479 AbstractCegarLoop]: Abstraction has 60 states and 129 transitions. [2020-09-18 00:29:41,823 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-18 00:29:41,823 INFO L276 IsEmpty]: Start isEmpty. Operand 60 states and 129 transitions. [2020-09-18 00:29:41,824 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-09-18 00:29:41,824 INFO L414 BasicCegarLoop]: Found error trace [2020-09-18 00:29:41,824 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-18 00:29:41,824 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-18 00:29:41,824 INFO L427 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-18 00:29:41,826 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-18 00:29:41,826 INFO L82 PathProgramCache]: Analyzing trace with hash 1143893480, now seen corresponding path program 1 times [2020-09-18 00:29:41,826 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-18 00:29:41,827 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1834433110] [2020-09-18 00:29:41,827 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-18 00:29:41,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-18 00:29:41,947 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-18 00:29:41,947 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1834433110] [2020-09-18 00:29:41,948 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-18 00:29:41,948 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-09-18 00:29:41,948 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [54806780] [2020-09-18 00:29:41,949 INFO L216 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-09-18 00:29:41,950 INFO L271 McrAutomatonBuilder]: Started intersection. [2020-09-18 00:29:41,952 INFO L274 McrAutomatonBuilder]: Finished intersection with 17 states and 20 transitions. [2020-09-18 00:29:41,953 INFO L299 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-09-18 00:29:41,978 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 4 conjuncts [2020-09-18 00:29:42,018 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 4 conjuncts [2020-09-18 00:29:42,043 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 4 conjuncts [2020-09-18 00:29:42,079 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 4 conjuncts [2020-09-18 00:29:42,097 INFO L409 McrAutomatonBuilder]: Construction finished. MCR generated 1 new interpolants: [2894#(not (= 3 ~__unbuffered_cnt~0))] [2020-09-18 00:29:42,098 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-18 00:29:42,098 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-18 00:29:42,099 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-18 00:29:42,099 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-18 00:29:42,099 INFO L87 Difference]: Start difference. First operand 60 states and 129 transitions. Second operand 5 states. [2020-09-18 00:29:42,175 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-18 00:29:42,175 INFO L93 Difference]: Finished difference Result 59 states and 111 transitions. [2020-09-18 00:29:42,176 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-09-18 00:29:42,176 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 12 [2020-09-18 00:29:42,176 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-18 00:29:42,177 INFO L225 Difference]: With dead ends: 59 [2020-09-18 00:29:42,177 INFO L226 Difference]: Without dead ends: 38 [2020-09-18 00:29:42,177 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-09-18 00:29:42,178 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2020-09-18 00:29:42,180 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 38. [2020-09-18 00:29:42,180 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38 states. [2020-09-18 00:29:42,180 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 61 transitions. [2020-09-18 00:29:42,180 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 61 transitions. Word has length 12 [2020-09-18 00:29:42,181 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-18 00:29:42,181 INFO L479 AbstractCegarLoop]: Abstraction has 38 states and 61 transitions. [2020-09-18 00:29:42,181 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-18 00:29:42,181 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 61 transitions. [2020-09-18 00:29:42,183 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-09-18 00:29:42,183 INFO L414 BasicCegarLoop]: Found error trace [2020-09-18 00:29:42,183 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-18 00:29:42,183 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-09-18 00:29:42,183 INFO L427 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-18 00:29:42,184 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-18 00:29:42,184 INFO L82 PathProgramCache]: Analyzing trace with hash 1757733921, now seen corresponding path program 1 times [2020-09-18 00:29:42,184 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-18 00:29:42,185 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1955296407] [2020-09-18 00:29:42,185 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-18 00:29:42,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-18 00:29:42,260 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-18 00:29:42,261 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1955296407] [2020-09-18 00:29:42,261 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-18 00:29:42,261 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-18 00:29:42,261 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [50732099] [2020-09-18 00:29:42,262 INFO L216 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-09-18 00:29:42,263 INFO L271 McrAutomatonBuilder]: Started intersection. [2020-09-18 00:29:42,266 INFO L274 McrAutomatonBuilder]: Finished intersection with 20 states and 24 transitions. [2020-09-18 00:29:42,266 INFO L299 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-09-18 00:29:42,273 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 4 conjuncts [2020-09-18 00:29:42,306 INFO L409 McrAutomatonBuilder]: Construction finished. MCR generated 3 new interpolants: [3040#(not (= 3 ~__unbuffered_cnt~0)), 3041#(not (= ~__unbuffered_cnt~0 2)), 3042#(not (= ~__unbuffered_cnt~0 1))] [2020-09-18 00:29:42,307 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-09-18 00:29:42,307 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-18 00:29:42,307 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-09-18 00:29:42,308 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2020-09-18 00:29:42,308 INFO L87 Difference]: Start difference. First operand 38 states and 61 transitions. Second operand 9 states. [2020-09-18 00:29:42,364 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-18 00:29:42,364 INFO L93 Difference]: Finished difference Result 35 states and 53 transitions. [2020-09-18 00:29:42,365 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-09-18 00:29:42,365 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 14 [2020-09-18 00:29:42,365 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-18 00:29:42,366 INFO L225 Difference]: With dead ends: 35 [2020-09-18 00:29:42,366 INFO L226 Difference]: Without dead ends: 29 [2020-09-18 00:29:42,366 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2020-09-18 00:29:42,367 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2020-09-18 00:29:42,368 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 29. [2020-09-18 00:29:42,368 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2020-09-18 00:29:42,369 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 43 transitions. [2020-09-18 00:29:42,369 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 43 transitions. Word has length 14 [2020-09-18 00:29:42,369 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-18 00:29:42,370 INFO L479 AbstractCegarLoop]: Abstraction has 29 states and 43 transitions. [2020-09-18 00:29:42,370 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-09-18 00:29:42,370 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 43 transitions. [2020-09-18 00:29:42,370 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-09-18 00:29:42,371 INFO L414 BasicCegarLoop]: Found error trace [2020-09-18 00:29:42,371 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-18 00:29:42,371 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-09-18 00:29:42,371 INFO L427 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-18 00:29:42,372 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-18 00:29:42,372 INFO L82 PathProgramCache]: Analyzing trace with hash 1250665313, now seen corresponding path program 1 times [2020-09-18 00:29:42,372 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-18 00:29:42,373 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [219219313] [2020-09-18 00:29:42,373 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-18 00:29:42,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-18 00:29:42,414 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-18 00:29:42,414 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [219219313] [2020-09-18 00:29:42,414 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-18 00:29:42,415 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-09-18 00:29:42,415 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [2045964902] [2020-09-18 00:29:42,415 INFO L216 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-09-18 00:29:42,417 INFO L271 McrAutomatonBuilder]: Started intersection. [2020-09-18 00:29:42,421 INFO L274 McrAutomatonBuilder]: Finished intersection with 23 states and 28 transitions. [2020-09-18 00:29:42,422 INFO L299 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-09-18 00:29:42,427 INFO L409 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-09-18 00:29:42,427 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-18 00:29:42,428 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-18 00:29:42,428 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-18 00:29:42,428 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-18 00:29:42,429 INFO L87 Difference]: Start difference. First operand 29 states and 43 transitions. Second operand 3 states. [2020-09-18 00:29:42,434 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-18 00:29:42,434 INFO L93 Difference]: Finished difference Result 28 states and 42 transitions. [2020-09-18 00:29:42,435 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-18 00:29:42,435 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 16 [2020-09-18 00:29:42,435 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-18 00:29:42,435 INFO L225 Difference]: With dead ends: 28 [2020-09-18 00:29:42,435 INFO L226 Difference]: Without dead ends: 0 [2020-09-18 00:29:42,436 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-18 00:29:42,436 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-09-18 00:29:42,436 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-09-18 00:29:42,436 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-09-18 00:29:42,437 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-09-18 00:29:42,437 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 16 [2020-09-18 00:29:42,437 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-18 00:29:42,437 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-09-18 00:29:42,437 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-18 00:29:42,437 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-09-18 00:29:42,438 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-09-18 00:29:42,438 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-09-18 00:29:42,442 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 18.09 12:29:42 BasicIcfg [2020-09-18 00:29:42,442 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-09-18 00:29:42,446 INFO L168 Benchmark]: Toolchain (without parser) took 5242.27 ms. Allocated memory was 145.2 MB in the beginning and 249.0 MB in the end (delta: 103.8 MB). Free memory was 99.5 MB in the beginning and 160.9 MB in the end (delta: -61.4 MB). Peak memory consumption was 42.4 MB. Max. memory is 7.1 GB. [2020-09-18 00:29:42,447 INFO L168 Benchmark]: CDTParser took 0.28 ms. Allocated memory is still 145.2 MB. Free memory was 119.8 MB in the beginning and 119.5 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2020-09-18 00:29:42,448 INFO L168 Benchmark]: CACSL2BoogieTranslator took 854.25 ms. Allocated memory was 145.2 MB in the beginning and 201.9 MB in the end (delta: 56.6 MB). Free memory was 99.1 MB in the beginning and 159.2 MB in the end (delta: -60.1 MB). Peak memory consumption was 23.9 MB. Max. memory is 7.1 GB. [2020-09-18 00:29:42,449 INFO L168 Benchmark]: Boogie Procedure Inliner took 56.22 ms. Allocated memory is still 201.9 MB. Free memory was 159.2 MB in the beginning and 157.2 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 7.1 GB. [2020-09-18 00:29:42,449 INFO L168 Benchmark]: Boogie Preprocessor took 32.71 ms. Allocated memory is still 201.9 MB. Free memory was 157.2 MB in the beginning and 155.8 MB in the end (delta: 1.3 MB). Peak memory consumption was 1.3 MB. Max. memory is 7.1 GB. [2020-09-18 00:29:42,450 INFO L168 Benchmark]: RCFGBuilder took 502.81 ms. Allocated memory is still 201.9 MB. Free memory was 155.8 MB in the beginning and 134.1 MB in the end (delta: 21.7 MB). Peak memory consumption was 21.7 MB. Max. memory is 7.1 GB. [2020-09-18 00:29:42,451 INFO L168 Benchmark]: TraceAbstraction took 3782.81 ms. Allocated memory was 201.9 MB in the beginning and 249.0 MB in the end (delta: 47.2 MB). Free memory was 133.5 MB in the beginning and 160.9 MB in the end (delta: -27.5 MB). Peak memory consumption was 19.7 MB. Max. memory is 7.1 GB. [2020-09-18 00:29:42,455 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.28 ms. Allocated memory is still 145.2 MB. Free memory was 119.8 MB in the beginning and 119.5 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 854.25 ms. Allocated memory was 145.2 MB in the beginning and 201.9 MB in the end (delta: 56.6 MB). Free memory was 99.1 MB in the beginning and 159.2 MB in the end (delta: -60.1 MB). Peak memory consumption was 23.9 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 56.22 ms. Allocated memory is still 201.9 MB. Free memory was 159.2 MB in the beginning and 157.2 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 32.71 ms. Allocated memory is still 201.9 MB. Free memory was 157.2 MB in the beginning and 155.8 MB in the end (delta: 1.3 MB). Peak memory consumption was 1.3 MB. Max. memory is 7.1 GB. * RCFGBuilder took 502.81 ms. Allocated memory is still 201.9 MB. Free memory was 155.8 MB in the beginning and 134.1 MB in the end (delta: 21.7 MB). Peak memory consumption was 21.7 MB. Max. memory is 7.1 GB. * TraceAbstraction took 3782.81 ms. Allocated memory was 201.9 MB in the beginning and 249.0 MB in the end (delta: 47.2 MB). Free memory was 133.5 MB in the beginning and 160.9 MB in the end (delta: -27.5 MB). Peak memory consumption was 19.7 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks LbeTime: 1.5s, 76 ProgramPointsBefore, 30 ProgramPointsAfterwards, 68 TransitionsBefore, 20 TransitionsAfterwards, 1186 CoEnabledTransitionPairs, 7 FixpointIterations, 13 TrivialSequentialCompositions, 37 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 4 ConcurrentYvCompositions, 2 ChoiceCompositions, 606 VarBasedMoverChecksPositive, 20 VarBasedMoverChecksNegative, 0 SemBasedMoverChecksPositive, 0 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.0s, 0 MoverChecksTotal, 1951 CheckedPairsTotal, 54 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 4 procedures, 67 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 3.6s, OverallIterations: 8, TraceHistogramMax: 1, AutomataDifference: 0.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 1.5s, HoareTripleCheckerStatistics: 125 SDtfs, 109 SDslu, 121 SDs, 0 SdLazy, 85 SolverSat, 32 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 70 GetRequests, 47 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=234occurred 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: 0.1s AutomataMinimizationTime, 8 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 0.5s InterpolantComputationTime, 91 NumberOfCodeBlocks, 91 NumberOfCodeBlocksAsserted, 8 NumberOfCheckSat, 83 ConstructedInterpolants, 0 QuantifiedInterpolants, 2691 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 8 InterpolantComputations, 8 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...