/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/safe014_pso.opt.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-bf4350c [2020-09-18 00:51:50,990 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-18 00:51:50,995 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-18 00:51:51,035 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-18 00:51:51,036 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-18 00:51:51,043 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-18 00:51:51,047 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-18 00:51:51,051 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-18 00:51:51,054 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-18 00:51:51,057 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-18 00:51:51,058 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-18 00:51:51,059 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-18 00:51:51,059 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-18 00:51:51,062 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-18 00:51:51,065 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-18 00:51:51,067 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-18 00:51:51,068 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-18 00:51:51,069 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-18 00:51:51,071 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-18 00:51:51,079 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-18 00:51:51,082 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-18 00:51:51,083 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-18 00:51:51,084 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-18 00:51:51,085 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-18 00:51:51,097 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-09-18 00:51:51,111 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-18 00:51:51,112 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-18 00:51:51,113 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-18 00:51:51,114 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-18 00:51:51,116 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-18 00:51:51,116 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-18 00:51:51,117 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-18 00:51:51,117 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-18 00:51:51,118 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-18 00:51:51,119 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-18 00:51:51,119 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-18 00:51:51,120 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 00:51:51,146 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-18 00:51:51,146 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-18 00:51:51,147 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-18 00:51:51,148 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-18 00:51:51,148 INFO L138 SettingsManager]: * Use SBE=true [2020-09-18 00:51:51,148 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-18 00:51:51,148 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-18 00:51:51,149 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-18 00:51:51,149 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-18 00:51:51,149 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-18 00:51:51,149 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-18 00:51:51,149 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-18 00:51:51,150 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-18 00:51:51,150 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-18 00:51:51,150 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-18 00:51:51,150 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-18 00:51:51,150 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-18 00:51:51,151 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-18 00:51:51,151 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-18 00:51:51,151 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-18 00:51:51,151 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-18 00:51:51,152 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-18 00:51:51,152 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-18 00:51:51,152 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=Craig_NestedInterpolation [2020-09-18 00:51:51,152 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-18 00:51:51,152 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-18 00:51:51,153 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-18 00:51:51,153 INFO L138 SettingsManager]: * Override the interpolant automaton setting of the refinement strategy=true [2020-09-18 00:51:51,153 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=VARIABLE_BASED_MOVER_CHECK [2020-09-18 00:51:51,153 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-18 00:51:51,153 INFO L138 SettingsManager]: * Interpolant automaton=MCR [2020-09-18 00:51:51,611 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-18 00:51:51,637 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-18 00:51:51,641 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-18 00:51:51,643 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-18 00:51:51,644 INFO L275 PluginConnector]: CDTParser initialized [2020-09-18 00:51:51,646 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe014_pso.opt.i [2020-09-18 00:51:51,739 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7362b4917/d2258e21a0ba4572b6cbde9c42213eeb/FLAG0ed3bbe5a [2020-09-18 00:51:52,384 INFO L306 CDTParser]: Found 1 translation units. [2020-09-18 00:51:52,385 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe014_pso.opt.i [2020-09-18 00:51:52,408 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7362b4917/d2258e21a0ba4572b6cbde9c42213eeb/FLAG0ed3bbe5a [2020-09-18 00:51:52,638 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7362b4917/d2258e21a0ba4572b6cbde9c42213eeb [2020-09-18 00:51:52,653 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-18 00:51:52,661 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2020-09-18 00:51:52,664 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-18 00:51:52,665 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-18 00:51:52,669 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-18 00:51:52,670 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.09 12:51:52" (1/1) ... [2020-09-18 00:51:52,676 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2cd2411b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.09 12:51:52, skipping insertion in model container [2020-09-18 00:51:52,676 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.09 12:51:52" (1/1) ... [2020-09-18 00:51:52,688 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-18 00:51:52,767 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-18 00:51:53,274 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-18 00:51:53,289 INFO L203 MainTranslator]: Completed pre-run [2020-09-18 00:51:53,351 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-18 00:51:53,437 INFO L208 MainTranslator]: Completed translation [2020-09-18 00:51:53,438 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.09 12:51:53 WrapperNode [2020-09-18 00:51:53,438 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-18 00:51:53,439 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-09-18 00:51:53,439 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-09-18 00:51:53,439 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-09-18 00:51:53,451 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.09 12:51:53" (1/1) ... [2020-09-18 00:51:53,471 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.09 12:51:53" (1/1) ... [2020-09-18 00:51:53,502 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-09-18 00:51:53,502 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-18 00:51:53,502 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-18 00:51:53,503 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-18 00:51:53,512 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.09 12:51:53" (1/1) ... [2020-09-18 00:51:53,513 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.09 12:51:53" (1/1) ... [2020-09-18 00:51:53,516 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.09 12:51:53" (1/1) ... [2020-09-18 00:51:53,517 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.09 12:51:53" (1/1) ... [2020-09-18 00:51:53,524 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.09 12:51:53" (1/1) ... [2020-09-18 00:51:53,527 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.09 12:51:53" (1/1) ... [2020-09-18 00:51:53,530 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.09 12:51:53" (1/1) ... [2020-09-18 00:51:53,533 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-18 00:51:53,534 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-18 00:51:53,534 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-18 00:51:53,534 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-18 00:51:53,536 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.09 12:51:53" (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 00:51:53,616 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-09-18 00:51:53,617 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2020-09-18 00:51:53,617 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-09-18 00:51:53,617 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-09-18 00:51:53,617 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2020-09-18 00:51:53,617 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2020-09-18 00:51:53,618 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2020-09-18 00:51:53,618 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2020-09-18 00:51:53,618 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2020-09-18 00:51:53,618 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2020-09-18 00:51:53,619 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2020-09-18 00:51:53,619 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-18 00:51:53,619 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-18 00:51:53,624 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 00:51:54,049 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-18 00:51:54,050 INFO L298 CfgBuilder]: Removed 8 assume(true) statements. [2020-09-18 00:51:54,056 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.09 12:51:54 BoogieIcfgContainer [2020-09-18 00:51:54,056 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-18 00:51:54,057 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-18 00:51:54,058 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-18 00:51:54,062 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-18 00:51:54,062 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.09 12:51:52" (1/3) ... [2020-09-18 00:51:54,063 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@63a9b95d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.09 12:51:54, skipping insertion in model container [2020-09-18 00:51:54,063 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.09 12:51:53" (2/3) ... [2020-09-18 00:51:54,064 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@63a9b95d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.09 12:51:54, skipping insertion in model container [2020-09-18 00:51:54,064 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.09 12:51:54" (3/3) ... [2020-09-18 00:51:54,066 INFO L109 eAbstractionObserver]: Analyzing ICFG safe014_pso.opt.i [2020-09-18 00:51:54,079 WARN L146 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2020-09-18 00:51:54,079 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-18 00:51:54,089 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-18 00:51:54,090 INFO L340 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2020-09-18 00:51:54,122 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-18 00:51:54,123 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-18 00:51:54,123 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-18 00:51:54,123 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-18 00:51:54,124 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-18 00:51:54,124 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-18 00:51:54,125 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-18 00:51:54,125 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-18 00:51:54,125 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-18 00:51:54,125 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-18 00:51:54,126 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-18 00:51:54,126 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-18 00:51:54,126 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-18 00:51:54,127 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-18 00:51:54,127 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-18 00:51:54,127 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-18 00:51:54,128 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-18 00:51:54,128 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-18 00:51:54,133 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-18 00:51:54,133 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-18 00:51:54,133 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-18 00:51:54,134 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-18 00:51:54,146 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-18 00:51:54,146 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-18 00:51:54,147 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-18 00:51:54,147 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-18 00:51:54,149 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-18 00:51:54,150 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-18 00:51:54,150 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-18 00:51:54,150 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-18 00:51:54,173 INFO L251 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2020-09-18 00:51:54,198 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-18 00:51:54,198 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-18 00:51:54,198 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-18 00:51:54,198 INFO L378 AbstractCegarLoop]: Backedges is MCR [2020-09-18 00:51:54,198 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-18 00:51:54,199 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-18 00:51:54,199 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-18 00:51:54,199 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-18 00:51:54,218 INFO L152 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 78 places, 70 transitions, 155 flow [2020-09-18 00:51:54,221 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 78 places, 70 transitions, 155 flow [2020-09-18 00:51:54,281 INFO L129 PetriNetUnfolder]: 2/67 cut-off events. [2020-09-18 00:51:54,281 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-09-18 00:51:54,287 INFO L80 FinitePrefix]: Finished finitePrefix Result has 77 conditions, 67 events. 2/67 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 46 event pairs, 0 based on Foata normal form. 0/64 useless extension candidates. Maximal degree in co-relation 55. Up to 2 conditions per place. [2020-09-18 00:51:54,291 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 78 places, 70 transitions, 155 flow [2020-09-18 00:51:54,320 INFO L129 PetriNetUnfolder]: 2/67 cut-off events. [2020-09-18 00:51:54,320 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-09-18 00:51:54,321 INFO L80 FinitePrefix]: Finished finitePrefix Result has 77 conditions, 67 events. 2/67 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 46 event pairs, 0 based on Foata normal form. 0/64 useless extension candidates. Maximal degree in co-relation 55. Up to 2 conditions per place. [2020-09-18 00:51:54,324 INFO L158 etLargeBlockEncoding]: Number of co-enabled transitions 1260 [2020-09-18 00:51:54,325 INFO L182 etLargeBlockEncoding]: Variable Check. [2020-09-18 00:51:55,773 WARN L193 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 49 [2020-09-18 00:51:55,946 WARN L193 SmtUtils]: Spent 124.00 ms on a formula simplification. DAG size of input: 49 DAG size of output: 44 [2020-09-18 00:51:55,993 INFO L206 etLargeBlockEncoding]: Checked pairs total: 2700 [2020-09-18 00:51:55,993 INFO L214 etLargeBlockEncoding]: Total number of compositions: 59 [2020-09-18 00:51:55,998 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 31 places, 22 transitions, 59 flow [2020-09-18 00:51:56,026 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 298 states. [2020-09-18 00:51:56,029 INFO L276 IsEmpty]: Start isEmpty. Operand 298 states. [2020-09-18 00:51:56,038 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-09-18 00:51:56,039 INFO L414 BasicCegarLoop]: Found error trace [2020-09-18 00:51:56,040 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-09-18 00:51:56,040 INFO L427 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-18 00:51:56,046 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-18 00:51:56,046 INFO L82 PathProgramCache]: Analyzing trace with hash -1011733384, now seen corresponding path program 1 times [2020-09-18 00:51:56,069 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-18 00:51:56,070 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1967535357] [2020-09-18 00:51:56,070 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-18 00:51:56,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-18 00:51:56,343 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 00:51:56,344 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1967535357] [2020-09-18 00:51:56,345 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-18 00:51:56,345 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-09-18 00:51:56,346 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1654269444] [2020-09-18 00:51:56,348 INFO L216 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-09-18 00:51:56,352 INFO L271 McrAutomatonBuilder]: Started intersection. [2020-09-18 00:51:56,370 INFO L274 McrAutomatonBuilder]: Finished intersection with 9 states and 8 transitions. [2020-09-18 00:51:56,370 INFO L299 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-09-18 00:51:56,372 INFO L409 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-09-18 00:51:56,373 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-18 00:51:56,373 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-18 00:51:56,392 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-18 00:51:56,393 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-18 00:51:56,396 INFO L87 Difference]: Start difference. First operand 298 states. Second operand 3 states. [2020-09-18 00:51:56,433 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-18 00:51:56,433 INFO L93 Difference]: Finished difference Result 282 states and 808 transitions. [2020-09-18 00:51:56,434 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-18 00:51:56,436 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 8 [2020-09-18 00:51:56,437 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-18 00:51:56,456 INFO L225 Difference]: With dead ends: 282 [2020-09-18 00:51:56,456 INFO L226 Difference]: Without dead ends: 218 [2020-09-18 00:51:56,458 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 00:51:56,486 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 218 states. [2020-09-18 00:51:56,526 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 218 to 218. [2020-09-18 00:51:56,528 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 218 states. [2020-09-18 00:51:56,533 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 218 states to 218 states and 600 transitions. [2020-09-18 00:51:56,535 INFO L78 Accepts]: Start accepts. Automaton has 218 states and 600 transitions. Word has length 8 [2020-09-18 00:51:56,536 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-18 00:51:56,536 INFO L479 AbstractCegarLoop]: Abstraction has 218 states and 600 transitions. [2020-09-18 00:51:56,536 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-18 00:51:56,536 INFO L276 IsEmpty]: Start isEmpty. Operand 218 states and 600 transitions. [2020-09-18 00:51:56,538 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-09-18 00:51:56,538 INFO L414 BasicCegarLoop]: Found error trace [2020-09-18 00:51:56,538 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-18 00:51:56,539 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-18 00:51:56,539 INFO L427 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-18 00:51:56,539 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-18 00:51:56,539 INFO L82 PathProgramCache]: Analyzing trace with hash -1035713695, now seen corresponding path program 1 times [2020-09-18 00:51:56,540 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-18 00:51:56,540 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1899452697] [2020-09-18 00:51:56,540 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-18 00:51:56,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-18 00:51:56,631 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 00:51:56,632 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1899452697] [2020-09-18 00:51:56,632 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-18 00:51:56,632 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-09-18 00:51:56,633 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1840964058] [2020-09-18 00:51:56,633 INFO L216 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-09-18 00:51:56,634 INFO L271 McrAutomatonBuilder]: Started intersection. [2020-09-18 00:51:56,636 INFO L274 McrAutomatonBuilder]: Finished intersection with 15 states and 19 transitions. [2020-09-18 00:51:56,636 INFO L299 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-09-18 00:51:56,695 INFO L409 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-09-18 00:51:56,697 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-18 00:51:56,697 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-18 00:51:56,698 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-18 00:51:56,698 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-18 00:51:56,698 INFO L87 Difference]: Start difference. First operand 218 states and 600 transitions. Second operand 4 states. [2020-09-18 00:51:56,727 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-18 00:51:56,727 INFO L93 Difference]: Finished difference Result 242 states and 634 transitions. [2020-09-18 00:51:56,728 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-09-18 00:51:56,728 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 9 [2020-09-18 00:51:56,728 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-18 00:51:56,730 INFO L225 Difference]: With dead ends: 242 [2020-09-18 00:51:56,730 INFO L226 Difference]: Without dead ends: 116 [2020-09-18 00:51:56,731 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 5 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 00:51:56,734 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 116 states. [2020-09-18 00:51:56,741 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 116 to 116. [2020-09-18 00:51:56,742 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 116 states. [2020-09-18 00:51:56,743 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 116 states to 116 states and 284 transitions. [2020-09-18 00:51:56,744 INFO L78 Accepts]: Start accepts. Automaton has 116 states and 284 transitions. Word has length 9 [2020-09-18 00:51:56,744 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-18 00:51:56,744 INFO L479 AbstractCegarLoop]: Abstraction has 116 states and 284 transitions. [2020-09-18 00:51:56,744 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-18 00:51:56,744 INFO L276 IsEmpty]: Start isEmpty. Operand 116 states and 284 transitions. [2020-09-18 00:51:56,745 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-09-18 00:51:56,746 INFO L414 BasicCegarLoop]: Found error trace [2020-09-18 00:51:56,746 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-18 00:51:56,746 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-18 00:51:56,746 INFO L427 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-18 00:51:56,747 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-18 00:51:56,747 INFO L82 PathProgramCache]: Analyzing trace with hash 1517475135, now seen corresponding path program 1 times [2020-09-18 00:51:56,747 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-18 00:51:56,748 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1745706669] [2020-09-18 00:51:56,748 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-18 00:51:56,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-18 00:51:56,826 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 00:51:56,827 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1745706669] [2020-09-18 00:51:56,827 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-18 00:51:56,827 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-09-18 00:51:56,827 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [977791635] [2020-09-18 00:51:56,828 INFO L216 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-09-18 00:51:56,829 INFO L271 McrAutomatonBuilder]: Started intersection. [2020-09-18 00:51:56,831 INFO L274 McrAutomatonBuilder]: Finished intersection with 15 states and 17 transitions. [2020-09-18 00:51:56,831 INFO L299 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-09-18 00:51:56,838 INFO L409 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-09-18 00:51:56,838 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-18 00:51:56,839 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-18 00:51:56,839 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-18 00:51:56,839 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-18 00:51:56,839 INFO L87 Difference]: Start difference. First operand 116 states and 284 transitions. Second operand 3 states. [2020-09-18 00:51:56,863 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-18 00:51:56,863 INFO L93 Difference]: Finished difference Result 110 states and 265 transitions. [2020-09-18 00:51:56,864 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-18 00:51:56,864 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 11 [2020-09-18 00:51:56,865 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-18 00:51:56,866 INFO L225 Difference]: With dead ends: 110 [2020-09-18 00:51:56,866 INFO L226 Difference]: Without dead ends: 110 [2020-09-18 00:51:56,867 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 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 00:51:56,869 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 110 states. [2020-09-18 00:51:56,881 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 110 to 110. [2020-09-18 00:51:56,881 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 110 states. [2020-09-18 00:51:56,882 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 110 states to 110 states and 265 transitions. [2020-09-18 00:51:56,883 INFO L78 Accepts]: Start accepts. Automaton has 110 states and 265 transitions. Word has length 11 [2020-09-18 00:51:56,883 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-18 00:51:56,883 INFO L479 AbstractCegarLoop]: Abstraction has 110 states and 265 transitions. [2020-09-18 00:51:56,883 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-18 00:51:56,883 INFO L276 IsEmpty]: Start isEmpty. Operand 110 states and 265 transitions. [2020-09-18 00:51:56,886 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-09-18 00:51:56,886 INFO L414 BasicCegarLoop]: Found error trace [2020-09-18 00:51:56,886 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-18 00:51:56,887 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-18 00:51:56,887 INFO L427 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-18 00:51:56,887 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-18 00:51:56,887 INFO L82 PathProgramCache]: Analyzing trace with hash -142823170, now seen corresponding path program 1 times [2020-09-18 00:51:56,888 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-18 00:51:56,890 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1618802326] [2020-09-18 00:51:56,890 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-18 00:51:56,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-18 00:51:56,999 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 00:51:57,000 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1618802326] [2020-09-18 00:51:57,000 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-18 00:51:57,000 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-09-18 00:51:57,000 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [297361448] [2020-09-18 00:51:57,001 INFO L216 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-09-18 00:51:57,002 INFO L271 McrAutomatonBuilder]: Started intersection. [2020-09-18 00:51:57,005 INFO L274 McrAutomatonBuilder]: Finished intersection with 19 states and 24 transitions. [2020-09-18 00:51:57,005 INFO L299 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-09-18 00:51:57,020 INFO L409 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-09-18 00:51:57,021 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-18 00:51:57,021 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-18 00:51:57,021 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-18 00:51:57,022 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-18 00:51:57,022 INFO L87 Difference]: Start difference. First operand 110 states and 265 transitions. Second operand 3 states. [2020-09-18 00:51:57,039 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-18 00:51:57,039 INFO L93 Difference]: Finished difference Result 104 states and 246 transitions. [2020-09-18 00:51:57,040 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-18 00:51:57,040 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 12 [2020-09-18 00:51:57,040 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-18 00:51:57,041 INFO L225 Difference]: With dead ends: 104 [2020-09-18 00:51:57,042 INFO L226 Difference]: Without dead ends: 104 [2020-09-18 00:51:57,042 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 00:51:57,044 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 104 states. [2020-09-18 00:51:57,049 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 104 to 104. [2020-09-18 00:51:57,049 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 104 states. [2020-09-18 00:51:57,050 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 104 states to 104 states and 246 transitions. [2020-09-18 00:51:57,050 INFO L78 Accepts]: Start accepts. Automaton has 104 states and 246 transitions. Word has length 12 [2020-09-18 00:51:57,051 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-18 00:51:57,051 INFO L479 AbstractCegarLoop]: Abstraction has 104 states and 246 transitions. [2020-09-18 00:51:57,051 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-18 00:51:57,051 INFO L276 IsEmpty]: Start isEmpty. Operand 104 states and 246 transitions. [2020-09-18 00:51:57,052 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-09-18 00:51:57,052 INFO L414 BasicCegarLoop]: Found error trace [2020-09-18 00:51:57,052 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-18 00:51:57,053 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-18 00:51:57,053 INFO L427 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-18 00:51:57,053 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-18 00:51:57,053 INFO L82 PathProgramCache]: Analyzing trace with hash -132602240, now seen corresponding path program 1 times [2020-09-18 00:51:57,054 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-18 00:51:57,054 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [325597075] [2020-09-18 00:51:57,054 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-18 00:51:57,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-18 00:51:57,117 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 00:51:57,118 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [325597075] [2020-09-18 00:51:57,118 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-18 00:51:57,118 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-18 00:51:57,119 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1502646754] [2020-09-18 00:51:57,119 INFO L216 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-09-18 00:51:57,120 INFO L271 McrAutomatonBuilder]: Started intersection. [2020-09-18 00:51:57,124 INFO L274 McrAutomatonBuilder]: Finished intersection with 25 states and 37 transitions. [2020-09-18 00:51:57,124 INFO L299 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-09-18 00:51:57,162 INFO L409 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-09-18 00:51:57,162 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-18 00:51:57,163 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-18 00:51:57,163 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-18 00:51:57,163 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-18 00:51:57,163 INFO L87 Difference]: Start difference. First operand 104 states and 246 transitions. Second operand 4 states. [2020-09-18 00:51:57,193 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-18 00:51:57,193 INFO L93 Difference]: Finished difference Result 158 states and 375 transitions. [2020-09-18 00:51:57,193 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-18 00:51:57,194 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 13 [2020-09-18 00:51:57,194 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-18 00:51:57,195 INFO L225 Difference]: With dead ends: 158 [2020-09-18 00:51:57,195 INFO L226 Difference]: Without dead ends: 104 [2020-09-18 00:51:57,195 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 13 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 00:51:57,196 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 104 states. [2020-09-18 00:51:57,201 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 104 to 104. [2020-09-18 00:51:57,201 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 104 states. [2020-09-18 00:51:57,202 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 104 states to 104 states and 244 transitions. [2020-09-18 00:51:57,202 INFO L78 Accepts]: Start accepts. Automaton has 104 states and 244 transitions. Word has length 13 [2020-09-18 00:51:57,202 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-18 00:51:57,203 INFO L479 AbstractCegarLoop]: Abstraction has 104 states and 244 transitions. [2020-09-18 00:51:57,203 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-18 00:51:57,203 INFO L276 IsEmpty]: Start isEmpty. Operand 104 states and 244 transitions. [2020-09-18 00:51:57,204 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-09-18 00:51:57,204 INFO L414 BasicCegarLoop]: Found error trace [2020-09-18 00:51:57,204 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-18 00:51:57,204 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-18 00:51:57,205 INFO L427 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-18 00:51:57,205 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-18 00:51:57,205 INFO L82 PathProgramCache]: Analyzing trace with hash -1246852910, now seen corresponding path program 2 times [2020-09-18 00:51:57,205 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-18 00:51:57,206 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1922505318] [2020-09-18 00:51:57,206 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-18 00:51:57,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-18 00:51:57,296 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 00:51:57,297 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1922505318] [2020-09-18 00:51:57,297 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-18 00:51:57,297 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-09-18 00:51:57,297 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1849652495] [2020-09-18 00:51:57,298 INFO L216 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-09-18 00:51:57,299 INFO L271 McrAutomatonBuilder]: Started intersection. [2020-09-18 00:51:57,302 INFO L274 McrAutomatonBuilder]: Finished intersection with 23 states and 31 transitions. [2020-09-18 00:51:57,302 INFO L299 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-09-18 00:51:57,348 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 4 conjuncts [2020-09-18 00:51:57,366 INFO L409 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-09-18 00:51:57,367 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-18 00:51:57,367 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-18 00:51:57,367 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-18 00:51:57,368 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-18 00:51:57,368 INFO L87 Difference]: Start difference. First operand 104 states and 244 transitions. Second operand 4 states. [2020-09-18 00:51:57,400 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-18 00:51:57,401 INFO L93 Difference]: Finished difference Result 127 states and 275 transitions. [2020-09-18 00:51:57,401 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-18 00:51:57,401 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 13 [2020-09-18 00:51:57,402 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-18 00:51:57,403 INFO L225 Difference]: With dead ends: 127 [2020-09-18 00:51:57,403 INFO L226 Difference]: Without dead ends: 87 [2020-09-18 00:51:57,403 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 8 SyntacticMatches, 1 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 00:51:57,404 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 87 states. [2020-09-18 00:51:57,407 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 87 to 87. [2020-09-18 00:51:57,407 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 87 states. [2020-09-18 00:51:57,408 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 87 states to 87 states and 183 transitions. [2020-09-18 00:51:57,408 INFO L78 Accepts]: Start accepts. Automaton has 87 states and 183 transitions. Word has length 13 [2020-09-18 00:51:57,408 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-18 00:51:57,409 INFO L479 AbstractCegarLoop]: Abstraction has 87 states and 183 transitions. [2020-09-18 00:51:57,409 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-18 00:51:57,409 INFO L276 IsEmpty]: Start isEmpty. Operand 87 states and 183 transitions. [2020-09-18 00:51:57,410 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-09-18 00:51:57,410 INFO L414 BasicCegarLoop]: Found error trace [2020-09-18 00:51:57,410 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-18 00:51:57,410 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-09-18 00:51:57,411 INFO L427 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-18 00:51:57,411 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-18 00:51:57,411 INFO L82 PathProgramCache]: Analyzing trace with hash 433937672, now seen corresponding path program 1 times [2020-09-18 00:51:57,411 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-18 00:51:57,412 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [612345299] [2020-09-18 00:51:57,412 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-18 00:51:57,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-18 00:51:57,486 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 00:51:57,486 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [612345299] [2020-09-18 00:51:57,487 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-18 00:51:57,487 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-18 00:51:57,487 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1063038513] [2020-09-18 00:51:57,487 INFO L216 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-09-18 00:51:57,489 INFO L271 McrAutomatonBuilder]: Started intersection. [2020-09-18 00:51:57,493 INFO L274 McrAutomatonBuilder]: Finished intersection with 27 states and 38 transitions. [2020-09-18 00:51:57,493 INFO L299 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-09-18 00:51:57,545 INFO L409 McrAutomatonBuilder]: Construction finished. MCR generated 1 new interpolants: [3211#(<= ~__unbuffered_cnt~0 0)] [2020-09-18 00:51:57,545 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-18 00:51:57,546 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-18 00:51:57,546 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-18 00:51:57,546 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-09-18 00:51:57,546 INFO L87 Difference]: Start difference. First operand 87 states and 183 transitions. Second operand 6 states. [2020-09-18 00:51:57,596 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-18 00:51:57,596 INFO L93 Difference]: Finished difference Result 90 states and 175 transitions. [2020-09-18 00:51:57,596 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-18 00:51:57,597 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 14 [2020-09-18 00:51:57,597 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-18 00:51:57,597 INFO L225 Difference]: With dead ends: 90 [2020-09-18 00:51:57,598 INFO L226 Difference]: Without dead ends: 65 [2020-09-18 00:51:57,598 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 9 SyntacticMatches, 2 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2020-09-18 00:51:57,599 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 65 states. [2020-09-18 00:51:57,601 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 65 to 65. [2020-09-18 00:51:57,601 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 65 states. [2020-09-18 00:51:57,601 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65 states to 65 states and 119 transitions. [2020-09-18 00:51:57,602 INFO L78 Accepts]: Start accepts. Automaton has 65 states and 119 transitions. Word has length 14 [2020-09-18 00:51:57,602 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-18 00:51:57,602 INFO L479 AbstractCegarLoop]: Abstraction has 65 states and 119 transitions. [2020-09-18 00:51:57,602 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-09-18 00:51:57,602 INFO L276 IsEmpty]: Start isEmpty. Operand 65 states and 119 transitions. [2020-09-18 00:51:57,603 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-09-18 00:51:57,603 INFO L414 BasicCegarLoop]: Found error trace [2020-09-18 00:51:57,603 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-18 00:51:57,604 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-09-18 00:51:57,604 INFO L427 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-18 00:51:57,604 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-18 00:51:57,604 INFO L82 PathProgramCache]: Analyzing trace with hash 567169455, now seen corresponding path program 1 times [2020-09-18 00:51:57,605 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-18 00:51:57,605 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [755243491] [2020-09-18 00:51:57,605 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-18 00:51:57,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-18 00:51:57,682 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 00:51:57,682 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [755243491] [2020-09-18 00:51:57,683 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-18 00:51:57,683 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-18 00:51:57,683 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1475298834] [2020-09-18 00:51:57,683 INFO L216 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-09-18 00:51:57,684 INFO L271 McrAutomatonBuilder]: Started intersection. [2020-09-18 00:51:57,689 INFO L274 McrAutomatonBuilder]: Finished intersection with 27 states and 37 transitions. [2020-09-18 00:51:57,690 INFO L299 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-09-18 00:51:57,750 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 4 conjuncts [2020-09-18 00:51:57,786 INFO L409 McrAutomatonBuilder]: Construction finished. MCR generated 1 new interpolants: [3440#(<= ~__unbuffered_cnt~0 0)] [2020-09-18 00:51:57,787 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-18 00:51:57,787 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-18 00:51:57,787 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-18 00:51:57,788 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-09-18 00:51:57,788 INFO L87 Difference]: Start difference. First operand 65 states and 119 transitions. Second operand 7 states. [2020-09-18 00:51:57,847 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-18 00:51:57,847 INFO L93 Difference]: Finished difference Result 62 states and 111 transitions. [2020-09-18 00:51:57,847 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-09-18 00:51:57,848 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 15 [2020-09-18 00:51:57,848 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-18 00:51:57,848 INFO L225 Difference]: With dead ends: 62 [2020-09-18 00:51:57,849 INFO L226 Difference]: Without dead ends: 54 [2020-09-18 00:51:57,851 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 7 SyntacticMatches, 3 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2020-09-18 00:51:57,851 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54 states. [2020-09-18 00:51:57,854 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54 to 54. [2020-09-18 00:51:57,854 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 54 states. [2020-09-18 00:51:57,854 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 97 transitions. [2020-09-18 00:51:57,855 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 97 transitions. Word has length 15 [2020-09-18 00:51:57,855 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-18 00:51:57,855 INFO L479 AbstractCegarLoop]: Abstraction has 54 states and 97 transitions. [2020-09-18 00:51:57,855 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-18 00:51:57,855 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 97 transitions. [2020-09-18 00:51:57,857 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-09-18 00:51:57,857 INFO L414 BasicCegarLoop]: Found error trace [2020-09-18 00:51:57,858 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-18 00:51:57,858 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-09-18 00:51:57,858 INFO L427 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-18 00:51:57,858 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-18 00:51:57,859 INFO L82 PathProgramCache]: Analyzing trace with hash -412776350, now seen corresponding path program 1 times [2020-09-18 00:51:57,859 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-18 00:51:57,859 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1849103487] [2020-09-18 00:51:57,859 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-18 00:51:57,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-18 00:51:57,938 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 00:51:57,939 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1849103487] [2020-09-18 00:51:57,939 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-18 00:51:57,939 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-18 00:51:57,939 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1595562038] [2020-09-18 00:51:57,939 INFO L216 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-09-18 00:51:57,942 INFO L271 McrAutomatonBuilder]: Started intersection. [2020-09-18 00:51:57,947 INFO L274 McrAutomatonBuilder]: Finished intersection with 30 states and 41 transitions. [2020-09-18 00:51:57,947 INFO L299 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-09-18 00:51:57,976 INFO L409 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-09-18 00:51:57,977 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-18 00:51:57,977 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-18 00:51:57,977 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-18 00:51:57,977 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-18 00:51:57,978 INFO L87 Difference]: Start difference. First operand 54 states and 97 transitions. Second operand 4 states. [2020-09-18 00:51:57,995 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-18 00:51:57,996 INFO L93 Difference]: Finished difference Result 63 states and 110 transitions. [2020-09-18 00:51:57,996 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-09-18 00:51:57,996 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 17 [2020-09-18 00:51:57,997 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-18 00:51:57,997 INFO L225 Difference]: With dead ends: 63 [2020-09-18 00:51:57,997 INFO L226 Difference]: Without dead ends: 35 [2020-09-18 00:51:57,997 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 13 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 00:51:57,998 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2020-09-18 00:51:57,999 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 35. [2020-09-18 00:51:57,999 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2020-09-18 00:51:57,999 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 56 transitions. [2020-09-18 00:51:58,000 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 56 transitions. Word has length 17 [2020-09-18 00:51:58,000 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-18 00:51:58,000 INFO L479 AbstractCegarLoop]: Abstraction has 35 states and 56 transitions. [2020-09-18 00:51:58,000 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-18 00:51:58,000 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 56 transitions. [2020-09-18 00:51:58,001 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-09-18 00:51:58,001 INFO L414 BasicCegarLoop]: Found error trace [2020-09-18 00:51:58,001 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-18 00:51:58,001 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-09-18 00:51:58,001 INFO L427 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-18 00:51:58,001 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-18 00:51:58,002 INFO L82 PathProgramCache]: Analyzing trace with hash 361560856, now seen corresponding path program 2 times [2020-09-18 00:51:58,002 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-18 00:51:58,002 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1637768300] [2020-09-18 00:51:58,002 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-18 00:51:58,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-18 00:51:58,050 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 00:51:58,051 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1637768300] [2020-09-18 00:51:58,051 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-18 00:51:58,051 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-18 00:51:58,052 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1298750782] [2020-09-18 00:51:58,052 INFO L216 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-09-18 00:51:58,054 INFO L271 McrAutomatonBuilder]: Started intersection. [2020-09-18 00:51:58,058 INFO L274 McrAutomatonBuilder]: Finished intersection with 26 states and 34 transitions. [2020-09-18 00:51:58,058 INFO L299 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-09-18 00:51:58,074 INFO L409 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-09-18 00:51:58,074 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-18 00:51:58,074 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-18 00:51:58,075 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-18 00:51:58,075 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-18 00:51:58,075 INFO L87 Difference]: Start difference. First operand 35 states and 56 transitions. Second operand 4 states. [2020-09-18 00:51:58,092 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-18 00:51:58,092 INFO L93 Difference]: Finished difference Result 48 states and 77 transitions. [2020-09-18 00:51:58,093 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-18 00:51:58,093 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 17 [2020-09-18 00:51:58,093 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-18 00:51:58,093 INFO L225 Difference]: With dead ends: 48 [2020-09-18 00:51:58,094 INFO L226 Difference]: Without dead ends: 30 [2020-09-18 00:51:58,094 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 10 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 00:51:58,094 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2020-09-18 00:51:58,095 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 30. [2020-09-18 00:51:58,095 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2020-09-18 00:51:58,096 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 44 transitions. [2020-09-18 00:51:58,096 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 44 transitions. Word has length 17 [2020-09-18 00:51:58,096 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-18 00:51:58,096 INFO L479 AbstractCegarLoop]: Abstraction has 30 states and 44 transitions. [2020-09-18 00:51:58,096 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-18 00:51:58,097 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 44 transitions. [2020-09-18 00:51:58,097 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-09-18 00:51:58,097 INFO L414 BasicCegarLoop]: Found error trace [2020-09-18 00:51:58,097 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-18 00:51:58,097 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-09-18 00:51:58,098 INFO L427 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-18 00:51:58,098 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-18 00:51:58,098 INFO L82 PathProgramCache]: Analyzing trace with hash -550831814, now seen corresponding path program 3 times [2020-09-18 00:51:58,098 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-18 00:51:58,099 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [524426442] [2020-09-18 00:51:58,099 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-18 00:51:58,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-18 00:51:58,158 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 00:51:58,158 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [524426442] [2020-09-18 00:51:58,158 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-18 00:51:58,159 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-09-18 00:51:58,159 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1523198450] [2020-09-18 00:51:58,159 INFO L216 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-09-18 00:51:58,161 INFO L271 McrAutomatonBuilder]: Started intersection. [2020-09-18 00:51:58,165 INFO L274 McrAutomatonBuilder]: Finished intersection with 24 states and 29 transitions. [2020-09-18 00:51:58,166 INFO L299 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-09-18 00:51:58,197 INFO L409 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-09-18 00:51:58,198 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-18 00:51:58,198 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-18 00:51:58,198 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-18 00:51:58,199 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-18 00:51:58,199 INFO L87 Difference]: Start difference. First operand 30 states and 44 transitions. Second operand 4 states. [2020-09-18 00:51:58,213 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-18 00:51:58,213 INFO L93 Difference]: Finished difference Result 29 states and 43 transitions. [2020-09-18 00:51:58,214 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-09-18 00:51:58,214 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 17 [2020-09-18 00:51:58,214 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-18 00:51:58,214 INFO L225 Difference]: With dead ends: 29 [2020-09-18 00:51:58,214 INFO L226 Difference]: Without dead ends: 0 [2020-09-18 00:51:58,215 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 6 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 00:51:58,215 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-09-18 00:51:58,215 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-09-18 00:51:58,215 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-09-18 00:51:58,216 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-09-18 00:51:58,216 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 17 [2020-09-18 00:51:58,216 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-18 00:51:58,216 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-09-18 00:51:58,216 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-18 00:51:58,216 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-09-18 00:51:58,216 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-09-18 00:51:58,217 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-09-18 00:51:58,221 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 18.09 12:51:58 BasicIcfg [2020-09-18 00:51:58,222 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-09-18 00:51:58,224 INFO L168 Benchmark]: Toolchain (without parser) took 5568.40 ms. Allocated memory was 139.5 MB in the beginning and 289.4 MB in the end (delta: 149.9 MB). Free memory was 101.1 MB in the beginning and 253.4 MB in the end (delta: -152.3 MB). There was no memory consumed. Max. memory is 7.1 GB. [2020-09-18 00:51:58,225 INFO L168 Benchmark]: CDTParser took 0.21 ms. Allocated memory is still 139.5 MB. Free memory was 121.0 MB in the beginning and 120.8 MB in the end (delta: 209.8 kB). Peak memory consumption was 209.8 kB. Max. memory is 7.1 GB. [2020-09-18 00:51:58,226 INFO L168 Benchmark]: CACSL2BoogieTranslator took 774.10 ms. Allocated memory was 139.5 MB in the beginning and 202.9 MB in the end (delta: 63.4 MB). Free memory was 100.4 MB in the beginning and 160.4 MB in the end (delta: -60.0 MB). Peak memory consumption was 26.6 MB. Max. memory is 7.1 GB. [2020-09-18 00:51:58,226 INFO L168 Benchmark]: Boogie Procedure Inliner took 63.21 ms. Allocated memory is still 202.9 MB. Free memory was 160.4 MB in the beginning and 158.4 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 7.1 GB. [2020-09-18 00:51:58,227 INFO L168 Benchmark]: Boogie Preprocessor took 31.41 ms. Allocated memory is still 202.9 MB. Free memory was 158.4 MB in the beginning and 157.0 MB in the end (delta: 1.3 MB). Peak memory consumption was 1.3 MB. Max. memory is 7.1 GB. [2020-09-18 00:51:58,228 INFO L168 Benchmark]: RCFGBuilder took 522.12 ms. Allocated memory is still 202.9 MB. Free memory was 157.0 MB in the beginning and 134.9 MB in the end (delta: 22.2 MB). Peak memory consumption was 22.2 MB. Max. memory is 7.1 GB. [2020-09-18 00:51:58,229 INFO L168 Benchmark]: TraceAbstraction took 4164.38 ms. Allocated memory was 202.9 MB in the beginning and 289.4 MB in the end (delta: 86.5 MB). Free memory was 134.2 MB in the beginning and 253.4 MB in the end (delta: -119.2 MB). There was no memory consumed. Max. memory is 7.1 GB. [2020-09-18 00:51:58,233 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.21 ms. Allocated memory is still 139.5 MB. Free memory was 121.0 MB in the beginning and 120.8 MB in the end (delta: 209.8 kB). Peak memory consumption was 209.8 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 774.10 ms. Allocated memory was 139.5 MB in the beginning and 202.9 MB in the end (delta: 63.4 MB). Free memory was 100.4 MB in the beginning and 160.4 MB in the end (delta: -60.0 MB). Peak memory consumption was 26.6 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 63.21 ms. Allocated memory is still 202.9 MB. Free memory was 160.4 MB in the beginning and 158.4 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 31.41 ms. Allocated memory is still 202.9 MB. Free memory was 158.4 MB in the beginning and 157.0 MB in the end (delta: 1.3 MB). Peak memory consumption was 1.3 MB. Max. memory is 7.1 GB. * RCFGBuilder took 522.12 ms. Allocated memory is still 202.9 MB. Free memory was 157.0 MB in the beginning and 134.9 MB in the end (delta: 22.2 MB). Peak memory consumption was 22.2 MB. Max. memory is 7.1 GB. * TraceAbstraction took 4164.38 ms. Allocated memory was 202.9 MB in the beginning and 289.4 MB in the end (delta: 86.5 MB). Free memory was 134.2 MB in the beginning and 253.4 MB in the end (delta: -119.2 MB). There was no memory consumed. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks LbeTime: 1.7s, 78 ProgramPointsBefore, 31 ProgramPointsAfterwards, 70 TransitionsBefore, 22 TransitionsAfterwards, 1260 CoEnabledTransitionPairs, 7 FixpointIterations, 14 TrivialSequentialCompositions, 37 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 8 ConcurrentYvCompositions, 1 ChoiceCompositions, 657 VarBasedMoverChecksPositive, 26 VarBasedMoverChecksNegative, 0 SemBasedMoverChecksPositive, 0 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.0s, 0 MoverChecksTotal, 2700 CheckedPairsTotal, 59 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, 69 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 4.0s, OverallIterations: 11, TraceHistogramMax: 1, AutomataDifference: 0.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 1.8s, HoareTripleCheckerStatistics: 214 SDtfs, 132 SDslu, 261 SDs, 0 SdLazy, 142 SolverSat, 23 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 119 GetRequests, 81 SyntacticMatches, 6 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=298occurred 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, 11 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 0.5s InterpolantComputationTime, 146 NumberOfCodeBlocks, 146 NumberOfCodeBlocksAsserted, 11 NumberOfCheckSat, 135 ConstructedInterpolants, 0 QuantifiedInterpolants, 4725 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 11 InterpolantComputations, 11 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...