/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/safe016_pso.opt.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-1d1d2b5 [2020-10-22 00:36:25,156 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-22 00:36:25,160 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-22 00:36:25,201 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-22 00:36:25,202 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-22 00:36:25,210 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-22 00:36:25,213 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-22 00:36:25,217 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-22 00:36:25,219 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-22 00:36:25,223 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-22 00:36:25,224 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-22 00:36:25,225 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-22 00:36:25,225 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-22 00:36:25,228 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-22 00:36:25,230 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-22 00:36:25,232 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-22 00:36:25,234 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-22 00:36:25,235 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-22 00:36:25,236 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-22 00:36:25,246 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-22 00:36:25,248 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-22 00:36:25,249 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-22 00:36:25,250 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-22 00:36:25,251 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-22 00:36:25,267 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-10-22 00:36:25,273 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-22 00:36:25,274 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-22 00:36:25,275 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-22 00:36:25,276 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-22 00:36:25,277 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-22 00:36:25,277 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-22 00:36:25,281 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-22 00:36:25,281 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-22 00:36:25,281 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-22 00:36:25,282 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-22 00:36:25,283 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-22 00:36:25,286 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 [2020-10-22 00:36:25,314 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-22 00:36:25,314 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-22 00:36:25,315 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-22 00:36:25,316 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-22 00:36:25,316 INFO L138 SettingsManager]: * Use SBE=true [2020-10-22 00:36:25,316 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-22 00:36:25,316 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-22 00:36:25,317 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-22 00:36:25,317 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-22 00:36:25,317 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-22 00:36:25,317 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-22 00:36:25,317 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-22 00:36:25,318 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-22 00:36:25,318 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-22 00:36:25,318 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-22 00:36:25,318 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-22 00:36:25,318 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-22 00:36:25,319 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-22 00:36:25,319 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-22 00:36:25,319 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-22 00:36:25,319 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-22 00:36:25,319 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-22 00:36:25,320 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-22 00:36:25,320 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=Craig_NestedInterpolation [2020-10-22 00:36:25,320 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-22 00:36:25,320 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-22 00:36:25,320 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-22 00:36:25,320 INFO L138 SettingsManager]: * Override the interpolant automaton setting of the refinement strategy=true [2020-10-22 00:36:25,321 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=VARIABLE_BASED_MOVER_CHECK [2020-10-22 00:36:25,321 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-22 00:36:25,321 INFO L138 SettingsManager]: * Interpolant automaton=MCR [2020-10-22 00:36:25,644 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-22 00:36:25,663 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-22 00:36:25,668 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-22 00:36:25,669 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-22 00:36:25,670 INFO L275 PluginConnector]: CDTParser initialized [2020-10-22 00:36:25,671 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe016_pso.opt.i [2020-10-22 00:36:25,729 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1f053af15/871b5a83070042a5bf9a600a4cd341a1/FLAGadebebdce [2020-10-22 00:36:26,292 INFO L306 CDTParser]: Found 1 translation units. [2020-10-22 00:36:26,294 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe016_pso.opt.i [2020-10-22 00:36:26,318 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1f053af15/871b5a83070042a5bf9a600a4cd341a1/FLAGadebebdce [2020-10-22 00:36:26,536 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1f053af15/871b5a83070042a5bf9a600a4cd341a1 [2020-10-22 00:36:26,545 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-22 00:36:26,552 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2020-10-22 00:36:26,553 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-22 00:36:26,553 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-22 00:36:26,557 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-22 00:36:26,558 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.10 12:36:26" (1/1) ... [2020-10-22 00:36:26,561 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1cbbe77f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 12:36:26, skipping insertion in model container [2020-10-22 00:36:26,561 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.10 12:36:26" (1/1) ... [2020-10-22 00:36:26,569 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-22 00:36:26,631 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-22 00:36:27,215 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-22 00:36:27,229 INFO L203 MainTranslator]: Completed pre-run [2020-10-22 00:36:27,318 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-22 00:36:27,405 INFO L208 MainTranslator]: Completed translation [2020-10-22 00:36:27,407 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 12:36:27 WrapperNode [2020-10-22 00:36:27,407 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-22 00:36:27,408 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-10-22 00:36:27,408 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-10-22 00:36:27,408 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-10-22 00:36:27,420 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 12:36:27" (1/1) ... [2020-10-22 00:36:27,439 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 12:36:27" (1/1) ... [2020-10-22 00:36:27,463 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-10-22 00:36:27,463 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-22 00:36:27,463 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-22 00:36:27,464 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-22 00:36:27,471 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 12:36:27" (1/1) ... [2020-10-22 00:36:27,472 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 12:36:27" (1/1) ... [2020-10-22 00:36:27,475 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 12:36:27" (1/1) ... [2020-10-22 00:36:27,476 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 12:36:27" (1/1) ... [2020-10-22 00:36:27,483 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 12:36:27" (1/1) ... [2020-10-22 00:36:27,486 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 12:36:27" (1/1) ... [2020-10-22 00:36:27,489 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 12:36:27" (1/1) ... [2020-10-22 00:36:27,493 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-22 00:36:27,493 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-22 00:36:27,494 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-22 00:36:27,494 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-22 00:36:27,495 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 12:36:27" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-22 00:36:27,569 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-22 00:36:27,570 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2020-10-22 00:36:27,570 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-22 00:36:27,570 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-22 00:36:27,570 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2020-10-22 00:36:27,570 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2020-10-22 00:36:27,571 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2020-10-22 00:36:27,571 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2020-10-22 00:36:27,571 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2020-10-22 00:36:27,571 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2020-10-22 00:36:27,571 INFO L130 BoogieDeclarations]: Found specification of procedure P3 [2020-10-22 00:36:27,572 INFO L138 BoogieDeclarations]: Found implementation of procedure P3 [2020-10-22 00:36:27,572 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-22 00:36:27,572 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2020-10-22 00:36:27,572 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-22 00:36:27,572 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-22 00:36:27,575 WARN L208 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2020-10-22 00:36:27,996 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-22 00:36:27,997 INFO L298 CfgBuilder]: Removed 10 assume(true) statements. [2020-10-22 00:36:27,999 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.10 12:36:27 BoogieIcfgContainer [2020-10-22 00:36:28,000 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-22 00:36:28,001 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-22 00:36:28,001 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-22 00:36:28,005 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-22 00:36:28,006 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.10 12:36:26" (1/3) ... [2020-10-22 00:36:28,006 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@33e31c21 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.10 12:36:28, skipping insertion in model container [2020-10-22 00:36:28,007 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 12:36:27" (2/3) ... [2020-10-22 00:36:28,007 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@33e31c21 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.10 12:36:28, skipping insertion in model container [2020-10-22 00:36:28,007 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.10 12:36:27" (3/3) ... [2020-10-22 00:36:28,009 INFO L111 eAbstractionObserver]: Analyzing ICFG safe016_pso.opt.i [2020-10-22 00:36:28,022 WARN L153 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2020-10-22 00:36:28,023 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-22 00:36:28,032 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-22 00:36:28,033 INFO L348 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2020-10-22 00:36:28,068 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 00:36:28,069 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 00:36:28,069 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 00:36:28,069 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 00:36:28,070 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 00:36:28,070 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 00:36:28,071 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork3_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 00:36:28,071 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork3_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 00:36:28,071 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork3_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 00:36:28,071 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork3_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 00:36:28,072 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork3_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 00:36:28,072 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork3_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 00:36:28,072 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 00:36:28,073 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 00:36:28,073 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 00:36:28,073 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 00:36:28,073 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 00:36:28,074 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 00:36:28,074 WARN L313 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 00:36:28,074 WARN L313 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 00:36:28,075 WARN L313 ript$VariableManager]: TermVariabe P3Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 00:36:28,075 WARN L313 ript$VariableManager]: TermVariabe P3Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 00:36:28,075 WARN L313 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 00:36:28,075 WARN L313 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 00:36:28,080 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 00:36:28,080 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 00:36:28,080 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 00:36:28,080 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 00:36:28,087 WARN L313 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 00:36:28,087 WARN L313 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 00:36:28,087 WARN L313 ript$VariableManager]: TermVariabe P3Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 00:36:28,088 WARN L313 ript$VariableManager]: TermVariabe P3Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 00:36:28,099 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 00:36:28,099 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 00:36:28,099 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 00:36:28,100 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 00:36:28,106 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork3_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 00:36:28,106 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork3_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 00:36:28,106 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork3_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 00:36:28,106 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork3_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 00:36:28,115 INFO L149 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2020-10-22 00:36:28,126 INFO L253 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2020-10-22 00:36:28,147 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-22 00:36:28,148 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-22 00:36:28,148 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-22 00:36:28,148 INFO L380 AbstractCegarLoop]: Backedges is MCR [2020-10-22 00:36:28,148 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-22 00:36:28,148 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-22 00:36:28,149 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-22 00:36:28,149 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-22 00:36:28,164 INFO L137 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2020-10-22 00:36:28,165 INFO L144 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 99 places, 89 transitions, 198 flow [2020-10-22 00:36:28,168 INFO L110 LiptonReduction]: Starting Lipton reduction on Petri net that has 99 places, 89 transitions, 198 flow [2020-10-22 00:36:28,170 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 99 places, 89 transitions, 198 flow [2020-10-22 00:36:28,223 INFO L129 PetriNetUnfolder]: 3/85 cut-off events. [2020-10-22 00:36:28,223 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-10-22 00:36:28,230 INFO L80 FinitePrefix]: Finished finitePrefix Result has 98 conditions, 85 events. 3/85 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 72 event pairs, 0 based on Foata normal form. 0/81 useless extension candidates. Maximal degree in co-relation 72. Up to 2 conditions per place. [2020-10-22 00:36:28,234 INFO L116 LiptonReduction]: Number of co-enabled transitions 2042 [2020-10-22 00:36:29,461 WARN L193 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 48 DAG size of output: 44 [2020-10-22 00:36:30,125 WARN L193 SmtUtils]: Spent 194.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 74 [2020-10-22 00:36:30,369 INFO L131 LiptonReduction]: Checked pairs total: 4334 [2020-10-22 00:36:30,370 INFO L133 LiptonReduction]: Total number of compositions: 82 [2020-10-22 00:36:30,376 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 38 places, 26 transitions, 72 flow [2020-10-22 00:36:30,423 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 706 states. [2020-10-22 00:36:30,426 INFO L276 IsEmpty]: Start isEmpty. Operand 706 states. [2020-10-22 00:36:30,455 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-10-22 00:36:30,455 INFO L414 BasicCegarLoop]: Found error trace [2020-10-22 00:36:30,457 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-22 00:36:30,457 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-22 00:36:30,463 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-22 00:36:30,463 INFO L82 PathProgramCache]: Analyzing trace with hash -782796091, now seen corresponding path program 1 times [2020-10-22 00:36:30,486 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-22 00:36:30,487 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1576595807] [2020-10-22 00:36:30,487 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-22 00:36:30,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-22 00:36:30,725 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-22 00:36:30,726 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1576595807] [2020-10-22 00:36:30,727 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-22 00:36:30,728 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-10-22 00:36:30,728 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1616846051] [2020-10-22 00:36:30,729 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-22 00:36:30,733 INFO L249 McrAutomatonBuilder]: Started intersection. [2020-10-22 00:36:30,750 INFO L252 McrAutomatonBuilder]: Finished intersection with 11 states and 10 transitions. [2020-10-22 00:36:30,751 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-22 00:36:30,756 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-22 00:36:30,757 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-22 00:36:30,757 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-22 00:36:30,773 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-22 00:36:30,774 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-22 00:36:30,776 INFO L87 Difference]: Start difference. First operand 706 states. Second operand 3 states. [2020-10-22 00:36:30,833 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-22 00:36:30,833 INFO L93 Difference]: Finished difference Result 682 states and 2336 transitions. [2020-10-22 00:36:30,834 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-22 00:36:30,835 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 10 [2020-10-22 00:36:30,836 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-22 00:36:30,858 INFO L225 Difference]: With dead ends: 682 [2020-10-22 00:36:30,859 INFO L226 Difference]: Without dead ends: 538 [2020-10-22 00:36:30,860 INFO L677 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 [2020-10-22 00:36:30,890 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 538 states. [2020-10-22 00:36:30,969 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 538 to 538. [2020-10-22 00:36:30,971 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 538 states. [2020-10-22 00:36:30,979 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 538 states to 538 states and 1784 transitions. [2020-10-22 00:36:30,981 INFO L78 Accepts]: Start accepts. Automaton has 538 states and 1784 transitions. Word has length 10 [2020-10-22 00:36:30,982 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-22 00:36:30,982 INFO L481 AbstractCegarLoop]: Abstraction has 538 states and 1784 transitions. [2020-10-22 00:36:30,982 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-22 00:36:30,983 INFO L276 IsEmpty]: Start isEmpty. Operand 538 states and 1784 transitions. [2020-10-22 00:36:30,985 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-10-22 00:36:30,985 INFO L414 BasicCegarLoop]: Found error trace [2020-10-22 00:36:30,985 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-22 00:36:30,986 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-22 00:36:30,986 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-22 00:36:30,986 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-22 00:36:30,987 INFO L82 PathProgramCache]: Analyzing trace with hash 1503123814, now seen corresponding path program 1 times [2020-10-22 00:36:30,988 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-22 00:36:30,988 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1934307574] [2020-10-22 00:36:30,989 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-22 00:36:31,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-22 00:36:31,086 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-22 00:36:31,086 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1934307574] [2020-10-22 00:36:31,086 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-22 00:36:31,086 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-10-22 00:36:31,087 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1189525022] [2020-10-22 00:36:31,087 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-22 00:36:31,088 INFO L249 McrAutomatonBuilder]: Started intersection. [2020-10-22 00:36:31,097 INFO L252 McrAutomatonBuilder]: Finished intersection with 17 states and 21 transitions. [2020-10-22 00:36:31,098 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-22 00:36:31,177 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-22 00:36:31,179 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-22 00:36:31,179 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-22 00:36:31,179 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-22 00:36:31,180 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-22 00:36:31,180 INFO L87 Difference]: Start difference. First operand 538 states and 1784 transitions. Second operand 3 states. [2020-10-22 00:36:31,193 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-22 00:36:31,193 INFO L93 Difference]: Finished difference Result 508 states and 1665 transitions. [2020-10-22 00:36:31,193 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-22 00:36:31,193 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 11 [2020-10-22 00:36:31,194 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-22 00:36:31,198 INFO L225 Difference]: With dead ends: 508 [2020-10-22 00:36:31,199 INFO L226 Difference]: Without dead ends: 508 [2020-10-22 00:36:31,200 INFO L677 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 [2020-10-22 00:36:31,203 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 508 states. [2020-10-22 00:36:31,220 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 508 to 508. [2020-10-22 00:36:31,220 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 508 states. [2020-10-22 00:36:31,224 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 508 states to 508 states and 1665 transitions. [2020-10-22 00:36:31,224 INFO L78 Accepts]: Start accepts. Automaton has 508 states and 1665 transitions. Word has length 11 [2020-10-22 00:36:31,224 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-22 00:36:31,224 INFO L481 AbstractCegarLoop]: Abstraction has 508 states and 1665 transitions. [2020-10-22 00:36:31,225 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-22 00:36:31,225 INFO L276 IsEmpty]: Start isEmpty. Operand 508 states and 1665 transitions. [2020-10-22 00:36:31,227 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-10-22 00:36:31,228 INFO L414 BasicCegarLoop]: Found error trace [2020-10-22 00:36:31,228 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-22 00:36:31,228 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-22 00:36:31,228 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-22 00:36:31,229 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-22 00:36:31,229 INFO L82 PathProgramCache]: Analyzing trace with hash -1088809907, now seen corresponding path program 1 times [2020-10-22 00:36:31,230 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-22 00:36:31,230 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1303157472] [2020-10-22 00:36:31,231 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-22 00:36:31,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-22 00:36:31,302 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-22 00:36:31,302 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1303157472] [2020-10-22 00:36:31,302 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-22 00:36:31,302 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-22 00:36:31,303 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1138795773] [2020-10-22 00:36:31,304 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-22 00:36:31,305 INFO L249 McrAutomatonBuilder]: Started intersection. [2020-10-22 00:36:31,308 INFO L252 McrAutomatonBuilder]: Finished intersection with 19 states and 24 transitions. [2020-10-22 00:36:31,308 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-22 00:36:31,383 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-22 00:36:31,384 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-22 00:36:31,384 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-22 00:36:31,384 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-22 00:36:31,384 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-22 00:36:31,385 INFO L87 Difference]: Start difference. First operand 508 states and 1665 transitions. Second operand 4 states. [2020-10-22 00:36:31,417 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-22 00:36:31,417 INFO L93 Difference]: Finished difference Result 748 states and 2407 transitions. [2020-10-22 00:36:31,417 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-22 00:36:31,418 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 12 [2020-10-22 00:36:31,418 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-22 00:36:31,422 INFO L225 Difference]: With dead ends: 748 [2020-10-22 00:36:31,422 INFO L226 Difference]: Without dead ends: 460 [2020-10-22 00:36:31,422 INFO L677 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 [2020-10-22 00:36:31,425 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 460 states. [2020-10-22 00:36:31,436 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 460 to 460. [2020-10-22 00:36:31,437 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 460 states. [2020-10-22 00:36:31,439 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 460 states to 460 states and 1467 transitions. [2020-10-22 00:36:31,440 INFO L78 Accepts]: Start accepts. Automaton has 460 states and 1467 transitions. Word has length 12 [2020-10-22 00:36:31,440 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-22 00:36:31,440 INFO L481 AbstractCegarLoop]: Abstraction has 460 states and 1467 transitions. [2020-10-22 00:36:31,440 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-22 00:36:31,441 INFO L276 IsEmpty]: Start isEmpty. Operand 460 states and 1467 transitions. [2020-10-22 00:36:31,442 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-10-22 00:36:31,443 INFO L414 BasicCegarLoop]: Found error trace [2020-10-22 00:36:31,443 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-22 00:36:31,443 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-22 00:36:31,443 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-22 00:36:31,444 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-22 00:36:31,444 INFO L82 PathProgramCache]: Analyzing trace with hash -647802977, now seen corresponding path program 2 times [2020-10-22 00:36:31,445 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-22 00:36:31,445 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [238610679] [2020-10-22 00:36:31,446 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-22 00:36:31,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-22 00:36:31,493 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-22 00:36:31,494 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [238610679] [2020-10-22 00:36:31,494 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-22 00:36:31,494 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-10-22 00:36:31,495 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1060234104] [2020-10-22 00:36:31,495 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-22 00:36:31,496 INFO L249 McrAutomatonBuilder]: Started intersection. [2020-10-22 00:36:31,499 INFO L252 McrAutomatonBuilder]: Finished intersection with 21 states and 28 transitions. [2020-10-22 00:36:31,499 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-22 00:36:31,596 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-22 00:36:31,596 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-22 00:36:31,596 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-22 00:36:31,597 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-22 00:36:31,597 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-22 00:36:31,597 INFO L87 Difference]: Start difference. First operand 460 states and 1467 transitions. Second operand 3 states. [2020-10-22 00:36:31,608 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-22 00:36:31,608 INFO L93 Difference]: Finished difference Result 442 states and 1398 transitions. [2020-10-22 00:36:31,609 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-22 00:36:31,609 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 12 [2020-10-22 00:36:31,609 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-22 00:36:31,613 INFO L225 Difference]: With dead ends: 442 [2020-10-22 00:36:31,613 INFO L226 Difference]: Without dead ends: 442 [2020-10-22 00:36:31,614 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-22 00:36:31,616 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 442 states. [2020-10-22 00:36:31,626 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 442 to 442. [2020-10-22 00:36:31,627 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 442 states. [2020-10-22 00:36:31,630 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 442 states to 442 states and 1398 transitions. [2020-10-22 00:36:31,630 INFO L78 Accepts]: Start accepts. Automaton has 442 states and 1398 transitions. Word has length 12 [2020-10-22 00:36:31,630 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-22 00:36:31,630 INFO L481 AbstractCegarLoop]: Abstraction has 442 states and 1398 transitions. [2020-10-22 00:36:31,631 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-22 00:36:31,631 INFO L276 IsEmpty]: Start isEmpty. Operand 442 states and 1398 transitions. [2020-10-22 00:36:31,632 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-10-22 00:36:31,632 INFO L414 BasicCegarLoop]: Found error trace [2020-10-22 00:36:31,632 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-22 00:36:31,632 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-22 00:36:31,633 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-22 00:36:31,653 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-22 00:36:31,653 INFO L82 PathProgramCache]: Analyzing trace with hash -912860165, now seen corresponding path program 1 times [2020-10-22 00:36:31,656 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-22 00:36:31,657 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [776559980] [2020-10-22 00:36:31,657 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-22 00:36:31,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-22 00:36:31,745 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-22 00:36:31,746 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [776559980] [2020-10-22 00:36:31,746 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-22 00:36:31,746 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-22 00:36:31,747 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [81121480] [2020-10-22 00:36:31,747 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-22 00:36:31,749 INFO L249 McrAutomatonBuilder]: Started intersection. [2020-10-22 00:36:31,756 INFO L252 McrAutomatonBuilder]: Finished intersection with 31 states and 47 transitions. [2020-10-22 00:36:31,756 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-22 00:36:31,816 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-22 00:36:31,817 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-22 00:36:31,817 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-22 00:36:31,817 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-22 00:36:31,818 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-22 00:36:31,818 INFO L87 Difference]: Start difference. First operand 442 states and 1398 transitions. Second operand 3 states. [2020-10-22 00:36:31,835 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-22 00:36:31,836 INFO L93 Difference]: Finished difference Result 596 states and 1797 transitions. [2020-10-22 00:36:31,836 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-22 00:36:31,836 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 13 [2020-10-22 00:36:31,837 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-22 00:36:31,840 INFO L225 Difference]: With dead ends: 596 [2020-10-22 00:36:31,840 INFO L226 Difference]: Without dead ends: 460 [2020-10-22 00:36:31,841 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-22 00:36:31,843 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 460 states. [2020-10-22 00:36:31,854 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 460 to 424. [2020-10-22 00:36:31,854 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 424 states. [2020-10-22 00:36:31,857 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 424 states to 424 states and 1261 transitions. [2020-10-22 00:36:31,857 INFO L78 Accepts]: Start accepts. Automaton has 424 states and 1261 transitions. Word has length 13 [2020-10-22 00:36:31,858 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-22 00:36:31,858 INFO L481 AbstractCegarLoop]: Abstraction has 424 states and 1261 transitions. [2020-10-22 00:36:31,858 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-22 00:36:31,858 INFO L276 IsEmpty]: Start isEmpty. Operand 424 states and 1261 transitions. [2020-10-22 00:36:31,859 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-10-22 00:36:31,859 INFO L414 BasicCegarLoop]: Found error trace [2020-10-22 00:36:31,860 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-22 00:36:31,860 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-22 00:36:31,860 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-22 00:36:31,860 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-22 00:36:31,861 INFO L82 PathProgramCache]: Analyzing trace with hash 1787336884, now seen corresponding path program 1 times [2020-10-22 00:36:31,864 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-22 00:36:31,864 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [714770775] [2020-10-22 00:36:31,864 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-22 00:36:31,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-22 00:36:31,911 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-22 00:36:31,911 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [714770775] [2020-10-22 00:36:31,912 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-22 00:36:31,912 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-22 00:36:31,912 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1668428181] [2020-10-22 00:36:31,912 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-22 00:36:31,916 INFO L249 McrAutomatonBuilder]: Started intersection. [2020-10-22 00:36:31,922 INFO L252 McrAutomatonBuilder]: Finished intersection with 39 states and 71 transitions. [2020-10-22 00:36:31,922 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-22 00:36:32,374 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-22 00:36:32,374 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-22 00:36:32,375 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-22 00:36:32,375 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-22 00:36:32,376 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-22 00:36:32,376 INFO L87 Difference]: Start difference. First operand 424 states and 1261 transitions. Second operand 4 states. [2020-10-22 00:36:32,412 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-22 00:36:32,412 INFO L93 Difference]: Finished difference Result 566 states and 1628 transitions. [2020-10-22 00:36:32,413 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-22 00:36:32,413 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 13 [2020-10-22 00:36:32,413 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-22 00:36:32,415 INFO L225 Difference]: With dead ends: 566 [2020-10-22 00:36:32,415 INFO L226 Difference]: Without dead ends: 278 [2020-10-22 00:36:32,416 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-22 00:36:32,418 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 278 states. [2020-10-22 00:36:32,428 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 278 to 278. [2020-10-22 00:36:32,428 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 278 states. [2020-10-22 00:36:32,430 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 278 states to 278 states and 791 transitions. [2020-10-22 00:36:32,430 INFO L78 Accepts]: Start accepts. Automaton has 278 states and 791 transitions. Word has length 13 [2020-10-22 00:36:32,431 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-22 00:36:32,431 INFO L481 AbstractCegarLoop]: Abstraction has 278 states and 791 transitions. [2020-10-22 00:36:32,431 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-22 00:36:32,431 INFO L276 IsEmpty]: Start isEmpty. Operand 278 states and 791 transitions. [2020-10-22 00:36:32,432 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-22 00:36:32,432 INFO L414 BasicCegarLoop]: Found error trace [2020-10-22 00:36:32,433 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-22 00:36:32,433 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-22 00:36:32,433 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-22 00:36:32,433 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-22 00:36:32,434 INFO L82 PathProgramCache]: Analyzing trace with hash 238144508, now seen corresponding path program 1 times [2020-10-22 00:36:32,439 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-22 00:36:32,439 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1568723186] [2020-10-22 00:36:32,439 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-22 00:36:32,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-22 00:36:32,540 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-22 00:36:32,540 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1568723186] [2020-10-22 00:36:32,540 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-22 00:36:32,541 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-22 00:36:32,541 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [523321692] [2020-10-22 00:36:32,541 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-22 00:36:32,543 INFO L249 McrAutomatonBuilder]: Started intersection. [2020-10-22 00:36:32,548 INFO L252 McrAutomatonBuilder]: Finished intersection with 33 states and 54 transitions. [2020-10-22 00:36:32,548 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-22 00:36:32,584 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 4 conjuncts [2020-10-22 00:36:32,615 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 4 conjuncts [2020-10-22 00:36:32,715 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 4 conjuncts [2020-10-22 00:36:32,796 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 4 conjuncts [2020-10-22 00:36:32,848 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 1 new interpolants: [10384#(not (= 4 ~__unbuffered_cnt~0))] [2020-10-22 00:36:32,848 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-22 00:36:32,849 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-22 00:36:32,849 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-22 00:36:32,849 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-22 00:36:32,849 INFO L87 Difference]: Start difference. First operand 278 states and 791 transitions. Second operand 5 states. [2020-10-22 00:36:32,935 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-22 00:36:32,936 INFO L93 Difference]: Finished difference Result 292 states and 753 transitions. [2020-10-22 00:36:32,936 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-22 00:36:32,936 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 14 [2020-10-22 00:36:32,937 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-22 00:36:32,938 INFO L225 Difference]: With dead ends: 292 [2020-10-22 00:36:32,938 INFO L226 Difference]: Without dead ends: 195 [2020-10-22 00:36:32,939 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-10-22 00:36:32,940 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 195 states. [2020-10-22 00:36:32,945 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 195 to 195. [2020-10-22 00:36:32,946 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 195 states. [2020-10-22 00:36:32,947 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 195 states to 195 states and 465 transitions. [2020-10-22 00:36:32,947 INFO L78 Accepts]: Start accepts. Automaton has 195 states and 465 transitions. Word has length 14 [2020-10-22 00:36:32,947 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-22 00:36:32,948 INFO L481 AbstractCegarLoop]: Abstraction has 195 states and 465 transitions. [2020-10-22 00:36:32,948 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-22 00:36:32,948 INFO L276 IsEmpty]: Start isEmpty. Operand 195 states and 465 transitions. [2020-10-22 00:36:32,949 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-10-22 00:36:32,949 INFO L414 BasicCegarLoop]: Found error trace [2020-10-22 00:36:32,949 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-22 00:36:32,949 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-22 00:36:32,950 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-22 00:36:32,950 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-22 00:36:32,950 INFO L82 PathProgramCache]: Analyzing trace with hash -1046603743, now seen corresponding path program 1 times [2020-10-22 00:36:32,951 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-22 00:36:32,952 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [550934483] [2020-10-22 00:36:32,952 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-22 00:36:32,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-22 00:36:33,019 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-22 00:36:33,019 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [550934483] [2020-10-22 00:36:33,020 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-22 00:36:33,020 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-22 00:36:33,020 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [710274656] [2020-10-22 00:36:33,020 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-22 00:36:33,023 INFO L249 McrAutomatonBuilder]: Started intersection. [2020-10-22 00:36:33,030 INFO L252 McrAutomatonBuilder]: Finished intersection with 38 states and 62 transitions. [2020-10-22 00:36:33,030 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-22 00:36:33,332 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 1 new interpolants: [11077#(<= ~__unbuffered_cnt~0 0)] [2020-10-22 00:36:33,333 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-22 00:36:33,333 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-22 00:36:33,333 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-22 00:36:33,333 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-10-22 00:36:33,333 INFO L87 Difference]: Start difference. First operand 195 states and 465 transitions. Second operand 7 states. [2020-10-22 00:36:33,418 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-22 00:36:33,418 INFO L93 Difference]: Finished difference Result 189 states and 428 transitions. [2020-10-22 00:36:33,422 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-22 00:36:33,422 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 16 [2020-10-22 00:36:33,423 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-22 00:36:33,424 INFO L225 Difference]: With dead ends: 189 [2020-10-22 00:36:33,424 INFO L226 Difference]: Without dead ends: 150 [2020-10-22 00:36:33,424 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2020-10-22 00:36:33,425 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 150 states. [2020-10-22 00:36:33,429 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 150 to 150. [2020-10-22 00:36:33,429 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 150 states. [2020-10-22 00:36:33,430 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 150 states to 150 states and 339 transitions. [2020-10-22 00:36:33,430 INFO L78 Accepts]: Start accepts. Automaton has 150 states and 339 transitions. Word has length 16 [2020-10-22 00:36:33,430 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-22 00:36:33,430 INFO L481 AbstractCegarLoop]: Abstraction has 150 states and 339 transitions. [2020-10-22 00:36:33,430 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-22 00:36:33,430 INFO L276 IsEmpty]: Start isEmpty. Operand 150 states and 339 transitions. [2020-10-22 00:36:33,431 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-10-22 00:36:33,431 INFO L414 BasicCegarLoop]: Found error trace [2020-10-22 00:36:33,432 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-22 00:36:33,432 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-22 00:36:33,432 INFO L429 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-22 00:36:33,432 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-22 00:36:33,432 INFO L82 PathProgramCache]: Analyzing trace with hash 1569359463, now seen corresponding path program 1 times [2020-10-22 00:36:33,438 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-22 00:36:33,438 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1426420576] [2020-10-22 00:36:33,438 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-22 00:36:33,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-22 00:36:33,471 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-22 00:36:33,472 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1426420576] [2020-10-22 00:36:33,472 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-22 00:36:33,472 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-22 00:36:33,473 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1510797047] [2020-10-22 00:36:33,473 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-22 00:36:33,474 INFO L249 McrAutomatonBuilder]: Started intersection. [2020-10-22 00:36:33,480 INFO L252 McrAutomatonBuilder]: Finished intersection with 34 states and 48 transitions. [2020-10-22 00:36:33,480 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-22 00:36:33,531 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-22 00:36:33,532 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-22 00:36:33,532 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-22 00:36:33,532 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-22 00:36:33,532 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-22 00:36:33,532 INFO L87 Difference]: Start difference. First operand 150 states and 339 transitions. Second operand 4 states. [2020-10-22 00:36:33,550 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-22 00:36:33,551 INFO L93 Difference]: Finished difference Result 182 states and 403 transitions. [2020-10-22 00:36:33,551 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-22 00:36:33,551 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 18 [2020-10-22 00:36:33,551 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-22 00:36:33,552 INFO L225 Difference]: With dead ends: 182 [2020-10-22 00:36:33,552 INFO L226 Difference]: Without dead ends: 139 [2020-10-22 00:36:33,553 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-22 00:36:33,554 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 139 states. [2020-10-22 00:36:33,556 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 139 to 137. [2020-10-22 00:36:33,556 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 137 states. [2020-10-22 00:36:33,557 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 137 states to 137 states and 301 transitions. [2020-10-22 00:36:33,557 INFO L78 Accepts]: Start accepts. Automaton has 137 states and 301 transitions. Word has length 18 [2020-10-22 00:36:33,557 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-22 00:36:33,557 INFO L481 AbstractCegarLoop]: Abstraction has 137 states and 301 transitions. [2020-10-22 00:36:33,557 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-22 00:36:33,558 INFO L276 IsEmpty]: Start isEmpty. Operand 137 states and 301 transitions. [2020-10-22 00:36:33,558 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-10-22 00:36:33,558 INFO L414 BasicCegarLoop]: Found error trace [2020-10-22 00:36:33,558 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-22 00:36:33,559 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-22 00:36:33,559 INFO L429 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-22 00:36:33,559 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-22 00:36:33,559 INFO L82 PathProgramCache]: Analyzing trace with hash 1563997083, now seen corresponding path program 2 times [2020-10-22 00:36:33,560 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-22 00:36:33,560 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [816617087] [2020-10-22 00:36:33,561 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-22 00:36:33,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-22 00:36:33,621 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-22 00:36:33,622 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [816617087] [2020-10-22 00:36:33,622 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-22 00:36:33,622 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-22 00:36:33,622 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [916146023] [2020-10-22 00:36:33,623 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-22 00:36:33,624 INFO L249 McrAutomatonBuilder]: Started intersection. [2020-10-22 00:36:33,630 INFO L252 McrAutomatonBuilder]: Finished intersection with 43 states and 66 transitions. [2020-10-22 00:36:33,631 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-22 00:36:33,708 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 1 new interpolants: [12039#(<= ~__unbuffered_cnt~0 0)] [2020-10-22 00:36:33,709 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-22 00:36:33,709 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-22 00:36:33,709 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-22 00:36:33,709 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-10-22 00:36:33,710 INFO L87 Difference]: Start difference. First operand 137 states and 301 transitions. Second operand 8 states. [2020-10-22 00:36:33,795 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-22 00:36:33,796 INFO L93 Difference]: Finished difference Result 132 states and 289 transitions. [2020-10-22 00:36:33,796 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-22 00:36:33,796 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 18 [2020-10-22 00:36:33,796 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-22 00:36:33,797 INFO L225 Difference]: With dead ends: 132 [2020-10-22 00:36:33,797 INFO L226 Difference]: Without dead ends: 51 [2020-10-22 00:36:33,798 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2020-10-22 00:36:33,801 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51 states. [2020-10-22 00:36:33,802 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51 to 51. [2020-10-22 00:36:33,802 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 51 states. [2020-10-22 00:36:33,803 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 97 transitions. [2020-10-22 00:36:33,803 INFO L78 Accepts]: Start accepts. Automaton has 51 states and 97 transitions. Word has length 18 [2020-10-22 00:36:33,803 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-22 00:36:33,803 INFO L481 AbstractCegarLoop]: Abstraction has 51 states and 97 transitions. [2020-10-22 00:36:33,803 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-22 00:36:33,804 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 97 transitions. [2020-10-22 00:36:33,805 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2020-10-22 00:36:33,805 INFO L414 BasicCegarLoop]: Found error trace [2020-10-22 00:36:33,806 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-22 00:36:33,806 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-22 00:36:33,806 INFO L429 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-22 00:36:33,806 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-22 00:36:33,806 INFO L82 PathProgramCache]: Analyzing trace with hash -299924038, now seen corresponding path program 1 times [2020-10-22 00:36:33,813 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-22 00:36:33,814 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [475464663] [2020-10-22 00:36:33,814 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-22 00:36:33,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-22 00:36:33,848 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-22 00:36:33,849 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [475464663] [2020-10-22 00:36:33,849 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-22 00:36:33,849 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-22 00:36:33,849 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [822780049] [2020-10-22 00:36:33,850 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-22 00:36:33,852 INFO L249 McrAutomatonBuilder]: Started intersection. [2020-10-22 00:36:33,865 INFO L252 McrAutomatonBuilder]: Finished intersection with 52 states and 80 transitions. [2020-10-22 00:36:33,866 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-22 00:36:33,894 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-22 00:36:33,895 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-22 00:36:33,895 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-22 00:36:33,895 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-22 00:36:33,896 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-22 00:36:33,896 INFO L87 Difference]: Start difference. First operand 51 states and 97 transitions. Second operand 3 states. [2020-10-22 00:36:33,905 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-22 00:36:33,905 INFO L93 Difference]: Finished difference Result 50 states and 96 transitions. [2020-10-22 00:36:33,906 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-22 00:36:33,906 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 20 [2020-10-22 00:36:33,906 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-22 00:36:33,906 INFO L225 Difference]: With dead ends: 50 [2020-10-22 00:36:33,906 INFO L226 Difference]: Without dead ends: 0 [2020-10-22 00:36:33,907 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-22 00:36:33,907 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-10-22 00:36:33,907 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-10-22 00:36:33,907 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-10-22 00:36:33,908 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-10-22 00:36:33,908 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 20 [2020-10-22 00:36:33,908 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-22 00:36:33,908 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-10-22 00:36:33,908 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-22 00:36:33,909 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-10-22 00:36:33,909 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-10-22 00:36:33,909 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-22 00:36:33,913 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.10 12:36:33 BasicIcfg [2020-10-22 00:36:33,914 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-22 00:36:33,915 INFO L168 Benchmark]: Toolchain (without parser) took 7368.44 ms. Allocated memory was 147.3 MB in the beginning and 282.6 MB in the end (delta: 135.3 MB). Free memory was 101.7 MB in the beginning and 120.6 MB in the end (delta: -18.9 MB). Peak memory consumption was 116.4 MB. Max. memory is 7.1 GB. [2020-10-22 00:36:33,920 INFO L168 Benchmark]: CDTParser took 3.15 ms. Allocated memory is still 147.3 MB. Free memory was 122.0 MB in the beginning and 121.8 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2020-10-22 00:36:33,921 INFO L168 Benchmark]: CACSL2BoogieTranslator took 854.89 ms. Allocated memory was 147.3 MB in the beginning and 204.5 MB in the end (delta: 57.1 MB). Free memory was 100.8 MB in the beginning and 158.2 MB in the end (delta: -57.4 MB). Peak memory consumption was 20.3 MB. Max. memory is 7.1 GB. [2020-10-22 00:36:33,922 INFO L168 Benchmark]: Boogie Procedure Inliner took 54.90 ms. Allocated memory is still 204.5 MB. Free memory was 158.2 MB in the beginning and 155.5 MB in the end (delta: 2.7 MB). Peak memory consumption was 2.7 MB. Max. memory is 7.1 GB. [2020-10-22 00:36:33,923 INFO L168 Benchmark]: Boogie Preprocessor took 29.81 ms. Allocated memory is still 204.5 MB. Free memory was 155.5 MB in the beginning and 154.2 MB in the end (delta: 1.3 MB). Peak memory consumption was 1.3 MB. Max. memory is 7.1 GB. [2020-10-22 00:36:33,924 INFO L168 Benchmark]: RCFGBuilder took 506.38 ms. Allocated memory is still 204.5 MB. Free memory was 154.2 MB in the beginning and 128.5 MB in the end (delta: 25.7 MB). Peak memory consumption was 25.7 MB. Max. memory is 7.1 GB. [2020-10-22 00:36:33,929 INFO L168 Benchmark]: TraceAbstraction took 5912.58 ms. Allocated memory was 204.5 MB in the beginning and 282.6 MB in the end (delta: 78.1 MB). Free memory was 127.9 MB in the beginning and 120.6 MB in the end (delta: 7.3 MB). Peak memory consumption was 85.4 MB. Max. memory is 7.1 GB. [2020-10-22 00:36:33,939 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 3.15 ms. Allocated memory is still 147.3 MB. Free memory was 122.0 MB in the beginning and 121.8 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 854.89 ms. Allocated memory was 147.3 MB in the beginning and 204.5 MB in the end (delta: 57.1 MB). Free memory was 100.8 MB in the beginning and 158.2 MB in the end (delta: -57.4 MB). Peak memory consumption was 20.3 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 54.90 ms. Allocated memory is still 204.5 MB. Free memory was 158.2 MB in the beginning and 155.5 MB in the end (delta: 2.7 MB). Peak memory consumption was 2.7 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 29.81 ms. Allocated memory is still 204.5 MB. Free memory was 155.5 MB in the beginning and 154.2 MB in the end (delta: 1.3 MB). Peak memory consumption was 1.3 MB. Max. memory is 7.1 GB. * RCFGBuilder took 506.38 ms. Allocated memory is still 204.5 MB. Free memory was 154.2 MB in the beginning and 128.5 MB in the end (delta: 25.7 MB). Peak memory consumption was 25.7 MB. Max. memory is 7.1 GB. * TraceAbstraction took 5912.58 ms. Allocated memory was 204.5 MB in the beginning and 282.6 MB in the end (delta: 78.1 MB). Free memory was 127.9 MB in the beginning and 120.6 MB in the end (delta: 7.3 MB). Peak memory consumption was 85.4 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks 1132 VarBasedMoverChecksPositive, 41 VarBasedMoverChecksNegative, 0 SemBasedMoverChecksPositive, 0 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.0s, 64 CheckedPairsTotal, LiptonReductionStatistics: ReductionTime: 2.2s, 99 PlacesBefore, 38 PlacesAfterwards, 89 TransitionsBefore, 26 TransitionsAfterwards, 2042 CoEnabledTransitionPairs, 7 FixpointIterations, 17 TrivialSequentialCompositions, 49 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 14 ConcurrentYvCompositions, 2 ChoiceCompositions, 82 TotalNumberOfCompositions, 4334 MoverChecksTotal - PositiveResult [Line: 17]: 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 5 procedures, 87 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 5.7s, OverallIterations: 11, TraceHistogramMax: 1, AutomataDifference: 0.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 2.2s, HoareTripleCheckerStatistics: 240 SDtfs, 181 SDslu, 323 SDs, 0 SdLazy, 178 SolverSat, 47 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 157 GetRequests, 125 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=706occurred 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: 0.2s AutomataMinimizationTime, 11 MinimizatonAttempts, 38 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 0.5s InterpolantComputationTime, 157 NumberOfCodeBlocks, 157 NumberOfCodeBlocksAsserted, 11 NumberOfCheckSat, 146 ConstructedInterpolants, 0 QuantifiedInterpolants, 5504 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...