/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -s ../../../trunk/examples/settings/automizer/mcr/svcomp-Reach-32bit-Automizer_Default-noMmResRef-FA-McrAutomaton-WP.epf -i ../../../trunk/examples/svcomp/pthread-wmm/safe014_pso.oepc.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c7e336b [2020-10-06 01:03:41,068 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-06 01:03:41,072 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-06 01:03:41,114 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-06 01:03:41,114 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-06 01:03:41,117 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-06 01:03:41,119 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-06 01:03:41,124 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-06 01:03:41,130 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-06 01:03:41,131 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-06 01:03:41,132 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-06 01:03:41,133 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-06 01:03:41,134 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-06 01:03:41,134 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-06 01:03:41,135 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-06 01:03:41,139 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-06 01:03:41,141 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-06 01:03:41,144 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-06 01:03:41,147 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-06 01:03:41,153 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-06 01:03:41,155 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-06 01:03:41,158 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-06 01:03:41,159 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-06 01:03:41,160 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-06 01:03:41,168 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-10-06 01:03:41,173 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-06 01:03:41,174 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-06 01:03:41,175 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-06 01:03:41,183 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-06 01:03:41,184 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-06 01:03:41,185 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-06 01:03:41,188 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-06 01:03:41,188 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-06 01:03:41,188 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-06 01:03:41,189 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-06 01:03:41,190 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-06 01:03:41,191 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 [2020-10-06 01:03:41,234 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-06 01:03:41,234 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-06 01:03:41,236 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-06 01:03:41,236 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-06 01:03:41,236 INFO L138 SettingsManager]: * Use SBE=true [2020-10-06 01:03:41,237 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-06 01:03:41,237 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-06 01:03:41,237 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-06 01:03:41,237 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-06 01:03:41,237 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-06 01:03:41,239 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-06 01:03:41,239 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-06 01:03:41,239 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-06 01:03:41,240 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-06 01:03:41,240 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-06 01:03:41,240 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-06 01:03:41,240 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-06 01:03:41,240 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-06 01:03:41,241 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-06 01:03:41,241 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-06 01:03:41,241 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-06 01:03:41,241 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-06 01:03:41,242 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-06 01:03:41,242 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=Craig_NestedInterpolation [2020-10-06 01:03:41,242 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-06 01:03:41,242 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-06 01:03:41,242 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-06 01:03:41,242 INFO L138 SettingsManager]: * Override the interpolant automaton setting of the refinement strategy=true [2020-10-06 01:03:41,243 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=VARIABLE_BASED_MOVER_CHECK [2020-10-06 01:03:41,243 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-06 01:03:41,243 INFO L138 SettingsManager]: * Interpolant automaton=MCR [2020-10-06 01:03:41,553 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-06 01:03:41,565 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-06 01:03:41,569 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-06 01:03:41,570 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-06 01:03:41,571 INFO L275 PluginConnector]: CDTParser initialized [2020-10-06 01:03:41,572 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe014_pso.oepc.i [2020-10-06 01:03:41,635 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3a6bb276e/6fb2fc9820ec42fcb4f94cb0d60d8f45/FLAGff91778d9 [2020-10-06 01:03:42,223 INFO L306 CDTParser]: Found 1 translation units. [2020-10-06 01:03:42,228 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe014_pso.oepc.i [2020-10-06 01:03:42,246 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3a6bb276e/6fb2fc9820ec42fcb4f94cb0d60d8f45/FLAGff91778d9 [2020-10-06 01:03:42,487 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3a6bb276e/6fb2fc9820ec42fcb4f94cb0d60d8f45 [2020-10-06 01:03:42,498 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-06 01:03:42,500 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2020-10-06 01:03:42,501 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-06 01:03:42,501 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-06 01:03:42,505 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-06 01:03:42,506 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.10 01:03:42" (1/1) ... [2020-10-06 01:03:42,508 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5624ee08 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.10 01:03:42, skipping insertion in model container [2020-10-06 01:03:42,509 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.10 01:03:42" (1/1) ... [2020-10-06 01:03:42,517 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-06 01:03:42,559 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-06 01:03:43,031 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-06 01:03:43,046 INFO L203 MainTranslator]: Completed pre-run [2020-10-06 01:03:43,094 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-06 01:03:43,176 INFO L208 MainTranslator]: Completed translation [2020-10-06 01:03:43,177 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.10 01:03:43 WrapperNode [2020-10-06 01:03:43,177 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-06 01:03:43,178 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-10-06 01:03:43,178 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-10-06 01:03:43,178 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-10-06 01:03:43,187 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.10 01:03:43" (1/1) ... [2020-10-06 01:03:43,204 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.10 01:03:43" (1/1) ... [2020-10-06 01:03:43,228 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-10-06 01:03:43,229 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-06 01:03:43,229 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-06 01:03:43,229 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-06 01:03:43,239 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.10 01:03:43" (1/1) ... [2020-10-06 01:03:43,239 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.10 01:03:43" (1/1) ... [2020-10-06 01:03:43,242 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.10 01:03:43" (1/1) ... [2020-10-06 01:03:43,242 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.10 01:03:43" (1/1) ... [2020-10-06 01:03:43,249 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.10 01:03:43" (1/1) ... [2020-10-06 01:03:43,251 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.10 01:03:43" (1/1) ... [2020-10-06 01:03:43,254 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.10 01:03:43" (1/1) ... [2020-10-06 01:03:43,257 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-06 01:03:43,258 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-06 01:03:43,258 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-06 01:03:43,258 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-06 01:03:43,259 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.10 01:03:43" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-06 01:03:43,332 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-06 01:03:43,333 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2020-10-06 01:03:43,333 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-06 01:03:43,333 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-06 01:03:43,333 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2020-10-06 01:03:43,333 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2020-10-06 01:03:43,333 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2020-10-06 01:03:43,334 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2020-10-06 01:03:43,334 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2020-10-06 01:03:43,334 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2020-10-06 01:03:43,334 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2020-10-06 01:03:43,334 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-06 01:03:43,334 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-06 01:03:43,336 WARN L208 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2020-10-06 01:03:43,721 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-06 01:03:43,721 INFO L298 CfgBuilder]: Removed 8 assume(true) statements. [2020-10-06 01:03:43,724 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.10 01:03:43 BoogieIcfgContainer [2020-10-06 01:03:43,724 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-06 01:03:43,725 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-06 01:03:43,726 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-06 01:03:43,729 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-06 01:03:43,729 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.10 01:03:42" (1/3) ... [2020-10-06 01:03:43,730 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4ed4c71d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.10 01:03:43, skipping insertion in model container [2020-10-06 01:03:43,731 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.10 01:03:43" (2/3) ... [2020-10-06 01:03:43,731 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4ed4c71d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.10 01:03:43, skipping insertion in model container [2020-10-06 01:03:43,731 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.10 01:03:43" (3/3) ... [2020-10-06 01:03:43,733 INFO L109 eAbstractionObserver]: Analyzing ICFG safe014_pso.oepc.i [2020-10-06 01:03:43,742 WARN L146 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2020-10-06 01:03:43,743 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-06 01:03:43,750 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-06 01:03:43,751 INFO L340 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2020-10-06 01:03:43,781 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 01:03:43,782 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 01:03:43,782 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 01:03:43,783 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 01:03:43,784 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 01:03:43,784 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 01:03:43,784 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 01:03:43,785 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 01:03:43,785 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 01:03:43,785 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 01:03:43,786 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 01:03:43,786 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 01:03:43,786 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 01:03:43,787 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 01:03:43,787 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 01:03:43,787 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 01:03:43,788 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 01:03:43,788 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 01:03:43,792 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 01:03:43,792 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 01:03:43,793 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 01:03:43,793 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 01:03:43,800 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 01:03:43,800 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 01:03:43,800 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 01:03:43,801 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 01:03:43,807 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 01:03:43,807 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 01:03:43,807 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 01:03:43,807 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 01:03:43,836 INFO L251 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2020-10-06 01:03:43,858 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-06 01:03:43,859 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-06 01:03:43,859 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-06 01:03:43,859 INFO L378 AbstractCegarLoop]: Backedges is MCR [2020-10-06 01:03:43,859 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-06 01:03:43,860 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-06 01:03:43,860 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-06 01:03:43,860 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-06 01:03:43,876 INFO L152 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 78 places, 70 transitions, 155 flow [2020-10-06 01:03:43,879 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 78 places, 70 transitions, 155 flow [2020-10-06 01:03:43,924 INFO L129 PetriNetUnfolder]: 2/67 cut-off events. [2020-10-06 01:03:43,925 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-10-06 01:03:43,930 INFO L80 FinitePrefix]: Finished finitePrefix Result has 77 conditions, 67 events. 2/67 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 46 event pairs, 0 based on Foata normal form. 0/64 useless extension candidates. Maximal degree in co-relation 55. Up to 2 conditions per place. [2020-10-06 01:03:43,933 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 78 places, 70 transitions, 155 flow [2020-10-06 01:03:43,958 INFO L129 PetriNetUnfolder]: 2/67 cut-off events. [2020-10-06 01:03:43,959 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-10-06 01:03:43,960 INFO L80 FinitePrefix]: Finished finitePrefix Result has 77 conditions, 67 events. 2/67 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 46 event pairs, 0 based on Foata normal form. 0/64 useless extension candidates. Maximal degree in co-relation 55. Up to 2 conditions per place. [2020-10-06 01:03:43,962 INFO L158 etLargeBlockEncoding]: Number of co-enabled transitions 1260 [2020-10-06 01:03:43,963 INFO L182 etLargeBlockEncoding]: Variable Check. [2020-10-06 01:03:45,247 WARN L193 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 49 [2020-10-06 01:03:45,409 INFO L206 etLargeBlockEncoding]: Checked pairs total: 2700 [2020-10-06 01:03:45,410 INFO L214 etLargeBlockEncoding]: Total number of compositions: 59 [2020-10-06 01:03:45,413 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 31 places, 22 transitions, 59 flow [2020-10-06 01:03:45,457 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 298 states. [2020-10-06 01:03:45,459 INFO L276 IsEmpty]: Start isEmpty. Operand 298 states. [2020-10-06 01:03:45,470 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-10-06 01:03:45,470 INFO L414 BasicCegarLoop]: Found error trace [2020-10-06 01:03:45,471 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-10-06 01:03:45,471 INFO L427 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-06 01:03:45,477 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-06 01:03:45,477 INFO L82 PathProgramCache]: Analyzing trace with hash -1011733384, now seen corresponding path program 1 times [2020-10-06 01:03:45,504 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-06 01:03:45,504 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1957050980] [2020-10-06 01:03:45,504 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-06 01:03:45,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-06 01:03:45,706 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-06 01:03:45,707 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1957050980] [2020-10-06 01:03:45,708 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-06 01:03:45,708 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-10-06 01:03:45,709 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [602525254] [2020-10-06 01:03:45,710 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-06 01:03:45,713 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-06 01:03:45,728 INFO L258 McrAutomatonBuilder]: Finished intersection with 9 states and 8 transitions. [2020-10-06 01:03:45,728 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-06 01:03:45,733 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-06 01:03:45,733 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-06 01:03:45,734 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-06 01:03:45,747 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-06 01:03:45,748 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-06 01:03:45,750 INFO L87 Difference]: Start difference. First operand 298 states. Second operand 3 states. [2020-10-06 01:03:45,785 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-06 01:03:45,786 INFO L93 Difference]: Finished difference Result 282 states and 808 transitions. [2020-10-06 01:03:45,786 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-06 01:03:45,788 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 8 [2020-10-06 01:03:45,788 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-06 01:03:45,802 INFO L225 Difference]: With dead ends: 282 [2020-10-06 01:03:45,803 INFO L226 Difference]: Without dead ends: 218 [2020-10-06 01:03:45,804 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-06 01:03:45,829 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 218 states. [2020-10-06 01:03:45,868 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 218 to 218. [2020-10-06 01:03:45,870 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 218 states. [2020-10-06 01:03:45,874 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 218 states to 218 states and 600 transitions. [2020-10-06 01:03:45,876 INFO L78 Accepts]: Start accepts. Automaton has 218 states and 600 transitions. Word has length 8 [2020-10-06 01:03:45,877 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-06 01:03:45,877 INFO L479 AbstractCegarLoop]: Abstraction has 218 states and 600 transitions. [2020-10-06 01:03:45,877 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-06 01:03:45,878 INFO L276 IsEmpty]: Start isEmpty. Operand 218 states and 600 transitions. [2020-10-06 01:03:45,879 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-10-06 01:03:45,879 INFO L414 BasicCegarLoop]: Found error trace [2020-10-06 01:03:45,879 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-06 01:03:45,880 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-06 01:03:45,880 INFO L427 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-06 01:03:45,880 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-06 01:03:45,880 INFO L82 PathProgramCache]: Analyzing trace with hash -1035713695, now seen corresponding path program 1 times [2020-10-06 01:03:45,882 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-06 01:03:45,882 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1152907549] [2020-10-06 01:03:45,882 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-06 01:03:45,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-06 01:03:45,948 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-06 01:03:45,949 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1152907549] [2020-10-06 01:03:45,949 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-06 01:03:45,949 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-06 01:03:45,950 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [226198752] [2020-10-06 01:03:45,950 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-06 01:03:45,951 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-06 01:03:45,954 INFO L258 McrAutomatonBuilder]: Finished intersection with 15 states and 19 transitions. [2020-10-06 01:03:45,954 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-06 01:03:46,000 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-06 01:03:46,002 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-06 01:03:46,002 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-06 01:03:46,003 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-06 01:03:46,003 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-06 01:03:46,003 INFO L87 Difference]: Start difference. First operand 218 states and 600 transitions. Second operand 4 states. [2020-10-06 01:03:46,034 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-06 01:03:46,034 INFO L93 Difference]: Finished difference Result 242 states and 634 transitions. [2020-10-06 01:03:46,035 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-06 01:03:46,035 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 9 [2020-10-06 01:03:46,035 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-06 01:03:46,037 INFO L225 Difference]: With dead ends: 242 [2020-10-06 01:03:46,037 INFO L226 Difference]: Without dead ends: 116 [2020-10-06 01:03:46,038 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-06 01:03:46,040 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 116 states. [2020-10-06 01:03:46,048 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 116 to 116. [2020-10-06 01:03:46,048 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 116 states. [2020-10-06 01:03:46,050 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 116 states to 116 states and 284 transitions. [2020-10-06 01:03:46,050 INFO L78 Accepts]: Start accepts. Automaton has 116 states and 284 transitions. Word has length 9 [2020-10-06 01:03:46,050 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-06 01:03:46,050 INFO L479 AbstractCegarLoop]: Abstraction has 116 states and 284 transitions. [2020-10-06 01:03:46,050 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-06 01:03:46,050 INFO L276 IsEmpty]: Start isEmpty. Operand 116 states and 284 transitions. [2020-10-06 01:03:46,051 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-10-06 01:03:46,052 INFO L414 BasicCegarLoop]: Found error trace [2020-10-06 01:03:46,052 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-06 01:03:46,052 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-06 01:03:46,052 INFO L427 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-06 01:03:46,052 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-06 01:03:46,053 INFO L82 PathProgramCache]: Analyzing trace with hash 1517475135, now seen corresponding path program 1 times [2020-10-06 01:03:46,054 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-06 01:03:46,055 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1454566027] [2020-10-06 01:03:46,055 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-06 01:03:46,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-06 01:03:46,113 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-06 01:03:46,114 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1454566027] [2020-10-06 01:03:46,114 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-06 01:03:46,114 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-10-06 01:03:46,115 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1495298261] [2020-10-06 01:03:46,115 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-06 01:03:46,116 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-06 01:03:46,119 INFO L258 McrAutomatonBuilder]: Finished intersection with 15 states and 17 transitions. [2020-10-06 01:03:46,119 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-06 01:03:46,126 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-06 01:03:46,127 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-06 01:03:46,127 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-06 01:03:46,127 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-06 01:03:46,128 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-06 01:03:46,128 INFO L87 Difference]: Start difference. First operand 116 states and 284 transitions. Second operand 3 states. [2020-10-06 01:03:46,138 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-06 01:03:46,138 INFO L93 Difference]: Finished difference Result 110 states and 265 transitions. [2020-10-06 01:03:46,139 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-06 01:03:46,139 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 11 [2020-10-06 01:03:46,139 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-06 01:03:46,140 INFO L225 Difference]: With dead ends: 110 [2020-10-06 01:03:46,141 INFO L226 Difference]: Without dead ends: 110 [2020-10-06 01:03:46,141 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-06 01:03:46,143 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 110 states. [2020-10-06 01:03:46,149 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 110 to 110. [2020-10-06 01:03:46,149 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 110 states. [2020-10-06 01:03:46,150 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 110 states to 110 states and 265 transitions. [2020-10-06 01:03:46,150 INFO L78 Accepts]: Start accepts. Automaton has 110 states and 265 transitions. Word has length 11 [2020-10-06 01:03:46,150 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-06 01:03:46,150 INFO L479 AbstractCegarLoop]: Abstraction has 110 states and 265 transitions. [2020-10-06 01:03:46,151 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-06 01:03:46,151 INFO L276 IsEmpty]: Start isEmpty. Operand 110 states and 265 transitions. [2020-10-06 01:03:46,152 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-10-06 01:03:46,152 INFO L414 BasicCegarLoop]: Found error trace [2020-10-06 01:03:46,152 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-06 01:03:46,152 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-06 01:03:46,152 INFO L427 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-06 01:03:46,153 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-06 01:03:46,153 INFO L82 PathProgramCache]: Analyzing trace with hash -142823170, now seen corresponding path program 1 times [2020-10-06 01:03:46,154 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-06 01:03:46,155 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [135735659] [2020-10-06 01:03:46,155 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-06 01:03:46,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-06 01:03:46,224 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-06 01:03:46,225 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [135735659] [2020-10-06 01:03:46,225 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-06 01:03:46,225 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-06 01:03:46,225 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1074643381] [2020-10-06 01:03:46,226 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-06 01:03:46,227 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-06 01:03:46,229 INFO L258 McrAutomatonBuilder]: Finished intersection with 19 states and 24 transitions. [2020-10-06 01:03:46,230 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-06 01:03:46,241 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-06 01:03:46,242 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-06 01:03:46,242 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-06 01:03:46,242 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-06 01:03:46,243 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-06 01:03:46,243 INFO L87 Difference]: Start difference. First operand 110 states and 265 transitions. Second operand 3 states. [2020-10-06 01:03:46,256 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-06 01:03:46,256 INFO L93 Difference]: Finished difference Result 104 states and 246 transitions. [2020-10-06 01:03:46,257 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-06 01:03:46,257 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 12 [2020-10-06 01:03:46,257 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-06 01:03:46,258 INFO L225 Difference]: With dead ends: 104 [2020-10-06 01:03:46,258 INFO L226 Difference]: Without dead ends: 104 [2020-10-06 01:03:46,259 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-06 01:03:46,260 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 104 states. [2020-10-06 01:03:46,265 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 104 to 104. [2020-10-06 01:03:46,266 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 104 states. [2020-10-06 01:03:46,266 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 104 states to 104 states and 246 transitions. [2020-10-06 01:03:46,267 INFO L78 Accepts]: Start accepts. Automaton has 104 states and 246 transitions. Word has length 12 [2020-10-06 01:03:46,267 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-06 01:03:46,267 INFO L479 AbstractCegarLoop]: Abstraction has 104 states and 246 transitions. [2020-10-06 01:03:46,267 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-06 01:03:46,267 INFO L276 IsEmpty]: Start isEmpty. Operand 104 states and 246 transitions. [2020-10-06 01:03:46,268 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-10-06 01:03:46,269 INFO L414 BasicCegarLoop]: Found error trace [2020-10-06 01:03:46,269 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-06 01:03:46,269 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-06 01:03:46,269 INFO L427 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-06 01:03:46,269 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-06 01:03:46,270 INFO L82 PathProgramCache]: Analyzing trace with hash -132602240, now seen corresponding path program 1 times [2020-10-06 01:03:46,271 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-06 01:03:46,271 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [791208418] [2020-10-06 01:03:46,271 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-06 01:03:46,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-06 01:03:46,309 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-06 01:03:46,310 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [791208418] [2020-10-06 01:03:46,310 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-06 01:03:46,310 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-06 01:03:46,310 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1640670579] [2020-10-06 01:03:46,311 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-06 01:03:46,312 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-06 01:03:46,316 INFO L258 McrAutomatonBuilder]: Finished intersection with 25 states and 37 transitions. [2020-10-06 01:03:46,316 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-06 01:03:46,338 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-06 01:03:46,339 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-06 01:03:46,339 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-06 01:03:46,339 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-06 01:03:46,339 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-06 01:03:46,340 INFO L87 Difference]: Start difference. First operand 104 states and 246 transitions. Second operand 4 states. [2020-10-06 01:03:46,363 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-06 01:03:46,363 INFO L93 Difference]: Finished difference Result 158 states and 375 transitions. [2020-10-06 01:03:46,364 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-06 01:03:46,364 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 13 [2020-10-06 01:03:46,364 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-06 01:03:46,365 INFO L225 Difference]: With dead ends: 158 [2020-10-06 01:03:46,365 INFO L226 Difference]: Without dead ends: 104 [2020-10-06 01:03:46,366 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-06 01:03:46,379 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 104 states. [2020-10-06 01:03:46,384 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 104 to 104. [2020-10-06 01:03:46,384 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 104 states. [2020-10-06 01:03:46,385 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 104 states to 104 states and 244 transitions. [2020-10-06 01:03:46,385 INFO L78 Accepts]: Start accepts. Automaton has 104 states and 244 transitions. Word has length 13 [2020-10-06 01:03:46,385 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-06 01:03:46,386 INFO L479 AbstractCegarLoop]: Abstraction has 104 states and 244 transitions. [2020-10-06 01:03:46,386 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-06 01:03:46,386 INFO L276 IsEmpty]: Start isEmpty. Operand 104 states and 244 transitions. [2020-10-06 01:03:46,387 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-10-06 01:03:46,387 INFO L414 BasicCegarLoop]: Found error trace [2020-10-06 01:03:46,387 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-06 01:03:46,387 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-06 01:03:46,387 INFO L427 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-06 01:03:46,388 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-06 01:03:46,388 INFO L82 PathProgramCache]: Analyzing trace with hash -1246852910, now seen corresponding path program 2 times [2020-10-06 01:03:46,398 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-06 01:03:46,398 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1570752824] [2020-10-06 01:03:46,398 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-06 01:03:46,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-06 01:03:46,473 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-06 01:03:46,473 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1570752824] [2020-10-06 01:03:46,474 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-06 01:03:46,474 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-06 01:03:46,474 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [953689234] [2020-10-06 01:03:46,474 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-06 01:03:46,476 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-06 01:03:46,478 INFO L258 McrAutomatonBuilder]: Finished intersection with 23 states and 31 transitions. [2020-10-06 01:03:46,478 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-06 01:03:46,511 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 4 conjuncts [2020-10-06 01:03:46,534 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-06 01:03:46,535 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-06 01:03:46,535 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-06 01:03:46,535 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-06 01:03:46,536 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-06 01:03:46,536 INFO L87 Difference]: Start difference. First operand 104 states and 244 transitions. Second operand 4 states. [2020-10-06 01:03:46,568 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-06 01:03:46,568 INFO L93 Difference]: Finished difference Result 127 states and 275 transitions. [2020-10-06 01:03:46,569 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-06 01:03:46,569 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 13 [2020-10-06 01:03:46,569 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-06 01:03:46,570 INFO L225 Difference]: With dead ends: 127 [2020-10-06 01:03:46,570 INFO L226 Difference]: Without dead ends: 87 [2020-10-06 01:03:46,571 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 8 SyntacticMatches, 1 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-06 01:03:46,571 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 87 states. [2020-10-06 01:03:46,574 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 87 to 87. [2020-10-06 01:03:46,574 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 87 states. [2020-10-06 01:03:46,575 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 87 states to 87 states and 183 transitions. [2020-10-06 01:03:46,575 INFO L78 Accepts]: Start accepts. Automaton has 87 states and 183 transitions. Word has length 13 [2020-10-06 01:03:46,576 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-06 01:03:46,576 INFO L479 AbstractCegarLoop]: Abstraction has 87 states and 183 transitions. [2020-10-06 01:03:46,576 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-06 01:03:46,576 INFO L276 IsEmpty]: Start isEmpty. Operand 87 states and 183 transitions. [2020-10-06 01:03:46,577 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-06 01:03:46,577 INFO L414 BasicCegarLoop]: Found error trace [2020-10-06 01:03:46,577 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-06 01:03:46,577 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-06 01:03:46,578 INFO L427 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-06 01:03:46,578 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-06 01:03:46,578 INFO L82 PathProgramCache]: Analyzing trace with hash 433937672, now seen corresponding path program 1 times [2020-10-06 01:03:46,579 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-06 01:03:46,580 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [103035841] [2020-10-06 01:03:46,580 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-06 01:03:46,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-06 01:03:46,644 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-06 01:03:46,644 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [103035841] [2020-10-06 01:03:46,645 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-06 01:03:46,645 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-06 01:03:46,645 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [950960613] [2020-10-06 01:03:46,645 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-06 01:03:46,647 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-06 01:03:46,655 INFO L258 McrAutomatonBuilder]: Finished intersection with 27 states and 38 transitions. [2020-10-06 01:03:46,655 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-06 01:03:46,710 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 1 new interpolants: [3211#(<= ~__unbuffered_cnt~0 0)] [2020-10-06 01:03:46,711 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-06 01:03:46,711 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-06 01:03:46,711 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-06 01:03:46,712 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-10-06 01:03:46,712 INFO L87 Difference]: Start difference. First operand 87 states and 183 transitions. Second operand 6 states. [2020-10-06 01:03:46,772 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-06 01:03:46,772 INFO L93 Difference]: Finished difference Result 90 states and 175 transitions. [2020-10-06 01:03:46,773 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-06 01:03:46,774 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 14 [2020-10-06 01:03:46,774 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-06 01:03:46,775 INFO L225 Difference]: With dead ends: 90 [2020-10-06 01:03:46,775 INFO L226 Difference]: Without dead ends: 65 [2020-10-06 01:03:46,776 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 9 SyntacticMatches, 2 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2020-10-06 01:03:46,777 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 65 states. [2020-10-06 01:03:46,780 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 65 to 65. [2020-10-06 01:03:46,781 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 65 states. [2020-10-06 01:03:46,781 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65 states to 65 states and 119 transitions. [2020-10-06 01:03:46,783 INFO L78 Accepts]: Start accepts. Automaton has 65 states and 119 transitions. Word has length 14 [2020-10-06 01:03:46,784 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-06 01:03:46,784 INFO L479 AbstractCegarLoop]: Abstraction has 65 states and 119 transitions. [2020-10-06 01:03:46,784 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-06 01:03:46,784 INFO L276 IsEmpty]: Start isEmpty. Operand 65 states and 119 transitions. [2020-10-06 01:03:46,789 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-10-06 01:03:46,789 INFO L414 BasicCegarLoop]: Found error trace [2020-10-06 01:03:46,789 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-06 01:03:46,789 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-06 01:03:46,790 INFO L427 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-06 01:03:46,790 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-06 01:03:46,790 INFO L82 PathProgramCache]: Analyzing trace with hash 567169455, now seen corresponding path program 1 times [2020-10-06 01:03:46,800 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-06 01:03:46,801 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1912595672] [2020-10-06 01:03:46,801 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-06 01:03:46,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-06 01:03:46,887 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-06 01:03:46,887 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1912595672] [2020-10-06 01:03:46,888 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-06 01:03:46,888 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-06 01:03:46,888 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [629843904] [2020-10-06 01:03:46,888 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-06 01:03:46,890 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-06 01:03:46,895 INFO L258 McrAutomatonBuilder]: Finished intersection with 27 states and 37 transitions. [2020-10-06 01:03:46,895 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-06 01:03:46,945 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 4 conjuncts [2020-10-06 01:03:46,979 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 1 new interpolants: [3440#(<= ~__unbuffered_cnt~0 0)] [2020-10-06 01:03:46,979 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-06 01:03:46,980 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-06 01:03:46,980 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-06 01:03:46,980 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-10-06 01:03:46,980 INFO L87 Difference]: Start difference. First operand 65 states and 119 transitions. Second operand 7 states. [2020-10-06 01:03:47,030 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-06 01:03:47,030 INFO L93 Difference]: Finished difference Result 62 states and 111 transitions. [2020-10-06 01:03:47,030 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-06 01:03:47,031 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 15 [2020-10-06 01:03:47,031 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-06 01:03:47,031 INFO L225 Difference]: With dead ends: 62 [2020-10-06 01:03:47,031 INFO L226 Difference]: Without dead ends: 54 [2020-10-06 01:03:47,032 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 7 SyntacticMatches, 3 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2020-10-06 01:03:47,033 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54 states. [2020-10-06 01:03:47,035 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54 to 54. [2020-10-06 01:03:47,035 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 54 states. [2020-10-06 01:03:47,036 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 97 transitions. [2020-10-06 01:03:47,036 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 97 transitions. Word has length 15 [2020-10-06 01:03:47,036 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-06 01:03:47,036 INFO L479 AbstractCegarLoop]: Abstraction has 54 states and 97 transitions. [2020-10-06 01:03:47,036 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-06 01:03:47,036 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 97 transitions. [2020-10-06 01:03:47,038 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-10-06 01:03:47,038 INFO L414 BasicCegarLoop]: Found error trace [2020-10-06 01:03:47,038 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-06 01:03:47,038 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-06 01:03:47,038 INFO L427 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-06 01:03:47,040 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-06 01:03:47,040 INFO L82 PathProgramCache]: Analyzing trace with hash -412776350, now seen corresponding path program 1 times [2020-10-06 01:03:47,042 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-06 01:03:47,043 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [282729142] [2020-10-06 01:03:47,043 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-06 01:03:47,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-06 01:03:47,103 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-06 01:03:47,104 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [282729142] [2020-10-06 01:03:47,104 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-06 01:03:47,104 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-06 01:03:47,105 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1185973957] [2020-10-06 01:03:47,105 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-06 01:03:47,107 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-06 01:03:47,111 INFO L258 McrAutomatonBuilder]: Finished intersection with 30 states and 41 transitions. [2020-10-06 01:03:47,111 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-06 01:03:47,136 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-06 01:03:47,136 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-06 01:03:47,136 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-06 01:03:47,137 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-06 01:03:47,137 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-06 01:03:47,137 INFO L87 Difference]: Start difference. First operand 54 states and 97 transitions. Second operand 4 states. [2020-10-06 01:03:47,153 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-06 01:03:47,153 INFO L93 Difference]: Finished difference Result 63 states and 110 transitions. [2020-10-06 01:03:47,154 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-06 01:03:47,154 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 17 [2020-10-06 01:03:47,154 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-06 01:03:47,155 INFO L225 Difference]: With dead ends: 63 [2020-10-06 01:03:47,155 INFO L226 Difference]: Without dead ends: 35 [2020-10-06 01:03:47,155 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-06 01:03:47,155 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2020-10-06 01:03:47,156 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 35. [2020-10-06 01:03:47,157 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2020-10-06 01:03:47,157 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 56 transitions. [2020-10-06 01:03:47,157 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 56 transitions. Word has length 17 [2020-10-06 01:03:47,157 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-06 01:03:47,157 INFO L479 AbstractCegarLoop]: Abstraction has 35 states and 56 transitions. [2020-10-06 01:03:47,157 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-06 01:03:47,158 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 56 transitions. [2020-10-06 01:03:47,158 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-10-06 01:03:47,158 INFO L414 BasicCegarLoop]: Found error trace [2020-10-06 01:03:47,158 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-06 01:03:47,158 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-06 01:03:47,159 INFO L427 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-06 01:03:47,159 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-06 01:03:47,159 INFO L82 PathProgramCache]: Analyzing trace with hash 361560856, now seen corresponding path program 2 times [2020-10-06 01:03:47,160 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-06 01:03:47,160 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1371899086] [2020-10-06 01:03:47,161 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-06 01:03:47,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-06 01:03:47,189 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-06 01:03:47,190 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1371899086] [2020-10-06 01:03:47,190 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-06 01:03:47,190 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-06 01:03:47,190 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [501462895] [2020-10-06 01:03:47,191 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-06 01:03:47,192 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-06 01:03:47,196 INFO L258 McrAutomatonBuilder]: Finished intersection with 26 states and 34 transitions. [2020-10-06 01:03:47,196 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-06 01:03:47,209 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-06 01:03:47,209 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-06 01:03:47,209 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-06 01:03:47,209 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-06 01:03:47,210 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-06 01:03:47,210 INFO L87 Difference]: Start difference. First operand 35 states and 56 transitions. Second operand 4 states. [2020-10-06 01:03:47,224 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-06 01:03:47,225 INFO L93 Difference]: Finished difference Result 48 states and 77 transitions. [2020-10-06 01:03:47,225 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-06 01:03:47,225 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 17 [2020-10-06 01:03:47,226 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-06 01:03:47,226 INFO L225 Difference]: With dead ends: 48 [2020-10-06 01:03:47,226 INFO L226 Difference]: Without dead ends: 30 [2020-10-06 01:03:47,226 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-06 01:03:47,227 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2020-10-06 01:03:47,227 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 30. [2020-10-06 01:03:47,228 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2020-10-06 01:03:47,228 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 44 transitions. [2020-10-06 01:03:47,228 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 44 transitions. Word has length 17 [2020-10-06 01:03:47,228 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-06 01:03:47,228 INFO L479 AbstractCegarLoop]: Abstraction has 30 states and 44 transitions. [2020-10-06 01:03:47,229 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-06 01:03:47,229 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 44 transitions. [2020-10-06 01:03:47,229 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-10-06 01:03:47,229 INFO L414 BasicCegarLoop]: Found error trace [2020-10-06 01:03:47,229 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-06 01:03:47,230 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-06 01:03:47,230 INFO L427 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-06 01:03:47,230 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-06 01:03:47,230 INFO L82 PathProgramCache]: Analyzing trace with hash -550831814, now seen corresponding path program 3 times [2020-10-06 01:03:47,231 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-06 01:03:47,232 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [528884173] [2020-10-06 01:03:47,232 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-06 01:03:47,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-06 01:03:47,262 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-06 01:03:47,263 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [528884173] [2020-10-06 01:03:47,263 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-06 01:03:47,263 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-06 01:03:47,263 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [2141705905] [2020-10-06 01:03:47,264 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-06 01:03:47,279 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-06 01:03:47,284 INFO L258 McrAutomatonBuilder]: Finished intersection with 24 states and 29 transitions. [2020-10-06 01:03:47,285 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-06 01:03:47,308 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-06 01:03:47,308 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-06 01:03:47,308 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-06 01:03:47,309 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-06 01:03:47,309 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-06 01:03:47,309 INFO L87 Difference]: Start difference. First operand 30 states and 44 transitions. Second operand 4 states. [2020-10-06 01:03:47,324 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-06 01:03:47,324 INFO L93 Difference]: Finished difference Result 29 states and 43 transitions. [2020-10-06 01:03:47,326 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-06 01:03:47,326 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 17 [2020-10-06 01:03:47,326 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-06 01:03:47,327 INFO L225 Difference]: With dead ends: 29 [2020-10-06 01:03:47,327 INFO L226 Difference]: Without dead ends: 0 [2020-10-06 01:03:47,327 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-06 01:03:47,327 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-10-06 01:03:47,328 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-10-06 01:03:47,328 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-10-06 01:03:47,328 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-10-06 01:03:47,328 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 17 [2020-10-06 01:03:47,328 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-06 01:03:47,328 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-10-06 01:03:47,329 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-06 01:03:47,329 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-10-06 01:03:47,329 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-10-06 01:03:47,329 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-06 01:03:47,333 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 06.10 01:03:47 BasicIcfg [2020-10-06 01:03:47,333 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-06 01:03:47,335 INFO L168 Benchmark]: Toolchain (without parser) took 4835.76 ms. Allocated memory was 147.3 MB in the beginning and 279.4 MB in the end (delta: 132.1 MB). Free memory was 101.7 MB in the beginning and 238.6 MB in the end (delta: -136.9 MB). There was no memory consumed. Max. memory is 7.1 GB. [2020-10-06 01:03:47,336 INFO L168 Benchmark]: CDTParser took 0.22 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: 209.8 kB). Peak memory consumption was 209.8 kB. Max. memory is 7.1 GB. [2020-10-06 01:03:47,337 INFO L168 Benchmark]: CACSL2BoogieTranslator took 676.42 ms. Allocated memory was 147.3 MB in the beginning and 203.9 MB in the end (delta: 56.6 MB). Free memory was 101.5 MB in the beginning and 160.6 MB in the end (delta: -59.1 MB). Peak memory consumption was 21.9 MB. Max. memory is 7.1 GB. [2020-10-06 01:03:47,337 INFO L168 Benchmark]: Boogie Procedure Inliner took 50.54 ms. Allocated memory is still 203.9 MB. Free memory was 160.6 MB in the beginning and 158.7 MB in the end (delta: 1.9 MB). Peak memory consumption was 1.9 MB. Max. memory is 7.1 GB. [2020-10-06 01:03:47,338 INFO L168 Benchmark]: Boogie Preprocessor took 28.62 ms. Allocated memory is still 203.9 MB. Free memory was 158.7 MB in the beginning and 156.7 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 7.1 GB. [2020-10-06 01:03:47,339 INFO L168 Benchmark]: RCFGBuilder took 466.38 ms. Allocated memory is still 203.9 MB. Free memory was 156.7 MB in the beginning and 134.9 MB in the end (delta: 21.7 MB). Peak memory consumption was 21.7 MB. Max. memory is 7.1 GB. [2020-10-06 01:03:47,339 INFO L168 Benchmark]: TraceAbstraction took 3608.20 ms. Allocated memory was 203.9 MB in the beginning and 279.4 MB in the end (delta: 75.5 MB). Free memory was 134.3 MB in the beginning and 238.6 MB in the end (delta: -104.3 MB). There was no memory consumed. Max. memory is 7.1 GB. [2020-10-06 01:03:47,343 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.22 ms. Allocated memory is still 147.3 MB. Free memory was 122.0 MB in the beginning and 121.8 MB in the end (delta: 209.8 kB). Peak memory consumption was 209.8 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 676.42 ms. Allocated memory was 147.3 MB in the beginning and 203.9 MB in the end (delta: 56.6 MB). Free memory was 101.5 MB in the beginning and 160.6 MB in the end (delta: -59.1 MB). Peak memory consumption was 21.9 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 50.54 ms. Allocated memory is still 203.9 MB. Free memory was 160.6 MB in the beginning and 158.7 MB in the end (delta: 1.9 MB). Peak memory consumption was 1.9 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 28.62 ms. Allocated memory is still 203.9 MB. Free memory was 158.7 MB in the beginning and 156.7 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 7.1 GB. * RCFGBuilder took 466.38 ms. Allocated memory is still 203.9 MB. Free memory was 156.7 MB in the beginning and 134.9 MB in the end (delta: 21.7 MB). Peak memory consumption was 21.7 MB. Max. memory is 7.1 GB. * TraceAbstraction took 3608.20 ms. Allocated memory was 203.9 MB in the beginning and 279.4 MB in the end (delta: 75.5 MB). Free memory was 134.3 MB in the beginning and 238.6 MB in the end (delta: -104.3 MB). There was no memory consumed. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks LbeTime: 1.5s, 78 ProgramPointsBefore, 31 ProgramPointsAfterwards, 70 TransitionsBefore, 22 TransitionsAfterwards, 1260 CoEnabledTransitionPairs, 7 FixpointIterations, 14 TrivialSequentialCompositions, 37 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 8 ConcurrentYvCompositions, 1 ChoiceCompositions, 657 VarBasedMoverChecksPositive, 26 VarBasedMoverChecksNegative, 0 SemBasedMoverChecksPositive, 0 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.0s, 0 MoverChecksTotal, 2700 CheckedPairsTotal, 59 TotalNumberOfCompositions - PositiveResult [Line: 7]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 69 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 3.4s, OverallIterations: 11, TraceHistogramMax: 1, AutomataDifference: 0.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 1.5s, HoareTripleCheckerStatistics: 214 SDtfs, 132 SDslu, 261 SDs, 0 SdLazy, 142 SolverSat, 23 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 119 GetRequests, 81 SyntacticMatches, 6 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=298occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 11 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.4s InterpolantComputationTime, 146 NumberOfCodeBlocks, 146 NumberOfCodeBlocksAsserted, 11 NumberOfCheckSat, 135 ConstructedInterpolants, 0 QuantifiedInterpolants, 4725 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 11 InterpolantComputations, 11 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...