/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/safe020_pso.oepc.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-60655ea [2020-09-16 00:01:55,590 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-16 00:01:55,595 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-16 00:01:55,638 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-16 00:01:55,639 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-16 00:01:55,647 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-16 00:01:55,651 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-16 00:01:55,655 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-16 00:01:55,658 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-16 00:01:55,661 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-16 00:01:55,663 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-16 00:01:55,664 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-16 00:01:55,664 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-16 00:01:55,667 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-16 00:01:55,670 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-16 00:01:55,672 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-16 00:01:55,673 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-16 00:01:55,675 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-16 00:01:55,676 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-16 00:01:55,685 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-16 00:01:55,687 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-16 00:01:55,688 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-16 00:01:55,690 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-16 00:01:55,691 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-16 00:01:55,704 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-09-16 00:01:55,712 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-16 00:01:55,713 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-16 00:01:55,714 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-16 00:01:55,715 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-16 00:01:55,716 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-16 00:01:55,716 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-16 00:01:55,717 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-16 00:01:55,717 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-16 00:01:55,718 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-16 00:01:55,719 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-16 00:01:55,719 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-16 00:01:55,720 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/mcr/svcomp-Reach-32bit-Automizer_Default-noMmResRef-FA-McrAutomaton-WP.epf [2020-09-16 00:01:55,746 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-16 00:01:55,746 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-16 00:01:55,748 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-16 00:01:55,748 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-16 00:01:55,748 INFO L138 SettingsManager]: * Use SBE=true [2020-09-16 00:01:55,749 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-16 00:01:55,749 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-16 00:01:55,749 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-16 00:01:55,749 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-16 00:01:55,749 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-16 00:01:55,750 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-16 00:01:55,750 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-16 00:01:55,750 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-16 00:01:55,750 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-16 00:01:55,750 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-16 00:01:55,751 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-16 00:01:55,751 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-16 00:01:55,751 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-16 00:01:55,751 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-16 00:01:55,751 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-16 00:01:55,752 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-16 00:01:55,752 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-16 00:01:55,752 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-16 00:01:55,752 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=Craig_NestedInterpolation [2020-09-16 00:01:55,752 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-16 00:01:55,753 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-16 00:01:55,753 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-16 00:01:55,753 INFO L138 SettingsManager]: * Override the interpolant automaton setting of the refinement strategy=true [2020-09-16 00:01:55,753 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=VARIABLE_BASED_MOVER_CHECK [2020-09-16 00:01:55,753 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-16 00:01:55,754 INFO L138 SettingsManager]: * Interpolant automaton=MCR [2020-09-16 00:01:56,195 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-16 00:01:56,220 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-16 00:01:56,223 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-16 00:01:56,227 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-16 00:01:56,228 INFO L275 PluginConnector]: CDTParser initialized [2020-09-16 00:01:56,230 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe020_pso.oepc.i [2020-09-16 00:01:56,305 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/dd26352f3/186fcad325804485a93910e3bd9abdcd/FLAG7fa9f419e [2020-09-16 00:01:56,983 INFO L306 CDTParser]: Found 1 translation units. [2020-09-16 00:01:56,984 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/pthread-wmm/safe020_pso.oepc.i [2020-09-16 00:01:57,008 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/dd26352f3/186fcad325804485a93910e3bd9abdcd/FLAG7fa9f419e [2020-09-16 00:01:57,219 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/dd26352f3/186fcad325804485a93910e3bd9abdcd [2020-09-16 00:01:57,232 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-16 00:01:57,237 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2020-09-16 00:01:57,239 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-16 00:01:57,239 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-16 00:01:57,245 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-16 00:01:57,247 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.09 12:01:57" (1/1) ... [2020-09-16 00:01:57,251 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@dc0a296 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 12:01:57, skipping insertion in model container [2020-09-16 00:01:57,251 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.09 12:01:57" (1/1) ... [2020-09-16 00:01:57,261 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-16 00:01:57,309 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-16 00:01:57,866 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-16 00:01:57,889 INFO L203 MainTranslator]: Completed pre-run [2020-09-16 00:01:57,976 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-16 00:01:58,056 INFO L208 MainTranslator]: Completed translation [2020-09-16 00:01:58,057 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 12:01:58 WrapperNode [2020-09-16 00:01:58,057 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-16 00:01:58,058 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-09-16 00:01:58,058 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-09-16 00:01:58,059 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-09-16 00:01:58,071 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 12:01:58" (1/1) ... [2020-09-16 00:01:58,092 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 12:01:58" (1/1) ... [2020-09-16 00:01:58,122 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-09-16 00:01:58,122 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-16 00:01:58,122 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-16 00:01:58,123 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-16 00:01:58,135 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 12:01:58" (1/1) ... [2020-09-16 00:01:58,136 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 12:01:58" (1/1) ... [2020-09-16 00:01:58,139 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 12:01:58" (1/1) ... [2020-09-16 00:01:58,139 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 12:01:58" (1/1) ... [2020-09-16 00:01:58,147 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 12:01:58" (1/1) ... [2020-09-16 00:01:58,150 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 12:01:58" (1/1) ... [2020-09-16 00:01:58,153 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 12:01:58" (1/1) ... [2020-09-16 00:01:58,157 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-16 00:01:58,157 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-16 00:01:58,158 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-16 00:01:58,158 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-16 00:01:58,159 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 12:01:58" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-16 00:01:58,255 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-09-16 00:01:58,255 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2020-09-16 00:01:58,255 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-09-16 00:01:58,256 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-09-16 00:01:58,256 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2020-09-16 00:01:58,256 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2020-09-16 00:01:58,256 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2020-09-16 00:01:58,256 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2020-09-16 00:01:58,257 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2020-09-16 00:01:58,257 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2020-09-16 00:01:58,257 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2020-09-16 00:01:58,257 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-16 00:01:58,257 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-16 00:01:58,260 WARN L205 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2020-09-16 00:01:58,705 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-16 00:01:58,706 INFO L295 CfgBuilder]: Removed 8 assume(true) statements. [2020-09-16 00:01:58,711 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.09 12:01:58 BoogieIcfgContainer [2020-09-16 00:01:58,712 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-16 00:01:58,713 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-16 00:01:58,714 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-16 00:01:58,718 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-16 00:01:58,718 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.09 12:01:57" (1/3) ... [2020-09-16 00:01:58,719 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@466d065a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.09 12:01:58, skipping insertion in model container [2020-09-16 00:01:58,720 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 12:01:58" (2/3) ... [2020-09-16 00:01:58,720 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@466d065a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.09 12:01:58, skipping insertion in model container [2020-09-16 00:01:58,720 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.09 12:01:58" (3/3) ... [2020-09-16 00:01:58,723 INFO L109 eAbstractionObserver]: Analyzing ICFG safe020_pso.oepc.i [2020-09-16 00:01:58,736 WARN L146 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2020-09-16 00:01:58,737 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-16 00:01:58,747 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-16 00:01:58,748 INFO L340 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2020-09-16 00:01:58,779 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 00:01:58,779 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 00:01:58,780 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 00:01:58,780 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 00:01:58,780 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 00:01:58,781 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 00:01:58,781 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 00:01:58,782 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 00:01:58,782 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 00:01:58,782 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 00:01:58,782 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 00:01:58,783 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 00:01:58,783 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 00:01:58,783 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 00:01:58,784 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 00:01:58,784 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 00:01:58,784 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 00:01:58,785 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 00:01:58,789 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 00:01:58,790 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 00:01:58,790 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 00:01:58,791 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 00:01:58,800 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 00:01:58,800 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 00:01:58,801 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 00:01:58,801 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 00:01:58,806 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 00:01:58,807 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 00:01:58,807 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 00:01:58,807 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 00:01:58,840 INFO L251 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2020-09-16 00:01:58,872 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-16 00:01:58,872 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-16 00:01:58,872 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-16 00:01:58,872 INFO L378 AbstractCegarLoop]: Backedges is MCR [2020-09-16 00:01:58,873 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-16 00:01:58,873 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-16 00:01:58,874 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-16 00:01:58,874 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-16 00:01:58,892 INFO L152 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 76 places, 68 transitions, 151 flow [2020-09-16 00:01:58,895 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 76 places, 68 transitions, 151 flow [2020-09-16 00:01:58,949 INFO L129 PetriNetUnfolder]: 2/65 cut-off events. [2020-09-16 00:01:58,950 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-09-16 00:01:58,955 INFO L80 FinitePrefix]: Finished finitePrefix Result has 75 conditions, 65 events. 2/65 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 45 event pairs, 0 based on Foata normal form. 0/62 useless extension candidates. Maximal degree in co-relation 54. Up to 2 conditions per place. [2020-09-16 00:01:58,959 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 76 places, 68 transitions, 151 flow [2020-09-16 00:01:58,980 INFO L129 PetriNetUnfolder]: 2/65 cut-off events. [2020-09-16 00:01:58,980 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-09-16 00:01:58,981 INFO L80 FinitePrefix]: Finished finitePrefix Result has 75 conditions, 65 events. 2/65 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 45 event pairs, 0 based on Foata normal form. 0/62 useless extension candidates. Maximal degree in co-relation 54. Up to 2 conditions per place. [2020-09-16 00:01:58,983 INFO L158 etLargeBlockEncoding]: Number of co-enabled transitions 1178 [2020-09-16 00:01:58,985 INFO L182 etLargeBlockEncoding]: Variable Check. [2020-09-16 00:02:00,406 INFO L206 etLargeBlockEncoding]: Checked pairs total: 2244 [2020-09-16 00:02:00,407 INFO L214 etLargeBlockEncoding]: Total number of compositions: 56 [2020-09-16 00:02:00,412 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 31 places, 22 transitions, 59 flow [2020-09-16 00:02:00,440 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 274 states. [2020-09-16 00:02:00,443 INFO L276 IsEmpty]: Start isEmpty. Operand 274 states. [2020-09-16 00:02:00,453 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-09-16 00:02:00,453 INFO L414 BasicCegarLoop]: Found error trace [2020-09-16 00:02:00,455 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-09-16 00:02:00,455 INFO L427 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-16 00:02:00,462 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-16 00:02:00,463 INFO L82 PathProgramCache]: Analyzing trace with hash 278619754, now seen corresponding path program 1 times [2020-09-16 00:02:00,486 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-16 00:02:00,486 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1544954127] [2020-09-16 00:02:00,487 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-16 00:02:00,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-16 00:02:00,696 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-16 00:02:00,697 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1544954127] [2020-09-16 00:02:00,698 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-16 00:02:00,699 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-09-16 00:02:00,699 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1737444153] [2020-09-16 00:02:00,701 INFO L216 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-09-16 00:02:00,704 INFO L271 McrAutomatonBuilder]: Started intersection. [2020-09-16 00:02:00,721 INFO L274 McrAutomatonBuilder]: Finished intersection with 9 states and 8 transitions. [2020-09-16 00:02:00,722 INFO L299 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-09-16 00:02:00,724 INFO L399 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-09-16 00:02:00,725 INFO L459 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-09-16 00:02:00,729 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-16 00:02:00,749 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-09-16 00:02:00,750 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-09-16 00:02:00,752 INFO L87 Difference]: Start difference. First operand 274 states. Second operand 2 states. [2020-09-16 00:02:00,774 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-16 00:02:00,774 INFO L93 Difference]: Finished difference Result 274 states and 786 transitions. [2020-09-16 00:02:00,775 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-09-16 00:02:00,776 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 8 [2020-09-16 00:02:00,777 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-16 00:02:00,795 INFO L225 Difference]: With dead ends: 274 [2020-09-16 00:02:00,795 INFO L226 Difference]: Without dead ends: 226 [2020-09-16 00:02:00,797 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-09-16 00:02:00,822 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 226 states. [2020-09-16 00:02:00,863 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 226 to 226. [2020-09-16 00:02:00,865 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 226 states. [2020-09-16 00:02:00,870 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 226 states to 226 states and 634 transitions. [2020-09-16 00:02:00,872 INFO L78 Accepts]: Start accepts. Automaton has 226 states and 634 transitions. Word has length 8 [2020-09-16 00:02:00,874 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-16 00:02:00,874 INFO L479 AbstractCegarLoop]: Abstraction has 226 states and 634 transitions. [2020-09-16 00:02:00,874 INFO L480 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-09-16 00:02:00,874 INFO L276 IsEmpty]: Start isEmpty. Operand 226 states and 634 transitions. [2020-09-16 00:02:00,875 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-09-16 00:02:00,875 INFO L414 BasicCegarLoop]: Found error trace [2020-09-16 00:02:00,876 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-16 00:02:00,876 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-16 00:02:00,876 INFO L427 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-16 00:02:00,877 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-16 00:02:00,877 INFO L82 PathProgramCache]: Analyzing trace with hash 47263938, now seen corresponding path program 1 times [2020-09-16 00:02:00,877 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-16 00:02:00,877 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1867331499] [2020-09-16 00:02:00,878 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-16 00:02:00,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-16 00:02:01,079 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-16 00:02:01,079 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1867331499] [2020-09-16 00:02:01,080 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-16 00:02:01,080 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-09-16 00:02:01,080 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [528953629] [2020-09-16 00:02:01,080 INFO L216 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-09-16 00:02:01,082 INFO L271 McrAutomatonBuilder]: Started intersection. [2020-09-16 00:02:01,089 INFO L274 McrAutomatonBuilder]: Finished intersection with 10 states and 9 transitions. [2020-09-16 00:02:01,090 INFO L299 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-09-16 00:02:01,090 INFO L399 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-09-16 00:02:01,092 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-16 00:02:01,093 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-16 00:02:01,093 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-16 00:02:01,093 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-16 00:02:01,094 INFO L87 Difference]: Start difference. First operand 226 states and 634 transitions. Second operand 4 states. [2020-09-16 00:02:01,148 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-16 00:02:01,148 INFO L93 Difference]: Finished difference Result 262 states and 700 transitions. [2020-09-16 00:02:01,150 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-16 00:02:01,150 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 9 [2020-09-16 00:02:01,150 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-16 00:02:01,153 INFO L225 Difference]: With dead ends: 262 [2020-09-16 00:02:01,154 INFO L226 Difference]: Without dead ends: 214 [2020-09-16 00:02:01,155 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-09-16 00:02:01,160 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 214 states. [2020-09-16 00:02:01,175 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 214 to 214. [2020-09-16 00:02:01,175 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 214 states. [2020-09-16 00:02:01,179 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 214 states to 214 states and 590 transitions. [2020-09-16 00:02:01,180 INFO L78 Accepts]: Start accepts. Automaton has 214 states and 590 transitions. Word has length 9 [2020-09-16 00:02:01,180 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-16 00:02:01,180 INFO L479 AbstractCegarLoop]: Abstraction has 214 states and 590 transitions. [2020-09-16 00:02:01,180 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-16 00:02:01,180 INFO L276 IsEmpty]: Start isEmpty. Operand 214 states and 590 transitions. [2020-09-16 00:02:01,183 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-09-16 00:02:01,183 INFO L414 BasicCegarLoop]: Found error trace [2020-09-16 00:02:01,183 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-16 00:02:01,184 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-16 00:02:01,184 INFO L427 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-16 00:02:01,184 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-16 00:02:01,184 INFO L82 PathProgramCache]: Analyzing trace with hash 984763373, now seen corresponding path program 1 times [2020-09-16 00:02:01,184 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-16 00:02:01,185 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1704982741] [2020-09-16 00:02:01,185 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-16 00:02:01,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-16 00:02:01,314 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-16 00:02:01,315 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1704982741] [2020-09-16 00:02:01,315 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-16 00:02:01,315 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-16 00:02:01,315 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1533141482] [2020-09-16 00:02:01,316 INFO L216 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-09-16 00:02:01,316 INFO L271 McrAutomatonBuilder]: Started intersection. [2020-09-16 00:02:01,318 INFO L274 McrAutomatonBuilder]: Finished intersection with 16 states and 20 transitions. [2020-09-16 00:02:01,319 INFO L299 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-09-16 00:02:01,368 INFO L399 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-09-16 00:02:01,368 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-16 00:02:01,368 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-16 00:02:01,369 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-16 00:02:01,369 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-16 00:02:01,369 INFO L87 Difference]: Start difference. First operand 214 states and 590 transitions. Second operand 5 states. [2020-09-16 00:02:01,451 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-16 00:02:01,451 INFO L93 Difference]: Finished difference Result 232 states and 614 transitions. [2020-09-16 00:02:01,452 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-09-16 00:02:01,452 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 10 [2020-09-16 00:02:01,452 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-16 00:02:01,454 INFO L225 Difference]: With dead ends: 232 [2020-09-16 00:02:01,454 INFO L226 Difference]: Without dead ends: 196 [2020-09-16 00:02:01,455 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 4 SyntacticMatches, 1 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-09-16 00:02:01,459 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 196 states. [2020-09-16 00:02:01,471 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 196 to 196. [2020-09-16 00:02:01,471 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 196 states. [2020-09-16 00:02:01,472 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 196 states to 196 states and 530 transitions. [2020-09-16 00:02:01,473 INFO L78 Accepts]: Start accepts. Automaton has 196 states and 530 transitions. Word has length 10 [2020-09-16 00:02:01,473 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-16 00:02:01,473 INFO L479 AbstractCegarLoop]: Abstraction has 196 states and 530 transitions. [2020-09-16 00:02:01,473 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-16 00:02:01,473 INFO L276 IsEmpty]: Start isEmpty. Operand 196 states and 530 transitions. [2020-09-16 00:02:01,475 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-09-16 00:02:01,475 INFO L414 BasicCegarLoop]: Found error trace [2020-09-16 00:02:01,475 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-16 00:02:01,475 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-16 00:02:01,475 INFO L427 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-16 00:02:01,476 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-16 00:02:01,476 INFO L82 PathProgramCache]: Analyzing trace with hash 462854661, now seen corresponding path program 1 times [2020-09-16 00:02:01,476 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-16 00:02:01,477 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [579981049] [2020-09-16 00:02:01,477 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-16 00:02:01,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-16 00:02:01,577 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-16 00:02:01,578 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [579981049] [2020-09-16 00:02:01,578 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-16 00:02:01,578 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-16 00:02:01,578 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1454061585] [2020-09-16 00:02:01,579 INFO L216 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-09-16 00:02:01,580 INFO L271 McrAutomatonBuilder]: Started intersection. [2020-09-16 00:02:01,582 INFO L274 McrAutomatonBuilder]: Finished intersection with 20 states and 28 transitions. [2020-09-16 00:02:01,582 INFO L299 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-09-16 00:02:01,634 INFO L399 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-09-16 00:02:01,634 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-16 00:02:01,635 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-16 00:02:01,635 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-16 00:02:01,635 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-09-16 00:02:01,635 INFO L87 Difference]: Start difference. First operand 196 states and 530 transitions. Second operand 6 states. [2020-09-16 00:02:01,767 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-16 00:02:01,768 INFO L93 Difference]: Finished difference Result 255 states and 672 transitions. [2020-09-16 00:02:01,768 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-09-16 00:02:01,768 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 11 [2020-09-16 00:02:01,769 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-16 00:02:01,770 INFO L225 Difference]: With dead ends: 255 [2020-09-16 00:02:01,770 INFO L226 Difference]: Without dead ends: 150 [2020-09-16 00:02:01,771 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 7 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=41, Invalid=69, Unknown=0, NotChecked=0, Total=110 [2020-09-16 00:02:01,772 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 150 states. [2020-09-16 00:02:01,779 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 150 to 150. [2020-09-16 00:02:01,780 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 150 states. [2020-09-16 00:02:01,781 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 150 states to 150 states and 378 transitions. [2020-09-16 00:02:01,781 INFO L78 Accepts]: Start accepts. Automaton has 150 states and 378 transitions. Word has length 11 [2020-09-16 00:02:01,781 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-16 00:02:01,781 INFO L479 AbstractCegarLoop]: Abstraction has 150 states and 378 transitions. [2020-09-16 00:02:01,781 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-09-16 00:02:01,782 INFO L276 IsEmpty]: Start isEmpty. Operand 150 states and 378 transitions. [2020-09-16 00:02:01,783 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-09-16 00:02:01,783 INFO L414 BasicCegarLoop]: Found error trace [2020-09-16 00:02:01,783 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-16 00:02:01,783 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-16 00:02:01,784 INFO L427 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-16 00:02:01,784 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-16 00:02:01,784 INFO L82 PathProgramCache]: Analyzing trace with hash 266026162, now seen corresponding path program 1 times [2020-09-16 00:02:01,784 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-16 00:02:01,785 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [555864653] [2020-09-16 00:02:01,785 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-16 00:02:01,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-16 00:02:01,876 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-16 00:02:01,877 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [555864653] [2020-09-16 00:02:01,877 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-16 00:02:01,877 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-16 00:02:01,878 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [72940613] [2020-09-16 00:02:01,878 INFO L216 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-09-16 00:02:01,879 INFO L271 McrAutomatonBuilder]: Started intersection. [2020-09-16 00:02:01,882 INFO L274 McrAutomatonBuilder]: Finished intersection with 28 states and 46 transitions. [2020-09-16 00:02:01,883 INFO L299 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-09-16 00:02:01,914 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 4 conjuncts [2020-09-16 00:02:01,981 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 4 conjuncts [2020-09-16 00:02:02,014 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 4 conjuncts [2020-09-16 00:02:02,038 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 4 conjuncts [2020-09-16 00:02:02,068 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 4 conjuncts [2020-09-16 00:02:02,094 INFO L399 McrAutomatonBuilder]: Construction finished. MCR generated 1 new interpolants: [3259#(not (= 3 ~__unbuffered_cnt~0))] [2020-09-16 00:02:02,094 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-16 00:02:02,094 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-16 00:02:02,094 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-16 00:02:02,095 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-16 00:02:02,095 INFO L87 Difference]: Start difference. First operand 150 states and 378 transitions. Second operand 5 states. [2020-09-16 00:02:02,151 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-16 00:02:02,152 INFO L93 Difference]: Finished difference Result 128 states and 285 transitions. [2020-09-16 00:02:02,152 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-09-16 00:02:02,152 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 12 [2020-09-16 00:02:02,152 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-16 00:02:02,153 INFO L225 Difference]: With dead ends: 128 [2020-09-16 00:02:02,153 INFO L226 Difference]: Without dead ends: 92 [2020-09-16 00:02:02,154 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 12 SyntacticMatches, 3 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-09-16 00:02:02,155 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 92 states. [2020-09-16 00:02:02,158 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 92 to 92. [2020-09-16 00:02:02,158 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 92 states. [2020-09-16 00:02:02,158 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 92 states to 92 states and 186 transitions. [2020-09-16 00:02:02,159 INFO L78 Accepts]: Start accepts. Automaton has 92 states and 186 transitions. Word has length 12 [2020-09-16 00:02:02,159 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-16 00:02:02,159 INFO L479 AbstractCegarLoop]: Abstraction has 92 states and 186 transitions. [2020-09-16 00:02:02,159 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-16 00:02:02,159 INFO L276 IsEmpty]: Start isEmpty. Operand 92 states and 186 transitions. [2020-09-16 00:02:02,160 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-09-16 00:02:02,160 INFO L414 BasicCegarLoop]: Found error trace [2020-09-16 00:02:02,161 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-16 00:02:02,161 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-16 00:02:02,161 INFO L427 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-16 00:02:02,161 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-16 00:02:02,161 INFO L82 PathProgramCache]: Analyzing trace with hash -228576461, now seen corresponding path program 1 times [2020-09-16 00:02:02,162 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-16 00:02:02,162 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [340412408] [2020-09-16 00:02:02,162 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-16 00:02:02,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-16 00:02:02,227 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-16 00:02:02,227 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [340412408] [2020-09-16 00:02:02,228 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-16 00:02:02,228 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-16 00:02:02,228 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1925223424] [2020-09-16 00:02:02,228 INFO L216 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-09-16 00:02:02,230 INFO L271 McrAutomatonBuilder]: Started intersection. [2020-09-16 00:02:02,232 INFO L274 McrAutomatonBuilder]: Finished intersection with 21 states and 26 transitions. [2020-09-16 00:02:02,232 INFO L299 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-09-16 00:02:02,241 INFO L399 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-09-16 00:02:02,241 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-16 00:02:02,241 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-16 00:02:02,242 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-16 00:02:02,242 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-16 00:02:02,242 INFO L87 Difference]: Start difference. First operand 92 states and 186 transitions. Second operand 4 states. [2020-09-16 00:02:02,264 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-16 00:02:02,265 INFO L93 Difference]: Finished difference Result 120 states and 228 transitions. [2020-09-16 00:02:02,265 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-16 00:02:02,265 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 14 [2020-09-16 00:02:02,266 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-16 00:02:02,266 INFO L225 Difference]: With dead ends: 120 [2020-09-16 00:02:02,266 INFO L226 Difference]: Without dead ends: 94 [2020-09-16 00:02:02,267 INFO L675 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 [2020-09-16 00:02:02,268 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 94 states. [2020-09-16 00:02:02,270 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 94 to 90. [2020-09-16 00:02:02,271 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 90 states. [2020-09-16 00:02:02,271 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 90 states to 90 states and 175 transitions. [2020-09-16 00:02:02,272 INFO L78 Accepts]: Start accepts. Automaton has 90 states and 175 transitions. Word has length 14 [2020-09-16 00:02:02,272 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-16 00:02:02,272 INFO L479 AbstractCegarLoop]: Abstraction has 90 states and 175 transitions. [2020-09-16 00:02:02,272 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-16 00:02:02,272 INFO L276 IsEmpty]: Start isEmpty. Operand 90 states and 175 transitions. [2020-09-16 00:02:02,273 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-09-16 00:02:02,273 INFO L414 BasicCegarLoop]: Found error trace [2020-09-16 00:02:02,274 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-16 00:02:02,274 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-09-16 00:02:02,274 INFO L427 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-16 00:02:02,274 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-16 00:02:02,275 INFO L82 PathProgramCache]: Analyzing trace with hash -1357686433, now seen corresponding path program 1 times [2020-09-16 00:02:02,275 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-16 00:02:02,275 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [358718193] [2020-09-16 00:02:02,275 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-16 00:02:02,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-16 00:02:02,350 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-16 00:02:02,351 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [358718193] [2020-09-16 00:02:02,351 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-16 00:02:02,351 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-16 00:02:02,352 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [957133599] [2020-09-16 00:02:02,352 INFO L216 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-09-16 00:02:02,354 INFO L271 McrAutomatonBuilder]: Started intersection. [2020-09-16 00:02:02,359 INFO L274 McrAutomatonBuilder]: Finished intersection with 44 states and 79 transitions. [2020-09-16 00:02:02,360 INFO L299 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-09-16 00:02:02,439 INFO L399 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-09-16 00:02:02,439 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-16 00:02:02,440 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-16 00:02:02,440 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-16 00:02:02,440 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-09-16 00:02:02,440 INFO L87 Difference]: Start difference. First operand 90 states and 175 transitions. Second operand 5 states. [2020-09-16 00:02:02,473 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-16 00:02:02,473 INFO L93 Difference]: Finished difference Result 113 states and 209 transitions. [2020-09-16 00:02:02,474 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-16 00:02:02,474 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 15 [2020-09-16 00:02:02,474 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-16 00:02:02,475 INFO L225 Difference]: With dead ends: 113 [2020-09-16 00:02:02,475 INFO L226 Difference]: Without dead ends: 70 [2020-09-16 00:02:02,475 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-09-16 00:02:02,476 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 70 states. [2020-09-16 00:02:02,478 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 70 to 68. [2020-09-16 00:02:02,478 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 68 states. [2020-09-16 00:02:02,478 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 68 states to 68 states and 115 transitions. [2020-09-16 00:02:02,479 INFO L78 Accepts]: Start accepts. Automaton has 68 states and 115 transitions. Word has length 15 [2020-09-16 00:02:02,479 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-16 00:02:02,479 INFO L479 AbstractCegarLoop]: Abstraction has 68 states and 115 transitions. [2020-09-16 00:02:02,479 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-16 00:02:02,479 INFO L276 IsEmpty]: Start isEmpty. Operand 68 states and 115 transitions. [2020-09-16 00:02:02,480 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-09-16 00:02:02,480 INFO L414 BasicCegarLoop]: Found error trace [2020-09-16 00:02:02,480 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-16 00:02:02,481 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-09-16 00:02:02,481 INFO L427 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-16 00:02:02,481 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-16 00:02:02,481 INFO L82 PathProgramCache]: Analyzing trace with hash 1504039886, now seen corresponding path program 1 times [2020-09-16 00:02:02,482 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-16 00:02:02,482 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1148408216] [2020-09-16 00:02:02,482 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-16 00:02:02,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-16 00:02:02,594 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-16 00:02:02,595 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1148408216] [2020-09-16 00:02:02,595 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-16 00:02:02,595 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-16 00:02:02,596 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [891910679] [2020-09-16 00:02:02,596 INFO L216 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-09-16 00:02:02,598 INFO L271 McrAutomatonBuilder]: Started intersection. [2020-09-16 00:02:02,603 INFO L274 McrAutomatonBuilder]: Finished intersection with 38 states and 63 transitions. [2020-09-16 00:02:02,604 INFO L299 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-09-16 00:02:02,628 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 4 conjuncts [2020-09-16 00:02:02,726 INFO L399 McrAutomatonBuilder]: Construction finished. MCR generated 4 new interpolants: [4148#(not (= 3 ~__unbuffered_cnt~0)), 4149#(not (= ~__unbuffered_cnt~0 2)), 4150#(not (= ~__unbuffered_cnt~0 1)), 4151#(<= ~__unbuffered_cnt~0 0)] [2020-09-16 00:02:02,726 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-09-16 00:02:02,727 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-16 00:02:02,727 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-09-16 00:02:02,727 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2020-09-16 00:02:02,727 INFO L87 Difference]: Start difference. First operand 68 states and 115 transitions. Second operand 10 states. [2020-09-16 00:02:02,766 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-16 00:02:02,766 INFO L93 Difference]: Finished difference Result 58 states and 100 transitions. [2020-09-16 00:02:02,767 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-16 00:02:02,767 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 15 [2020-09-16 00:02:02,767 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-16 00:02:02,767 INFO L225 Difference]: With dead ends: 58 [2020-09-16 00:02:02,767 INFO L226 Difference]: Without dead ends: 0 [2020-09-16 00:02:02,768 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=37, Invalid=73, Unknown=0, NotChecked=0, Total=110 [2020-09-16 00:02:02,768 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-09-16 00:02:02,768 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-09-16 00:02:02,768 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-09-16 00:02:02,769 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-09-16 00:02:02,769 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 15 [2020-09-16 00:02:02,769 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-16 00:02:02,769 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-09-16 00:02:02,769 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-09-16 00:02:02,769 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-09-16 00:02:02,770 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-09-16 00:02:02,770 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-09-16 00:02:02,775 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 16.09 12:02:02 BasicIcfg [2020-09-16 00:02:02,775 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-09-16 00:02:02,787 INFO L168 Benchmark]: Toolchain (without parser) took 5543.47 ms. Allocated memory was 140.0 MB in the beginning and 245.4 MB in the end (delta: 105.4 MB). Free memory was 102.2 MB in the beginning and 108.5 MB in the end (delta: -6.3 MB). Peak memory consumption was 99.1 MB. Max. memory is 7.1 GB. [2020-09-16 00:02:02,788 INFO L168 Benchmark]: CDTParser took 0.20 ms. Allocated memory is still 140.0 MB. Free memory was 121.5 MB in the beginning and 121.3 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. [2020-09-16 00:02:02,789 INFO L168 Benchmark]: CACSL2BoogieTranslator took 819.05 ms. Allocated memory was 140.0 MB in the beginning and 207.1 MB in the end (delta: 67.1 MB). Free memory was 101.5 MB in the beginning and 164.6 MB in the end (delta: -63.1 MB). Peak memory consumption was 26.1 MB. Max. memory is 7.1 GB. [2020-09-16 00:02:02,790 INFO L168 Benchmark]: Boogie Procedure Inliner took 63.87 ms. Allocated memory is still 207.1 MB. Free memory was 164.6 MB in the beginning and 162.6 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 7.1 GB. [2020-09-16 00:02:02,791 INFO L168 Benchmark]: Boogie Preprocessor took 34.70 ms. Allocated memory is still 207.1 MB. Free memory was 162.6 MB in the beginning and 161.3 MB in the end (delta: 1.3 MB). Peak memory consumption was 1.3 MB. Max. memory is 7.1 GB. [2020-09-16 00:02:02,795 INFO L168 Benchmark]: RCFGBuilder took 554.65 ms. Allocated memory is still 207.1 MB. Free memory was 161.3 MB in the beginning and 139.1 MB in the end (delta: 22.2 MB). Peak memory consumption was 22.2 MB. Max. memory is 7.1 GB. [2020-09-16 00:02:02,796 INFO L168 Benchmark]: TraceAbstraction took 4061.84 ms. Allocated memory was 207.1 MB in the beginning and 245.4 MB in the end (delta: 38.3 MB). Free memory was 138.4 MB in the beginning and 108.5 MB in the end (delta: 29.9 MB). Peak memory consumption was 68.2 MB. Max. memory is 7.1 GB. [2020-09-16 00:02:02,807 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.20 ms. Allocated memory is still 140.0 MB. Free memory was 121.5 MB in the beginning and 121.3 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 819.05 ms. Allocated memory was 140.0 MB in the beginning and 207.1 MB in the end (delta: 67.1 MB). Free memory was 101.5 MB in the beginning and 164.6 MB in the end (delta: -63.1 MB). Peak memory consumption was 26.1 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 63.87 ms. Allocated memory is still 207.1 MB. Free memory was 164.6 MB in the beginning and 162.6 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 34.70 ms. Allocated memory is still 207.1 MB. Free memory was 162.6 MB in the beginning and 161.3 MB in the end (delta: 1.3 MB). Peak memory consumption was 1.3 MB. Max. memory is 7.1 GB. * RCFGBuilder took 554.65 ms. Allocated memory is still 207.1 MB. Free memory was 161.3 MB in the beginning and 139.1 MB in the end (delta: 22.2 MB). Peak memory consumption was 22.2 MB. Max. memory is 7.1 GB. * TraceAbstraction took 4061.84 ms. Allocated memory was 207.1 MB in the beginning and 245.4 MB in the end (delta: 38.3 MB). Free memory was 138.4 MB in the beginning and 108.5 MB in the end (delta: 29.9 MB). Peak memory consumption was 68.2 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks LbeTime: 1.5s, 76 ProgramPointsBefore, 31 ProgramPointsAfterwards, 68 TransitionsBefore, 22 TransitionsAfterwards, 1178 CoEnabledTransitionPairs, 7 FixpointIterations, 13 TrivialSequentialCompositions, 35 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 8 ConcurrentYvCompositions, 1 ChoiceCompositions, 588 VarBasedMoverChecksPositive, 20 VarBasedMoverChecksNegative, 0 SemBasedMoverChecksPositive, 0 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.0s, 0 MoverChecksTotal, 2244 CheckedPairsTotal, 56 TotalNumberOfCompositions - PositiveResult [Line: 7]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 67 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 3.9s, OverallIterations: 8, TraceHistogramMax: 1, AutomataDifference: 0.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 1.5s, HoareTripleCheckerStatistics: 161 SDtfs, 188 SDslu, 290 SDs, 0 SdLazy, 150 SolverSat, 33 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 127 GetRequests, 83 SyntacticMatches, 5 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 0.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=274occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 8 MinimizatonAttempts, 6 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 0.6s InterpolantComputationTime, 94 NumberOfCodeBlocks, 94 NumberOfCodeBlocksAsserted, 8 NumberOfCheckSat, 86 ConstructedInterpolants, 0 QuantifiedInterpolants, 3049 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 8 InterpolantComputations, 8 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...