/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-SP.epf -i ../../../trunk/examples/svcomp/pthread-wmm/safe031_tso.oepc.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-1d1d2b5 [2020-10-22 02:20:42,051 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-22 02:20:42,054 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-22 02:20:42,093 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-22 02:20:42,093 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-22 02:20:42,104 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-22 02:20:42,106 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-22 02:20:42,109 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-22 02:20:42,111 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-22 02:20:42,114 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-22 02:20:42,115 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-22 02:20:42,117 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-22 02:20:42,117 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-22 02:20:42,120 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-22 02:20:42,122 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-22 02:20:42,123 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-22 02:20:42,125 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-22 02:20:42,126 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-22 02:20:42,128 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-22 02:20:42,134 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-22 02:20:42,136 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-22 02:20:42,138 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-22 02:20:42,139 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-22 02:20:42,140 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-22 02:20:42,144 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-10-22 02:20:42,148 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-22 02:20:42,149 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-22 02:20:42,150 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-22 02:20:42,150 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-22 02:20:42,151 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-22 02:20:42,151 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-22 02:20:42,152 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-22 02:20:42,152 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-22 02:20:42,152 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-22 02:20:42,154 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-22 02:20:42,156 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-22 02:20:42,156 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-SP.epf [2020-10-22 02:20:42,198 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-22 02:20:42,199 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-22 02:20:42,200 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-22 02:20:42,200 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-22 02:20:42,201 INFO L138 SettingsManager]: * Use SBE=true [2020-10-22 02:20:42,201 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-22 02:20:42,201 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-22 02:20:42,202 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-22 02:20:42,202 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-22 02:20:42,202 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-22 02:20:42,203 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-22 02:20:42,203 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-22 02:20:42,204 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-22 02:20:42,204 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-22 02:20:42,204 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-22 02:20:42,204 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-22 02:20:42,204 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-22 02:20:42,205 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-22 02:20:42,205 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-22 02:20:42,205 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-22 02:20:42,205 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-22 02:20:42,205 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-22 02:20:42,206 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-22 02:20:42,206 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=Craig_NestedInterpolation [2020-10-22 02:20:42,206 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-22 02:20:42,206 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-22 02:20:42,206 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-22 02:20:42,207 INFO L138 SettingsManager]: * Override the interpolant automaton setting of the refinement strategy=true [2020-10-22 02:20:42,207 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=VARIABLE_BASED_MOVER_CHECK [2020-10-22 02:20:42,207 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-22 02:20:42,207 INFO L138 SettingsManager]: * Interpolant automaton=MCR [2020-10-22 02:20:42,492 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-22 02:20:42,505 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-22 02:20:42,508 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-22 02:20:42,510 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-22 02:20:42,510 INFO L275 PluginConnector]: CDTParser initialized [2020-10-22 02:20:42,511 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe031_tso.oepc.i [2020-10-22 02:20:42,571 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8e932efa1/a31d11fdf8bc4f13b38c62038d49e07a/FLAG44f42f3ba [2020-10-22 02:20:43,074 INFO L306 CDTParser]: Found 1 translation units. [2020-10-22 02:20:43,075 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe031_tso.oepc.i [2020-10-22 02:20:43,090 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8e932efa1/a31d11fdf8bc4f13b38c62038d49e07a/FLAG44f42f3ba [2020-10-22 02:20:43,411 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8e932efa1/a31d11fdf8bc4f13b38c62038d49e07a [2020-10-22 02:20:43,419 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-22 02:20:43,427 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2020-10-22 02:20:43,428 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-22 02:20:43,428 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-22 02:20:43,432 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-22 02:20:43,433 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.10 02:20:43" (1/1) ... [2020-10-22 02:20:43,437 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1aedcfc1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 02:20:43, skipping insertion in model container [2020-10-22 02:20:43,437 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.10 02:20:43" (1/1) ... [2020-10-22 02:20:43,445 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-22 02:20:43,491 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-22 02:20:44,006 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-22 02:20:44,017 INFO L203 MainTranslator]: Completed pre-run [2020-10-22 02:20:44,081 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-22 02:20:44,152 INFO L208 MainTranslator]: Completed translation [2020-10-22 02:20:44,153 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 02:20:44 WrapperNode [2020-10-22 02:20:44,153 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-22 02:20:44,154 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-10-22 02:20:44,154 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-10-22 02:20:44,154 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-10-22 02:20:44,163 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 02:20:44" (1/1) ... [2020-10-22 02:20:44,178 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 02:20:44" (1/1) ... [2020-10-22 02:20:44,200 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-10-22 02:20:44,200 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-22 02:20:44,201 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-22 02:20:44,201 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-22 02:20:44,208 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 02:20:44" (1/1) ... [2020-10-22 02:20:44,208 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 02:20:44" (1/1) ... [2020-10-22 02:20:44,211 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 02:20:44" (1/1) ... [2020-10-22 02:20:44,212 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 02:20:44" (1/1) ... [2020-10-22 02:20:44,218 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 02:20:44" (1/1) ... [2020-10-22 02:20:44,221 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 02:20:44" (1/1) ... [2020-10-22 02:20:44,223 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 02:20:44" (1/1) ... [2020-10-22 02:20:44,226 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-22 02:20:44,226 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-22 02:20:44,227 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-22 02:20:44,227 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-22 02:20:44,227 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 02:20:44" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-22 02:20:44,292 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-22 02:20:44,293 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2020-10-22 02:20:44,293 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-22 02:20:44,293 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-22 02:20:44,293 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2020-10-22 02:20:44,293 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2020-10-22 02:20:44,294 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2020-10-22 02:20:44,294 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2020-10-22 02:20:44,294 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2020-10-22 02:20:44,294 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2020-10-22 02:20:44,294 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-22 02:20:44,294 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2020-10-22 02:20:44,295 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-22 02:20:44,295 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-22 02:20:44,297 WARN L208 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2020-10-22 02:20:44,682 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-22 02:20:44,682 INFO L298 CfgBuilder]: Removed 10 assume(true) statements. [2020-10-22 02:20:44,685 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.10 02:20:44 BoogieIcfgContainer [2020-10-22 02:20:44,685 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-22 02:20:44,686 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-22 02:20:44,687 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-22 02:20:44,690 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-22 02:20:44,690 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.10 02:20:43" (1/3) ... [2020-10-22 02:20:44,691 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6ddf3259 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.10 02:20:44, skipping insertion in model container [2020-10-22 02:20:44,691 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 02:20:44" (2/3) ... [2020-10-22 02:20:44,692 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6ddf3259 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.10 02:20:44, skipping insertion in model container [2020-10-22 02:20:44,692 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.10 02:20:44" (3/3) ... [2020-10-22 02:20:44,694 INFO L111 eAbstractionObserver]: Analyzing ICFG safe031_tso.oepc.i [2020-10-22 02:20:44,705 WARN L153 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2020-10-22 02:20:44,705 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-22 02:20:44,714 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-22 02:20:44,715 INFO L348 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2020-10-22 02:20:44,742 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 02:20:44,742 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 02:20:44,742 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 02:20:44,743 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 02:20:44,743 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 02:20:44,743 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 02:20:44,744 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 02:20:44,744 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 02:20:44,744 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 02:20:44,744 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 02:20:44,745 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 02:20:44,745 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 02:20:44,745 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 02:20:44,746 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 02:20:44,746 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 02:20:44,746 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 02:20:44,746 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 02:20:44,747 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 02:20:44,750 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 02:20:44,751 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 02:20:44,751 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 02:20:44,751 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 02:20:44,756 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 02:20:44,757 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 02:20:44,757 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 02:20:44,757 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 02:20:44,762 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 02:20:44,763 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 02:20:44,763 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 02:20:44,763 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 02:20:44,767 INFO L149 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2020-10-22 02:20:44,781 INFO L253 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2020-10-22 02:20:44,800 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-22 02:20:44,800 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-22 02:20:44,800 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-22 02:20:44,800 INFO L380 AbstractCegarLoop]: Backedges is MCR [2020-10-22 02:20:44,800 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-22 02:20:44,800 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-22 02:20:44,801 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-22 02:20:44,801 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-22 02:20:44,813 INFO L137 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2020-10-22 02:20:44,814 INFO L144 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 85 places, 78 transitions, 171 flow [2020-10-22 02:20:44,817 INFO L110 LiptonReduction]: Starting Lipton reduction on Petri net that has 85 places, 78 transitions, 171 flow [2020-10-22 02:20:44,819 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 85 places, 78 transitions, 171 flow [2020-10-22 02:20:44,869 INFO L129 PetriNetUnfolder]: 3/75 cut-off events. [2020-10-22 02:20:44,870 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-10-22 02:20:44,879 INFO L80 FinitePrefix]: Finished finitePrefix Result has 85 conditions, 75 events. 3/75 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 57 event pairs, 0 based on Foata normal form. 0/71 useless extension candidates. Maximal degree in co-relation 60. Up to 2 conditions per place. [2020-10-22 02:20:44,886 INFO L116 LiptonReduction]: Number of co-enabled transitions 1440 [2020-10-22 02:20:46,366 WARN L193 SmtUtils]: Spent 191.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 74 [2020-10-22 02:20:46,475 INFO L131 LiptonReduction]: Checked pairs total: 2814 [2020-10-22 02:20:46,475 INFO L133 LiptonReduction]: Total number of compositions: 71 [2020-10-22 02:20:46,482 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 32 places, 23 transitions, 61 flow [2020-10-22 02:20:46,511 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 362 states. [2020-10-22 02:20:46,513 INFO L276 IsEmpty]: Start isEmpty. Operand 362 states. [2020-10-22 02:20:46,521 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-10-22 02:20:46,521 INFO L414 BasicCegarLoop]: Found error trace [2020-10-22 02:20:46,522 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-10-22 02:20:46,523 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-22 02:20:46,528 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-22 02:20:46,529 INFO L82 PathProgramCache]: Analyzing trace with hash 515529937, now seen corresponding path program 1 times [2020-10-22 02:20:46,552 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-22 02:20:46,553 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [646423402] [2020-10-22 02:20:46,553 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-22 02:20:46,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-22 02:20:46,729 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-22 02:20:46,730 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [646423402] [2020-10-22 02:20:46,731 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-22 02:20:46,731 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-22 02:20:46,732 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [2062407019] [2020-10-22 02:20:46,733 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-22 02:20:46,736 INFO L249 McrAutomatonBuilder]: Started intersection. [2020-10-22 02:20:46,752 INFO L252 McrAutomatonBuilder]: Finished intersection with 9 states and 8 transitions. [2020-10-22 02:20:46,752 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-22 02:20:46,756 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-22 02:20:46,757 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-10-22 02:20:46,757 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-22 02:20:46,772 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-10-22 02:20:46,773 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-10-22 02:20:46,775 INFO L87 Difference]: Start difference. First operand 362 states. Second operand 2 states. [2020-10-22 02:20:46,814 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-22 02:20:46,815 INFO L93 Difference]: Finished difference Result 362 states and 1072 transitions. [2020-10-22 02:20:46,818 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-10-22 02:20:46,821 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 8 [2020-10-22 02:20:46,821 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-22 02:20:46,849 INFO L225 Difference]: With dead ends: 362 [2020-10-22 02:20:46,849 INFO L226 Difference]: Without dead ends: 298 [2020-10-22 02:20:46,851 INFO L677 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 [2020-10-22 02:20:46,882 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 298 states. [2020-10-22 02:20:46,932 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 298 to 298. [2020-10-22 02:20:46,934 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 298 states. [2020-10-22 02:20:46,938 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 298 states to 298 states and 864 transitions. [2020-10-22 02:20:46,940 INFO L78 Accepts]: Start accepts. Automaton has 298 states and 864 transitions. Word has length 8 [2020-10-22 02:20:46,941 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-22 02:20:46,941 INFO L481 AbstractCegarLoop]: Abstraction has 298 states and 864 transitions. [2020-10-22 02:20:46,941 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-10-22 02:20:46,941 INFO L276 IsEmpty]: Start isEmpty. Operand 298 states and 864 transitions. [2020-10-22 02:20:46,943 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-10-22 02:20:46,943 INFO L414 BasicCegarLoop]: Found error trace [2020-10-22 02:20:46,943 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-22 02:20:46,944 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-22 02:20:46,944 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-22 02:20:46,944 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-22 02:20:46,944 INFO L82 PathProgramCache]: Analyzing trace with hash -1198450655, now seen corresponding path program 1 times [2020-10-22 02:20:46,946 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-22 02:20:46,946 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1721804738] [2020-10-22 02:20:46,946 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-22 02:20:47,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-22 02:20:47,084 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-22 02:20:47,085 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1721804738] [2020-10-22 02:20:47,085 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-22 02:20:47,085 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-22 02:20:47,085 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [327680079] [2020-10-22 02:20:47,085 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-22 02:20:47,086 INFO L249 McrAutomatonBuilder]: Started intersection. [2020-10-22 02:20:47,088 INFO L252 McrAutomatonBuilder]: Finished intersection with 10 states and 9 transitions. [2020-10-22 02:20:47,088 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-22 02:20:47,088 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-22 02:20:47,090 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-22 02:20:47,090 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-22 02:20:47,090 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-22 02:20:47,090 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-22 02:20:47,091 INFO L87 Difference]: Start difference. First operand 298 states and 864 transitions. Second operand 4 states. [2020-10-22 02:20:47,132 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-22 02:20:47,132 INFO L93 Difference]: Finished difference Result 346 states and 956 transitions. [2020-10-22 02:20:47,133 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-22 02:20:47,133 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 9 [2020-10-22 02:20:47,133 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-22 02:20:47,136 INFO L225 Difference]: With dead ends: 346 [2020-10-22 02:20:47,136 INFO L226 Difference]: Without dead ends: 282 [2020-10-22 02:20:47,137 INFO L677 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 [2020-10-22 02:20:47,140 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 282 states. [2020-10-22 02:20:47,153 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 282 to 282. [2020-10-22 02:20:47,154 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 282 states. [2020-10-22 02:20:47,156 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 282 states to 282 states and 804 transitions. [2020-10-22 02:20:47,156 INFO L78 Accepts]: Start accepts. Automaton has 282 states and 804 transitions. Word has length 9 [2020-10-22 02:20:47,156 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-22 02:20:47,156 INFO L481 AbstractCegarLoop]: Abstraction has 282 states and 804 transitions. [2020-10-22 02:20:47,157 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-22 02:20:47,157 INFO L276 IsEmpty]: Start isEmpty. Operand 282 states and 804 transitions. [2020-10-22 02:20:47,158 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-10-22 02:20:47,158 INFO L414 BasicCegarLoop]: Found error trace [2020-10-22 02:20:47,158 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-22 02:20:47,159 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-22 02:20:47,159 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-22 02:20:47,159 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-22 02:20:47,159 INFO L82 PathProgramCache]: Analyzing trace with hash 1501217071, now seen corresponding path program 1 times [2020-10-22 02:20:47,160 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-22 02:20:47,161 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2011384839] [2020-10-22 02:20:47,161 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-22 02:20:47,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-22 02:20:47,268 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-22 02:20:47,268 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2011384839] [2020-10-22 02:20:47,269 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-22 02:20:47,271 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-22 02:20:47,271 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1576356676] [2020-10-22 02:20:47,271 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-22 02:20:47,272 INFO L249 McrAutomatonBuilder]: Started intersection. [2020-10-22 02:20:47,273 INFO L252 McrAutomatonBuilder]: Finished intersection with 12 states and 12 transitions. [2020-10-22 02:20:47,274 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-22 02:20:47,292 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-22 02:20:47,292 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-22 02:20:47,292 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-22 02:20:47,293 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-22 02:20:47,293 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-22 02:20:47,293 INFO L87 Difference]: Start difference. First operand 282 states and 804 transitions. Second operand 4 states. [2020-10-22 02:20:47,333 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-22 02:20:47,333 INFO L93 Difference]: Finished difference Result 326 states and 888 transitions. [2020-10-22 02:20:47,334 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-22 02:20:47,334 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 10 [2020-10-22 02:20:47,334 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-22 02:20:47,340 INFO L225 Difference]: With dead ends: 326 [2020-10-22 02:20:47,340 INFO L226 Difference]: Without dead ends: 270 [2020-10-22 02:20:47,341 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-22 02:20:47,343 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 270 states. [2020-10-22 02:20:47,364 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 270 to 270. [2020-10-22 02:20:47,365 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 270 states. [2020-10-22 02:20:47,367 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 270 states to 270 states and 760 transitions. [2020-10-22 02:20:47,367 INFO L78 Accepts]: Start accepts. Automaton has 270 states and 760 transitions. Word has length 10 [2020-10-22 02:20:47,367 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-22 02:20:47,367 INFO L481 AbstractCegarLoop]: Abstraction has 270 states and 760 transitions. [2020-10-22 02:20:47,368 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-22 02:20:47,368 INFO L276 IsEmpty]: Start isEmpty. Operand 270 states and 760 transitions. [2020-10-22 02:20:47,370 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-10-22 02:20:47,370 INFO L414 BasicCegarLoop]: Found error trace [2020-10-22 02:20:47,370 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-22 02:20:47,371 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-22 02:20:47,371 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-22 02:20:47,372 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-22 02:20:47,372 INFO L82 PathProgramCache]: Analyzing trace with hash -1186186363, now seen corresponding path program 1 times [2020-10-22 02:20:47,377 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-22 02:20:47,378 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1798996272] [2020-10-22 02:20:47,378 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-22 02:20:47,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-22 02:20:47,486 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-22 02:20:47,486 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1798996272] [2020-10-22 02:20:47,486 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-22 02:20:47,487 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-22 02:20:47,487 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [765190946] [2020-10-22 02:20:47,487 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-22 02:20:47,488 INFO L249 McrAutomatonBuilder]: Started intersection. [2020-10-22 02:20:47,490 INFO L252 McrAutomatonBuilder]: Finished intersection with 20 states and 28 transitions. [2020-10-22 02:20:47,490 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-22 02:20:47,608 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-22 02:20:47,608 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-22 02:20:47,608 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-22 02:20:47,609 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-22 02:20:47,609 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-22 02:20:47,609 INFO L87 Difference]: Start difference. First operand 270 states and 760 transitions. Second operand 4 states. [2020-10-22 02:20:47,649 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-22 02:20:47,649 INFO L93 Difference]: Finished difference Result 273 states and 687 transitions. [2020-10-22 02:20:47,650 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-22 02:20:47,650 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 11 [2020-10-22 02:20:47,650 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-22 02:20:47,652 INFO L225 Difference]: With dead ends: 273 [2020-10-22 02:20:47,652 INFO L226 Difference]: Without dead ends: 209 [2020-10-22 02:20:47,653 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-22 02:20:47,654 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 209 states. [2020-10-22 02:20:47,659 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 209 to 209. [2020-10-22 02:20:47,659 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 209 states. [2020-10-22 02:20:47,660 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 209 states to 209 states and 516 transitions. [2020-10-22 02:20:47,660 INFO L78 Accepts]: Start accepts. Automaton has 209 states and 516 transitions. Word has length 11 [2020-10-22 02:20:47,661 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-22 02:20:47,661 INFO L481 AbstractCegarLoop]: Abstraction has 209 states and 516 transitions. [2020-10-22 02:20:47,661 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-22 02:20:47,661 INFO L276 IsEmpty]: Start isEmpty. Operand 209 states and 516 transitions. [2020-10-22 02:20:47,662 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-10-22 02:20:47,662 INFO L414 BasicCegarLoop]: Found error trace [2020-10-22 02:20:47,662 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-22 02:20:47,663 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-22 02:20:47,663 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-22 02:20:47,663 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-22 02:20:47,663 INFO L82 PathProgramCache]: Analyzing trace with hash -497822471, now seen corresponding path program 1 times [2020-10-22 02:20:47,665 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-22 02:20:47,665 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1111854156] [2020-10-22 02:20:47,665 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-22 02:20:47,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-22 02:20:47,712 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-22 02:20:47,712 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1111854156] [2020-10-22 02:20:47,713 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-22 02:20:47,713 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-22 02:20:47,713 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [288074340] [2020-10-22 02:20:47,713 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-22 02:20:47,714 INFO L249 McrAutomatonBuilder]: Started intersection. [2020-10-22 02:20:47,715 INFO L252 McrAutomatonBuilder]: Finished intersection with 13 states and 12 transitions. [2020-10-22 02:20:47,716 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-22 02:20:47,716 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-22 02:20:47,716 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-22 02:20:47,716 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-22 02:20:47,717 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-22 02:20:47,717 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-22 02:20:47,717 INFO L87 Difference]: Start difference. First operand 209 states and 516 transitions. Second operand 4 states. [2020-10-22 02:20:47,741 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-22 02:20:47,741 INFO L93 Difference]: Finished difference Result 303 states and 706 transitions. [2020-10-22 02:20:47,742 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-22 02:20:47,742 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 12 [2020-10-22 02:20:47,742 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-22 02:20:47,744 INFO L225 Difference]: With dead ends: 303 [2020-10-22 02:20:47,744 INFO L226 Difference]: Without dead ends: 223 [2020-10-22 02:20:47,744 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-22 02:20:47,746 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 223 states. [2020-10-22 02:20:47,750 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 223 to 199. [2020-10-22 02:20:47,750 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 199 states. [2020-10-22 02:20:47,751 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 199 states to 199 states and 470 transitions. [2020-10-22 02:20:47,751 INFO L78 Accepts]: Start accepts. Automaton has 199 states and 470 transitions. Word has length 12 [2020-10-22 02:20:47,752 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-22 02:20:47,752 INFO L481 AbstractCegarLoop]: Abstraction has 199 states and 470 transitions. [2020-10-22 02:20:47,752 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-22 02:20:47,752 INFO L276 IsEmpty]: Start isEmpty. Operand 199 states and 470 transitions. [2020-10-22 02:20:47,753 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-10-22 02:20:47,753 INFO L414 BasicCegarLoop]: Found error trace [2020-10-22 02:20:47,753 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-22 02:20:47,753 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-22 02:20:47,753 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-22 02:20:47,754 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-22 02:20:47,754 INFO L82 PathProgramCache]: Analyzing trace with hash -319232189, now seen corresponding path program 1 times [2020-10-22 02:20:47,755 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-22 02:20:47,755 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1608542126] [2020-10-22 02:20:47,755 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-22 02:20:47,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-22 02:20:47,815 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-22 02:20:47,815 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1608542126] [2020-10-22 02:20:47,815 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-22 02:20:47,816 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-22 02:20:47,816 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [494528716] [2020-10-22 02:20:47,816 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-22 02:20:47,817 INFO L249 McrAutomatonBuilder]: Started intersection. [2020-10-22 02:20:47,820 INFO L252 McrAutomatonBuilder]: Finished intersection with 30 states and 45 transitions. [2020-10-22 02:20:47,820 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-22 02:20:47,994 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 1 new interpolants: [4969#(<= ~__unbuffered_cnt~0 0)] [2020-10-22 02:20:47,995 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-22 02:20:47,995 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-22 02:20:47,995 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-22 02:20:47,996 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-10-22 02:20:47,996 INFO L87 Difference]: Start difference. First operand 199 states and 470 transitions. Second operand 6 states. [2020-10-22 02:20:48,045 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-22 02:20:48,045 INFO L93 Difference]: Finished difference Result 171 states and 364 transitions. [2020-10-22 02:20:48,046 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-22 02:20:48,046 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 13 [2020-10-22 02:20:48,046 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-22 02:20:48,047 INFO L225 Difference]: With dead ends: 171 [2020-10-22 02:20:48,047 INFO L226 Difference]: Without dead ends: 134 [2020-10-22 02:20:48,048 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2020-10-22 02:20:48,049 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 134 states. [2020-10-22 02:20:48,052 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 134 to 134. [2020-10-22 02:20:48,053 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 134 states. [2020-10-22 02:20:48,053 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 134 states to 134 states and 280 transitions. [2020-10-22 02:20:48,054 INFO L78 Accepts]: Start accepts. Automaton has 134 states and 280 transitions. Word has length 13 [2020-10-22 02:20:48,054 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-22 02:20:48,054 INFO L481 AbstractCegarLoop]: Abstraction has 134 states and 280 transitions. [2020-10-22 02:20:48,054 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-22 02:20:48,054 INFO L276 IsEmpty]: Start isEmpty. Operand 134 states and 280 transitions. [2020-10-22 02:20:48,055 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-10-22 02:20:48,055 INFO L414 BasicCegarLoop]: Found error trace [2020-10-22 02:20:48,055 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-22 02:20:48,055 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-22 02:20:48,055 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-22 02:20:48,056 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-22 02:20:48,056 INFO L82 PathProgramCache]: Analyzing trace with hash 447753789, now seen corresponding path program 1 times [2020-10-22 02:20:48,057 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-22 02:20:48,057 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [61540696] [2020-10-22 02:20:48,057 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-22 02:20:48,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-22 02:20:48,096 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-22 02:20:48,097 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [61540696] [2020-10-22 02:20:48,097 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-22 02:20:48,097 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-22 02:20:48,098 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1876103872] [2020-10-22 02:20:48,098 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-22 02:20:48,100 INFO L249 McrAutomatonBuilder]: Started intersection. [2020-10-22 02:20:48,104 INFO L252 McrAutomatonBuilder]: Finished intersection with 40 states and 67 transitions. [2020-10-22 02:20:48,105 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-22 02:20:48,200 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-22 02:20:48,200 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-22 02:20:48,200 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-22 02:20:48,201 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-22 02:20:48,201 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-22 02:20:48,201 INFO L87 Difference]: Start difference. First operand 134 states and 280 transitions. Second operand 4 states. [2020-10-22 02:20:48,258 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-22 02:20:48,258 INFO L93 Difference]: Finished difference Result 177 states and 347 transitions. [2020-10-22 02:20:48,259 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-22 02:20:48,259 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 15 [2020-10-22 02:20:48,259 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-22 02:20:48,260 INFO L225 Difference]: With dead ends: 177 [2020-10-22 02:20:48,260 INFO L226 Difference]: Without dead ends: 130 [2020-10-22 02:20:48,261 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-22 02:20:48,261 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 130 states. [2020-10-22 02:20:48,264 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 130 to 126. [2020-10-22 02:20:48,265 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 126 states. [2020-10-22 02:20:48,265 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 126 states to 126 states and 248 transitions. [2020-10-22 02:20:48,265 INFO L78 Accepts]: Start accepts. Automaton has 126 states and 248 transitions. Word has length 15 [2020-10-22 02:20:48,266 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-22 02:20:48,267 INFO L481 AbstractCegarLoop]: Abstraction has 126 states and 248 transitions. [2020-10-22 02:20:48,267 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-22 02:20:48,267 INFO L276 IsEmpty]: Start isEmpty. Operand 126 states and 248 transitions. [2020-10-22 02:20:48,267 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-10-22 02:20:48,268 INFO L414 BasicCegarLoop]: Found error trace [2020-10-22 02:20:48,271 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-22 02:20:48,271 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-22 02:20:48,271 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-22 02:20:48,272 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-22 02:20:48,274 INFO L82 PathProgramCache]: Analyzing trace with hash 144030791, now seen corresponding path program 1 times [2020-10-22 02:20:48,276 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-22 02:20:48,276 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [737195183] [2020-10-22 02:20:48,276 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-22 02:20:48,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-22 02:20:48,383 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-22 02:20:48,385 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [737195183] [2020-10-22 02:20:48,385 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-22 02:20:48,385 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-22 02:20:48,386 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [236895420] [2020-10-22 02:20:48,386 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-22 02:20:48,387 INFO L249 McrAutomatonBuilder]: Started intersection. [2020-10-22 02:20:48,393 INFO L252 McrAutomatonBuilder]: Finished intersection with 34 states and 48 transitions. [2020-10-22 02:20:48,393 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-22 02:20:48,393 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-22 02:20:48,394 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-22 02:20:48,394 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-22 02:20:48,394 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-22 02:20:48,395 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-10-22 02:20:48,395 INFO L87 Difference]: Start difference. First operand 126 states and 248 transitions. Second operand 6 states. [2020-10-22 02:20:48,449 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-22 02:20:48,449 INFO L93 Difference]: Finished difference Result 113 states and 220 transitions. [2020-10-22 02:20:48,450 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-22 02:20:48,450 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 15 [2020-10-22 02:20:48,450 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-22 02:20:48,451 INFO L225 Difference]: With dead ends: 113 [2020-10-22 02:20:48,451 INFO L226 Difference]: Without dead ends: 37 [2020-10-22 02:20:48,451 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2020-10-22 02:20:48,451 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2020-10-22 02:20:48,452 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 37. [2020-10-22 02:20:48,453 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37 states. [2020-10-22 02:20:48,453 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 57 transitions. [2020-10-22 02:20:48,453 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 57 transitions. Word has length 15 [2020-10-22 02:20:48,453 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-22 02:20:48,453 INFO L481 AbstractCegarLoop]: Abstraction has 37 states and 57 transitions. [2020-10-22 02:20:48,453 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-22 02:20:48,454 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 57 transitions. [2020-10-22 02:20:48,454 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-10-22 02:20:48,454 INFO L414 BasicCegarLoop]: Found error trace [2020-10-22 02:20:48,454 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-22 02:20:48,455 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-22 02:20:48,455 INFO L429 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-22 02:20:48,455 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-22 02:20:48,455 INFO L82 PathProgramCache]: Analyzing trace with hash -1289085181, now seen corresponding path program 1 times [2020-10-22 02:20:48,457 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-22 02:20:48,457 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [605103472] [2020-10-22 02:20:48,457 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-22 02:20:48,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-22 02:20:48,519 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-22 02:20:48,520 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [605103472] [2020-10-22 02:20:48,520 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-22 02:20:48,520 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-22 02:20:48,520 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [2051536136] [2020-10-22 02:20:48,521 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-22 02:20:48,523 INFO L249 McrAutomatonBuilder]: Started intersection. [2020-10-22 02:20:48,529 INFO L252 McrAutomatonBuilder]: Finished intersection with 62 states and 104 transitions. [2020-10-22 02:20:48,529 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-22 02:20:48,556 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-22 02:20:48,557 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-22 02:20:48,557 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-22 02:20:48,557 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-22 02:20:48,557 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-22 02:20:48,557 INFO L87 Difference]: Start difference. First operand 37 states and 57 transitions. Second operand 5 states. [2020-10-22 02:20:48,579 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-22 02:20:48,579 INFO L93 Difference]: Finished difference Result 36 states and 56 transitions. [2020-10-22 02:20:48,579 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-22 02:20:48,580 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 18 [2020-10-22 02:20:48,580 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-22 02:20:48,580 INFO L225 Difference]: With dead ends: 36 [2020-10-22 02:20:48,580 INFO L226 Difference]: Without dead ends: 0 [2020-10-22 02:20:48,580 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-10-22 02:20:48,581 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-10-22 02:20:48,581 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-10-22 02:20:48,581 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-10-22 02:20:48,581 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-10-22 02:20:48,581 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 18 [2020-10-22 02:20:48,581 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-22 02:20:48,582 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-10-22 02:20:48,582 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-22 02:20:48,582 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-10-22 02:20:48,582 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-10-22 02:20:48,582 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-22 02:20:48,586 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.10 02:20:48 BasicIcfg [2020-10-22 02:20:48,586 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-22 02:20:48,588 INFO L168 Benchmark]: Toolchain (without parser) took 5166.75 ms. Allocated memory was 147.8 MB in the beginning and 277.3 MB in the end (delta: 129.5 MB). Free memory was 102.3 MB in the beginning and 197.4 MB in the end (delta: -95.1 MB). Peak memory consumption was 34.4 MB. Max. memory is 7.1 GB. [2020-10-22 02:20:48,589 INFO L168 Benchmark]: CDTParser took 0.21 ms. Allocated memory is still 147.8 MB. Free memory was 122.6 MB in the beginning and 122.4 MB in the end (delta: 209.7 kB). Peak memory consumption was 209.7 kB. Max. memory is 7.1 GB. [2020-10-22 02:20:48,590 INFO L168 Benchmark]: CACSL2BoogieTranslator took 725.57 ms. Allocated memory was 147.8 MB in the beginning and 204.5 MB in the end (delta: 56.6 MB). Free memory was 101.4 MB in the beginning and 158.6 MB in the end (delta: -57.1 MB). Peak memory consumption was 20.2 MB. Max. memory is 7.1 GB. [2020-10-22 02:20:48,590 INFO L168 Benchmark]: Boogie Procedure Inliner took 46.48 ms. Allocated memory is still 204.5 MB. Free memory was 158.6 MB in the beginning and 156.5 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 7.1 GB. [2020-10-22 02:20:48,591 INFO L168 Benchmark]: Boogie Preprocessor took 25.64 ms. Allocated memory is still 204.5 MB. Free memory was 156.5 MB in the beginning and 154.6 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 7.1 GB. [2020-10-22 02:20:48,592 INFO L168 Benchmark]: RCFGBuilder took 458.67 ms. Allocated memory is still 204.5 MB. Free memory was 154.6 MB in the beginning and 130.8 MB in the end (delta: 23.8 MB). Peak memory consumption was 23.8 MB. Max. memory is 7.1 GB. [2020-10-22 02:20:48,593 INFO L168 Benchmark]: TraceAbstraction took 3899.69 ms. Allocated memory was 204.5 MB in the beginning and 277.3 MB in the end (delta: 72.9 MB). Free memory was 130.1 MB in the beginning and 197.4 MB in the end (delta: -67.2 MB). Peak memory consumption was 5.6 MB. Max. memory is 7.1 GB. [2020-10-22 02:20:48,597 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.21 ms. Allocated memory is still 147.8 MB. Free memory was 122.6 MB in the beginning and 122.4 MB in the end (delta: 209.7 kB). Peak memory consumption was 209.7 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 725.57 ms. Allocated memory was 147.8 MB in the beginning and 204.5 MB in the end (delta: 56.6 MB). Free memory was 101.4 MB in the beginning and 158.6 MB in the end (delta: -57.1 MB). Peak memory consumption was 20.2 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 46.48 ms. Allocated memory is still 204.5 MB. Free memory was 158.6 MB in the beginning and 156.5 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 25.64 ms. Allocated memory is still 204.5 MB. Free memory was 156.5 MB in the beginning and 154.6 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 7.1 GB. * RCFGBuilder took 458.67 ms. Allocated memory is still 204.5 MB. Free memory was 154.6 MB in the beginning and 130.8 MB in the end (delta: 23.8 MB). Peak memory consumption was 23.8 MB. Max. memory is 7.1 GB. * TraceAbstraction took 3899.69 ms. Allocated memory was 204.5 MB in the beginning and 277.3 MB in the end (delta: 72.9 MB). Free memory was 130.1 MB in the beginning and 197.4 MB in the end (delta: -67.2 MB). Peak memory consumption was 5.6 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks 779 VarBasedMoverChecksPositive, 21 VarBasedMoverChecksNegative, 0 SemBasedMoverChecksPositive, 0 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.0s, 48 CheckedPairsTotal, LiptonReductionStatistics: ReductionTime: 1.6s, 85 PlacesBefore, 32 PlacesAfterwards, 78 TransitionsBefore, 23 TransitionsAfterwards, 1440 CoEnabledTransitionPairs, 6 FixpointIterations, 17 TrivialSequentialCompositions, 42 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 10 ConcurrentYvCompositions, 2 ChoiceCompositions, 71 TotalNumberOfCompositions, 2814 MoverChecksTotal - PositiveResult [Line: 17]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 76 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 3.7s, OverallIterations: 9, TraceHistogramMax: 1, AutomataDifference: 0.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 1.7s, HoareTripleCheckerStatistics: 212 SDtfs, 158 SDslu, 327 SDs, 0 SdLazy, 121 SolverSat, 19 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 91 GetRequests, 61 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=362occurred 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, 9 MinimizatonAttempts, 28 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 0.4s InterpolantComputationTime, 111 NumberOfCodeBlocks, 111 NumberOfCodeBlocksAsserted, 9 NumberOfCheckSat, 102 ConstructedInterpolants, 0 QuantifiedInterpolants, 3478 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 9 InterpolantComputations, 9 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...