/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.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/safe013_tso.oepc.i -------------------------------------------------------------------------------- This is Ultimate 0.2.0-7a177ad [2020-11-09 17:05:10,059 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-09 17:05:10,063 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-09 17:05:10,106 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-09 17:05:10,106 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-09 17:05:10,108 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-09 17:05:10,110 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-09 17:05:10,112 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-09 17:05:10,115 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-09 17:05:10,116 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-09 17:05:10,117 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-09 17:05:10,119 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-09 17:05:10,119 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-09 17:05:10,121 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-09 17:05:10,122 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-09 17:05:10,124 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-09 17:05:10,125 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-09 17:05:10,126 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-09 17:05:10,128 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-09 17:05:10,131 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-09 17:05:10,144 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-09 17:05:10,146 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-09 17:05:10,148 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-09 17:05:10,149 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-09 17:05:10,152 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-11-09 17:05:10,157 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-09 17:05:10,158 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-09 17:05:10,159 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-09 17:05:10,160 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-09 17:05:10,161 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-09 17:05:10,161 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-09 17:05:10,162 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-09 17:05:10,163 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-09 17:05:10,163 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-09 17:05:10,164 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-09 17:05:10,165 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-09 17:05:10,166 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 [2020-11-09 17:05:10,198 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-09 17:05:10,198 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-09 17:05:10,201 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-11-09 17:05:10,202 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-11-09 17:05:10,202 INFO L138 SettingsManager]: * Use SBE=true [2020-11-09 17:05:10,202 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-09 17:05:10,203 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-09 17:05:10,203 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-11-09 17:05:10,203 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-09 17:05:10,203 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-09 17:05:10,204 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-11-09 17:05:10,205 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-09 17:05:10,205 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-11-09 17:05:10,205 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-09 17:05:10,205 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-09 17:05:10,205 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-09 17:05:10,206 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-11-09 17:05:10,206 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-09 17:05:10,206 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-11-09 17:05:10,206 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-09 17:05:10,207 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-11-09 17:05:10,207 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-09 17:05:10,207 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-09 17:05:10,207 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=Craig_NestedInterpolation [2020-11-09 17:05:10,207 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-11-09 17:05:10,208 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-11-09 17:05:10,208 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-11-09 17:05:10,208 INFO L138 SettingsManager]: * Override the interpolant automaton setting of the refinement strategy=true [2020-11-09 17:05:10,208 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=VARIABLE_BASED_MOVER_CHECK [2020-11-09 17:05:10,209 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-11-09 17:05:10,209 INFO L138 SettingsManager]: * Interpolant automaton=MCR WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2020-11-09 17:05:10,657 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-09 17:05:10,683 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-09 17:05:10,687 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-09 17:05:10,688 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-09 17:05:10,689 INFO L275 PluginConnector]: CDTParser initialized [2020-11-09 17:05:10,690 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe013_tso.oepc.i [2020-11-09 17:05:10,778 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e7be91f79/3b6e2144942a48e78720e73afb95aa13/FLAG277fd21a6 [2020-11-09 17:05:11,508 INFO L306 CDTParser]: Found 1 translation units. [2020-11-09 17:05:11,509 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe013_tso.oepc.i [2020-11-09 17:05:11,532 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e7be91f79/3b6e2144942a48e78720e73afb95aa13/FLAG277fd21a6 [2020-11-09 17:05:11,723 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e7be91f79/3b6e2144942a48e78720e73afb95aa13 [2020-11-09 17:05:11,726 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-09 17:05:11,734 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2020-11-09 17:05:11,735 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-09 17:05:11,736 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-09 17:05:11,741 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-09 17:05:11,742 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.11 05:05:11" (1/1) ... [2020-11-09 17:05:11,747 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2cef8b6d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 05:05:11, skipping insertion in model container [2020-11-09 17:05:11,747 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.11 05:05:11" (1/1) ... [2020-11-09 17:05:11,755 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-09 17:05:11,824 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-09 17:05:12,155 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-09 17:05:12,165 INFO L203 MainTranslator]: Completed pre-run [2020-11-09 17:05:12,221 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-09 17:05:12,326 INFO L208 MainTranslator]: Completed translation [2020-11-09 17:05:12,328 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 05:05:12 WrapperNode [2020-11-09 17:05:12,328 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-09 17:05:12,330 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-11-09 17:05:12,330 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-11-09 17:05:12,330 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-11-09 17:05:12,342 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 05:05:12" (1/1) ... [2020-11-09 17:05:12,379 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 05:05:12" (1/1) ... [2020-11-09 17:05:12,414 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-11-09 17:05:12,417 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-09 17:05:12,417 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-09 17:05:12,417 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-09 17:05:12,427 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 05:05:12" (1/1) ... [2020-11-09 17:05:12,427 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 05:05:12" (1/1) ... [2020-11-09 17:05:12,445 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 05:05:12" (1/1) ... [2020-11-09 17:05:12,446 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 05:05:12" (1/1) ... [2020-11-09 17:05:12,459 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 05:05:12" (1/1) ... [2020-11-09 17:05:12,466 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 05:05:12" (1/1) ... [2020-11-09 17:05:12,469 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 05:05:12" (1/1) ... [2020-11-09 17:05:12,475 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-09 17:05:12,478 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-09 17:05:12,479 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-09 17:05:12,479 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-09 17:05:12,480 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 05:05:12" (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 [2020-11-09 17:05:12,550 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-11-09 17:05:12,550 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2020-11-09 17:05:12,550 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-09 17:05:12,551 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-11-09 17:05:12,551 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2020-11-09 17:05:12,551 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2020-11-09 17:05:12,551 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2020-11-09 17:05:12,551 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2020-11-09 17:05:12,551 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2020-11-09 17:05:12,552 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2020-11-09 17:05:12,552 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-11-09 17:05:12,552 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2020-11-09 17:05:12,552 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-09 17:05:12,552 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-09 17:05:12,554 WARN L208 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2020-11-09 17:05:13,286 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-09 17:05:13,286 INFO L298 CfgBuilder]: Removed 10 assume(true) statements. [2020-11-09 17:05:13,291 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.11 05:05:13 BoogieIcfgContainer [2020-11-09 17:05:13,292 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-09 17:05:13,295 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-11-09 17:05:13,295 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-11-09 17:05:13,299 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-11-09 17:05:13,299 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 09.11 05:05:11" (1/3) ... [2020-11-09 17:05:13,300 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3dff5a9e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.11 05:05:13, skipping insertion in model container [2020-11-09 17:05:13,301 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 05:05:12" (2/3) ... [2020-11-09 17:05:13,301 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3dff5a9e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.11 05:05:13, skipping insertion in model container [2020-11-09 17:05:13,301 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.11 05:05:13" (3/3) ... [2020-11-09 17:05:13,303 INFO L111 eAbstractionObserver]: Analyzing ICFG safe013_tso.oepc.i [2020-11-09 17:05:13,326 WARN L168 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2020-11-09 17:05:13,327 INFO L179 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-11-09 17:05:13,331 INFO L191 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-11-09 17:05:13,332 INFO L351 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2020-11-09 17:05:13,386 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 17:05:13,387 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 17:05:13,387 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 17:05:13,387 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 17:05:13,387 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 17:05:13,388 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 17:05:13,388 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 17:05:13,388 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 17:05:13,388 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 17:05:13,389 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 17:05:13,389 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 17:05:13,389 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 17:05:13,390 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 17:05:13,390 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 17:05:13,391 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 17:05:13,391 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 17:05:13,392 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 17:05:13,392 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 17:05:13,393 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 17:05:13,393 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 17:05:13,393 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 17:05:13,393 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 17:05:13,394 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 17:05:13,394 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 17:05:13,396 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 17:05:13,398 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 17:05:13,398 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 17:05:13,398 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 17:05:13,399 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 17:05:13,399 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 17:05:13,399 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 17:05:13,399 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 17:05:13,400 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 17:05:13,400 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 17:05:13,401 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 17:05:13,401 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 17:05:13,409 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 17:05:13,410 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 17:05:13,410 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 17:05:13,410 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 17:05:13,420 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 17:05:13,420 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 17:05:13,420 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 17:05:13,420 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 17:05:13,425 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 17:05:13,425 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 17:05:13,425 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 17:05:13,426 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 17:05:13,429 INFO L149 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2020-11-09 17:05:13,442 INFO L253 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2020-11-09 17:05:13,471 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-11-09 17:05:13,471 INFO L378 AbstractCegarLoop]: Hoare is true [2020-11-09 17:05:13,472 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-11-09 17:05:13,472 INFO L380 AbstractCegarLoop]: Backedges is MCR [2020-11-09 17:05:13,472 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-09 17:05:13,472 INFO L382 AbstractCegarLoop]: Difference is false [2020-11-09 17:05:13,472 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-09 17:05:13,472 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-11-09 17:05:13,485 INFO L128 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2020-11-09 17:05:13,486 INFO L135 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 86 places, 79 transitions, 173 flow [2020-11-09 17:05:13,489 INFO L110 LiptonReduction]: Starting Lipton reduction on Petri net that has 86 places, 79 transitions, 173 flow [2020-11-09 17:05:13,492 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 86 places, 79 transitions, 173 flow [2020-11-09 17:05:13,539 INFO L129 PetriNetUnfolder]: 3/76 cut-off events. [2020-11-09 17:05:13,539 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-11-09 17:05:13,547 INFO L84 FinitePrefix]: Finished finitePrefix Result has 86 conditions, 76 events. 3/76 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 62 event pairs, 0 based on Foata normal form. 0/72 useless extension candidates. Maximal degree in co-relation 60. Up to 2 conditions per place. [2020-11-09 17:05:13,550 INFO L116 LiptonReduction]: Number of co-enabled transitions 1440 [2020-11-09 17:05:15,883 WARN L194 SmtUtils]: Spent 119.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 52 [2020-11-09 17:05:16,075 WARN L194 SmtUtils]: Spent 137.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 52 [2020-11-09 17:05:16,589 WARN L194 SmtUtils]: Spent 223.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 76 [2020-11-09 17:05:16,705 WARN L194 SmtUtils]: Spent 112.00 ms on a formula simplification that was a NOOP. DAG size: 72 [2020-11-09 17:05:16,938 WARN L194 SmtUtils]: Spent 231.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 76 [2020-11-09 17:05:17,045 WARN L194 SmtUtils]: Spent 102.00 ms on a formula simplification that was a NOOP. DAG size: 72 [2020-11-09 17:05:17,090 INFO L131 LiptonReduction]: Checked pairs total: 2822 [2020-11-09 17:05:17,091 INFO L133 LiptonReduction]: Total number of compositions: 71 [2020-11-09 17:05:17,099 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 32 places, 23 transitions, 61 flow [2020-11-09 17:05:17,132 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 362 states. [2020-11-09 17:05:17,134 INFO L276 IsEmpty]: Start isEmpty. Operand 362 states. [2020-11-09 17:05:17,142 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-11-09 17:05:17,143 INFO L414 BasicCegarLoop]: Found error trace [2020-11-09 17:05:17,143 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-11-09 17:05:17,144 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-09 17:05:17,150 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-09 17:05:17,151 INFO L82 PathProgramCache]: Analyzing trace with hash 406549293, now seen corresponding path program 1 times [2020-11-09 17:05:17,178 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-09 17:05:17,179 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [258767668] [2020-11-09 17:05:17,179 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-09 17:05:17,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-09 17:05:17,367 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-09 17:05:17,368 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [258767668] [2020-11-09 17:05:17,369 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-09 17:05:17,369 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-11-09 17:05:17,370 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1694478386] [2020-11-09 17:05:17,371 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-11-09 17:05:17,374 INFO L249 McrAutomatonBuilder]: Started intersection. [2020-11-09 17:05:17,388 INFO L252 McrAutomatonBuilder]: Finished intersection with 9 states and 8 transitions. [2020-11-09 17:05:17,388 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-11-09 17:05:17,393 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-11-09 17:05:17,393 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-11-09 17:05:17,394 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-09 17:05:17,431 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-11-09 17:05:17,432 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-11-09 17:05:17,434 INFO L87 Difference]: Start difference. First operand 362 states. Second operand 2 states. [2020-11-09 17:05:17,457 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-09 17:05:17,458 INFO L93 Difference]: Finished difference Result 362 states and 1072 transitions. [2020-11-09 17:05:17,458 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-11-09 17:05:17,459 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 8 [2020-11-09 17:05:17,460 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-09 17:05:17,477 INFO L225 Difference]: With dead ends: 362 [2020-11-09 17:05:17,477 INFO L226 Difference]: Without dead ends: 298 [2020-11-09 17:05:17,479 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 [2020-11-09 17:05:17,505 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 298 states. [2020-11-09 17:05:17,550 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 298 to 298. [2020-11-09 17:05:17,551 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 298 states. [2020-11-09 17:05:17,559 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 298 states to 298 states and 864 transitions. [2020-11-09 17:05:17,562 INFO L78 Accepts]: Start accepts. Automaton has 298 states and 864 transitions. Word has length 8 [2020-11-09 17:05:17,563 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-09 17:05:17,563 INFO L481 AbstractCegarLoop]: Abstraction has 298 states and 864 transitions. [2020-11-09 17:05:17,563 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-11-09 17:05:17,563 INFO L276 IsEmpty]: Start isEmpty. Operand 298 states and 864 transitions. [2020-11-09 17:05:17,565 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-11-09 17:05:17,565 INFO L414 BasicCegarLoop]: Found error trace [2020-11-09 17:05:17,565 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-09 17:05:17,572 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-11-09 17:05:17,573 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-09 17:05:17,575 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-09 17:05:17,575 INFO L82 PathProgramCache]: Analyzing trace with hash -281880887, now seen corresponding path program 1 times [2020-11-09 17:05:17,576 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-09 17:05:17,577 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1060928399] [2020-11-09 17:05:17,577 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-09 17:05:17,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-09 17:05:17,755 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-09 17:05:17,756 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1060928399] [2020-11-09 17:05:17,756 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-09 17:05:17,756 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-11-09 17:05:17,756 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1082687566] [2020-11-09 17:05:17,757 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-11-09 17:05:17,758 INFO L249 McrAutomatonBuilder]: Started intersection. [2020-11-09 17:05:17,759 INFO L252 McrAutomatonBuilder]: Finished intersection with 10 states and 9 transitions. [2020-11-09 17:05:17,760 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-11-09 17:05:17,760 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-11-09 17:05:17,761 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-09 17:05:17,762 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-09 17:05:17,763 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-09 17:05:17,763 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-09 17:05:17,763 INFO L87 Difference]: Start difference. First operand 298 states and 864 transitions. Second operand 3 states. [2020-11-09 17:05:17,783 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-09 17:05:17,783 INFO L93 Difference]: Finished difference Result 217 states and 540 transitions. [2020-11-09 17:05:17,784 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-09 17:05:17,784 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 9 [2020-11-09 17:05:17,784 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-09 17:05:17,787 INFO L225 Difference]: With dead ends: 217 [2020-11-09 17:05:17,787 INFO L226 Difference]: Without dead ends: 217 [2020-11-09 17:05:17,788 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-09 17:05:17,791 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 217 states. [2020-11-09 17:05:17,807 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 217 to 217. [2020-11-09 17:05:17,810 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 217 states. [2020-11-09 17:05:17,812 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 217 states to 217 states and 540 transitions. [2020-11-09 17:05:17,813 INFO L78 Accepts]: Start accepts. Automaton has 217 states and 540 transitions. Word has length 9 [2020-11-09 17:05:17,813 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-09 17:05:17,816 INFO L481 AbstractCegarLoop]: Abstraction has 217 states and 540 transitions. [2020-11-09 17:05:17,816 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-09 17:05:17,816 INFO L276 IsEmpty]: Start isEmpty. Operand 217 states and 540 transitions. [2020-11-09 17:05:17,818 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-11-09 17:05:17,818 INFO L414 BasicCegarLoop]: Found error trace [2020-11-09 17:05:17,818 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-09 17:05:17,819 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-11-09 17:05:17,819 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-09 17:05:17,819 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-09 17:05:17,820 INFO L82 PathProgramCache]: Analyzing trace with hash -389577111, now seen corresponding path program 1 times [2020-11-09 17:05:17,829 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-09 17:05:17,829 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2000320740] [2020-11-09 17:05:17,829 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-09 17:05:17,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-09 17:05:17,960 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-09 17:05:17,960 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2000320740] [2020-11-09 17:05:17,960 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-09 17:05:17,961 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-09 17:05:17,961 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1783095183] [2020-11-09 17:05:17,961 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-11-09 17:05:17,962 INFO L249 McrAutomatonBuilder]: Started intersection. [2020-11-09 17:05:17,965 INFO L252 McrAutomatonBuilder]: Finished intersection with 25 states and 36 transitions. [2020-11-09 17:05:17,965 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-11-09 17:05:18,138 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 1 new interpolants: [2431#(<= ~__unbuffered_cnt~0 0)] [2020-11-09 17:05:18,138 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-11-09 17:05:18,138 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-09 17:05:18,139 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-11-09 17:05:18,140 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2020-11-09 17:05:18,140 INFO L87 Difference]: Start difference. First operand 217 states and 540 transitions. Second operand 5 states. [2020-11-09 17:05:18,196 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-09 17:05:18,197 INFO L93 Difference]: Finished difference Result 136 states and 297 transitions. [2020-11-09 17:05:18,198 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-09 17:05:18,198 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 12 [2020-11-09 17:05:18,199 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-09 17:05:18,200 INFO L225 Difference]: With dead ends: 136 [2020-11-09 17:05:18,200 INFO L226 Difference]: Without dead ends: 136 [2020-11-09 17:05:18,201 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 9 SyntacticMatches, 3 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2020-11-09 17:05:18,205 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 136 states. [2020-11-09 17:05:18,220 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 136 to 136. [2020-11-09 17:05:18,220 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 136 states. [2020-11-09 17:05:18,223 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 136 states to 136 states and 297 transitions. [2020-11-09 17:05:18,223 INFO L78 Accepts]: Start accepts. Automaton has 136 states and 297 transitions. Word has length 12 [2020-11-09 17:05:18,224 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-09 17:05:18,224 INFO L481 AbstractCegarLoop]: Abstraction has 136 states and 297 transitions. [2020-11-09 17:05:18,224 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-11-09 17:05:18,226 INFO L276 IsEmpty]: Start isEmpty. Operand 136 states and 297 transitions. [2020-11-09 17:05:18,227 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-11-09 17:05:18,228 INFO L414 BasicCegarLoop]: Found error trace [2020-11-09 17:05:18,228 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-09 17:05:18,228 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-11-09 17:05:18,228 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-09 17:05:18,229 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-09 17:05:18,229 INFO L82 PathProgramCache]: Analyzing trace with hash 1823296511, now seen corresponding path program 1 times [2020-11-09 17:05:18,232 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-09 17:05:18,232 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [824920054] [2020-11-09 17:05:18,232 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-09 17:05:18,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-09 17:05:18,350 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-09 17:05:18,351 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [824920054] [2020-11-09 17:05:18,351 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-09 17:05:18,351 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-11-09 17:05:18,351 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [168671130] [2020-11-09 17:05:18,351 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-11-09 17:05:18,356 INFO L249 McrAutomatonBuilder]: Started intersection. [2020-11-09 17:05:18,360 INFO L252 McrAutomatonBuilder]: Finished intersection with 32 states and 47 transitions. [2020-11-09 17:05:18,360 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-11-09 17:05:18,531 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 1 new interpolants: [2845#(<= ~__unbuffered_cnt~0 0)] [2020-11-09 17:05:18,532 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-11-09 17:05:18,532 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-09 17:05:18,533 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-11-09 17:05:18,533 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2020-11-09 17:05:18,533 INFO L87 Difference]: Start difference. First operand 136 states and 297 transitions. Second operand 6 states. [2020-11-09 17:05:18,570 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-09 17:05:18,570 INFO L93 Difference]: Finished difference Result 109 states and 243 transitions. [2020-11-09 17:05:18,571 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-11-09 17:05:18,572 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 15 [2020-11-09 17:05:18,572 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-09 17:05:18,574 INFO L225 Difference]: With dead ends: 109 [2020-11-09 17:05:18,574 INFO L226 Difference]: Without dead ends: 109 [2020-11-09 17:05:18,574 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 13 SyntacticMatches, 3 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2020-11-09 17:05:18,575 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 109 states. [2020-11-09 17:05:18,579 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 109 to 109. [2020-11-09 17:05:18,579 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 109 states. [2020-11-09 17:05:18,580 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 109 states to 109 states and 243 transitions. [2020-11-09 17:05:18,580 INFO L78 Accepts]: Start accepts. Automaton has 109 states and 243 transitions. Word has length 15 [2020-11-09 17:05:18,580 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-09 17:05:18,580 INFO L481 AbstractCegarLoop]: Abstraction has 109 states and 243 transitions. [2020-11-09 17:05:18,580 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-11-09 17:05:18,581 INFO L276 IsEmpty]: Start isEmpty. Operand 109 states and 243 transitions. [2020-11-09 17:05:18,582 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-11-09 17:05:18,582 INFO L414 BasicCegarLoop]: Found error trace [2020-11-09 17:05:18,582 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-09 17:05:18,583 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-11-09 17:05:18,583 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-09 17:05:18,583 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-09 17:05:18,583 INFO L82 PathProgramCache]: Analyzing trace with hash -1915158341, now seen corresponding path program 1 times [2020-11-09 17:05:18,586 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-09 17:05:18,586 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1998483060] [2020-11-09 17:05:18,586 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-09 17:05:18,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-09 17:05:18,709 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-09 17:05:18,709 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1998483060] [2020-11-09 17:05:18,709 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-09 17:05:18,709 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-09 17:05:18,710 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [597604508] [2020-11-09 17:05:18,710 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-11-09 17:05:18,714 INFO L249 McrAutomatonBuilder]: Started intersection. [2020-11-09 17:05:18,723 INFO L252 McrAutomatonBuilder]: Finished intersection with 39 states and 58 transitions. [2020-11-09 17:05:18,724 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-11-09 17:05:18,740 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-11-09 17:05:18,740 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-09 17:05:18,741 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-09 17:05:18,743 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-09 17:05:18,743 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-09 17:05:18,743 INFO L87 Difference]: Start difference. First operand 109 states and 243 transitions. Second operand 4 states. [2020-11-09 17:05:18,774 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-09 17:05:18,774 INFO L93 Difference]: Finished difference Result 135 states and 291 transitions. [2020-11-09 17:05:18,774 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-09 17:05:18,775 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 18 [2020-11-09 17:05:18,775 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-09 17:05:18,775 INFO L225 Difference]: With dead ends: 135 [2020-11-09 17:05:18,776 INFO L226 Difference]: Without dead ends: 55 [2020-11-09 17:05:18,776 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-11-09 17:05:18,777 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55 states. [2020-11-09 17:05:18,779 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55 to 55. [2020-11-09 17:05:18,785 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 55 states. [2020-11-09 17:05:18,785 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 99 transitions. [2020-11-09 17:05:18,786 INFO L78 Accepts]: Start accepts. Automaton has 55 states and 99 transitions. Word has length 18 [2020-11-09 17:05:18,786 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-09 17:05:18,786 INFO L481 AbstractCegarLoop]: Abstraction has 55 states and 99 transitions. [2020-11-09 17:05:18,786 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-09 17:05:18,786 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states and 99 transitions. [2020-11-09 17:05:18,787 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-11-09 17:05:18,787 INFO L414 BasicCegarLoop]: Found error trace [2020-11-09 17:05:18,787 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-09 17:05:18,787 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-11-09 17:05:18,788 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-09 17:05:18,790 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-09 17:05:18,790 INFO L82 PathProgramCache]: Analyzing trace with hash 1566003365, now seen corresponding path program 2 times [2020-11-09 17:05:18,796 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-09 17:05:18,796 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [431723734] [2020-11-09 17:05:18,796 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-09 17:05:18,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-09 17:05:18,862 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-09 17:05:18,862 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [431723734] [2020-11-09 17:05:18,862 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-09 17:05:18,862 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-11-09 17:05:18,863 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1810926287] [2020-11-09 17:05:18,863 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-11-09 17:05:18,865 INFO L249 McrAutomatonBuilder]: Started intersection. [2020-11-09 17:05:18,874 INFO L252 McrAutomatonBuilder]: Finished intersection with 58 states and 106 transitions. [2020-11-09 17:05:18,874 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-11-09 17:05:18,959 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-11-09 17:05:18,960 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-11-09 17:05:18,960 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-09 17:05:18,961 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-11-09 17:05:18,962 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-11-09 17:05:18,962 INFO L87 Difference]: Start difference. First operand 55 states and 99 transitions. Second operand 5 states. [2020-11-09 17:05:19,024 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-09 17:05:19,024 INFO L93 Difference]: Finished difference Result 69 states and 121 transitions. [2020-11-09 17:05:19,025 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-11-09 17:05:19,025 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 18 [2020-11-09 17:05:19,026 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-09 17:05:19,026 INFO L225 Difference]: With dead ends: 69 [2020-11-09 17:05:19,027 INFO L226 Difference]: Without dead ends: 31 [2020-11-09 17:05:19,028 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-11-09 17:05:19,028 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2020-11-09 17:05:19,031 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 31. [2020-11-09 17:05:19,031 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2020-11-09 17:05:19,031 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 45 transitions. [2020-11-09 17:05:19,032 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 45 transitions. Word has length 18 [2020-11-09 17:05:19,032 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-09 17:05:19,032 INFO L481 AbstractCegarLoop]: Abstraction has 31 states and 45 transitions. [2020-11-09 17:05:19,032 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-11-09 17:05:19,032 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 45 transitions. [2020-11-09 17:05:19,033 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-11-09 17:05:19,033 INFO L414 BasicCegarLoop]: Found error trace [2020-11-09 17:05:19,033 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-09 17:05:19,033 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-11-09 17:05:19,034 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-09 17:05:19,034 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-09 17:05:19,034 INFO L82 PathProgramCache]: Analyzing trace with hash -1541967813, now seen corresponding path program 3 times [2020-11-09 17:05:19,036 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-09 17:05:19,036 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2029669439] [2020-11-09 17:05:19,036 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-09 17:05:19,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-09 17:05:19,112 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-09 17:05:19,112 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2029669439] [2020-11-09 17:05:19,112 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-09 17:05:19,113 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-09 17:05:19,113 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [372277107] [2020-11-09 17:05:19,113 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-11-09 17:05:19,119 INFO L249 McrAutomatonBuilder]: Started intersection. [2020-11-09 17:05:19,124 INFO L252 McrAutomatonBuilder]: Finished intersection with 40 states and 56 transitions. [2020-11-09 17:05:19,124 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-11-09 17:05:19,145 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-11-09 17:05:19,146 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-11-09 17:05:19,146 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-09 17:05:19,147 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-11-09 17:05:19,147 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-11-09 17:05:19,147 INFO L87 Difference]: Start difference. First operand 31 states and 45 transitions. Second operand 5 states. [2020-11-09 17:05:19,179 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-09 17:05:19,179 INFO L93 Difference]: Finished difference Result 30 states and 44 transitions. [2020-11-09 17:05:19,180 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-11-09 17:05:19,180 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 18 [2020-11-09 17:05:19,180 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-09 17:05:19,180 INFO L225 Difference]: With dead ends: 30 [2020-11-09 17:05:19,180 INFO L226 Difference]: Without dead ends: 0 [2020-11-09 17:05:19,181 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-11-09 17:05:19,181 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-11-09 17:05:19,181 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-11-09 17:05:19,181 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-11-09 17:05:19,182 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-11-09 17:05:19,182 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 18 [2020-11-09 17:05:19,182 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-09 17:05:19,182 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-11-09 17:05:19,182 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-11-09 17:05:19,182 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-11-09 17:05:19,183 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-11-09 17:05:19,183 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-11-09 17:05:19,186 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 09.11 05:05:19 BasicIcfg [2020-11-09 17:05:19,186 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-11-09 17:05:19,188 INFO L168 Benchmark]: Toolchain (without parser) took 7459.98 ms. Allocated memory was 151.0 MB in the beginning and 220.2 MB in the end (delta: 69.2 MB). Free memory was 124.9 MB in the beginning and 168.9 MB in the end (delta: -44.1 MB). Peak memory consumption was 26.7 MB. Max. memory is 8.0 GB. [2020-11-09 17:05:19,189 INFO L168 Benchmark]: CDTParser took 0.27 ms. Allocated memory is still 151.0 MB. Free memory was 123.7 MB in the beginning and 123.6 MB in the end (delta: 75.8 kB). There was no memory consumed. Max. memory is 8.0 GB. [2020-11-09 17:05:19,190 INFO L168 Benchmark]: CACSL2BoogieTranslator took 593.43 ms. Allocated memory is still 151.0 MB. Free memory was 124.2 MB in the beginning and 126.7 MB in the end (delta: -2.6 MB). Peak memory consumption was 29.0 MB. Max. memory is 8.0 GB. [2020-11-09 17:05:19,191 INFO L168 Benchmark]: Boogie Procedure Inliner took 84.97 ms. Allocated memory is still 151.0 MB. Free memory was 126.7 MB in the beginning and 125.1 MB in the end (delta: 1.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2020-11-09 17:05:19,192 INFO L168 Benchmark]: Boogie Preprocessor took 58.76 ms. Allocated memory is still 151.0 MB. Free memory was 125.1 MB in the beginning and 123.6 MB in the end (delta: 1.5 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2020-11-09 17:05:19,193 INFO L168 Benchmark]: RCFGBuilder took 813.50 ms. Allocated memory is still 151.0 MB. Free memory was 123.6 MB in the beginning and 101.1 MB in the end (delta: 22.5 MB). Peak memory consumption was 22.0 MB. Max. memory is 8.0 GB. [2020-11-09 17:05:19,194 INFO L168 Benchmark]: TraceAbstraction took 5891.84 ms. Allocated memory was 151.0 MB in the beginning and 220.2 MB in the end (delta: 69.2 MB). Free memory was 100.5 MB in the beginning and 168.9 MB in the end (delta: -68.4 MB). Peak memory consumption was 796.2 kB. Max. memory is 8.0 GB. [2020-11-09 17:05:19,198 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.27 ms. Allocated memory is still 151.0 MB. Free memory was 123.7 MB in the beginning and 123.6 MB in the end (delta: 75.8 kB). There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 593.43 ms. Allocated memory is still 151.0 MB. Free memory was 124.2 MB in the beginning and 126.7 MB in the end (delta: -2.6 MB). Peak memory consumption was 29.0 MB. Max. memory is 8.0 GB. * Boogie Procedure Inliner took 84.97 ms. Allocated memory is still 151.0 MB. Free memory was 126.7 MB in the beginning and 125.1 MB in the end (delta: 1.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 58.76 ms. Allocated memory is still 151.0 MB. Free memory was 125.1 MB in the beginning and 123.6 MB in the end (delta: 1.5 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * RCFGBuilder took 813.50 ms. Allocated memory is still 151.0 MB. Free memory was 123.6 MB in the beginning and 101.1 MB in the end (delta: 22.5 MB). Peak memory consumption was 22.0 MB. Max. memory is 8.0 GB. * TraceAbstraction took 5891.84 ms. Allocated memory was 151.0 MB in the beginning and 220.2 MB in the end (delta: 69.2 MB). Free memory was 100.5 MB in the beginning and 168.9 MB in the end (delta: -68.4 MB). Peak memory consumption was 796.2 kB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks 812 VarBasedMoverChecksPositive, 21 VarBasedMoverChecksNegative, 0 SemBasedMoverChecksPositive, 0 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.0s, 56 CheckedPairsTotal, LiptonReductionStatistics: ReductionTime: 3.6s, 86 PlacesBefore, 32 PlacesAfterwards, 79 TransitionsBefore, 23 TransitionsAfterwards, 1440 CoEnabledTransitionPairs, 6 FixpointIterations, 18 TrivialSequentialCompositions, 38 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 13 ConcurrentYvCompositions, 2 ChoiceCompositions, 71 TotalNumberOfCompositions, 2822 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, 77 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 5.7s, OverallIterations: 7, TraceHistogramMax: 1, AutomataDifference: 0.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 3.6s, HoareTripleCheckerStatistics: 129 SDtfs, 78 SDslu, 191 SDs, 0 SdLazy, 61 SolverSat, 13 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 90 GetRequests, 63 SyntacticMatches, 6 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 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, 7 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 0.4s InterpolantComputationTime, 98 NumberOfCodeBlocks, 98 NumberOfCodeBlocksAsserted, 7 NumberOfCheckSat, 91 ConstructedInterpolants, 0 QuantifiedInterpolants, 3355 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 7 InterpolantComputations, 7 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...