/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/safe014_pso.oepc.i -------------------------------------------------------------------------------- This is Ultimate 0.2.0-7a177ad [2020-11-09 17:05:14,486 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-09 17:05:14,489 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-09 17:05:14,550 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-09 17:05:14,551 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-09 17:05:14,556 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-09 17:05:14,560 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-09 17:05:14,570 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-09 17:05:14,574 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-09 17:05:14,580 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-09 17:05:14,581 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-09 17:05:14,583 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-09 17:05:14,583 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-09 17:05:14,587 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-09 17:05:14,589 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-09 17:05:14,591 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-09 17:05:14,592 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-09 17:05:14,596 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-09 17:05:14,616 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-09 17:05:14,624 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-09 17:05:14,627 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-09 17:05:14,629 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-09 17:05:14,630 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-09 17:05:14,633 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-09 17:05:14,639 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-11-09 17:05:14,644 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-09 17:05:14,645 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-09 17:05:14,647 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-09 17:05:14,648 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-09 17:05:14,649 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-09 17:05:14,650 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-09 17:05:14,650 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-09 17:05:14,651 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-09 17:05:14,651 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-09 17:05:14,652 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-09 17:05:14,653 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-09 17:05:14,654 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 17:05:14,718 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-09 17:05:14,718 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-09 17:05:14,722 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-11-09 17:05:14,723 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-11-09 17:05:14,723 INFO L138 SettingsManager]: * Use SBE=true [2020-11-09 17:05:14,723 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-09 17:05:14,723 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-09 17:05:14,724 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-11-09 17:05:14,724 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-09 17:05:14,724 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-09 17:05:14,725 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-11-09 17:05:14,726 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-09 17:05:14,726 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-11-09 17:05:14,726 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-09 17:05:14,726 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-09 17:05:14,727 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-09 17:05:14,727 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-11-09 17:05:14,727 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-09 17:05:14,727 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-11-09 17:05:14,727 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-09 17:05:14,728 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-11-09 17:05:14,728 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-09 17:05:14,728 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-09 17:05:14,728 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=Craig_NestedInterpolation [2020-11-09 17:05:14,729 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-11-09 17:05:14,729 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-11-09 17:05:14,729 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-11-09 17:05:14,729 INFO L138 SettingsManager]: * Override the interpolant automaton setting of the refinement strategy=true [2020-11-09 17:05:14,730 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=VARIABLE_BASED_MOVER_CHECK [2020-11-09 17:05:14,730 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-11-09 17:05:14,730 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2020-11-09 17:05:15,168 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-09 17:05:15,195 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-09 17:05:15,198 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-09 17:05:15,200 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-09 17:05:15,200 INFO L275 PluginConnector]: CDTParser initialized [2020-11-09 17:05:15,201 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe014_pso.oepc.i [2020-11-09 17:05:15,287 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0f61b7f21/8e604efb2d1143c784a1eb2a860d0a1e/FLAG0202091e7 [2020-11-09 17:05:15,938 INFO L306 CDTParser]: Found 1 translation units. [2020-11-09 17:05:15,939 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe014_pso.oepc.i [2020-11-09 17:05:15,957 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0f61b7f21/8e604efb2d1143c784a1eb2a860d0a1e/FLAG0202091e7 [2020-11-09 17:05:16,241 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0f61b7f21/8e604efb2d1143c784a1eb2a860d0a1e [2020-11-09 17:05:16,246 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-09 17:05:16,258 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2020-11-09 17:05:16,263 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-09 17:05:16,263 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-09 17:05:16,268 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-09 17:05:16,269 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.11 05:05:16" (1/1) ... [2020-11-09 17:05:16,273 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@69771613 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 05:05:16, skipping insertion in model container [2020-11-09 17:05:16,274 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.11 05:05:16" (1/1) ... [2020-11-09 17:05:16,283 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-09 17:05:16,357 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-09 17:05:16,712 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-09 17:05:16,728 INFO L203 MainTranslator]: Completed pre-run [2020-11-09 17:05:16,832 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-09 17:05:17,009 INFO L208 MainTranslator]: Completed translation [2020-11-09 17:05:17,010 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 05:05:17 WrapperNode [2020-11-09 17:05:17,010 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-09 17:05:17,012 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-11-09 17:05:17,012 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-11-09 17:05:17,012 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-11-09 17:05:17,025 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 05:05:17" (1/1) ... [2020-11-09 17:05:17,069 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 05:05:17" (1/1) ... [2020-11-09 17:05:17,108 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-11-09 17:05:17,114 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-09 17:05:17,114 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-09 17:05:17,114 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-09 17:05:17,124 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 05:05:17" (1/1) ... [2020-11-09 17:05:17,124 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 05:05:17" (1/1) ... [2020-11-09 17:05:17,138 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 05:05:17" (1/1) ... [2020-11-09 17:05:17,139 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 05:05:17" (1/1) ... [2020-11-09 17:05:17,157 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 05:05:17" (1/1) ... [2020-11-09 17:05:17,159 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 05:05:17" (1/1) ... [2020-11-09 17:05:17,165 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 05:05:17" (1/1) ... [2020-11-09 17:05:17,170 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-09 17:05:17,179 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-09 17:05:17,179 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-09 17:05:17,179 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-09 17:05:17,180 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 05:05:17" (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 17:05:17,256 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-11-09 17:05:17,257 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2020-11-09 17:05:17,257 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-09 17:05:17,257 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-11-09 17:05:17,257 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2020-11-09 17:05:17,257 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2020-11-09 17:05:17,257 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2020-11-09 17:05:17,258 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2020-11-09 17:05:17,258 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2020-11-09 17:05:17,258 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2020-11-09 17:05:17,258 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-11-09 17:05:17,258 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2020-11-09 17:05:17,258 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-09 17:05:17,259 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-09 17:05:17,260 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 17:05:17,784 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-09 17:05:17,784 INFO L298 CfgBuilder]: Removed 10 assume(true) statements. [2020-11-09 17:05:17,786 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.11 05:05:17 BoogieIcfgContainer [2020-11-09 17:05:17,787 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-09 17:05:17,788 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-11-09 17:05:17,789 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-11-09 17:05:17,792 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-11-09 17:05:17,793 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 09.11 05:05:16" (1/3) ... [2020-11-09 17:05:17,794 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@57142b3b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.11 05:05:17, skipping insertion in model container [2020-11-09 17:05:17,794 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 05:05:17" (2/3) ... [2020-11-09 17:05:17,794 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@57142b3b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.11 05:05:17, skipping insertion in model container [2020-11-09 17:05:17,794 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.11 05:05:17" (3/3) ... [2020-11-09 17:05:17,796 INFO L111 eAbstractionObserver]: Analyzing ICFG safe014_pso.oepc.i [2020-11-09 17:05:17,814 WARN L168 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2020-11-09 17:05:17,814 INFO L179 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-11-09 17:05:17,818 INFO L191 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-11-09 17:05:17,819 INFO L351 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2020-11-09 17:05:17,858 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 17:05:17,858 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 17:05:17,859 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 17:05:17,859 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 17:05:17,859 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 17:05:17,859 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 17:05:17,859 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 17:05:17,860 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 17:05:17,860 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 17:05:17,860 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 17:05:17,861 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 17:05:17,861 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 17:05:17,861 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 17:05:17,861 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 17:05:17,862 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 17:05:17,862 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 17:05:17,862 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 17:05:17,862 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 17:05:17,862 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 17:05:17,863 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 17:05:17,863 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 17:05:17,863 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 17:05:17,863 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 17:05:17,864 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 17:05:17,864 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 17:05:17,864 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 17:05:17,864 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 17:05:17,865 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 17:05:17,865 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 17:05:17,865 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 17:05:17,865 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 17:05:17,865 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 17:05:17,866 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 17:05:17,866 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 17:05:17,866 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 17:05:17,867 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 17:05:17,869 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 17:05:17,869 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 17:05:17,870 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 17:05:17,870 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 17:05:17,878 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 17:05:17,878 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 17:05:17,879 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 17:05:17,879 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 17:05:17,883 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 17:05:17,883 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 17:05:17,883 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 17:05:17,884 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 17:05:17,888 INFO L149 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2020-11-09 17:05:17,900 INFO L253 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2020-11-09 17:05:17,924 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-11-09 17:05:17,924 INFO L378 AbstractCegarLoop]: Hoare is true [2020-11-09 17:05:17,924 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-11-09 17:05:17,924 INFO L380 AbstractCegarLoop]: Backedges is MCR [2020-11-09 17:05:17,924 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-09 17:05:17,925 INFO L382 AbstractCegarLoop]: Difference is false [2020-11-09 17:05:17,925 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-09 17:05:17,925 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-11-09 17:05:17,937 INFO L128 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2020-11-09 17:05:17,938 INFO L135 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 86 places, 79 transitions, 173 flow [2020-11-09 17:05:17,941 INFO L110 LiptonReduction]: Starting Lipton reduction on Petri net that has 86 places, 79 transitions, 173 flow [2020-11-09 17:05:17,943 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 86 places, 79 transitions, 173 flow [2020-11-09 17:05:17,987 INFO L129 PetriNetUnfolder]: 3/76 cut-off events. [2020-11-09 17:05:17,987 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-11-09 17:05:17,992 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 57 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 17:05:17,995 INFO L116 LiptonReduction]: Number of co-enabled transitions 1440 [2020-11-09 17:05:18,561 WARN L194 SmtUtils]: Spent 116.00 ms on a formula simplification that was a NOOP. DAG size: 28 [2020-11-09 17:05:22,117 WARN L194 SmtUtils]: Spent 253.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 76 [2020-11-09 17:05:22,233 WARN L194 SmtUtils]: Spent 111.00 ms on a formula simplification that was a NOOP. DAG size: 72 [2020-11-09 17:05:22,479 WARN L194 SmtUtils]: Spent 242.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 76 [2020-11-09 17:05:22,599 WARN L194 SmtUtils]: Spent 116.00 ms on a formula simplification that was a NOOP. DAG size: 72 [2020-11-09 17:05:22,628 INFO L131 LiptonReduction]: Checked pairs total: 2779 [2020-11-09 17:05:22,628 INFO L133 LiptonReduction]: Total number of compositions: 70 [2020-11-09 17:05:22,636 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 32 places, 23 transitions, 61 flow [2020-11-09 17:05:22,667 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 362 states. [2020-11-09 17:05:22,670 INFO L276 IsEmpty]: Start isEmpty. Operand 362 states. [2020-11-09 17:05:22,677 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-11-09 17:05:22,678 INFO L414 BasicCegarLoop]: Found error trace [2020-11-09 17:05:22,679 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-11-09 17:05:22,679 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-09 17:05:22,685 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-09 17:05:22,685 INFO L82 PathProgramCache]: Analyzing trace with hash -460323677, now seen corresponding path program 1 times [2020-11-09 17:05:22,712 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-09 17:05:22,712 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [744592204] [2020-11-09 17:05:22,713 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-09 17:05:22,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-09 17:05:22,902 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 17:05:22,902 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [744592204] [2020-11-09 17:05:22,904 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-09 17:05:22,904 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-11-09 17:05:22,905 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1883920801] [2020-11-09 17:05:22,906 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-11-09 17:05:22,909 INFO L249 McrAutomatonBuilder]: Started intersection. [2020-11-09 17:05:22,921 INFO L252 McrAutomatonBuilder]: Finished intersection with 9 states and 8 transitions. [2020-11-09 17:05:22,921 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-11-09 17:05:22,926 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-11-09 17:05:22,926 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-11-09 17:05:22,927 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-09 17:05:22,941 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-11-09 17:05:22,941 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-11-09 17:05:22,943 INFO L87 Difference]: Start difference. First operand 362 states. Second operand 2 states. [2020-11-09 17:05:22,970 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-09 17:05:22,970 INFO L93 Difference]: Finished difference Result 362 states and 1072 transitions. [2020-11-09 17:05:22,970 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-11-09 17:05:22,972 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 8 [2020-11-09 17:05:22,972 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-09 17:05:22,989 INFO L225 Difference]: With dead ends: 362 [2020-11-09 17:05:22,989 INFO L226 Difference]: Without dead ends: 298 [2020-11-09 17:05:22,990 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 17:05:23,018 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 298 states. [2020-11-09 17:05:23,071 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 298 to 298. [2020-11-09 17:05:23,073 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 298 states. [2020-11-09 17:05:23,079 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 298 states to 298 states and 864 transitions. [2020-11-09 17:05:23,080 INFO L78 Accepts]: Start accepts. Automaton has 298 states and 864 transitions. Word has length 8 [2020-11-09 17:05:23,081 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-09 17:05:23,082 INFO L481 AbstractCegarLoop]: Abstraction has 298 states and 864 transitions. [2020-11-09 17:05:23,082 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-11-09 17:05:23,082 INFO L276 IsEmpty]: Start isEmpty. Operand 298 states and 864 transitions. [2020-11-09 17:05:23,083 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-11-09 17:05:23,084 INFO L414 BasicCegarLoop]: Found error trace [2020-11-09 17:05:23,084 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-09 17:05:23,084 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-11-09 17:05:23,084 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-09 17:05:23,085 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-09 17:05:23,085 INFO L82 PathProgramCache]: Analyzing trace with hash -1385173359, now seen corresponding path program 1 times [2020-11-09 17:05:23,087 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-09 17:05:23,088 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1354290463] [2020-11-09 17:05:23,088 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-09 17:05:23,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-09 17:05:23,307 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 17:05:23,308 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1354290463] [2020-11-09 17:05:23,308 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-09 17:05:23,308 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-11-09 17:05:23,309 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1215649237] [2020-11-09 17:05:23,309 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-11-09 17:05:23,310 INFO L249 McrAutomatonBuilder]: Started intersection. [2020-11-09 17:05:23,312 INFO L252 McrAutomatonBuilder]: Finished intersection with 10 states and 9 transitions. [2020-11-09 17:05:23,312 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-11-09 17:05:23,312 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-11-09 17:05:23,314 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-09 17:05:23,314 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-09 17:05:23,315 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-09 17:05:23,316 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-09 17:05:23,316 INFO L87 Difference]: Start difference. First operand 298 states and 864 transitions. Second operand 4 states. [2020-11-09 17:05:23,388 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-09 17:05:23,389 INFO L93 Difference]: Finished difference Result 330 states and 912 transitions. [2020-11-09 17:05:23,389 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-11-09 17:05:23,390 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 9 [2020-11-09 17:05:23,390 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-09 17:05:23,393 INFO L225 Difference]: With dead ends: 330 [2020-11-09 17:05:23,393 INFO L226 Difference]: Without dead ends: 266 [2020-11-09 17:05:23,394 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 [2020-11-09 17:05:23,398 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 266 states. [2020-11-09 17:05:23,421 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 266 to 266. [2020-11-09 17:05:23,421 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 266 states. [2020-11-09 17:05:23,424 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 266 states to 266 states and 752 transitions. [2020-11-09 17:05:23,424 INFO L78 Accepts]: Start accepts. Automaton has 266 states and 752 transitions. Word has length 9 [2020-11-09 17:05:23,424 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-09 17:05:23,425 INFO L481 AbstractCegarLoop]: Abstraction has 266 states and 752 transitions. [2020-11-09 17:05:23,425 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-09 17:05:23,425 INFO L276 IsEmpty]: Start isEmpty. Operand 266 states and 752 transitions. [2020-11-09 17:05:23,427 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-11-09 17:05:23,427 INFO L414 BasicCegarLoop]: Found error trace [2020-11-09 17:05:23,427 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-09 17:05:23,428 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-11-09 17:05:23,428 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-09 17:05:23,431 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-09 17:05:23,432 INFO L82 PathProgramCache]: Analyzing trace with hash 36377952, now seen corresponding path program 1 times [2020-11-09 17:05:23,434 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-09 17:05:23,434 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [729634807] [2020-11-09 17:05:23,434 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-09 17:05:23,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-09 17:05:23,508 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 17:05:23,509 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [729634807] [2020-11-09 17:05:23,509 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-09 17:05:23,509 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-09 17:05:23,510 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [767163352] [2020-11-09 17:05:23,510 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-11-09 17:05:23,511 INFO L249 McrAutomatonBuilder]: Started intersection. [2020-11-09 17:05:23,513 INFO L252 McrAutomatonBuilder]: Finished intersection with 14 states and 16 transitions. [2020-11-09 17:05:23,513 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-11-09 17:05:23,568 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-11-09 17:05:23,568 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-09 17:05:23,569 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-09 17:05:23,570 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-09 17:05:23,570 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-09 17:05:23,571 INFO L87 Difference]: Start difference. First operand 266 states and 752 transitions. Second operand 4 states. [2020-11-09 17:05:23,673 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-09 17:05:23,674 INFO L93 Difference]: Finished difference Result 282 states and 760 transitions. [2020-11-09 17:05:23,674 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-11-09 17:05:23,675 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 10 [2020-11-09 17:05:23,675 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-09 17:05:23,678 INFO L225 Difference]: With dead ends: 282 [2020-11-09 17:05:23,678 INFO L226 Difference]: Without dead ends: 234 [2020-11-09 17:05:23,679 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 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 17:05:23,683 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 234 states. [2020-11-09 17:05:23,713 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 234 to 234. [2020-11-09 17:05:23,714 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 234 states. [2020-11-09 17:05:23,715 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 234 states to 234 states and 640 transitions. [2020-11-09 17:05:23,716 INFO L78 Accepts]: Start accepts. Automaton has 234 states and 640 transitions. Word has length 10 [2020-11-09 17:05:23,719 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-09 17:05:23,719 INFO L481 AbstractCegarLoop]: Abstraction has 234 states and 640 transitions. [2020-11-09 17:05:23,720 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-09 17:05:23,720 INFO L276 IsEmpty]: Start isEmpty. Operand 234 states and 640 transitions. [2020-11-09 17:05:23,723 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-11-09 17:05:23,724 INFO L414 BasicCegarLoop]: Found error trace [2020-11-09 17:05:23,724 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-09 17:05:23,724 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-11-09 17:05:23,724 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-09 17:05:23,725 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-09 17:05:23,725 INFO L82 PathProgramCache]: Analyzing trace with hash 1113237188, now seen corresponding path program 1 times [2020-11-09 17:05:23,735 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-09 17:05:23,735 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1362633857] [2020-11-09 17:05:23,736 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-09 17:05:23,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-09 17:05:23,897 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 17:05:23,898 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1362633857] [2020-11-09 17:05:23,898 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-09 17:05:23,898 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-09 17:05:23,899 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1861840328] [2020-11-09 17:05:23,899 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-11-09 17:05:23,902 INFO L249 McrAutomatonBuilder]: Started intersection. [2020-11-09 17:05:23,904 INFO L252 McrAutomatonBuilder]: Finished intersection with 18 states and 23 transitions. [2020-11-09 17:05:23,904 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-11-09 17:05:23,993 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-11-09 17:05:23,993 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-11-09 17:05:23,993 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-09 17:05:23,994 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-11-09 17:05:23,994 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-11-09 17:05:23,994 INFO L87 Difference]: Start difference. First operand 234 states and 640 transitions. Second operand 5 states. [2020-11-09 17:05:24,130 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-09 17:05:24,131 INFO L93 Difference]: Finished difference Result 250 states and 660 transitions. [2020-11-09 17:05:24,135 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-11-09 17:05:24,136 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 11 [2020-11-09 17:05:24,136 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-09 17:05:24,142 INFO L225 Difference]: With dead ends: 250 [2020-11-09 17:05:24,142 INFO L226 Difference]: Without dead ends: 218 [2020-11-09 17:05:24,143 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 4 SyntacticMatches, 2 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-11-09 17:05:24,144 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 218 states. [2020-11-09 17:05:24,154 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 218 to 218. [2020-11-09 17:05:24,154 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 218 states. [2020-11-09 17:05:24,156 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 218 states to 218 states and 588 transitions. [2020-11-09 17:05:24,156 INFO L78 Accepts]: Start accepts. Automaton has 218 states and 588 transitions. Word has length 11 [2020-11-09 17:05:24,156 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-09 17:05:24,156 INFO L481 AbstractCegarLoop]: Abstraction has 218 states and 588 transitions. [2020-11-09 17:05:24,156 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-11-09 17:05:24,157 INFO L276 IsEmpty]: Start isEmpty. Operand 218 states and 588 transitions. [2020-11-09 17:05:24,162 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-11-09 17:05:24,163 INFO L414 BasicCegarLoop]: Found error trace [2020-11-09 17:05:24,163 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-09 17:05:24,163 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-11-09 17:05:24,163 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-09 17:05:24,164 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-09 17:05:24,164 INFO L82 PathProgramCache]: Analyzing trace with hash 1329445606, now seen corresponding path program 1 times [2020-11-09 17:05:24,175 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-09 17:05:24,175 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1264973931] [2020-11-09 17:05:24,175 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-09 17:05:24,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-09 17:05:24,291 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 17:05:24,292 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1264973931] [2020-11-09 17:05:24,292 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-09 17:05:24,292 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-09 17:05:24,292 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [481584423] [2020-11-09 17:05:24,293 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-11-09 17:05:24,295 INFO L249 McrAutomatonBuilder]: Started intersection. [2020-11-09 17:05:24,298 INFO L252 McrAutomatonBuilder]: Finished intersection with 32 states and 56 transitions. [2020-11-09 17:05:24,299 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-11-09 17:05:24,462 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-11-09 17:05:24,463 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-11-09 17:05:24,463 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-09 17:05:24,464 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-11-09 17:05:24,464 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-11-09 17:05:24,464 INFO L87 Difference]: Start difference. First operand 218 states and 588 transitions. Second operand 5 states. [2020-11-09 17:05:24,556 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-09 17:05:24,556 INFO L93 Difference]: Finished difference Result 266 states and 698 transitions. [2020-11-09 17:05:24,557 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-11-09 17:05:24,557 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 12 [2020-11-09 17:05:24,558 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-09 17:05:24,559 INFO L225 Difference]: With dead ends: 266 [2020-11-09 17:05:24,559 INFO L226 Difference]: Without dead ends: 116 [2020-11-09 17:05:24,559 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2020-11-09 17:05:24,560 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 116 states. [2020-11-09 17:05:24,563 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 116 to 116. [2020-11-09 17:05:24,563 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 116 states. [2020-11-09 17:05:24,564 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 116 states to 116 states and 278 transitions. [2020-11-09 17:05:24,564 INFO L78 Accepts]: Start accepts. Automaton has 116 states and 278 transitions. Word has length 12 [2020-11-09 17:05:24,564 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-09 17:05:24,565 INFO L481 AbstractCegarLoop]: Abstraction has 116 states and 278 transitions. [2020-11-09 17:05:24,565 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-11-09 17:05:24,565 INFO L276 IsEmpty]: Start isEmpty. Operand 116 states and 278 transitions. [2020-11-09 17:05:24,565 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-11-09 17:05:24,566 INFO L414 BasicCegarLoop]: Found error trace [2020-11-09 17:05:24,566 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-09 17:05:24,566 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-11-09 17:05:24,566 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-09 17:05:24,567 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-09 17:05:24,567 INFO L82 PathProgramCache]: Analyzing trace with hash -1405608924, now seen corresponding path program 1 times [2020-11-09 17:05:24,572 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-09 17:05:24,572 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1800510991] [2020-11-09 17:05:24,572 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-09 17:05:24,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-09 17:05:24,668 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 17:05:24,669 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1800510991] [2020-11-09 17:05:24,669 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-09 17:05:24,669 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-09 17:05:24,669 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [619618873] [2020-11-09 17:05:24,670 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-11-09 17:05:24,673 INFO L249 McrAutomatonBuilder]: Started intersection. [2020-11-09 17:05:24,677 INFO L252 McrAutomatonBuilder]: Finished intersection with 24 states and 32 transitions. [2020-11-09 17:05:24,677 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-11-09 17:05:24,691 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 2, 2, 1] term [2020-11-09 17:05:24,691 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-11-09 17:05:24,704 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 2, 2, 1] term [2020-11-09 17:05:24,705 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-11-09 17:05:24,714 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 2, 2, 1] term [2020-11-09 17:05:24,715 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-11-09 17:05:24,728 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 2, 2, 1] term [2020-11-09 17:05:24,729 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-11-09 17:05:24,764 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 1 new interpolants: [4605#(not (= 3 ~__unbuffered_cnt~0))] [2020-11-09 17:05:24,765 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-11-09 17:05:24,766 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-09 17:05:24,766 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-11-09 17:05:24,766 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-11-09 17:05:24,767 INFO L87 Difference]: Start difference. First operand 116 states and 278 transitions. Second operand 5 states. [2020-11-09 17:05:24,842 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-09 17:05:24,842 INFO L93 Difference]: Finished difference Result 110 states and 239 transitions. [2020-11-09 17:05:24,844 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-11-09 17:05:24,845 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 14 [2020-11-09 17:05:24,845 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-09 17:05:24,846 INFO L225 Difference]: With dead ends: 110 [2020-11-09 17:05:24,846 INFO L226 Difference]: Without dead ends: 70 [2020-11-09 17:05:24,846 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 7 SyntacticMatches, 2 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-11-09 17:05:24,847 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 70 states. [2020-11-09 17:05:24,849 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 70 to 70. [2020-11-09 17:05:24,850 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 70 states. [2020-11-09 17:05:24,850 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 70 states to 70 states and 129 transitions. [2020-11-09 17:05:24,853 INFO L78 Accepts]: Start accepts. Automaton has 70 states and 129 transitions. Word has length 14 [2020-11-09 17:05:24,853 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-09 17:05:24,853 INFO L481 AbstractCegarLoop]: Abstraction has 70 states and 129 transitions. [2020-11-09 17:05:24,853 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-11-09 17:05:24,854 INFO L276 IsEmpty]: Start isEmpty. Operand 70 states and 129 transitions. [2020-11-09 17:05:24,856 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-11-09 17:05:24,856 INFO L414 BasicCegarLoop]: Found error trace [2020-11-09 17:05:24,856 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-09 17:05:24,857 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-11-09 17:05:24,857 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-09 17:05:24,857 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-09 17:05:24,858 INFO L82 PathProgramCache]: Analyzing trace with hash -1628487690, now seen corresponding path program 1 times [2020-11-09 17:05:24,859 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-09 17:05:24,859 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1275047079] [2020-11-09 17:05:24,860 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-09 17:05:24,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-09 17:05:24,974 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 17:05:24,975 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1275047079] [2020-11-09 17:05:24,975 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-09 17:05:24,975 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-11-09 17:05:24,975 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [293471281] [2020-11-09 17:05:24,975 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-11-09 17:05:24,978 INFO L249 McrAutomatonBuilder]: Started intersection. [2020-11-09 17:05:24,983 INFO L252 McrAutomatonBuilder]: Finished intersection with 28 states and 38 transitions. [2020-11-09 17:05:24,984 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-11-09 17:05:24,986 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 2, 2, 1] term [2020-11-09 17:05:24,987 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-11-09 17:05:25,078 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 4 new interpolants: [4866#(not (= 3 ~__unbuffered_cnt~0)), 4867#(not (= ~__unbuffered_cnt~0 2)), 4868#(not (= ~__unbuffered_cnt~0 1)), 4869#(<= ~__unbuffered_cnt~0 0)] [2020-11-09 17:05:25,079 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-11-09 17:05:25,079 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-09 17:05:25,080 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-11-09 17:05:25,080 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2020-11-09 17:05:25,081 INFO L87 Difference]: Start difference. First operand 70 states and 129 transitions. Second operand 10 states. [2020-11-09 17:05:25,150 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-09 17:05:25,150 INFO L93 Difference]: Finished difference Result 63 states and 113 transitions. [2020-11-09 17:05:25,151 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-11-09 17:05:25,151 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 16 [2020-11-09 17:05:25,151 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-09 17:05:25,152 INFO L225 Difference]: With dead ends: 63 [2020-11-09 17:05:25,152 INFO L226 Difference]: Without dead ends: 55 [2020-11-09 17:05:25,153 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 7 SyntacticMatches, 1 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=57, Invalid=99, Unknown=0, NotChecked=0, Total=156 [2020-11-09 17:05:25,154 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55 states. [2020-11-09 17:05:25,155 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55 to 55. [2020-11-09 17:05:25,156 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 55 states. [2020-11-09 17:05:25,156 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 99 transitions. [2020-11-09 17:05:25,156 INFO L78 Accepts]: Start accepts. Automaton has 55 states and 99 transitions. Word has length 16 [2020-11-09 17:05:25,157 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-09 17:05:25,157 INFO L481 AbstractCegarLoop]: Abstraction has 55 states and 99 transitions. [2020-11-09 17:05:25,157 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-11-09 17:05:25,158 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states and 99 transitions. [2020-11-09 17:05:25,158 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-11-09 17:05:25,158 INFO L414 BasicCegarLoop]: Found error trace [2020-11-09 17:05:25,158 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 17:05:25,158 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-11-09 17:05:25,159 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-09 17:05:25,161 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-09 17:05:25,161 INFO L82 PathProgramCache]: Analyzing trace with hash -1397206146, now seen corresponding path program 1 times [2020-11-09 17:05:25,164 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-09 17:05:25,164 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1268606517] [2020-11-09 17:05:25,164 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-09 17:05:25,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-09 17:05:25,270 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 17:05:25,271 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1268606517] [2020-11-09 17:05:25,272 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-09 17:05:25,272 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-11-09 17:05:25,272 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [436738289] [2020-11-09 17:05:25,273 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-11-09 17:05:25,275 INFO L249 McrAutomatonBuilder]: Started intersection. [2020-11-09 17:05:25,281 INFO L252 McrAutomatonBuilder]: Finished intersection with 31 states and 42 transitions. [2020-11-09 17:05:25,281 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-11-09 17:05:25,329 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-11-09 17:05:25,330 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-11-09 17:05:25,330 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-09 17:05:25,330 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-11-09 17:05:25,331 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-11-09 17:05:25,331 INFO L87 Difference]: Start difference. First operand 55 states and 99 transitions. Second operand 5 states. [2020-11-09 17:05:25,373 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-09 17:05:25,373 INFO L93 Difference]: Finished difference Result 65 states and 113 transitions. [2020-11-09 17:05:25,374 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-11-09 17:05:25,374 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 18 [2020-11-09 17:05:25,374 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-09 17:05:25,375 INFO L225 Difference]: With dead ends: 65 [2020-11-09 17:05:25,375 INFO L226 Difference]: Without dead ends: 39 [2020-11-09 17:05:25,375 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 17:05:25,376 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2020-11-09 17:05:25,377 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 39. [2020-11-09 17:05:25,377 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39 states. [2020-11-09 17:05:25,377 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 63 transitions. [2020-11-09 17:05:25,377 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 63 transitions. Word has length 18 [2020-11-09 17:05:25,377 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-09 17:05:25,377 INFO L481 AbstractCegarLoop]: Abstraction has 39 states and 63 transitions. [2020-11-09 17:05:25,378 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-11-09 17:05:25,378 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 63 transitions. [2020-11-09 17:05:25,378 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-11-09 17:05:25,379 INFO L414 BasicCegarLoop]: Found error trace [2020-11-09 17:05:25,379 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 17:05:25,379 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-11-09 17:05:25,379 INFO L429 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-09 17:05:25,379 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-09 17:05:25,380 INFO L82 PathProgramCache]: Analyzing trace with hash 1171950116, now seen corresponding path program 2 times [2020-11-09 17:05:25,381 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-09 17:05:25,381 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1394236747] [2020-11-09 17:05:25,381 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-09 17:05:25,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-09 17:05:25,561 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 17:05:25,562 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1394236747] [2020-11-09 17:05:25,562 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-09 17:05:25,563 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-11-09 17:05:25,563 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [69079350] [2020-11-09 17:05:25,563 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-11-09 17:05:25,567 INFO L249 McrAutomatonBuilder]: Started intersection. [2020-11-09 17:05:25,572 INFO L252 McrAutomatonBuilder]: Finished intersection with 25 states and 30 transitions. [2020-11-09 17:05:25,572 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-11-09 17:05:25,620 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 1 new interpolants: [5211#(and (= ~__unbuffered_p0_EBX~0 1) (<= ~__unbuffered_cnt~0 0) (<= 0 ~__unbuffered_cnt~0))] [2020-11-09 17:05:25,620 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-11-09 17:05:25,621 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-09 17:05:25,621 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-11-09 17:05:25,622 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2020-11-09 17:05:25,622 INFO L87 Difference]: Start difference. First operand 39 states and 63 transitions. Second operand 11 states. [2020-11-09 17:05:25,818 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-09 17:05:25,818 INFO L93 Difference]: Finished difference Result 57 states and 91 transitions. [2020-11-09 17:05:25,818 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-11-09 17:05:25,818 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 18 [2020-11-09 17:05:25,819 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-09 17:05:25,819 INFO L225 Difference]: With dead ends: 57 [2020-11-09 17:05:25,819 INFO L226 Difference]: Without dead ends: 35 [2020-11-09 17:05:25,820 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 4 SyntacticMatches, 1 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=41, Invalid=141, Unknown=0, NotChecked=0, Total=182 [2020-11-09 17:05:25,820 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2020-11-09 17:05:25,821 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 33. [2020-11-09 17:05:25,821 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33 states. [2020-11-09 17:05:25,821 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 49 transitions. [2020-11-09 17:05:25,821 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 49 transitions. Word has length 18 [2020-11-09 17:05:25,822 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-09 17:05:25,822 INFO L481 AbstractCegarLoop]: Abstraction has 33 states and 49 transitions. [2020-11-09 17:05:25,822 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-11-09 17:05:25,822 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 49 transitions. [2020-11-09 17:05:25,822 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-11-09 17:05:25,822 INFO L414 BasicCegarLoop]: Found error trace [2020-11-09 17:05:25,822 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 17:05:25,823 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-11-09 17:05:25,823 INFO L429 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-09 17:05:25,823 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-09 17:05:25,823 INFO L82 PathProgramCache]: Analyzing trace with hash 1333208262, now seen corresponding path program 3 times [2020-11-09 17:05:25,825 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-09 17:05:25,825 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [86411136] [2020-11-09 17:05:25,825 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-09 17:05:25,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-09 17:05:25,899 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 17:05:25,899 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [86411136] [2020-11-09 17:05:25,899 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-09 17:05:25,900 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-09 17:05:25,900 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1629013384] [2020-11-09 17:05:25,901 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-11-09 17:05:25,905 INFO L249 McrAutomatonBuilder]: Started intersection. [2020-11-09 17:05:25,909 INFO L252 McrAutomatonBuilder]: Finished intersection with 25 states and 30 transitions. [2020-11-09 17:05:25,910 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-11-09 17:05:25,930 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-11-09 17:05:25,930 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-11-09 17:05:25,930 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-09 17:05:25,931 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-11-09 17:05:25,931 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-11-09 17:05:25,931 INFO L87 Difference]: Start difference. First operand 33 states and 49 transitions. Second operand 5 states. [2020-11-09 17:05:25,963 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-09 17:05:25,964 INFO L93 Difference]: Finished difference Result 32 states and 48 transitions. [2020-11-09 17:05:25,964 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-11-09 17:05:25,964 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 18 [2020-11-09 17:05:25,964 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-09 17:05:25,965 INFO L225 Difference]: With dead ends: 32 [2020-11-09 17:05:25,965 INFO L226 Difference]: Without dead ends: 0 [2020-11-09 17:05:25,965 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 6 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 17:05:25,965 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-11-09 17:05:25,965 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-11-09 17:05:25,966 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-11-09 17:05:25,966 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-11-09 17:05:25,966 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 18 [2020-11-09 17:05:25,967 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-09 17:05:25,967 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-11-09 17:05:25,967 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-11-09 17:05:25,968 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-11-09 17:05:25,968 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-11-09 17:05:25,968 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-11-09 17:05:25,974 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 09.11 05:05:25 BasicIcfg [2020-11-09 17:05:25,974 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-11-09 17:05:25,976 INFO L168 Benchmark]: Toolchain (without parser) took 9726.07 ms. Allocated memory was 155.2 MB in the beginning and 245.4 MB in the end (delta: 90.2 MB). Free memory was 129.7 MB in the beginning and 96.9 MB in the end (delta: 32.8 MB). Peak memory consumption was 124.5 MB. Max. memory is 8.0 GB. [2020-11-09 17:05:25,977 INFO L168 Benchmark]: CDTParser took 0.22 ms. Allocated memory is still 155.2 MB. Free memory was 128.2 MB in the beginning and 128.2 MB in the end (delta: 80.2 kB). There was no memory consumed. Max. memory is 8.0 GB. [2020-11-09 17:05:25,978 INFO L168 Benchmark]: CACSL2BoogieTranslator took 747.85 ms. Allocated memory is still 155.2 MB. Free memory was 129.0 MB in the beginning and 131.4 MB in the end (delta: -2.3 MB). Peak memory consumption was 29.2 MB. Max. memory is 8.0 GB. [2020-11-09 17:05:25,982 INFO L168 Benchmark]: Boogie Procedure Inliner took 100.15 ms. Allocated memory is still 155.2 MB. Free memory was 131.4 MB in the beginning and 129.8 MB in the end (delta: 1.6 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2020-11-09 17:05:25,983 INFO L168 Benchmark]: Boogie Preprocessor took 57.14 ms. Allocated memory is still 155.2 MB. Free memory was 129.8 MB in the beginning and 128.2 MB in the end (delta: 1.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2020-11-09 17:05:25,984 INFO L168 Benchmark]: RCFGBuilder took 607.79 ms. Allocated memory is still 155.2 MB. Free memory was 128.2 MB in the beginning and 106.2 MB in the end (delta: 22.0 MB). Peak memory consumption was 22.0 MB. Max. memory is 8.0 GB. [2020-11-09 17:05:25,984 INFO L168 Benchmark]: TraceAbstraction took 8185.76 ms. Allocated memory was 155.2 MB in the beginning and 245.4 MB in the end (delta: 90.2 MB). Free memory was 105.7 MB in the beginning and 96.9 MB in the end (delta: 8.8 MB). Peak memory consumption was 99.5 MB. Max. memory is 8.0 GB. [2020-11-09 17:05:25,994 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.22 ms. Allocated memory is still 155.2 MB. Free memory was 128.2 MB in the beginning and 128.2 MB in the end (delta: 80.2 kB). There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 747.85 ms. Allocated memory is still 155.2 MB. Free memory was 129.0 MB in the beginning and 131.4 MB in the end (delta: -2.3 MB). Peak memory consumption was 29.2 MB. Max. memory is 8.0 GB. * Boogie Procedure Inliner took 100.15 ms. Allocated memory is still 155.2 MB. Free memory was 131.4 MB in the beginning and 129.8 MB in the end (delta: 1.6 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 57.14 ms. Allocated memory is still 155.2 MB. Free memory was 129.8 MB in the beginning and 128.2 MB in the end (delta: 1.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * RCFGBuilder took 607.79 ms. Allocated memory is still 155.2 MB. Free memory was 128.2 MB in the beginning and 106.2 MB in the end (delta: 22.0 MB). Peak memory consumption was 22.0 MB. Max. memory is 8.0 GB. * TraceAbstraction took 8185.76 ms. Allocated memory was 155.2 MB in the beginning and 245.4 MB in the end (delta: 90.2 MB). Free memory was 105.7 MB in the beginning and 96.9 MB in the end (delta: 8.8 MB). Peak memory consumption was 99.5 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks 762 VarBasedMoverChecksPositive, 19 VarBasedMoverChecksNegative, 0 SemBasedMoverChecksPositive, 0 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.0s, 43 CheckedPairsTotal, LiptonReductionStatistics: ReductionTime: 4.6s, 86 PlacesBefore, 32 PlacesAfterwards, 79 TransitionsBefore, 23 TransitionsAfterwards, 1440 CoEnabledTransitionPairs, 5 FixpointIterations, 18 TrivialSequentialCompositions, 41 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 9 ConcurrentYvCompositions, 2 ChoiceCompositions, 70 TotalNumberOfCompositions, 2779 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: 8.0s, OverallIterations: 10, TraceHistogramMax: 1, AutomataDifference: 0.9s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 4.7s, HoareTripleCheckerStatistics: 199 SDtfs, 251 SDslu, 389 SDs, 0 SdLazy, 270 SolverSat, 62 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.3s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 127 GetRequests, 66 SyntacticMatches, 6 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 46 ImplicationChecksByTransitivity, 0.6s 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, 10 MinimizatonAttempts, 2 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 0.8s InterpolantComputationTime, 134 NumberOfCodeBlocks, 134 NumberOfCodeBlocksAsserted, 10 NumberOfCheckSat, 124 ConstructedInterpolants, 0 QuantifiedInterpolants, 6447 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 10 InterpolantComputations, 10 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...