/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/safe015_pso.oepc.i -------------------------------------------------------------------------------- This is Ultimate 0.2.0-7a177ad [2020-11-09 17:05:29,986 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-09 17:05:29,989 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-09 17:05:30,037 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-09 17:05:30,038 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-09 17:05:30,041 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-09 17:05:30,045 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-09 17:05:30,053 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-09 17:05:30,056 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-09 17:05:30,062 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-09 17:05:30,063 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-09 17:05:30,064 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-09 17:05:30,065 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-09 17:05:30,068 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-09 17:05:30,070 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-09 17:05:30,072 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-09 17:05:30,072 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-09 17:05:30,073 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-09 17:05:30,075 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-09 17:05:30,078 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-09 17:05:30,079 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-09 17:05:30,081 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-09 17:05:30,082 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-09 17:05:30,083 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-09 17:05:30,112 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-11-09 17:05:30,117 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-09 17:05:30,118 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-09 17:05:30,120 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-09 17:05:30,121 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-09 17:05:30,122 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-09 17:05:30,122 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-09 17:05:30,123 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-09 17:05:30,123 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-09 17:05:30,123 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-09 17:05:30,124 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-09 17:05:30,125 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-09 17:05:30,126 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 17:05:30,181 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-09 17:05:30,182 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-09 17:05:30,186 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-11-09 17:05:30,186 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-11-09 17:05:30,186 INFO L138 SettingsManager]: * Use SBE=true [2020-11-09 17:05:30,187 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-09 17:05:30,187 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-09 17:05:30,187 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-11-09 17:05:30,187 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-09 17:05:30,188 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-09 17:05:30,189 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-11-09 17:05:30,189 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-09 17:05:30,189 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-11-09 17:05:30,189 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-09 17:05:30,190 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-09 17:05:30,190 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-09 17:05:30,190 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-11-09 17:05:30,190 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-09 17:05:30,190 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-11-09 17:05:30,191 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-09 17:05:30,191 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-11-09 17:05:30,191 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-09 17:05:30,191 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-09 17:05:30,192 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=Craig_NestedInterpolation [2020-11-09 17:05:30,192 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-11-09 17:05:30,192 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-11-09 17:05:30,192 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-11-09 17:05:30,192 INFO L138 SettingsManager]: * Override the interpolant automaton setting of the refinement strategy=true [2020-11-09 17:05:30,193 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=VARIABLE_BASED_MOVER_CHECK [2020-11-09 17:05:30,193 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-11-09 17:05:30,193 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2020-11-09 17:05:30,549 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-09 17:05:30,586 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-09 17:05:30,590 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-09 17:05:30,591 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-09 17:05:30,592 INFO L275 PluginConnector]: CDTParser initialized [2020-11-09 17:05:30,593 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe015_pso.oepc.i [2020-11-09 17:05:30,683 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b620cab78/0daa8ab5992a48739bf14b6fe2b15662/FLAGa13577c91 [2020-11-09 17:05:31,365 INFO L306 CDTParser]: Found 1 translation units. [2020-11-09 17:05:31,366 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe015_pso.oepc.i [2020-11-09 17:05:31,390 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b620cab78/0daa8ab5992a48739bf14b6fe2b15662/FLAGa13577c91 [2020-11-09 17:05:31,663 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b620cab78/0daa8ab5992a48739bf14b6fe2b15662 [2020-11-09 17:05:31,668 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-09 17:05:31,676 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2020-11-09 17:05:31,680 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-09 17:05:31,680 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-09 17:05:31,684 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-09 17:05:31,685 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.11 05:05:31" (1/1) ... [2020-11-09 17:05:31,690 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@256c8362 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 05:05:31, skipping insertion in model container [2020-11-09 17:05:31,690 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.11 05:05:31" (1/1) ... [2020-11-09 17:05:31,699 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-09 17:05:31,767 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-09 17:05:32,236 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-09 17:05:32,249 INFO L203 MainTranslator]: Completed pre-run [2020-11-09 17:05:32,334 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-09 17:05:32,487 INFO L208 MainTranslator]: Completed translation [2020-11-09 17:05:32,488 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 05:05:32 WrapperNode [2020-11-09 17:05:32,488 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-09 17:05:32,489 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-11-09 17:05:32,489 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-11-09 17:05:32,490 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-11-09 17:05:32,501 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 05:05:32" (1/1) ... [2020-11-09 17:05:32,545 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 05:05:32" (1/1) ... [2020-11-09 17:05:32,580 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-11-09 17:05:32,582 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-09 17:05:32,582 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-09 17:05:32,582 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-09 17:05:32,591 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 05:05:32" (1/1) ... [2020-11-09 17:05:32,592 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 05:05:32" (1/1) ... [2020-11-09 17:05:32,606 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 05:05:32" (1/1) ... [2020-11-09 17:05:32,606 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 05:05:32" (1/1) ... [2020-11-09 17:05:32,622 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 05:05:32" (1/1) ... [2020-11-09 17:05:32,627 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 05:05:32" (1/1) ... [2020-11-09 17:05:32,631 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 05:05:32" (1/1) ... [2020-11-09 17:05:32,638 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-09 17:05:32,639 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-09 17:05:32,639 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-09 17:05:32,639 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-09 17:05:32,643 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 05:05:32" (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 17:05:32,734 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-11-09 17:05:32,735 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2020-11-09 17:05:32,736 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-09 17:05:32,736 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-11-09 17:05:32,737 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2020-11-09 17:05:32,737 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2020-11-09 17:05:32,738 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2020-11-09 17:05:32,738 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2020-11-09 17:05:32,739 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2020-11-09 17:05:32,739 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2020-11-09 17:05:32,739 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-11-09 17:05:32,739 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2020-11-09 17:05:32,740 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-09 17:05:32,740 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-09 17:05:32,742 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 17:05:33,206 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-09 17:05:33,206 INFO L298 CfgBuilder]: Removed 10 assume(true) statements. [2020-11-09 17:05:33,208 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.11 05:05:33 BoogieIcfgContainer [2020-11-09 17:05:33,208 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-09 17:05:33,210 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-11-09 17:05:33,210 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-11-09 17:05:33,214 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-11-09 17:05:33,214 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 09.11 05:05:31" (1/3) ... [2020-11-09 17:05:33,215 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@76939390 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.11 05:05:33, skipping insertion in model container [2020-11-09 17:05:33,215 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 05:05:32" (2/3) ... [2020-11-09 17:05:33,216 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@76939390 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.11 05:05:33, skipping insertion in model container [2020-11-09 17:05:33,216 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.11 05:05:33" (3/3) ... [2020-11-09 17:05:33,217 INFO L111 eAbstractionObserver]: Analyzing ICFG safe015_pso.oepc.i [2020-11-09 17:05:33,233 WARN L168 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2020-11-09 17:05:33,234 INFO L179 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-11-09 17:05:33,237 INFO L191 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-11-09 17:05:33,237 INFO L351 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2020-11-09 17:05:33,277 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 17:05:33,277 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 17:05:33,278 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 17:05:33,278 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 17:05:33,278 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 17:05:33,278 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 17:05:33,278 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 17:05:33,279 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 17:05:33,279 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 17:05:33,279 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 17:05:33,279 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 17:05:33,280 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 17:05:33,280 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 17:05:33,280 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 17:05:33,280 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 17:05:33,281 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 17:05:33,281 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 17:05:33,281 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 17:05:33,281 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 17:05:33,281 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 17:05:33,282 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 17:05:33,282 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 17:05:33,282 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 17:05:33,282 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 17:05:33,283 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 17:05:33,283 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 17:05:33,283 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 17:05:33,283 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 17:05:33,284 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 17:05:33,284 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 17:05:33,284 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 17:05:33,284 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 17:05:33,284 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 17:05:33,285 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 17:05:33,285 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 17:05:33,285 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 17:05:33,287 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 17:05:33,288 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 17:05:33,288 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 17:05:33,288 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 17:05:33,293 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 17:05:33,293 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 17:05:33,293 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 17:05:33,294 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 17:05:33,296 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 17:05:33,296 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 17:05:33,296 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 17:05:33,297 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 17:05:33,298 INFO L149 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2020-11-09 17:05:33,311 INFO L253 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2020-11-09 17:05:33,333 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-11-09 17:05:33,333 INFO L378 AbstractCegarLoop]: Hoare is true [2020-11-09 17:05:33,333 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-11-09 17:05:33,334 INFO L380 AbstractCegarLoop]: Backedges is MCR [2020-11-09 17:05:33,334 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-09 17:05:33,334 INFO L382 AbstractCegarLoop]: Difference is false [2020-11-09 17:05:33,334 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-09 17:05:33,334 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-11-09 17:05:33,346 INFO L128 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2020-11-09 17:05:33,347 INFO L135 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 85 places, 78 transitions, 171 flow [2020-11-09 17:05:33,350 INFO L110 LiptonReduction]: Starting Lipton reduction on Petri net that has 85 places, 78 transitions, 171 flow [2020-11-09 17:05:33,351 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 85 places, 78 transitions, 171 flow [2020-11-09 17:05:33,397 INFO L129 PetriNetUnfolder]: 3/75 cut-off events. [2020-11-09 17:05:33,398 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-11-09 17:05:33,402 INFO L84 FinitePrefix]: Finished finitePrefix Result has 85 conditions, 75 events. 3/75 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 57 event pairs, 0 based on Foata normal form. 0/71 useless extension candidates. Maximal degree in co-relation 60. Up to 2 conditions per place. [2020-11-09 17:05:33,405 INFO L116 LiptonReduction]: Number of co-enabled transitions 1440 [2020-11-09 17:05:35,524 WARN L194 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 38 DAG size of output: 36 [2020-11-09 17:05:36,449 WARN L194 SmtUtils]: Spent 126.00 ms on a formula simplification. DAG size of input: 49 DAG size of output: 44 [2020-11-09 17:05:36,652 WARN L194 SmtUtils]: Spent 159.00 ms on a formula simplification. DAG size of input: 52 DAG size of output: 47 [2020-11-09 17:05:36,803 WARN L194 SmtUtils]: Spent 111.00 ms on a formula simplification that was a NOOP. DAG size: 74 [2020-11-09 17:05:37,001 WARN L194 SmtUtils]: Spent 106.00 ms on a formula simplification that was a NOOP. DAG size: 74 [2020-11-09 17:05:37,353 WARN L194 SmtUtils]: Spent 211.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 72 [2020-11-09 17:05:37,702 WARN L194 SmtUtils]: Spent 249.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 72 [2020-11-09 17:05:37,818 WARN L194 SmtUtils]: Spent 111.00 ms on a formula simplification that was a NOOP. DAG size: 70 [2020-11-09 17:05:37,822 INFO L131 LiptonReduction]: Checked pairs total: 2774 [2020-11-09 17:05:37,823 INFO L133 LiptonReduction]: Total number of compositions: 73 [2020-11-09 17:05:37,828 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 31 places, 22 transitions, 59 flow [2020-11-09 17:05:37,858 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 298 states. [2020-11-09 17:05:37,860 INFO L276 IsEmpty]: Start isEmpty. Operand 298 states. [2020-11-09 17:05:37,867 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-11-09 17:05:37,868 INFO L414 BasicCegarLoop]: Found error trace [2020-11-09 17:05:37,868 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-11-09 17:05:37,869 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-09 17:05:37,875 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-09 17:05:37,875 INFO L82 PathProgramCache]: Analyzing trace with hash -1189021961, now seen corresponding path program 1 times [2020-11-09 17:05:37,905 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-09 17:05:37,905 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2000958854] [2020-11-09 17:05:37,905 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-09 17:05:38,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-09 17:05:38,159 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 17:05:38,160 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2000958854] [2020-11-09 17:05:38,161 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-09 17:05:38,162 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-11-09 17:05:38,163 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1623185853] [2020-11-09 17:05:38,164 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-11-09 17:05:38,171 INFO L249 McrAutomatonBuilder]: Started intersection. [2020-11-09 17:05:38,188 INFO L252 McrAutomatonBuilder]: Finished intersection with 9 states and 8 transitions. [2020-11-09 17:05:38,189 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-11-09 17:05:38,196 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-11-09 17:05:38,197 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-09 17:05:38,201 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-09 17:05:38,223 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-09 17:05:38,224 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-09 17:05:38,226 INFO L87 Difference]: Start difference. First operand 298 states. Second operand 3 states. [2020-11-09 17:05:38,328 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-09 17:05:38,328 INFO L93 Difference]: Finished difference Result 282 states and 808 transitions. [2020-11-09 17:05:38,330 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-09 17:05:38,332 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 8 [2020-11-09 17:05:38,332 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-09 17:05:38,355 INFO L225 Difference]: With dead ends: 282 [2020-11-09 17:05:38,355 INFO L226 Difference]: Without dead ends: 218 [2020-11-09 17:05:38,356 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-09 17:05:38,389 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 218 states. [2020-11-09 17:05:38,445 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 218 to 218. [2020-11-09 17:05:38,446 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 218 states. [2020-11-09 17:05:38,458 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 218 states to 218 states and 600 transitions. [2020-11-09 17:05:38,460 INFO L78 Accepts]: Start accepts. Automaton has 218 states and 600 transitions. Word has length 8 [2020-11-09 17:05:38,461 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-09 17:05:38,461 INFO L481 AbstractCegarLoop]: Abstraction has 218 states and 600 transitions. [2020-11-09 17:05:38,461 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-09 17:05:38,461 INFO L276 IsEmpty]: Start isEmpty. Operand 218 states and 600 transitions. [2020-11-09 17:05:38,464 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-11-09 17:05:38,464 INFO L414 BasicCegarLoop]: Found error trace [2020-11-09 17:05:38,464 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-09 17:05:38,465 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-11-09 17:05:38,465 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-09 17:05:38,470 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-09 17:05:38,470 INFO L82 PathProgramCache]: Analyzing trace with hash 1771488223, now seen corresponding path program 1 times [2020-11-09 17:05:38,478 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-09 17:05:38,478 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [400726788] [2020-11-09 17:05:38,479 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-09 17:05:38,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-09 17:05:38,644 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-09 17:05:38,645 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [400726788] [2020-11-09 17:05:38,645 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-09 17:05:38,645 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-11-09 17:05:38,645 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1880903405] [2020-11-09 17:05:38,646 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-11-09 17:05:38,647 INFO L249 McrAutomatonBuilder]: Started intersection. [2020-11-09 17:05:38,651 INFO L252 McrAutomatonBuilder]: Finished intersection with 13 states and 15 transitions. [2020-11-09 17:05:38,652 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-11-09 17:05:38,682 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-11-09 17:05:38,683 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-09 17:05:38,683 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-09 17:05:38,684 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-09 17:05:38,685 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-09 17:05:38,685 INFO L87 Difference]: Start difference. First operand 218 states and 600 transitions. Second operand 3 states. [2020-11-09 17:05:38,718 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-09 17:05:38,718 INFO L93 Difference]: Finished difference Result 202 states and 544 transitions. [2020-11-09 17:05:38,719 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-09 17:05:38,719 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 9 [2020-11-09 17:05:38,719 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-09 17:05:38,722 INFO L225 Difference]: With dead ends: 202 [2020-11-09 17:05:38,722 INFO L226 Difference]: Without dead ends: 202 [2020-11-09 17:05:38,723 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 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 17:05:38,727 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 202 states. [2020-11-09 17:05:38,747 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 202 to 202. [2020-11-09 17:05:38,747 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 202 states. [2020-11-09 17:05:38,751 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 202 states to 202 states and 544 transitions. [2020-11-09 17:05:38,751 INFO L78 Accepts]: Start accepts. Automaton has 202 states and 544 transitions. Word has length 9 [2020-11-09 17:05:38,751 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-09 17:05:38,751 INFO L481 AbstractCegarLoop]: Abstraction has 202 states and 544 transitions. [2020-11-09 17:05:38,751 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-09 17:05:38,752 INFO L276 IsEmpty]: Start isEmpty. Operand 202 states and 544 transitions. [2020-11-09 17:05:38,754 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-11-09 17:05:38,755 INFO L414 BasicCegarLoop]: Found error trace [2020-11-09 17:05:38,755 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-09 17:05:38,755 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-11-09 17:05:38,755 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-09 17:05:38,756 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-09 17:05:38,756 INFO L82 PathProgramCache]: Analyzing trace with hash -918442191, now seen corresponding path program 1 times [2020-11-09 17:05:38,765 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-09 17:05:38,765 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1306215911] [2020-11-09 17:05:38,765 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-09 17:05:38,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-09 17:05:38,870 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 17:05:38,871 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1306215911] [2020-11-09 17:05:38,871 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-09 17:05:38,871 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-11-09 17:05:38,871 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [877523646] [2020-11-09 17:05:38,871 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-11-09 17:05:38,873 INFO L249 McrAutomatonBuilder]: Started intersection. [2020-11-09 17:05:38,874 INFO L252 McrAutomatonBuilder]: Finished intersection with 17 states and 22 transitions. [2020-11-09 17:05:38,875 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-11-09 17:05:38,942 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-11-09 17:05:38,942 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-09 17:05:38,943 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-09 17:05:38,943 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-09 17:05:38,944 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-09 17:05:38,944 INFO L87 Difference]: Start difference. First operand 202 states and 544 transitions. Second operand 3 states. [2020-11-09 17:05:38,950 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-09 17:05:38,950 INFO L93 Difference]: Finished difference Result 194 states and 518 transitions. [2020-11-09 17:05:38,951 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-09 17:05:38,951 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 10 [2020-11-09 17:05:38,951 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-09 17:05:38,953 INFO L225 Difference]: With dead ends: 194 [2020-11-09 17:05:38,953 INFO L226 Difference]: Without dead ends: 194 [2020-11-09 17:05:38,953 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 6 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 17:05:38,955 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 194 states. [2020-11-09 17:05:38,962 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 194 to 194. [2020-11-09 17:05:38,963 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 194 states. [2020-11-09 17:05:38,964 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 194 states to 194 states and 518 transitions. [2020-11-09 17:05:38,964 INFO L78 Accepts]: Start accepts. Automaton has 194 states and 518 transitions. Word has length 10 [2020-11-09 17:05:38,964 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-09 17:05:38,964 INFO L481 AbstractCegarLoop]: Abstraction has 194 states and 518 transitions. [2020-11-09 17:05:38,965 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-09 17:05:38,965 INFO L276 IsEmpty]: Start isEmpty. Operand 194 states and 518 transitions. [2020-11-09 17:05:38,966 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-11-09 17:05:38,966 INFO L414 BasicCegarLoop]: Found error trace [2020-11-09 17:05:38,966 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-09 17:05:38,966 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-11-09 17:05:38,966 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-09 17:05:38,967 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-09 17:05:38,967 INFO L82 PathProgramCache]: Analyzing trace with hash 1592271914, now seen corresponding path program 1 times [2020-11-09 17:05:38,968 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-09 17:05:38,969 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [676673016] [2020-11-09 17:05:38,969 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-09 17:05:38,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-09 17:05:39,015 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 17:05:39,016 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [676673016] [2020-11-09 17:05:39,017 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-09 17:05:39,017 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-09 17:05:39,017 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1913379960] [2020-11-09 17:05:39,018 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-11-09 17:05:39,019 INFO L249 McrAutomatonBuilder]: Started intersection. [2020-11-09 17:05:39,021 INFO L252 McrAutomatonBuilder]: Finished intersection with 17 states and 21 transitions. [2020-11-09 17:05:39,021 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-11-09 17:05:39,031 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-11-09 17:05:39,031 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-09 17:05:39,031 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-09 17:05:39,032 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-09 17:05:39,032 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-09 17:05:39,032 INFO L87 Difference]: Start difference. First operand 194 states and 518 transitions. Second operand 4 states. [2020-11-09 17:05:39,062 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-09 17:05:39,062 INFO L93 Difference]: Finished difference Result 266 states and 704 transitions. [2020-11-09 17:05:39,063 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-11-09 17:05:39,063 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 11 [2020-11-09 17:05:39,064 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-09 17:05:39,065 INFO L225 Difference]: With dead ends: 266 [2020-11-09 17:05:39,065 INFO L226 Difference]: Without dead ends: 194 [2020-11-09 17:05:39,066 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 7 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 17:05:39,067 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 194 states. [2020-11-09 17:05:39,073 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 194 to 194. [2020-11-09 17:05:39,073 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 194 states. [2020-11-09 17:05:39,074 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 194 states to 194 states and 510 transitions. [2020-11-09 17:05:39,075 INFO L78 Accepts]: Start accepts. Automaton has 194 states and 510 transitions. Word has length 11 [2020-11-09 17:05:39,075 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-09 17:05:39,075 INFO L481 AbstractCegarLoop]: Abstraction has 194 states and 510 transitions. [2020-11-09 17:05:39,075 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-09 17:05:39,075 INFO L276 IsEmpty]: Start isEmpty. Operand 194 states and 510 transitions. [2020-11-09 17:05:39,076 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-11-09 17:05:39,076 INFO L414 BasicCegarLoop]: Found error trace [2020-11-09 17:05:39,076 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-09 17:05:39,077 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-11-09 17:05:39,077 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-09 17:05:39,077 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-09 17:05:39,077 INFO L82 PathProgramCache]: Analyzing trace with hash 1593061484, now seen corresponding path program 2 times [2020-11-09 17:05:39,078 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-09 17:05:39,079 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1298405538] [2020-11-09 17:05:39,079 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-09 17:05:39,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-09 17:05:39,145 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 17:05:39,146 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1298405538] [2020-11-09 17:05:39,146 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-09 17:05:39,146 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-11-09 17:05:39,146 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1926998885] [2020-11-09 17:05:39,147 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-11-09 17:05:39,148 INFO L249 McrAutomatonBuilder]: Started intersection. [2020-11-09 17:05:39,150 INFO L252 McrAutomatonBuilder]: Finished intersection with 19 states and 25 transitions. [2020-11-09 17:05:39,150 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-11-09 17:05:39,181 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-11-09 17:05:39,182 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-09 17:05:39,182 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-09 17:05:39,183 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-09 17:05:39,183 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-09 17:05:39,183 INFO L87 Difference]: Start difference. First operand 194 states and 510 transitions. Second operand 3 states. [2020-11-09 17:05:39,190 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-09 17:05:39,190 INFO L93 Difference]: Finished difference Result 192 states and 503 transitions. [2020-11-09 17:05:39,191 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-09 17:05:39,191 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 11 [2020-11-09 17:05:39,191 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-09 17:05:39,193 INFO L225 Difference]: With dead ends: 192 [2020-11-09 17:05:39,193 INFO L226 Difference]: Without dead ends: 192 [2020-11-09 17:05:39,193 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-09 17:05:39,194 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 192 states. [2020-11-09 17:05:39,199 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 192 to 192. [2020-11-09 17:05:39,199 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 192 states. [2020-11-09 17:05:39,200 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 192 states to 192 states and 503 transitions. [2020-11-09 17:05:39,200 INFO L78 Accepts]: Start accepts. Automaton has 192 states and 503 transitions. Word has length 11 [2020-11-09 17:05:39,200 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-09 17:05:39,200 INFO L481 AbstractCegarLoop]: Abstraction has 192 states and 503 transitions. [2020-11-09 17:05:39,200 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-09 17:05:39,200 INFO L276 IsEmpty]: Start isEmpty. Operand 192 states and 503 transitions. [2020-11-09 17:05:39,201 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-11-09 17:05:39,202 INFO L414 BasicCegarLoop]: Found error trace [2020-11-09 17:05:39,202 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-09 17:05:39,202 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-11-09 17:05:39,202 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-09 17:05:39,203 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-09 17:05:39,203 INFO L82 PathProgramCache]: Analyzing trace with hash 2140263678, now seen corresponding path program 1 times [2020-11-09 17:05:39,205 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-09 17:05:39,205 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1872529996] [2020-11-09 17:05:39,205 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-09 17:05:39,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-09 17:05:39,235 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 17:05:39,235 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1872529996] [2020-11-09 17:05:39,235 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-09 17:05:39,235 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-11-09 17:05:39,236 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [446097151] [2020-11-09 17:05:39,236 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-11-09 17:05:39,237 INFO L249 McrAutomatonBuilder]: Started intersection. [2020-11-09 17:05:39,239 INFO L252 McrAutomatonBuilder]: Finished intersection with 21 states and 28 transitions. [2020-11-09 17:05:39,239 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-11-09 17:05:39,244 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-11-09 17:05:39,245 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-09 17:05:39,245 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-09 17:05:39,245 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-09 17:05:39,246 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-09 17:05:39,246 INFO L87 Difference]: Start difference. First operand 192 states and 503 transitions. Second operand 3 states. [2020-11-09 17:05:39,259 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-09 17:05:39,259 INFO L93 Difference]: Finished difference Result 248 states and 627 transitions. [2020-11-09 17:05:39,259 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-09 17:05:39,259 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 12 [2020-11-09 17:05:39,260 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-09 17:05:39,261 INFO L225 Difference]: With dead ends: 248 [2020-11-09 17:05:39,261 INFO L226 Difference]: Without dead ends: 200 [2020-11-09 17:05:39,261 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 9 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 17:05:39,263 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 200 states. [2020-11-09 17:05:39,267 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 200 to 188. [2020-11-09 17:05:39,267 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 188 states. [2020-11-09 17:05:39,268 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 188 states to 188 states and 467 transitions. [2020-11-09 17:05:39,268 INFO L78 Accepts]: Start accepts. Automaton has 188 states and 467 transitions. Word has length 12 [2020-11-09 17:05:39,268 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-09 17:05:39,268 INFO L481 AbstractCegarLoop]: Abstraction has 188 states and 467 transitions. [2020-11-09 17:05:39,268 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-09 17:05:39,269 INFO L276 IsEmpty]: Start isEmpty. Operand 188 states and 467 transitions. [2020-11-09 17:05:39,270 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-11-09 17:05:39,270 INFO L414 BasicCegarLoop]: Found error trace [2020-11-09 17:05:39,270 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-09 17:05:39,270 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-11-09 17:05:39,270 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-09 17:05:39,271 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-09 17:05:39,271 INFO L82 PathProgramCache]: Analyzing trace with hash 2140264484, now seen corresponding path program 1 times [2020-11-09 17:05:39,272 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-09 17:05:39,272 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [824387373] [2020-11-09 17:05:39,272 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-09 17:05:39,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-09 17:05:39,345 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 17:05:39,346 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [824387373] [2020-11-09 17:05:39,346 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-09 17:05:39,346 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-11-09 17:05:39,347 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1586469365] [2020-11-09 17:05:39,347 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-11-09 17:05:39,348 INFO L249 McrAutomatonBuilder]: Started intersection. [2020-11-09 17:05:39,352 INFO L252 McrAutomatonBuilder]: Finished intersection with 35 states and 63 transitions. [2020-11-09 17:05:39,352 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-11-09 17:05:39,365 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 4 conjuncts [2020-11-09 17:05:39,401 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 4 conjuncts [2020-11-09 17:05:39,418 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 4 conjuncts [2020-11-09 17:05:39,443 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 4 conjuncts [2020-11-09 17:05:39,470 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 4 conjuncts [2020-11-09 17:05:39,493 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 4 conjuncts [2020-11-09 17:05:39,567 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 4 conjuncts [2020-11-09 17:05:39,624 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 1 new interpolants: [4470#(not (= 3 ~__unbuffered_cnt~0))] [2020-11-09 17:05:39,624 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-11-09 17:05:39,625 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-09 17:05:39,625 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-11-09 17:05:39,625 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-11-09 17:05:39,625 INFO L87 Difference]: Start difference. First operand 188 states and 467 transitions. Second operand 5 states. [2020-11-09 17:05:39,684 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-09 17:05:39,684 INFO L93 Difference]: Finished difference Result 186 states and 435 transitions. [2020-11-09 17:05:39,685 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-11-09 17:05:39,685 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 12 [2020-11-09 17:05:39,685 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-09 17:05:39,686 INFO L225 Difference]: With dead ends: 186 [2020-11-09 17:05:39,686 INFO L226 Difference]: Without dead ends: 122 [2020-11-09 17:05:39,686 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 19 SyntacticMatches, 2 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-11-09 17:05:39,687 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 122 states. [2020-11-09 17:05:39,690 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 122 to 122. [2020-11-09 17:05:39,690 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 122 states. [2020-11-09 17:05:39,691 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 122 states to 122 states and 253 transitions. [2020-11-09 17:05:39,691 INFO L78 Accepts]: Start accepts. Automaton has 122 states and 253 transitions. Word has length 12 [2020-11-09 17:05:39,691 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-09 17:05:39,691 INFO L481 AbstractCegarLoop]: Abstraction has 122 states and 253 transitions. [2020-11-09 17:05:39,691 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-11-09 17:05:39,691 INFO L276 IsEmpty]: Start isEmpty. Operand 122 states and 253 transitions. [2020-11-09 17:05:39,692 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-11-09 17:05:39,692 INFO L414 BasicCegarLoop]: Found error trace [2020-11-09 17:05:39,692 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-09 17:05:39,692 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-11-09 17:05:39,692 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-09 17:05:39,693 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-09 17:05:39,693 INFO L82 PathProgramCache]: Analyzing trace with hash 2125100997, now seen corresponding path program 1 times [2020-11-09 17:05:39,694 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-09 17:05:39,694 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [302140466] [2020-11-09 17:05:39,694 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-09 17:05:39,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-09 17:05:39,776 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 17:05:39,777 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [302140466] [2020-11-09 17:05:39,777 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-09 17:05:39,777 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-11-09 17:05:39,778 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1166609757] [2020-11-09 17:05:39,778 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-11-09 17:05:39,780 INFO L249 McrAutomatonBuilder]: Started intersection. [2020-11-09 17:05:39,785 INFO L252 McrAutomatonBuilder]: Finished intersection with 43 states and 75 transitions. [2020-11-09 17:05:39,786 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-11-09 17:05:39,797 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 4 conjuncts [2020-11-09 17:05:39,871 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 4 new interpolants: [4912#(not (= ~__unbuffered_cnt~0 2)), 4913#(not (= ~__unbuffered_cnt~0 1)), 4914#(<= ~__unbuffered_cnt~0 0), 4911#(not (= 3 ~__unbuffered_cnt~0))] [2020-11-09 17:05:39,872 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-11-09 17:05:39,872 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-09 17:05:39,872 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-11-09 17:05:39,873 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2020-11-09 17:05:39,873 INFO L87 Difference]: Start difference. First operand 122 states and 253 transitions. Second operand 10 states. [2020-11-09 17:05:39,940 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-09 17:05:39,940 INFO L93 Difference]: Finished difference Result 118 states and 243 transitions. [2020-11-09 17:05:39,941 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-11-09 17:05:39,941 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 15 [2020-11-09 17:05:39,941 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-09 17:05:39,941 INFO L225 Difference]: With dead ends: 118 [2020-11-09 17:05:39,942 INFO L226 Difference]: Without dead ends: 54 [2020-11-09 17:05:39,942 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 5 SyntacticMatches, 2 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=37, Invalid=73, Unknown=0, NotChecked=0, Total=110 [2020-11-09 17:05:39,943 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54 states. [2020-11-09 17:05:39,944 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54 to 54. [2020-11-09 17:05:39,944 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 54 states. [2020-11-09 17:05:39,944 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 97 transitions. [2020-11-09 17:05:39,945 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 97 transitions. Word has length 15 [2020-11-09 17:05:39,945 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-09 17:05:39,945 INFO L481 AbstractCegarLoop]: Abstraction has 54 states and 97 transitions. [2020-11-09 17:05:39,945 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-11-09 17:05:39,945 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 97 transitions. [2020-11-09 17:05:39,945 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-11-09 17:05:39,946 INFO L414 BasicCegarLoop]: Found error trace [2020-11-09 17:05:39,946 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-09 17:05:39,946 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-11-09 17:05:39,946 INFO L429 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-09 17:05:39,946 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-09 17:05:39,947 INFO L82 PathProgramCache]: Analyzing trace with hash 2097589764, now seen corresponding path program 1 times [2020-11-09 17:05:39,948 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-09 17:05:39,948 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [819846557] [2020-11-09 17:05:39,948 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-09 17:05:39,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-09 17:05:39,983 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 17:05:39,984 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [819846557] [2020-11-09 17:05:39,984 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-09 17:05:39,984 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-09 17:05:39,984 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1260460133] [2020-11-09 17:05:39,984 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-11-09 17:05:39,986 INFO L249 McrAutomatonBuilder]: Started intersection. [2020-11-09 17:05:39,997 INFO L252 McrAutomatonBuilder]: Finished intersection with 54 states and 97 transitions. [2020-11-09 17:05:39,997 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-11-09 17:05:40,042 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-11-09 17:05:40,043 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-09 17:05:40,043 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-09 17:05:40,044 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-09 17:05:40,044 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-09 17:05:40,044 INFO L87 Difference]: Start difference. First operand 54 states and 97 transitions. Second operand 4 states. [2020-11-09 17:05:40,065 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-09 17:05:40,066 INFO L93 Difference]: Finished difference Result 63 states and 110 transitions. [2020-11-09 17:05:40,066 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-09 17:05:40,066 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 17 [2020-11-09 17:05:40,066 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-09 17:05:40,067 INFO L225 Difference]: With dead ends: 63 [2020-11-09 17:05:40,067 INFO L226 Difference]: Without dead ends: 35 [2020-11-09 17:05:40,067 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-11-09 17:05:40,068 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2020-11-09 17:05:40,068 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 35. [2020-11-09 17:05:40,069 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2020-11-09 17:05:40,069 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 56 transitions. [2020-11-09 17:05:40,069 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 56 transitions. Word has length 17 [2020-11-09 17:05:40,069 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-09 17:05:40,069 INFO L481 AbstractCegarLoop]: Abstraction has 35 states and 56 transitions. [2020-11-09 17:05:40,069 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-09 17:05:40,069 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 56 transitions. [2020-11-09 17:05:40,070 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-11-09 17:05:40,070 INFO L414 BasicCegarLoop]: Found error trace [2020-11-09 17:05:40,070 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-09 17:05:40,070 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-11-09 17:05:40,070 INFO L429 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-09 17:05:40,071 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-09 17:05:40,071 INFO L82 PathProgramCache]: Analyzing trace with hash -281731452, now seen corresponding path program 2 times [2020-11-09 17:05:40,072 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-09 17:05:40,072 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [387012537] [2020-11-09 17:05:40,073 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-09 17:05:40,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-09 17:05:40,105 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 17:05:40,106 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [387012537] [2020-11-09 17:05:40,106 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-09 17:05:40,106 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-09 17:05:40,106 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1403054596] [2020-11-09 17:05:40,106 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-11-09 17:05:40,109 INFO L249 McrAutomatonBuilder]: Started intersection. [2020-11-09 17:05:40,116 INFO L252 McrAutomatonBuilder]: Finished intersection with 35 states and 49 transitions. [2020-11-09 17:05:40,116 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-11-09 17:05:40,127 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-11-09 17:05:40,128 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-09 17:05:40,128 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-09 17:05:40,128 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-09 17:05:40,129 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-09 17:05:40,129 INFO L87 Difference]: Start difference. First operand 35 states and 56 transitions. Second operand 4 states. [2020-11-09 17:05:40,149 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-09 17:05:40,149 INFO L93 Difference]: Finished difference Result 48 states and 77 transitions. [2020-11-09 17:05:40,150 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-11-09 17:05:40,150 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 17 [2020-11-09 17:05:40,150 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-09 17:05:40,150 INFO L225 Difference]: With dead ends: 48 [2020-11-09 17:05:40,150 INFO L226 Difference]: Without dead ends: 30 [2020-11-09 17:05:40,151 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-11-09 17:05:40,151 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2020-11-09 17:05:40,152 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 30. [2020-11-09 17:05:40,152 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2020-11-09 17:05:40,153 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 44 transitions. [2020-11-09 17:05:40,153 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 44 transitions. Word has length 17 [2020-11-09 17:05:40,153 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-09 17:05:40,153 INFO L481 AbstractCegarLoop]: Abstraction has 30 states and 44 transitions. [2020-11-09 17:05:40,153 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-09 17:05:40,153 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 44 transitions. [2020-11-09 17:05:40,154 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-11-09 17:05:40,154 INFO L414 BasicCegarLoop]: Found error trace [2020-11-09 17:05:40,154 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-09 17:05:40,154 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-11-09 17:05:40,154 INFO L429 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-09 17:05:40,155 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-09 17:05:40,155 INFO L82 PathProgramCache]: Analyzing trace with hash -766877882, now seen corresponding path program 3 times [2020-11-09 17:05:40,156 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-09 17:05:40,156 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [611364870] [2020-11-09 17:05:40,157 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-09 17:05:40,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-09 17:05:40,188 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 17:05:40,188 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [611364870] [2020-11-09 17:05:40,188 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-09 17:05:40,189 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-11-09 17:05:40,189 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1743855871] [2020-11-09 17:05:40,189 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-11-09 17:05:40,191 INFO L249 McrAutomatonBuilder]: Started intersection. [2020-11-09 17:05:40,197 INFO L252 McrAutomatonBuilder]: Finished intersection with 38 states and 53 transitions. [2020-11-09 17:05:40,197 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-11-09 17:05:40,212 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-11-09 17:05:40,212 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-09 17:05:40,212 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-09 17:05:40,213 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-09 17:05:40,213 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-09 17:05:40,213 INFO L87 Difference]: Start difference. First operand 30 states and 44 transitions. Second operand 4 states. [2020-11-09 17:05:40,228 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-09 17:05:40,228 INFO L93 Difference]: Finished difference Result 29 states and 43 transitions. [2020-11-09 17:05:40,229 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-09 17:05:40,229 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 17 [2020-11-09 17:05:40,229 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-09 17:05:40,229 INFO L225 Difference]: With dead ends: 29 [2020-11-09 17:05:40,229 INFO L226 Difference]: Without dead ends: 0 [2020-11-09 17:05:40,230 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-11-09 17:05:40,230 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-11-09 17:05:40,230 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-11-09 17:05:40,230 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-11-09 17:05:40,230 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-11-09 17:05:40,231 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 17 [2020-11-09 17:05:40,231 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-09 17:05:40,231 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-11-09 17:05:40,231 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-09 17:05:40,231 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-11-09 17:05:40,231 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-11-09 17:05:40,231 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-11-09 17:05:40,235 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 09.11 05:05:40 BasicIcfg [2020-11-09 17:05:40,235 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-11-09 17:05:40,236 INFO L168 Benchmark]: Toolchain (without parser) took 8564.92 ms. Allocated memory was 151.0 MB in the beginning and 250.6 MB in the end (delta: 99.6 MB). Free memory was 124.5 MB in the beginning and 124.8 MB in the end (delta: -267.9 kB). Peak memory consumption was 100.3 MB. Max. memory is 8.0 GB. [2020-11-09 17:05:40,237 INFO L168 Benchmark]: CDTParser took 0.18 ms. Allocated memory is still 151.0 MB. Free memory is still 124.7 MB. There was no memory consumed. Max. memory is 8.0 GB. [2020-11-09 17:05:40,237 INFO L168 Benchmark]: CACSL2BoogieTranslator took 808.44 ms. Allocated memory is still 151.0 MB. Free memory was 123.9 MB in the beginning and 128.1 MB in the end (delta: -4.2 MB). Peak memory consumption was 31.4 MB. Max. memory is 8.0 GB. [2020-11-09 17:05:40,238 INFO L168 Benchmark]: Boogie Procedure Inliner took 90.89 ms. Allocated memory is still 151.0 MB. Free memory was 128.1 MB in the beginning and 126.4 MB in the end (delta: 1.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2020-11-09 17:05:40,239 INFO L168 Benchmark]: Boogie Preprocessor took 56.18 ms. Allocated memory is still 151.0 MB. Free memory was 126.4 MB in the beginning and 125.0 MB in the end (delta: 1.4 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2020-11-09 17:05:40,239 INFO L168 Benchmark]: RCFGBuilder took 569.99 ms. Allocated memory is still 151.0 MB. Free memory was 125.0 MB in the beginning and 102.9 MB in the end (delta: 22.0 MB). Peak memory consumption was 22.0 MB. Max. memory is 8.0 GB. [2020-11-09 17:05:40,240 INFO L168 Benchmark]: TraceAbstraction took 7024.75 ms. Allocated memory was 151.0 MB in the beginning and 250.6 MB in the end (delta: 99.6 MB). Free memory was 102.4 MB in the beginning and 124.8 MB in the end (delta: -22.4 MB). Peak memory consumption was 77.2 MB. Max. memory is 8.0 GB. [2020-11-09 17:05:40,243 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.18 ms. Allocated memory is still 151.0 MB. Free memory is still 124.7 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 808.44 ms. Allocated memory is still 151.0 MB. Free memory was 123.9 MB in the beginning and 128.1 MB in the end (delta: -4.2 MB). Peak memory consumption was 31.4 MB. Max. memory is 8.0 GB. * Boogie Procedure Inliner took 90.89 ms. Allocated memory is still 151.0 MB. Free memory was 128.1 MB in the beginning and 126.4 MB in the end (delta: 1.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 56.18 ms. Allocated memory is still 151.0 MB. Free memory was 126.4 MB in the beginning and 125.0 MB in the end (delta: 1.4 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * RCFGBuilder took 569.99 ms. Allocated memory is still 151.0 MB. Free memory was 125.0 MB in the beginning and 102.9 MB in the end (delta: 22.0 MB). Peak memory consumption was 22.0 MB. Max. memory is 8.0 GB. * TraceAbstraction took 7024.75 ms. Allocated memory was 151.0 MB in the beginning and 250.6 MB in the end (delta: 99.6 MB). Free memory was 102.4 MB in the beginning and 124.8 MB in the end (delta: -22.4 MB). Peak memory consumption was 77.2 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks 780 VarBasedMoverChecksPositive, 29 VarBasedMoverChecksNegative, 0 SemBasedMoverChecksPositive, 0 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.0s, 42 CheckedPairsTotal, LiptonReductionStatistics: ReductionTime: 4.4s, 85 PlacesBefore, 31 PlacesAfterwards, 78 TransitionsBefore, 22 TransitionsAfterwards, 1440 CoEnabledTransitionPairs, 6 FixpointIterations, 17 TrivialSequentialCompositions, 45 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 9 ConcurrentYvCompositions, 2 ChoiceCompositions, 73 TotalNumberOfCompositions, 2774 MoverChecksTotal - PositiveResult [Line: 17]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 76 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 6.9s, OverallIterations: 11, TraceHistogramMax: 1, AutomataDifference: 0.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 4.5s, HoareTripleCheckerStatistics: 223 SDtfs, 144 SDslu, 241 SDs, 0 SdLazy, 129 SolverSat, 25 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 121 GetRequests, 86 SyntacticMatches, 4 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 0.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=298occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 11 MinimizatonAttempts, 12 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.5s InterpolantComputationTime, 139 NumberOfCodeBlocks, 139 NumberOfCodeBlocksAsserted, 11 NumberOfCheckSat, 128 ConstructedInterpolants, 0 QuantifiedInterpolants, 4100 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 11 InterpolantComputations, 11 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...