/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/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SequenceOfStatements --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=SMALLESTAMONGWIDE --traceabstraction.additional.smt.options tolerance=0.3 --traceabstraction.additional.smt.options log-additional-information=true --traceabstraction.additional.smt.options unknown-allowed=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf language data_model -i ../../../trunk/examples/svcomp/eca-rers2012/Problem17_label44.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-29 08:22:15,479 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-29 08:22:15,486 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-29 08:22:15,555 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-29 08:22:15,557 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-29 08:22:15,567 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-29 08:22:15,570 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-29 08:22:15,576 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-29 08:22:15,579 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-29 08:22:15,586 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-29 08:22:15,589 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-29 08:22:15,591 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-29 08:22:15,591 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-29 08:22:15,598 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-29 08:22:15,600 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-29 08:22:15,601 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-29 08:22:15,602 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-29 08:22:15,604 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-29 08:22:15,606 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-29 08:22:15,609 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-29 08:22:15,612 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-29 08:22:15,613 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-29 08:22:15,615 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-29 08:22:15,617 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-29 08:22:15,650 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-29 08:22:15,652 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-29 08:22:15,652 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-29 08:22:15,655 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-29 08:22:15,656 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-29 08:22:15,657 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-29 08:22:15,657 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-29 08:22:15,659 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-29 08:22:15,662 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-29 08:22:15,663 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-29 08:22:15,665 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-29 08:22:15,665 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-29 08:22:15,666 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-29 08:22:15,667 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-29 08:22:15,667 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-29 08:22:15,669 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-29 08:22:15,670 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-29 08:22:15,679 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-29 08:22:15,750 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-29 08:22:15,751 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-29 08:22:15,756 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-29 08:22:15,757 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-29 08:22:15,757 INFO L138 SettingsManager]: * Use SBE=true [2020-10-29 08:22:15,757 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-29 08:22:15,758 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-29 08:22:15,758 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-29 08:22:15,758 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-29 08:22:15,758 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-29 08:22:15,760 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-29 08:22:15,760 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-29 08:22:15,761 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-29 08:22:15,761 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-29 08:22:15,761 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-29 08:22:15,761 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-29 08:22:15,761 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-29 08:22:15,762 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-29 08:22:15,762 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-29 08:22:15,762 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-29 08:22:15,763 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-29 08:22:15,763 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-29 08:22:15,763 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-29 08:22:15,763 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-29 08:22:15,764 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-29 08:22:15,764 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-29 08:22:15,764 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-29 08:22:15,764 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-29 08:22:15,765 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-29 08:22:15,765 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode 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-2/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.3;log-additional-information=true;unknown-allowed=true; [2020-10-29 08:22:16,298 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-29 08:22:16,351 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-29 08:22:16,354 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-29 08:22:16,356 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-29 08:22:16,357 INFO L275 PluginConnector]: CDTParser initialized [2020-10-29 08:22:16,358 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem17_label44.c [2020-10-29 08:22:16,461 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/7cb8f01ae/ba788e82f4964d46a3374a4205536a47/FLAG77961eb26 [2020-10-29 08:22:17,680 INFO L306 CDTParser]: Found 1 translation units. [2020-10-29 08:22:17,681 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem17_label44.c [2020-10-29 08:22:17,726 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/7cb8f01ae/ba788e82f4964d46a3374a4205536a47/FLAG77961eb26 [2020-10-29 08:22:18,142 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/7cb8f01ae/ba788e82f4964d46a3374a4205536a47 [2020-10-29 08:22:18,148 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-29 08:22:18,158 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-29 08:22:18,165 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-29 08:22:18,165 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-29 08:22:18,172 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-29 08:22:18,173 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.10 08:22:18" (1/1) ... [2020-10-29 08:22:18,180 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@71be6582 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 08:22:18, skipping insertion in model container [2020-10-29 08:22:18,180 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.10 08:22:18" (1/1) ... [2020-10-29 08:22:18,190 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-29 08:22:18,295 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-29 08:22:19,479 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-29 08:22:19,491 INFO L203 MainTranslator]: Completed pre-run [2020-10-29 08:22:20,092 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-29 08:22:20,119 INFO L208 MainTranslator]: Completed translation [2020-10-29 08:22:20,120 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 08:22:20 WrapperNode [2020-10-29 08:22:20,120 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-29 08:22:20,122 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-29 08:22:20,122 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-29 08:22:20,122 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-29 08:22:20,137 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 08:22:20" (1/1) ... [2020-10-29 08:22:20,139 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 08:22:20" (1/1) ... [2020-10-29 08:22:20,215 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 08:22:20" (1/1) ... [2020-10-29 08:22:20,215 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 08:22:20" (1/1) ... [2020-10-29 08:22:20,412 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 08:22:20" (1/1) ... [2020-10-29 08:22:20,458 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 08:22:20" (1/1) ... [2020-10-29 08:22:20,504 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 08:22:20" (1/1) ... [2020-10-29 08:22:20,553 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-29 08:22:20,555 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-29 08:22:20,555 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-29 08:22:20,556 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-29 08:22:20,556 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 08:22:20" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-29 08:22:20,644 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-29 08:22:20,645 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-29 08:22:20,645 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-29 08:22:20,645 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-10-29 08:22:20,645 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2020-10-29 08:22:20,645 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-29 08:22:20,646 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-10-29 08:22:20,646 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2020-10-29 08:22:20,646 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-29 08:22:20,646 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-29 08:22:20,646 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-29 08:22:20,647 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-29 08:22:20,647 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-29 08:22:20,647 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-29 08:22:20,647 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-29 08:22:20,647 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-29 08:22:20,647 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-29 08:22:20,648 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-29 08:22:20,648 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-29 08:22:20,648 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-29 08:22:20,648 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-29 08:22:30,255 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-29 08:22:30,255 INFO L298 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-29 08:22:30,261 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 08:22:30 BoogieIcfgContainer [2020-10-29 08:22:30,261 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-29 08:22:30,265 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-29 08:22:30,266 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-29 08:22:30,270 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-29 08:22:30,270 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.10 08:22:18" (1/3) ... [2020-10-29 08:22:30,271 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@27f67158 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.10 08:22:30, skipping insertion in model container [2020-10-29 08:22:30,272 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 08:22:20" (2/3) ... [2020-10-29 08:22:30,272 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@27f67158 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.10 08:22:30, skipping insertion in model container [2020-10-29 08:22:30,272 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 08:22:30" (3/3) ... [2020-10-29 08:22:30,274 INFO L111 eAbstractionObserver]: Analyzing ICFG Problem17_label44.c [2020-10-29 08:22:30,287 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-29 08:22:30,293 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-29 08:22:30,308 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-29 08:22:30,360 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-29 08:22:30,361 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-29 08:22:30,361 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-29 08:22:30,361 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-29 08:22:30,361 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-29 08:22:30,361 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-29 08:22:30,361 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-29 08:22:30,362 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-29 08:22:30,396 INFO L276 IsEmpty]: Start isEmpty. Operand 607 states. [2020-10-29 08:22:30,404 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2020-10-29 08:22:30,404 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 08:22:30,406 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 08:22:30,406 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 08:22:30,413 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 08:22:30,413 INFO L82 PathProgramCache]: Analyzing trace with hash 409185706, now seen corresponding path program 1 times [2020-10-29 08:22:30,423 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 08:22:30,423 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [270322682] [2020-10-29 08:22:30,424 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 08:22:30,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:22:30,734 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:22:31,299 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:22:31,300 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 52 [2020-10-29 08:22:31,300 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:22:31,300 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 662 [2020-10-29 08:22:31,302 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:22:31,302 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:22:31,302 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-29 08:22:31,302 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-29 08:22:31,303 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 43 [2020-10-29 08:22:31,303 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-29 08:22:31,465 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 08:22:31,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:22:31,486 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:22:31,507 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:22:31,508 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 08:22:31,508 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:22:31,508 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 25 [2020-10-29 08:22:31,508 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:22:31,508 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:22:31,509 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 08:22:31,509 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 08:22:31,509 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 08:22:31,509 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 08:22:31,528 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 08:22:31,529 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [270322682] [2020-10-29 08:22:31,531 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 08:22:31,532 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-29 08:22:31,532 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2082020922] [2020-10-29 08:22:31,538 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-29 08:22:31,538 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 08:22:31,554 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-29 08:22:31,555 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-29 08:22:31,558 INFO L87 Difference]: Start difference. First operand 607 states. Second operand 4 states. [2020-10-29 08:22:48,444 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 08:22:48,445 INFO L93 Difference]: Finished difference Result 1694 states and 3089 transitions. [2020-10-29 08:22:48,446 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-29 08:22:48,448 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 42 [2020-10-29 08:22:48,449 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 08:22:48,489 INFO L225 Difference]: With dead ends: 1694 [2020-10-29 08:22:48,490 INFO L226 Difference]: Without dead ends: 1010 [2020-10-29 08:22:48,507 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-29 08:22:48,538 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1010 states. [2020-10-29 08:22:48,652 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1010 to 998. [2020-10-29 08:22:48,653 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 998 states. [2020-10-29 08:22:48,660 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 998 states to 998 states and 1492 transitions. [2020-10-29 08:22:48,662 INFO L78 Accepts]: Start accepts. Automaton has 998 states and 1492 transitions. Word has length 42 [2020-10-29 08:22:48,663 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 08:22:48,663 INFO L481 AbstractCegarLoop]: Abstraction has 998 states and 1492 transitions. [2020-10-29 08:22:48,663 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-29 08:22:48,664 INFO L276 IsEmpty]: Start isEmpty. Operand 998 states and 1492 transitions. [2020-10-29 08:22:48,678 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2020-10-29 08:22:48,678 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 08:22:48,679 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 08:22:48,679 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-29 08:22:48,679 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 08:22:48,680 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 08:22:48,680 INFO L82 PathProgramCache]: Analyzing trace with hash -151769929, now seen corresponding path program 1 times [2020-10-29 08:22:48,681 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 08:22:48,681 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1628546176] [2020-10-29 08:22:48,681 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 08:22:48,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:22:48,793 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:22:49,225 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:22:49,866 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:22:49,867 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 128 [2020-10-29 08:22:49,867 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 08:22:49,867 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1116 [2020-10-29 08:22:49,868 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:22:49,869 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:22:49,869 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-29 08:22:49,869 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-29 08:22:49,869 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 113 [2020-10-29 08:22:49,870 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-29 08:22:50,075 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 08:22:50,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:22:50,087 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:22:50,106 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:22:50,106 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 08:22:50,107 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:22:50,107 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-10-29 08:22:50,107 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:22:50,107 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:22:50,107 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 08:22:50,108 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 08:22:50,108 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 08:22:50,108 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 08:22:50,138 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 08:22:50,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:22:50,191 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:22:50,511 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:22:50,511 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 75 [2020-10-29 08:22:50,511 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:22:50,511 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 340 [2020-10-29 08:22:50,512 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:22:50,512 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:22:50,512 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-29 08:22:50,512 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 08:22:50,513 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 75 [2020-10-29 08:22:50,513 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 08:22:50,783 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 9 proven. 25 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 08:22:50,783 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1628546176] [2020-10-29 08:22:50,783 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 08:22:50,783 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-29 08:22:50,784 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1314882733] [2020-10-29 08:22:50,787 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-29 08:22:50,787 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 08:22:50,788 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-29 08:22:50,789 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-10-29 08:22:50,789 INFO L87 Difference]: Start difference. First operand 998 states and 1492 transitions. Second operand 8 states. [2020-10-29 08:22:51,689 WARN L193 SmtUtils]: Spent 106.00 ms on a formula simplification that was a NOOP. DAG size: 78 [2020-10-29 08:23:12,910 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 08:23:12,911 INFO L93 Difference]: Finished difference Result 3002 states and 4517 transitions. [2020-10-29 08:23:12,913 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-29 08:23:12,913 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 116 [2020-10-29 08:23:12,914 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 08:23:12,928 INFO L225 Difference]: With dead ends: 3002 [2020-10-29 08:23:12,929 INFO L226 Difference]: Without dead ends: 1967 [2020-10-29 08:23:12,935 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=42, Invalid=90, Unknown=0, NotChecked=0, Total=132 [2020-10-29 08:23:12,938 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1967 states. [2020-10-29 08:23:13,014 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1967 to 1910. [2020-10-29 08:23:13,014 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1910 states. [2020-10-29 08:23:13,028 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1910 states to 1910 states and 2749 transitions. [2020-10-29 08:23:13,028 INFO L78 Accepts]: Start accepts. Automaton has 1910 states and 2749 transitions. Word has length 116 [2020-10-29 08:23:13,029 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 08:23:13,029 INFO L481 AbstractCegarLoop]: Abstraction has 1910 states and 2749 transitions. [2020-10-29 08:23:13,029 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-29 08:23:13,029 INFO L276 IsEmpty]: Start isEmpty. Operand 1910 states and 2749 transitions. [2020-10-29 08:23:13,033 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 130 [2020-10-29 08:23:13,033 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 08:23:13,034 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 08:23:13,034 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-29 08:23:13,034 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 08:23:13,035 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 08:23:13,035 INFO L82 PathProgramCache]: Analyzing trace with hash -1872266422, now seen corresponding path program 1 times [2020-10-29 08:23:13,036 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 08:23:13,036 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2027801733] [2020-10-29 08:23:13,036 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 08:23:13,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:23:13,130 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:23:13,452 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:23:13,452 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 141 [2020-10-29 08:23:13,452 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:23:13,452 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 359 [2020-10-29 08:23:13,453 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:23:13,453 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:23:13,453 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 08:23:13,453 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 97 [2020-10-29 08:23:13,453 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 40 [2020-10-29 08:23:13,453 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:23:13,599 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 08:23:13,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:23:13,605 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:23:13,611 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:23:13,611 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 08:23:13,611 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:23:13,611 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-29 08:23:13,612 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:23:13,612 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:23:13,612 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 08:23:13,612 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 08:23:13,613 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 08:23:13,613 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 08:23:13,639 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 08:23:13,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:23:13,728 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:23:13,846 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:23:13,847 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 88 [2020-10-29 08:23:13,847 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:23:13,847 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 137 [2020-10-29 08:23:13,848 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:23:13,848 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:23:13,848 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 08:23:13,848 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 08:23:13,848 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 82 [2020-10-29 08:23:13,849 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 08:23:13,912 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 33 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 08:23:13,913 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2027801733] [2020-10-29 08:23:13,913 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 08:23:13,913 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-29 08:23:13,914 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [995482689] [2020-10-29 08:23:13,914 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-29 08:23:13,915 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 08:23:13,915 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-29 08:23:13,916 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-29 08:23:13,916 INFO L87 Difference]: Start difference. First operand 1910 states and 2749 transitions. Second operand 5 states. [2020-10-29 08:23:31,253 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 08:23:31,253 INFO L93 Difference]: Finished difference Result 5605 states and 8170 transitions. [2020-10-29 08:23:31,255 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-29 08:23:31,256 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 129 [2020-10-29 08:23:31,257 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 08:23:31,293 INFO L225 Difference]: With dead ends: 5605 [2020-10-29 08:23:31,294 INFO L226 Difference]: Without dead ends: 3701 [2020-10-29 08:23:31,302 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-29 08:23:31,309 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3701 states. [2020-10-29 08:23:31,463 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3701 to 3675. [2020-10-29 08:23:31,463 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3675 states. [2020-10-29 08:23:31,489 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3675 states to 3675 states and 5308 transitions. [2020-10-29 08:23:31,490 INFO L78 Accepts]: Start accepts. Automaton has 3675 states and 5308 transitions. Word has length 129 [2020-10-29 08:23:31,494 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 08:23:31,495 INFO L481 AbstractCegarLoop]: Abstraction has 3675 states and 5308 transitions. [2020-10-29 08:23:31,495 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-29 08:23:31,495 INFO L276 IsEmpty]: Start isEmpty. Operand 3675 states and 5308 transitions. [2020-10-29 08:23:31,509 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 139 [2020-10-29 08:23:31,509 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 08:23:31,510 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 08:23:31,514 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-29 08:23:31,514 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 08:23:31,515 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 08:23:31,515 INFO L82 PathProgramCache]: Analyzing trace with hash -1394454716, now seen corresponding path program 1 times [2020-10-29 08:23:31,516 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 08:23:31,517 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [969009332] [2020-10-29 08:23:31,518 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 08:23:31,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:23:31,620 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:23:31,726 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:23:32,158 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:23:32,713 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:23:34,130 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:23:34,733 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:23:34,733 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 150 [2020-10-29 08:23:34,733 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-29 08:23:34,733 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3152 [2020-10-29 08:23:34,734 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:23:34,734 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:23:34,734 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-29 08:23:34,734 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-29 08:23:34,734 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 100 [2020-10-29 08:23:34,735 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:23:34,899 WARN L193 SmtUtils]: Spent 112.00 ms on a formula simplification that was a NOOP. DAG size: 64 [2020-10-29 08:23:34,901 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 08:23:34,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:23:34,911 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:23:34,928 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:23:34,929 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 08:23:34,929 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:23:34,929 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-10-29 08:23:34,929 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:23:34,930 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:23:34,930 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 08:23:34,930 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 08:23:34,930 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 08:23:34,931 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 08:23:34,981 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 08:23:35,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:23:35,046 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:23:35,134 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:23:35,387 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:23:35,387 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 97 [2020-10-29 08:23:35,387 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 08:23:35,388 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 364 [2020-10-29 08:23:35,388 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:23:35,388 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:23:35,388 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 08:23:35,388 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 08:23:35,389 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 97 [2020-10-29 08:23:35,389 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 08:23:35,520 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 34 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 08:23:35,521 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [969009332] [2020-10-29 08:23:35,522 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 08:23:35,522 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-29 08:23:35,522 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [313033009] [2020-10-29 08:23:35,523 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-29 08:23:35,524 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 08:23:35,525 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-29 08:23:35,525 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-29 08:23:35,525 INFO L87 Difference]: Start difference. First operand 3675 states and 5308 transitions. Second operand 7 states. [2020-10-29 08:23:35,719 WARN L193 SmtUtils]: Spent 132.00 ms on a formula simplification that was a NOOP. DAG size: 68 [2020-10-29 08:23:54,788 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 08:23:54,789 INFO L93 Difference]: Finished difference Result 6090 states and 9190 transitions. [2020-10-29 08:23:54,794 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-29 08:23:54,794 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 138 [2020-10-29 08:23:54,795 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 08:23:54,810 INFO L225 Difference]: With dead ends: 6090 [2020-10-29 08:23:54,810 INFO L226 Difference]: Without dead ends: 2421 [2020-10-29 08:23:54,819 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=31, Invalid=59, Unknown=0, NotChecked=0, Total=90 [2020-10-29 08:23:54,822 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2421 states. [2020-10-29 08:23:54,892 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2421 to 2352. [2020-10-29 08:23:54,892 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2352 states. [2020-10-29 08:23:54,902 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2352 states to 2352 states and 3697 transitions. [2020-10-29 08:23:54,903 INFO L78 Accepts]: Start accepts. Automaton has 2352 states and 3697 transitions. Word has length 138 [2020-10-29 08:23:54,903 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 08:23:54,904 INFO L481 AbstractCegarLoop]: Abstraction has 2352 states and 3697 transitions. [2020-10-29 08:23:54,904 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-29 08:23:54,904 INFO L276 IsEmpty]: Start isEmpty. Operand 2352 states and 3697 transitions. [2020-10-29 08:23:54,907 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 205 [2020-10-29 08:23:54,907 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 08:23:54,908 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 08:23:54,908 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-29 08:23:54,908 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 08:23:54,908 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 08:23:54,909 INFO L82 PathProgramCache]: Analyzing trace with hash -517862526, now seen corresponding path program 1 times [2020-10-29 08:23:54,909 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 08:23:54,909 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1913196402] [2020-10-29 08:23:54,909 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 08:23:54,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:23:55,034 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:23:55,167 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:23:55,768 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:23:56,893 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:24:00,003 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:24:00,003 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 218 [2020-10-29 08:24:00,004 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-29 08:24:00,004 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5010 [2020-10-29 08:24:00,004 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:24:00,004 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:24:00,004 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-29 08:24:00,005 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-29 08:24:00,005 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 170 [2020-10-29 08:24:00,005 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:24:00,195 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 08:24:00,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:24:00,205 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:24:00,217 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:24:00,217 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 08:24:00,217 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:24:00,218 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-29 08:24:00,218 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:24:00,218 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:24:00,218 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 08:24:00,218 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 08:24:00,219 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 08:24:00,219 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 08:24:00,255 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 08:24:00,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:24:00,302 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:24:00,527 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:24:00,527 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 88 [2020-10-29 08:24:00,527 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:24:00,528 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 244 [2020-10-29 08:24:00,528 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:24:00,528 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:24:00,531 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-29 08:24:00,532 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 08:24:00,532 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 88 [2020-10-29 08:24:00,532 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-10-29 08:24:00,637 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-10-29 08:24:00,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:24:00,693 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:24:00,873 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:24:00,873 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-10-29 08:24:00,874 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:24:00,876 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 198 [2020-10-29 08:24:00,876 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:24:00,877 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:24:00,877 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 08:24:00,877 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 08:24:00,877 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 76 [2020-10-29 08:24:00,877 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:24:01,173 INFO L134 CoverageAnalysis]: Checked inductivity of 143 backedges. 69 proven. 73 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-29 08:24:01,174 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1913196402] [2020-10-29 08:24:01,175 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 08:24:01,175 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-10-29 08:24:01,176 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1995869549] [2020-10-29 08:24:01,176 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-29 08:24:01,177 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 08:24:01,177 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-29 08:24:01,178 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2020-10-29 08:24:01,178 INFO L87 Difference]: Start difference. First operand 2352 states and 3697 transitions. Second operand 10 states. [2020-10-29 08:24:01,421 WARN L193 SmtUtils]: Spent 188.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 66 [2020-10-29 08:24:24,750 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 08:24:24,750 INFO L93 Difference]: Finished difference Result 5313 states and 8975 transitions. [2020-10-29 08:24:24,752 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-10-29 08:24:24,752 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 204 [2020-10-29 08:24:24,753 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 08:24:24,775 INFO L225 Difference]: With dead ends: 5313 [2020-10-29 08:24:24,776 INFO L226 Difference]: Without dead ends: 3400 [2020-10-29 08:24:24,783 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 50 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=97, Invalid=283, Unknown=0, NotChecked=0, Total=380 [2020-10-29 08:24:24,788 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3400 states. [2020-10-29 08:24:24,903 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3400 to 2822. [2020-10-29 08:24:24,903 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2822 states. [2020-10-29 08:24:24,915 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2822 states to 2822 states and 4235 transitions. [2020-10-29 08:24:24,916 INFO L78 Accepts]: Start accepts. Automaton has 2822 states and 4235 transitions. Word has length 204 [2020-10-29 08:24:24,917 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 08:24:24,917 INFO L481 AbstractCegarLoop]: Abstraction has 2822 states and 4235 transitions. [2020-10-29 08:24:24,917 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-29 08:24:24,917 INFO L276 IsEmpty]: Start isEmpty. Operand 2822 states and 4235 transitions. [2020-10-29 08:24:24,921 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 209 [2020-10-29 08:24:24,922 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 08:24:24,922 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 08:24:24,922 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-29 08:24:24,923 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 08:24:24,924 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 08:24:24,924 INFO L82 PathProgramCache]: Analyzing trace with hash -330406214, now seen corresponding path program 1 times [2020-10-29 08:24:24,925 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 08:24:24,925 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1442121404] [2020-10-29 08:24:24,925 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 08:24:24,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:24:25,032 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:24:25,420 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:24:26,185 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:24:26,185 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 222 [2020-10-29 08:24:26,186 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 08:24:26,186 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1198 [2020-10-29 08:24:26,186 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:24:26,186 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:24:26,186 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 08:24:26,186 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 97 [2020-10-29 08:24:26,186 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 82 [2020-10-29 08:24:26,187 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:24:26,332 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 08:24:26,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:24:26,338 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:24:26,346 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:24:26,346 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 08:24:26,346 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:24:26,346 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-29 08:24:26,347 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:24:26,347 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:24:26,347 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 08:24:26,347 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 08:24:26,347 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 08:24:26,347 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:24:26,378 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 08:24:26,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:24:26,417 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:24:26,509 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:24:26,509 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 88 [2020-10-29 08:24:26,509 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:24:26,510 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 107 [2020-10-29 08:24:26,510 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:24:26,510 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:24:26,510 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 08:24:26,510 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 08:24:26,510 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 82 [2020-10-29 08:24:26,511 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:24:26,575 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-10-29 08:24:26,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:24:26,616 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:24:26,788 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:24:26,788 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 80 [2020-10-29 08:24:26,788 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:24:26,788 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 185 [2020-10-29 08:24:26,789 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:24:26,789 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:24:26,789 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 08:24:26,789 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 08:24:26,790 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 80 [2020-10-29 08:24:26,790 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 08:24:26,920 INFO L134 CoverageAnalysis]: Checked inductivity of 147 backedges. 144 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-29 08:24:26,921 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1442121404] [2020-10-29 08:24:26,922 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 08:24:26,923 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-29 08:24:26,923 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1397919724] [2020-10-29 08:24:26,924 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-29 08:24:26,924 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 08:24:26,926 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-29 08:24:26,926 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-29 08:24:26,927 INFO L87 Difference]: Start difference. First operand 2822 states and 4235 transitions. Second operand 7 states. [2020-10-29 08:24:46,952 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 08:24:46,955 INFO L93 Difference]: Finished difference Result 6263 states and 10450 transitions. [2020-10-29 08:24:46,958 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-29 08:24:46,958 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 208 [2020-10-29 08:24:46,959 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 08:24:46,991 INFO L225 Difference]: With dead ends: 6263 [2020-10-29 08:24:46,991 INFO L226 Difference]: Without dead ends: 4315 [2020-10-29 08:24:47,000 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2020-10-29 08:24:47,006 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4315 states. [2020-10-29 08:24:47,150 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4315 to 4224. [2020-10-29 08:24:47,153 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4224 states. [2020-10-29 08:24:47,167 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4224 states to 4224 states and 6176 transitions. [2020-10-29 08:24:47,168 INFO L78 Accepts]: Start accepts. Automaton has 4224 states and 6176 transitions. Word has length 208 [2020-10-29 08:24:47,168 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 08:24:47,168 INFO L481 AbstractCegarLoop]: Abstraction has 4224 states and 6176 transitions. [2020-10-29 08:24:47,169 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-29 08:24:47,169 INFO L276 IsEmpty]: Start isEmpty. Operand 4224 states and 6176 transitions. [2020-10-29 08:24:47,172 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 216 [2020-10-29 08:24:47,172 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 08:24:47,173 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 08:24:47,173 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-29 08:24:47,173 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 08:24:47,174 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 08:24:47,174 INFO L82 PathProgramCache]: Analyzing trace with hash 2080481336, now seen corresponding path program 1 times [2020-10-29 08:24:47,174 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 08:24:47,174 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2735944] [2020-10-29 08:24:47,175 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 08:24:47,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:24:47,316 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:24:47,429 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:24:47,599 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:24:52,284 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:24:52,285 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 229 [2020-10-29 08:24:52,285 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-29 08:24:52,285 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5009 [2020-10-29 08:24:52,285 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:24:52,285 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:24:52,285 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-29 08:24:52,286 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 97 [2020-10-29 08:24:52,286 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 128 [2020-10-29 08:24:52,286 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:24:52,457 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 08:24:52,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:24:52,462 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:24:52,468 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:24:52,469 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 08:24:52,469 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:24:52,469 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-29 08:24:52,469 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:24:52,470 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:24:52,470 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 08:24:52,470 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 08:24:52,470 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 08:24:52,470 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:24:52,500 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 08:24:52,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:24:52,536 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:24:52,623 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:24:52,623 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 88 [2020-10-29 08:24:52,623 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:24:52,623 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 100 [2020-10-29 08:24:52,623 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:24:52,624 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:24:52,624 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 08:24:52,624 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 08:24:52,624 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 82 [2020-10-29 08:24:52,624 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:24:52,690 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-10-29 08:24:52,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:24:52,725 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:24:52,783 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:24:52,924 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:24:52,924 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 87 [2020-10-29 08:24:52,924 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 08:24:52,924 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 213 [2020-10-29 08:24:52,924 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:24:52,925 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:24:52,925 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 08:24:52,925 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 08:24:52,925 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 81 [2020-10-29 08:24:52,925 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:24:52,992 INFO L134 CoverageAnalysis]: Checked inductivity of 154 backedges. 66 proven. 2 refuted. 0 times theorem prover too weak. 86 trivial. 0 not checked. [2020-10-29 08:24:52,993 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2735944] [2020-10-29 08:24:52,993 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 08:24:52,993 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-29 08:24:52,993 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1308817099] [2020-10-29 08:24:52,994 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-29 08:24:52,995 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 08:24:52,995 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-29 08:24:52,996 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-29 08:24:52,996 INFO L87 Difference]: Start difference. First operand 4224 states and 6176 transitions. Second operand 5 states. [2020-10-29 08:25:08,721 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 08:25:08,721 INFO L93 Difference]: Finished difference Result 7578 states and 11792 transitions. [2020-10-29 08:25:08,724 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-29 08:25:08,725 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 215 [2020-10-29 08:25:08,725 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 08:25:08,748 INFO L225 Difference]: With dead ends: 7578 [2020-10-29 08:25:08,748 INFO L226 Difference]: Without dead ends: 4667 [2020-10-29 08:25:08,756 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-29 08:25:08,762 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4667 states. [2020-10-29 08:25:08,869 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4667 to 4222. [2020-10-29 08:25:08,870 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4222 states. [2020-10-29 08:25:08,880 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4222 states to 4222 states and 6167 transitions. [2020-10-29 08:25:08,882 INFO L78 Accepts]: Start accepts. Automaton has 4222 states and 6167 transitions. Word has length 215 [2020-10-29 08:25:08,883 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 08:25:08,883 INFO L481 AbstractCegarLoop]: Abstraction has 4222 states and 6167 transitions. [2020-10-29 08:25:08,883 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-29 08:25:08,883 INFO L276 IsEmpty]: Start isEmpty. Operand 4222 states and 6167 transitions. [2020-10-29 08:25:08,887 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 229 [2020-10-29 08:25:08,887 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 08:25:08,887 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 08:25:08,888 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-29 08:25:08,888 INFO L429 AbstractCegarLoop]: === Iteration 8 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 08:25:08,888 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 08:25:08,888 INFO L82 PathProgramCache]: Analyzing trace with hash 1819591529, now seen corresponding path program 1 times [2020-10-29 08:25:08,889 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 08:25:08,889 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [272325898] [2020-10-29 08:25:08,889 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 08:25:08,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:25:08,963 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:25:09,062 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:25:09,352 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:25:11,085 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:25:13,987 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:25:13,988 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 242 [2020-10-29 08:25:13,988 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-29 08:25:13,988 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5050 [2020-10-29 08:25:13,988 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:25:13,988 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:25:13,989 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-29 08:25:13,989 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-29 08:25:13,989 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 194 [2020-10-29 08:25:13,989 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 08:25:14,187 WARN L193 SmtUtils]: Spent 120.00 ms on a formula simplification that was a NOOP. DAG size: 64 [2020-10-29 08:25:14,189 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 08:25:14,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:25:14,202 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:25:14,218 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:25:14,219 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 08:25:14,219 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:25:14,219 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-10-29 08:25:14,220 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:25:14,220 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:25:14,220 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 08:25:14,221 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 08:25:14,221 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 08:25:14,221 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 08:25:14,271 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 08:25:14,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:25:14,350 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:25:14,622 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:25:14,674 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:25:14,674 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 116 [2020-10-29 08:25:14,674 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 08:25:14,675 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 357 [2020-10-29 08:25:14,675 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:25:14,675 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:25:14,675 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 08:25:14,675 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 08:25:14,675 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 116 [2020-10-29 08:25:14,676 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:25:14,769 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2020-10-29 08:25:14,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:25:14,809 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:25:14,930 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:25:14,930 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 72 [2020-10-29 08:25:14,930 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:25:14,931 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 135 [2020-10-29 08:25:14,931 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:25:14,931 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:25:14,931 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 08:25:14,932 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 08:25:14,932 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 72 [2020-10-29 08:25:14,932 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 08:25:15,048 INFO L134 CoverageAnalysis]: Checked inductivity of 139 backedges. 69 proven. 0 refuted. 0 times theorem prover too weak. 70 trivial. 0 not checked. [2020-10-29 08:25:15,049 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [272325898] [2020-10-29 08:25:15,049 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 08:25:15,049 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-29 08:25:15,050 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1050430245] [2020-10-29 08:25:15,051 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-29 08:25:15,051 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 08:25:15,051 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-29 08:25:15,052 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-29 08:25:15,052 INFO L87 Difference]: Start difference. First operand 4222 states and 6167 transitions. Second operand 7 states. [2020-10-29 08:25:15,210 WARN L193 SmtUtils]: Spent 111.00 ms on a formula simplification that was a NOOP. DAG size: 66 [2020-10-29 08:25:37,689 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 08:25:37,689 INFO L93 Difference]: Finished difference Result 8483 states and 12861 transitions. [2020-10-29 08:25:37,696 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-29 08:25:37,696 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 228 [2020-10-29 08:25:37,696 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 08:25:37,738 INFO L225 Difference]: With dead ends: 8483 [2020-10-29 08:25:37,739 INFO L226 Difference]: Without dead ends: 4702 [2020-10-29 08:25:37,752 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-29 08:25:37,760 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4702 states. [2020-10-29 08:25:37,884 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4702 to 4632. [2020-10-29 08:25:37,884 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4632 states. [2020-10-29 08:25:37,895 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4632 states to 4632 states and 6179 transitions. [2020-10-29 08:25:37,896 INFO L78 Accepts]: Start accepts. Automaton has 4632 states and 6179 transitions. Word has length 228 [2020-10-29 08:25:37,896 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 08:25:37,896 INFO L481 AbstractCegarLoop]: Abstraction has 4632 states and 6179 transitions. [2020-10-29 08:25:37,896 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-29 08:25:37,897 INFO L276 IsEmpty]: Start isEmpty. Operand 4632 states and 6179 transitions. [2020-10-29 08:25:37,902 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 279 [2020-10-29 08:25:37,902 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 08:25:37,903 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 08:25:37,903 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-29 08:25:37,903 INFO L429 AbstractCegarLoop]: === Iteration 9 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 08:25:37,903 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 08:25:37,904 INFO L82 PathProgramCache]: Analyzing trace with hash 1458282469, now seen corresponding path program 1 times [2020-10-29 08:25:37,904 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 08:25:37,910 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1970863462] [2020-10-29 08:25:37,910 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 08:25:37,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:25:38,031 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:25:38,146 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:25:38,618 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:25:40,931 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:25:43,030 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:25:43,030 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 294 [2020-10-29 08:25:43,030 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-29 08:25:43,030 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5046 [2020-10-29 08:25:43,030 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:25:43,030 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:25:43,030 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-29 08:25:43,031 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 97 [2020-10-29 08:25:43,031 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 154 [2020-10-29 08:25:43,031 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:25:43,234 WARN L193 SmtUtils]: Spent 116.00 ms on a formula simplification that was a NOOP. DAG size: 64 [2020-10-29 08:25:43,235 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 08:25:43,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:25:43,246 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:25:43,251 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:25:43,252 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 08:25:43,252 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:25:43,252 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-29 08:25:43,252 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:25:43,252 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:25:43,253 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 08:25:43,253 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 08:25:43,253 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 08:25:43,253 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:25:43,299 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 08:25:43,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:25:43,343 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:25:43,436 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:25:43,437 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 88 [2020-10-29 08:25:43,437 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:25:43,437 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 112 [2020-10-29 08:25:43,437 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:25:43,438 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:25:43,438 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 08:25:43,438 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 08:25:43,438 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 82 [2020-10-29 08:25:43,438 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:25:43,481 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-10-29 08:25:43,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:25:43,521 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:25:43,637 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:25:43,637 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 79 [2020-10-29 08:25:43,637 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:25:43,637 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 132 [2020-10-29 08:25:43,637 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:25:43,638 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:25:43,638 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 08:25:43,638 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 08:25:43,638 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 79 [2020-10-29 08:25:43,638 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:25:43,696 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 173 [2020-10-29 08:25:43,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:25:43,731 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:25:43,924 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:25:43,925 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 72 [2020-10-29 08:25:43,925 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:25:43,925 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 206 [2020-10-29 08:25:43,925 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:25:43,925 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:25:43,925 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 08:25:43,925 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 08:25:43,926 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 72 [2020-10-29 08:25:43,926 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:25:44,088 INFO L134 CoverageAnalysis]: Checked inductivity of 322 backedges. 245 proven. 70 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2020-10-29 08:25:44,089 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1970863462] [2020-10-29 08:25:44,089 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 08:25:44,089 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-29 08:25:44,089 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1334555747] [2020-10-29 08:25:44,090 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-29 08:25:44,090 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 08:25:44,091 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-29 08:25:44,091 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2020-10-29 08:25:44,091 INFO L87 Difference]: Start difference. First operand 4632 states and 6179 transitions. Second operand 8 states. [2020-10-29 08:25:45,084 WARN L193 SmtUtils]: Spent 122.00 ms on a formula simplification that was a NOOP. DAG size: 68 [2020-10-29 08:25:51,170 WARN L193 SmtUtils]: Spent 108.00 ms on a formula simplification that was a NOOP. DAG size: 68