/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=WIDESTAMONGSMALL --traceabstraction.additional.smt.options tolerance=0.6 --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 [2020-10-28 13:41:14,054 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-28 13:41:14,059 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-28 13:41:14,102 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-28 13:41:14,102 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-28 13:41:14,104 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-28 13:41:14,106 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-28 13:41:14,108 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-28 13:41:14,111 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-28 13:41:14,112 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-28 13:41:14,113 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-28 13:41:14,115 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-28 13:41:14,115 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-28 13:41:14,117 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-28 13:41:14,118 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-28 13:41:14,119 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-28 13:41:14,121 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-28 13:41:14,122 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-28 13:41:14,141 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-28 13:41:14,143 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-28 13:41:14,145 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-28 13:41:14,150 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-28 13:41:14,151 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-28 13:41:14,152 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-28 13:41:14,162 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-28 13:41:14,163 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-28 13:41:14,163 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-28 13:41:14,165 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-28 13:41:14,168 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-28 13:41:14,169 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-28 13:41:14,170 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-28 13:41:14,171 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-28 13:41:14,172 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-28 13:41:14,173 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-28 13:41:14,175 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-28 13:41:14,176 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-28 13:41:14,177 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-28 13:41:14,177 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-28 13:41:14,178 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-28 13:41:14,179 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-28 13:41:14,180 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-28 13:41:14,181 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 [2020-10-28 13:41:14,210 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-28 13:41:14,210 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-28 13:41:14,212 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-28 13:41:14,212 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-28 13:41:14,213 INFO L138 SettingsManager]: * Use SBE=true [2020-10-28 13:41:14,213 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-28 13:41:14,213 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-28 13:41:14,213 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-28 13:41:14,213 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-28 13:41:14,214 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-28 13:41:14,214 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-28 13:41:14,214 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-28 13:41:14,214 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-28 13:41:14,215 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-28 13:41:14,215 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-28 13:41:14,215 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-28 13:41:14,215 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-28 13:41:14,216 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-28 13:41:14,216 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-28 13:41:14,216 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-28 13:41:14,216 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-28 13:41:14,216 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-28 13:41:14,217 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-28 13:41:14,217 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-28 13:41:14,217 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-28 13:41:14,217 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-28 13:41:14,218 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-28 13:41:14,218 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-28 13:41:14,218 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-28 13:41:14,218 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.6;log-additional-information=true;unknown-allowed=true; [2020-10-28 13:41:14,624 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-28 13:41:14,663 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-28 13:41:14,667 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-28 13:41:14,669 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-28 13:41:14,670 INFO L275 PluginConnector]: CDTParser initialized [2020-10-28 13:41:14,671 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem17_label44.c [2020-10-28 13:41:14,765 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/0ed5c1bc9/58795f3ee61f451db337e70357725ab9/FLAGec5d13db0 [2020-10-28 13:41:15,964 INFO L306 CDTParser]: Found 1 translation units. [2020-10-28 13:41:15,966 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem17_label44.c [2020-10-28 13:41:16,006 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/0ed5c1bc9/58795f3ee61f451db337e70357725ab9/FLAGec5d13db0 [2020-10-28 13:41:16,440 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/0ed5c1bc9/58795f3ee61f451db337e70357725ab9 [2020-10-28 13:41:16,443 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-28 13:41:16,453 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-28 13:41:16,456 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-28 13:41:16,457 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-28 13:41:16,461 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-28 13:41:16,462 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 01:41:16" (1/1) ... [2020-10-28 13:41:16,468 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1cfcdfc0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 01:41:16, skipping insertion in model container [2020-10-28 13:41:16,468 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 01:41:16" (1/1) ... [2020-10-28 13:41:16,479 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-28 13:41:16,565 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-28 13:41:17,701 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-28 13:41:17,714 INFO L203 MainTranslator]: Completed pre-run [2020-10-28 13:41:18,220 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-28 13:41:18,248 INFO L208 MainTranslator]: Completed translation [2020-10-28 13:41:18,248 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 01:41:18 WrapperNode [2020-10-28 13:41:18,248 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-28 13:41:18,250 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-28 13:41:18,250 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-28 13:41:18,250 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-28 13:41:18,267 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 01:41:18" (1/1) ... [2020-10-28 13:41:18,269 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 01:41:18" (1/1) ... [2020-10-28 13:41:18,356 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 01:41:18" (1/1) ... [2020-10-28 13:41:18,357 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 01:41:18" (1/1) ... [2020-10-28 13:41:18,538 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 01:41:18" (1/1) ... [2020-10-28 13:41:18,576 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 01:41:18" (1/1) ... [2020-10-28 13:41:18,614 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 01:41:18" (1/1) ... [2020-10-28 13:41:18,653 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-28 13:41:18,655 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-28 13:41:18,655 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-28 13:41:18,655 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-28 13:41:18,656 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 01:41:18" (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 [2020-10-28 13:41:18,741 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-28 13:41:18,741 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-28 13:41:18,742 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-28 13:41:18,742 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-10-28 13:41:18,743 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2020-10-28 13:41:18,743 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-28 13:41:18,743 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-10-28 13:41:18,744 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2020-10-28 13:41:18,744 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-28 13:41:18,745 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-28 13:41:18,745 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-28 13:41:18,746 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-28 13:41:18,746 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-28 13:41:18,746 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-28 13:41:18,746 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-28 13:41:18,748 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-28 13:41:18,748 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-28 13:41:18,748 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-28 13:41:18,748 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-28 13:41:18,748 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-28 13:41:18,749 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-28 13:41:29,094 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-28 13:41:29,095 INFO L298 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-28 13:41:29,098 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 01:41:29 BoogieIcfgContainer [2020-10-28 13:41:29,098 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-28 13:41:29,101 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-28 13:41:29,101 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-28 13:41:29,105 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-28 13:41:29,105 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.10 01:41:16" (1/3) ... [2020-10-28 13:41:29,106 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5a282968 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 01:41:29, skipping insertion in model container [2020-10-28 13:41:29,106 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 01:41:18" (2/3) ... [2020-10-28 13:41:29,107 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5a282968 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 01:41:29, skipping insertion in model container [2020-10-28 13:41:29,107 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 01:41:29" (3/3) ... [2020-10-28 13:41:29,109 INFO L111 eAbstractionObserver]: Analyzing ICFG Problem17_label44.c [2020-10-28 13:41:29,123 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-28 13:41:29,132 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-28 13:41:29,148 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-28 13:41:29,202 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-28 13:41:29,202 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-28 13:41:29,202 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-28 13:41:29,202 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-28 13:41:29,203 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-28 13:41:29,203 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-28 13:41:29,203 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-28 13:41:29,205 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-28 13:41:29,245 INFO L276 IsEmpty]: Start isEmpty. Operand 607 states. [2020-10-28 13:41:29,255 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2020-10-28 13:41:29,255 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 13:41:29,256 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] [2020-10-28 13:41:29,257 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 13:41:29,262 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 13:41:29,263 INFO L82 PathProgramCache]: Analyzing trace with hash 409185706, now seen corresponding path program 1 times [2020-10-28 13:41:29,274 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 13:41:29,274 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [439192791] [2020-10-28 13:41:29,275 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 13:41:29,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:41:29,658 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:41:30,211 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:41:30,211 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 52 [2020-10-28 13:41:30,212 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:41:30,212 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 601 [2020-10-28 13:41:30,214 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:41:30,215 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:41:30,215 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 13:41:30,215 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-28 13:41:30,216 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 43 [2020-10-28 13:41:30,216 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-28 13:41:30,410 WARN L193 SmtUtils]: Spent 102.00 ms on a formula simplification that was a NOOP. DAG size: 64 [2020-10-28 13:41:30,412 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 13:41:30,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:41:30,427 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:41:30,450 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:41:30,451 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 13:41:30,451 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:41:30,451 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 28 [2020-10-28 13:41:30,451 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:41:30,452 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:41:30,452 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 13:41:30,452 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:41:30,452 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-28 13:41:30,452 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 13:41:30,470 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 13:41:30,471 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [439192791] [2020-10-28 13:41:30,473 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 13:41:30,474 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-28 13:41:30,475 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1984938719] [2020-10-28 13:41:30,480 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-28 13:41:30,480 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 13:41:30,497 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-28 13:41:30,498 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-28 13:41:30,500 INFO L87 Difference]: Start difference. First operand 607 states. Second operand 4 states. [2020-10-28 13:41:30,673 WARN L193 SmtUtils]: Spent 114.00 ms on a formula simplification that was a NOOP. DAG size: 66 [2020-10-28 13:41:45,764 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 13:41:45,765 INFO L93 Difference]: Finished difference Result 1694 states and 3089 transitions. [2020-10-28 13:41:45,766 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-28 13:41:45,768 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 42 [2020-10-28 13:41:45,768 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 13:41:45,798 INFO L225 Difference]: With dead ends: 1694 [2020-10-28 13:41:45,798 INFO L226 Difference]: Without dead ends: 1010 [2020-10-28 13:41:45,809 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-28 13:41:45,832 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1010 states. [2020-10-28 13:41:45,933 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1010 to 998. [2020-10-28 13:41:45,934 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 998 states. [2020-10-28 13:41:45,941 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 998 states to 998 states and 1492 transitions. [2020-10-28 13:41:45,943 INFO L78 Accepts]: Start accepts. Automaton has 998 states and 1492 transitions. Word has length 42 [2020-10-28 13:41:45,944 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 13:41:45,944 INFO L481 AbstractCegarLoop]: Abstraction has 998 states and 1492 transitions. [2020-10-28 13:41:45,944 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-28 13:41:45,945 INFO L276 IsEmpty]: Start isEmpty. Operand 998 states and 1492 transitions. [2020-10-28 13:41:45,950 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2020-10-28 13:41:45,951 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 13:41:45,951 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] [2020-10-28 13:41:45,952 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-28 13:41:45,952 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 13:41:45,953 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 13:41:45,953 INFO L82 PathProgramCache]: Analyzing trace with hash -151769929, now seen corresponding path program 1 times [2020-10-28 13:41:45,953 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 13:41:45,954 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [417893813] [2020-10-28 13:41:45,954 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 13:41:46,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:41:46,130 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:41:46,524 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:41:47,234 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:41:47,235 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 128 [2020-10-28 13:41:47,235 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 13:41:47,235 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1196 [2020-10-28 13:41:47,236 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:41:47,237 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:41:47,237 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 13:41:47,237 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 84 [2020-10-28 13:41:47,238 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 40 [2020-10-28 13:41:47,239 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-28 13:41:47,471 WARN L193 SmtUtils]: Spent 110.00 ms on a formula simplification that was a NOOP. DAG size: 64 [2020-10-28 13:41:47,472 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 13:41:47,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:41:47,479 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:41:47,500 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:41:47,503 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 13:41:47,503 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:41:47,504 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 23 [2020-10-28 13:41:47,504 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:41:47,504 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:41:47,504 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:41:47,504 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:41:47,505 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:41:47,505 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:41:47,543 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 13:41:47,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:41:47,604 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:41:47,763 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:41:47,764 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 75 [2020-10-28 13:41:47,764 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:41:47,764 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 184 [2020-10-28 13:41:47,765 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:41:47,765 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:41:47,765 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 13:41:47,765 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:41:47,766 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 69 [2020-10-28 13:41:47,766 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 13:41:47,846 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 33 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 13:41:47,848 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [417893813] [2020-10-28 13:41:47,849 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 13:41:47,849 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-28 13:41:47,850 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [726955232] [2020-10-28 13:41:47,853 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-28 13:41:47,853 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 13:41:47,859 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-28 13:41:47,860 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-28 13:41:47,860 INFO L87 Difference]: Start difference. First operand 998 states and 1492 transitions. Second operand 5 states. [2020-10-28 13:41:48,500 WARN L193 SmtUtils]: Spent 135.00 ms on a formula simplification that was a NOOP. DAG size: 68 [2020-10-28 13:42:05,406 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 13:42:05,407 INFO L93 Difference]: Finished difference Result 2900 states and 4368 transitions. [2020-10-28 13:42:05,410 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-28 13:42:05,410 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 116 [2020-10-28 13:42:05,411 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 13:42:05,426 INFO L225 Difference]: With dead ends: 2900 [2020-10-28 13:42:05,427 INFO L226 Difference]: Without dead ends: 1908 [2020-10-28 13:42:05,431 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-28 13:42:05,435 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1908 states. [2020-10-28 13:42:05,542 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1908 to 1895. [2020-10-28 13:42:05,542 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1895 states. [2020-10-28 13:42:05,557 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1895 states to 1895 states and 2575 transitions. [2020-10-28 13:42:05,557 INFO L78 Accepts]: Start accepts. Automaton has 1895 states and 2575 transitions. Word has length 116 [2020-10-28 13:42:05,561 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 13:42:05,562 INFO L481 AbstractCegarLoop]: Abstraction has 1895 states and 2575 transitions. [2020-10-28 13:42:05,562 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-28 13:42:05,562 INFO L276 IsEmpty]: Start isEmpty. Operand 1895 states and 2575 transitions. [2020-10-28 13:42:05,579 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 139 [2020-10-28 13:42:05,579 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 13:42:05,580 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] [2020-10-28 13:42:05,582 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-28 13:42:05,583 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 13:42:05,583 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 13:42:05,584 INFO L82 PathProgramCache]: Analyzing trace with hash -1394454716, now seen corresponding path program 1 times [2020-10-28 13:42:05,587 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 13:42:05,588 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1937390725] [2020-10-28 13:42:05,588 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 13:42:05,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:42:05,714 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:42:05,806 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:42:06,151 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:42:06,698 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:42:07,864 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:42:08,378 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:42:08,378 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 150 [2020-10-28 13:42:08,379 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-28 13:42:08,379 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2705 [2020-10-28 13:42:08,379 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:42:08,379 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:42:08,379 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 13:42:08,380 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 104 [2020-10-28 13:42:08,380 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-28 13:42:08,380 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:42:08,566 WARN L193 SmtUtils]: Spent 125.00 ms on a formula simplification that was a NOOP. DAG size: 64 [2020-10-28 13:42:08,567 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 13:42:08,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:42:08,576 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:42:08,583 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:42:08,583 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 13:42:08,584 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:42:08,584 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-28 13:42:08,584 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:42:08,584 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:42:08,585 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:42:08,585 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:42:08,585 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:42:08,585 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 13:42:08,616 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 13:42:08,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:42:08,663 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:42:08,767 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:42:08,768 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 97 [2020-10-28 13:42:08,768 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:42:08,768 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 122 [2020-10-28 13:42:08,768 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:42:08,769 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:42:08,769 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 13:42:08,769 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 89 [2020-10-28 13:42:08,769 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-28 13:42:08,769 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:42:08,913 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 34 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 13:42:08,914 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1937390725] [2020-10-28 13:42:08,914 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 13:42:08,915 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-28 13:42:08,916 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [223999476] [2020-10-28 13:42:08,918 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-28 13:42:08,919 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 13:42:08,920 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-28 13:42:08,921 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-28 13:42:08,921 INFO L87 Difference]: Start difference. First operand 1895 states and 2575 transitions. Second operand 5 states. [2020-10-28 13:42:09,082 WARN L193 SmtUtils]: Spent 117.00 ms on a formula simplification that was a NOOP. DAG size: 66 [2020-10-28 13:42:26,591 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 13:42:26,591 INFO L93 Difference]: Finished difference Result 3336 states and 4937 transitions. [2020-10-28 13:42:26,593 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-28 13:42:26,593 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 138 [2020-10-28 13:42:26,594 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 13:42:26,607 INFO L225 Difference]: With dead ends: 3336 [2020-10-28 13:42:26,608 INFO L226 Difference]: Without dead ends: 2342 [2020-10-28 13:42:26,611 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-28 13:42:26,615 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2342 states. [2020-10-28 13:42:26,669 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2342 to 1898. [2020-10-28 13:42:26,670 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1898 states. [2020-10-28 13:42:26,677 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1898 states to 1898 states and 2577 transitions. [2020-10-28 13:42:26,678 INFO L78 Accepts]: Start accepts. Automaton has 1898 states and 2577 transitions. Word has length 138 [2020-10-28 13:42:26,679 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 13:42:26,679 INFO L481 AbstractCegarLoop]: Abstraction has 1898 states and 2577 transitions. [2020-10-28 13:42:26,679 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-28 13:42:26,679 INFO L276 IsEmpty]: Start isEmpty. Operand 1898 states and 2577 transitions. [2020-10-28 13:42:26,681 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 152 [2020-10-28 13:42:26,681 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 13:42:26,682 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 13:42:26,682 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-28 13:42:26,682 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 13:42:26,683 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 13:42:26,683 INFO L82 PathProgramCache]: Analyzing trace with hash 1730048727, now seen corresponding path program 1 times [2020-10-28 13:42:26,683 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 13:42:26,683 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [795455745] [2020-10-28 13:42:26,684 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 13:42:26,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:42:26,760 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:42:26,887 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:42:28,826 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:42:28,826 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 163 [2020-10-28 13:42:28,826 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 13:42:28,827 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2095 [2020-10-28 13:42:28,827 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:42:28,827 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:42:28,827 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 13:42:28,827 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-28 13:42:28,828 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 115 [2020-10-28 13:42:28,828 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:42:29,041 WARN L193 SmtUtils]: Spent 140.00 ms on a formula simplification that was a NOOP. DAG size: 64 [2020-10-28 13:42:29,042 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 13:42:29,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:42:29,052 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:42:29,066 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:42:29,066 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 13:42:29,066 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:42:29,066 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-28 13:42:29,067 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:42:29,067 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:42:29,069 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 13:42:29,069 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:42:29,069 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-28 13:42:29,069 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-28 13:42:29,108 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 13:42:29,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:42:29,166 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:42:29,431 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:42:29,437 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 110 [2020-10-28 13:42:29,437 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:42:29,437 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 289 [2020-10-28 13:42:29,438 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:42:29,438 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:42:29,438 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 13:42:29,438 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 13:42:29,438 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 110 [2020-10-28 13:42:29,439 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 13:42:29,685 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 34 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 13:42:29,685 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [795455745] [2020-10-28 13:42:29,685 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 13:42:29,685 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-28 13:42:29,686 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1482921526] [2020-10-28 13:42:29,687 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 13:42:29,688 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 13:42:29,688 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 13:42:29,689 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-28 13:42:29,689 INFO L87 Difference]: Start difference. First operand 1898 states and 2577 transitions. Second operand 7 states. [2020-10-28 13:42:29,869 WARN L193 SmtUtils]: Spent 135.00 ms on a formula simplification that was a NOOP. DAG size: 70 [2020-10-28 13:42:34,787 WARN L193 SmtUtils]: Spent 136.00 ms on a formula simplification that was a NOOP. DAG size: 67 [2020-10-28 13:42:48,757 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 13:42:48,757 INFO L93 Difference]: Finished difference Result 3399 states and 4780 transitions. [2020-10-28 13:42:48,760 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-28 13:42:48,760 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 151 [2020-10-28 13:42:48,761 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 13:42:48,770 INFO L225 Difference]: With dead ends: 3399 [2020-10-28 13:42:48,771 INFO L226 Difference]: Without dead ends: 1507 [2020-10-28 13:42:48,776 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2020-10-28 13:42:48,778 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1507 states. [2020-10-28 13:42:48,827 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1507 to 1442. [2020-10-28 13:42:48,827 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1442 states. [2020-10-28 13:42:48,833 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1442 states to 1442 states and 1981 transitions. [2020-10-28 13:42:48,833 INFO L78 Accepts]: Start accepts. Automaton has 1442 states and 1981 transitions. Word has length 151 [2020-10-28 13:42:48,834 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 13:42:48,834 INFO L481 AbstractCegarLoop]: Abstraction has 1442 states and 1981 transitions. [2020-10-28 13:42:48,834 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 13:42:48,834 INFO L276 IsEmpty]: Start isEmpty. Operand 1442 states and 1981 transitions. [2020-10-28 13:42:48,836 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 190 [2020-10-28 13:42:48,837 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 13:42:48,837 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 13:42:48,837 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-28 13:42:48,837 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 13:42:48,838 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 13:42:48,838 INFO L82 PathProgramCache]: Analyzing trace with hash 1485814553, now seen corresponding path program 1 times [2020-10-28 13:42:48,838 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 13:42:48,839 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [798508747] [2020-10-28 13:42:48,839 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 13:42:48,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:42:48,926 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:42:49,108 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:42:49,187 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:42:51,378 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:42:53,918 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:42:53,918 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 203 [2020-10-28 13:42:53,918 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-28 13:42:53,918 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5026 [2020-10-28 13:42:53,919 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:42:53,919 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:42:53,919 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 13:42:53,919 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 84 [2020-10-28 13:42:53,919 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 76 [2020-10-28 13:42:53,920 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:42:54,170 WARN L193 SmtUtils]: Spent 163.00 ms on a formula simplification that was a NOOP. DAG size: 64 [2020-10-28 13:42:54,171 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 13:42:54,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:42:54,179 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:42:54,185 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:42:54,186 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 13:42:54,186 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:42:54,186 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-28 13:42:54,186 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:42:54,186 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:42:54,187 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:42:54,187 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:42:54,187 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:42:54,187 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 13:42:54,231 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 13:42:54,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:42:54,267 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:42:54,348 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:42:54,348 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 75 [2020-10-28 13:42:54,348 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:42:54,348 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 94 [2020-10-28 13:42:54,349 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:42:54,349 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:42:54,349 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 13:42:54,349 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:42:54,349 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 69 [2020-10-28 13:42:54,350 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:42:54,381 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2020-10-28 13:42:54,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:42:54,420 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:42:54,552 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:42:54,553 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-10-28 13:42:54,553 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:42:54,553 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 147 [2020-10-28 13:42:54,554 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:42:54,555 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:42:54,555 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 13:42:54,555 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 13:42:54,555 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 74 [2020-10-28 13:42:54,556 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 13:42:54,722 INFO L134 CoverageAnalysis]: Checked inductivity of 141 backedges. 138 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-28 13:42:54,722 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [798508747] [2020-10-28 13:42:54,723 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 13:42:54,723 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-28 13:42:54,723 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1418014787] [2020-10-28 13:42:54,725 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 13:42:54,727 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 13:42:54,728 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 13:42:54,728 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-28 13:42:54,728 INFO L87 Difference]: Start difference. First operand 1442 states and 1981 transitions. Second operand 7 states. [2020-10-28 13:42:54,928 WARN L193 SmtUtils]: Spent 137.00 ms on a formula simplification that was a NOOP. DAG size: 66 [2020-10-28 13:43:00,089 WARN L193 SmtUtils]: Spent 139.00 ms on a formula simplification that was a NOOP. DAG size: 66 [2020-10-28 13:43:14,324 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 13:43:14,325 INFO L93 Difference]: Finished difference Result 3393 states and 4988 transitions. [2020-10-28 13:43:14,327 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-28 13:43:14,327 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 189 [2020-10-28 13:43:14,328 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 13:43:14,339 INFO L225 Difference]: With dead ends: 3393 [2020-10-28 13:43:14,340 INFO L226 Difference]: Without dead ends: 1935 [2020-10-28 13:43:14,345 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2020-10-28 13:43:14,348 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1935 states. [2020-10-28 13:43:14,405 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1935 to 1895. [2020-10-28 13:43:14,406 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1895 states. [2020-10-28 13:43:14,413 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1895 states to 1895 states and 2311 transitions. [2020-10-28 13:43:14,414 INFO L78 Accepts]: Start accepts. Automaton has 1895 states and 2311 transitions. Word has length 189 [2020-10-28 13:43:14,414 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 13:43:14,414 INFO L481 AbstractCegarLoop]: Abstraction has 1895 states and 2311 transitions. [2020-10-28 13:43:14,414 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 13:43:14,415 INFO L276 IsEmpty]: Start isEmpty. Operand 1895 states and 2311 transitions. [2020-10-28 13:43:14,418 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 203 [2020-10-28 13:43:14,418 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 13:43:14,418 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, 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] [2020-10-28 13:43:14,418 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-28 13:43:14,419 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 13:43:14,419 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 13:43:14,419 INFO L82 PathProgramCache]: Analyzing trace with hash 1665350118, now seen corresponding path program 1 times [2020-10-28 13:43:14,419 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 13:43:14,420 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1272214269] [2020-10-28 13:43:14,420 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 13:43:14,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:43:14,522 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:43:14,782 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:43:15,688 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:43:15,688 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 216 [2020-10-28 13:43:15,688 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 13:43:15,688 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1206 [2020-10-28 13:43:15,688 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:43:15,689 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:43:15,689 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 13:43:15,689 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 97 [2020-10-28 13:43:15,689 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 76 [2020-10-28 13:43:15,689 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:43:15,899 WARN L193 SmtUtils]: Spent 137.00 ms on a formula simplification that was a NOOP. DAG size: 64 [2020-10-28 13:43:15,901 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 13:43:15,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:43:15,906 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:43:15,911 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:43:15,912 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 13:43:15,912 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:43:15,912 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-28 13:43:15,912 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:43:15,912 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:43:15,913 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:43:15,913 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:43:15,913 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:43:15,913 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 13:43:15,954 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 13:43:15,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:43:15,993 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:43:16,085 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:43:16,086 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 88 [2020-10-28 13:43:16,086 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:43:16,086 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 108 [2020-10-28 13:43:16,086 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:43:16,086 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:43:16,087 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 13:43:16,087 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:43:16,087 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 82 [2020-10-28 13:43:16,087 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:43:16,124 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-10-28 13:43:16,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:43:16,167 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:43:16,303 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:43:16,304 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-10-28 13:43:16,304 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:43:16,304 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 152 [2020-10-28 13:43:16,304 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:43:16,305 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:43:16,305 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 13:43:16,305 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 13:43:16,305 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 74 [2020-10-28 13:43:16,305 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:43:16,478 INFO L134 CoverageAnalysis]: Checked inductivity of 141 backedges. 138 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-28 13:43:16,479 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1272214269] [2020-10-28 13:43:16,481 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 13:43:16,481 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-28 13:43:16,481 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1574238628] [2020-10-28 13:43:16,482 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 13:43:16,482 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 13:43:16,487 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 13:43:16,487 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-28 13:43:16,487 INFO L87 Difference]: Start difference. First operand 1895 states and 2311 transitions. Second operand 7 states. [2020-10-28 13:43:17,604 WARN L193 SmtUtils]: Spent 156.00 ms on a formula simplification that was a NOOP. DAG size: 66 [2020-10-28 13:43:23,233 WARN L193 SmtUtils]: Spent 147.00 ms on a formula simplification that was a NOOP. DAG size: 66 [2020-10-28 13:43:38,242 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 13:43:38,243 INFO L93 Difference]: Finished difference Result 4268 states and 5505 transitions. [2020-10-28 13:43:38,245 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-28 13:43:38,246 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 202 [2020-10-28 13:43:38,246 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 13:43:38,260 INFO L225 Difference]: With dead ends: 4268 [2020-10-28 13:43:38,260 INFO L226 Difference]: Without dead ends: 2812 [2020-10-28 13:43:38,265 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2020-10-28 13:43:38,269 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2812 states. [2020-10-28 13:43:38,338 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2812 to 2801. [2020-10-28 13:43:38,339 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2801 states. [2020-10-28 13:43:38,349 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2801 states to 2801 states and 3421 transitions. [2020-10-28 13:43:38,350 INFO L78 Accepts]: Start accepts. Automaton has 2801 states and 3421 transitions. Word has length 202 [2020-10-28 13:43:38,351 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 13:43:38,351 INFO L481 AbstractCegarLoop]: Abstraction has 2801 states and 3421 transitions. [2020-10-28 13:43:38,351 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 13:43:38,351 INFO L276 IsEmpty]: Start isEmpty. Operand 2801 states and 3421 transitions. [2020-10-28 13:43:38,354 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 205 [2020-10-28 13:43:38,354 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 13:43:38,355 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] [2020-10-28 13:43:38,355 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-28 13:43:38,355 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 13:43:38,356 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 13:43:38,356 INFO L82 PathProgramCache]: Analyzing trace with hash -517862526, now seen corresponding path program 1 times [2020-10-28 13:43:38,356 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 13:43:38,356 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1854114162] [2020-10-28 13:43:38,356 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 13:43:38,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:43:38,449 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:43:38,548 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:43:39,122 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:43:40,236 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:43:43,443 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:43:43,444 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 218 [2020-10-28 13:43:43,444 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-28 13:43:43,444 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5033 [2020-10-28 13:43:43,444 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:43:43,444 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:43:43,445 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 13:43:43,445 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 174 [2020-10-28 13:43:43,445 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 40 [2020-10-28 13:43:43,445 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:43:43,710 WARN L193 SmtUtils]: Spent 153.00 ms on a formula simplification that was a NOOP. DAG size: 64 [2020-10-28 13:43:43,711 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 13:43:43,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:43:43,716 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:43:43,722 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:43:43,722 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 13:43:43,722 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:43:43,723 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-28 13:43:43,723 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:43:43,723 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:43:43,723 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:43:43,723 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:43:43,724 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:43:43,724 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 13:43:43,763 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 13:43:43,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:43:43,771 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:43:43,803 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:43:43,803 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 88 [2020-10-28 13:43:43,803 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:43:43,804 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 33 [2020-10-28 13:43:43,804 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:43:43,804 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:43:43,804 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:43:43,804 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:43:43,804 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:43:43,804 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:43:43,839 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-10-28 13:43:43,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:43:43,874 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:43:43,957 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:43:43,957 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-10-28 13:43:43,957 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:43:43,957 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 97 [2020-10-28 13:43:43,958 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:43:43,958 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:43:43,958 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 13:43:43,958 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:43:43,958 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 70 [2020-10-28 13:43:43,958 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:43:44,042 INFO L134 CoverageAnalysis]: Checked inductivity of 143 backedges. 69 proven. 2 refuted. 0 times theorem prover too weak. 72 trivial. 0 not checked. [2020-10-28 13:43:44,043 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1854114162] [2020-10-28 13:43:44,044 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 13:43:44,044 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-28 13:43:44,044 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1203250159] [2020-10-28 13:43:44,045 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-28 13:43:44,045 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 13:43:44,046 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-28 13:43:44,046 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-28 13:43:44,047 INFO L87 Difference]: Start difference. First operand 2801 states and 3421 transitions. Second operand 5 states. [2020-10-28 13:43:44,255 WARN L193 SmtUtils]: Spent 161.00 ms on a formula simplification that was a NOOP. DAG size: 66 [2020-10-28 13:43:58,959 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 13:43:58,959 INFO L93 Difference]: Finished difference Result 7366 states and 9336 transitions. [2020-10-28 13:43:58,961 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-28 13:43:58,961 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 204 [2020-10-28 13:43:58,962 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 13:43:58,986 INFO L225 Difference]: With dead ends: 7366 [2020-10-28 13:43:58,986 INFO L226 Difference]: Without dead ends: 5003 [2020-10-28 13:43:58,994 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 8 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-28 13:43:59,003 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5003 states. [2020-10-28 13:43:59,115 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5003 to 4566. [2020-10-28 13:43:59,116 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4566 states. [2020-10-28 13:43:59,131 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4566 states to 4566 states and 5468 transitions. [2020-10-28 13:43:59,133 INFO L78 Accepts]: Start accepts. Automaton has 4566 states and 5468 transitions. Word has length 204 [2020-10-28 13:43:59,133 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 13:43:59,134 INFO L481 AbstractCegarLoop]: Abstraction has 4566 states and 5468 transitions. [2020-10-28 13:43:59,134 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-28 13:43:59,134 INFO L276 IsEmpty]: Start isEmpty. Operand 4566 states and 5468 transitions. [2020-10-28 13:43:59,137 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 216 [2020-10-28 13:43:59,137 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 13:43:59,138 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] [2020-10-28 13:43:59,138 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-28 13:43:59,139 INFO L429 AbstractCegarLoop]: === Iteration 8 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 13:43:59,139 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 13:43:59,140 INFO L82 PathProgramCache]: Analyzing trace with hash 2080481336, now seen corresponding path program 1 times [2020-10-28 13:43:59,140 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 13:43:59,140 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [615903314] [2020-10-28 13:43:59,141 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 13:43:59,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:43:59,250 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:43:59,397 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:43:59,566 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:44:04,228 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:44:04,228 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 229 [2020-10-28 13:44:04,228 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-28 13:44:04,228 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5024 [2020-10-28 13:44:04,229 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:44:04,229 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:44:04,229 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 13:44:04,229 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 97 [2020-10-28 13:44:04,229 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 128 [2020-10-28 13:44:04,229 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:44:04,464 WARN L193 SmtUtils]: Spent 151.00 ms on a formula simplification that was a NOOP. DAG size: 64 [2020-10-28 13:44:04,465 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 13:44:04,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:44:04,469 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:44:04,474 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:44:04,474 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 13:44:04,474 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:44:04,474 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-28 13:44:04,474 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:44:04,475 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:44:04,475 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:44:04,475 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:44:04,475 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:44:04,475 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:44:04,512 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 13:44:04,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:44:04,548 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:44:04,628 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:44:04,628 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 88 [2020-10-28 13:44:04,629 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:44:04,629 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 95 [2020-10-28 13:44:04,629 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:44:04,629 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:44:04,629 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 13:44:04,629 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:44:04,629 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 82 [2020-10-28 13:44:04,630 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:44:04,659 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-10-28 13:44:04,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:44:04,701 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:44:04,760 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:44:04,924 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:44:04,924 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 87 [2020-10-28 13:44:04,924 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 13:44:04,925 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 238 [2020-10-28 13:44:04,925 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:44:04,925 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:44:04,925 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 13:44:04,925 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:44:04,925 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 81 [2020-10-28 13:44:04,926 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:44:05,038 INFO L134 CoverageAnalysis]: Checked inductivity of 154 backedges. 66 proven. 2 refuted. 0 times theorem prover too weak. 86 trivial. 0 not checked. [2020-10-28 13:44:05,043 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [615903314] [2020-10-28 13:44:05,044 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 13:44:05,044 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-28 13:44:05,044 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1796261540] [2020-10-28 13:44:05,045 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-28 13:44:05,045 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 13:44:05,045 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-28 13:44:05,046 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-28 13:44:05,046 INFO L87 Difference]: Start difference. First operand 4566 states and 5468 transitions. Second operand 5 states. [2020-10-28 13:44:06,041 WARN L193 SmtUtils]: Spent 138.00 ms on a formula simplification that was a NOOP. DAG size: 66 [2020-10-28 13:44:19,185 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 13:44:19,186 INFO L93 Difference]: Finished difference Result 9134 states and 10948 transitions. [2020-10-28 13:44:19,188 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-28 13:44:19,188 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 215 [2020-10-28 13:44:19,189 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 13:44:19,208 INFO L225 Difference]: With dead ends: 9134 [2020-10-28 13:44:19,208 INFO L226 Difference]: Without dead ends: 4574 [2020-10-28 13:44:19,217 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-28 13:44:19,223 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4574 states. [2020-10-28 13:44:19,319 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4574 to 4566. [2020-10-28 13:44:19,319 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4566 states. [2020-10-28 13:44:19,335 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4566 states to 4566 states and 5451 transitions. [2020-10-28 13:44:19,335 INFO L78 Accepts]: Start accepts. Automaton has 4566 states and 5451 transitions. Word has length 215 [2020-10-28 13:44:19,336 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 13:44:19,336 INFO L481 AbstractCegarLoop]: Abstraction has 4566 states and 5451 transitions. [2020-10-28 13:44:19,336 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-28 13:44:19,336 INFO L276 IsEmpty]: Start isEmpty. Operand 4566 states and 5451 transitions. [2020-10-28 13:44:19,341 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 271 [2020-10-28 13:44:19,341 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 13:44:19,342 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, 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] [2020-10-28 13:44:19,342 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-28 13:44:19,342 INFO L429 AbstractCegarLoop]: === Iteration 9 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 13:44:19,343 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 13:44:19,343 INFO L82 PathProgramCache]: Analyzing trace with hash 22024329, now seen corresponding path program 1 times [2020-10-28 13:44:19,343 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 13:44:19,344 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [298182235] [2020-10-28 13:44:19,344 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 13:44:19,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:44:19,477 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:44:19,575 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:44:21,517 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:44:22,873 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:44:22,873 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 284 [2020-10-28 13:44:22,874 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-28 13:44:22,874 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3449 [2020-10-28 13:44:22,874 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:44:22,874 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:44:22,874 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 13:44:22,874 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 240 [2020-10-28 13:44:22,874 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 40 [2020-10-28 13:44:22,875 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:44:23,104 WARN L193 SmtUtils]: Spent 132.00 ms on a formula simplification that was a NOOP. DAG size: 64 [2020-10-28 13:44:23,106 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 13:44:23,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:44:23,110 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:44:23,114 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:44:23,115 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 13:44:23,115 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:44:23,115 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-28 13:44:23,115 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:44:23,116 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:44:23,116 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:44:23,116 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:44:23,116 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:44:23,117 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 13:44:23,158 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 13:44:23,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:44:23,167 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:44:23,204 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:44:23,204 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 88 [2020-10-28 13:44:23,204 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:44:23,205 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 38 [2020-10-28 13:44:23,205 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:44:23,205 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:44:23,205 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:44:23,205 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:44:23,206 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:44:23,206 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 13:44:23,244 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-10-28 13:44:23,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:44:23,312 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:44:23,436 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:44:23,436 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 142 [2020-10-28 13:44:23,437 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:44:23,437 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 152 [2020-10-28 13:44:23,437 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:44:23,437 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:44:23,437 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 13:44:23,437 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:44:23,438 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 136 [2020-10-28 13:44:23,438 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:44:23,556 INFO L134 CoverageAnalysis]: Checked inductivity of 155 backedges. 69 proven. 2 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2020-10-28 13:44:23,558 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [298182235] [2020-10-28 13:44:23,558 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 13:44:23,558 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-28 13:44:23,558 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [965282309] [2020-10-28 13:44:23,559 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-28 13:44:23,559 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 13:44:23,560 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-28 13:44:23,560 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-28 13:44:23,560 INFO L87 Difference]: Start difference. First operand 4566 states and 5451 transitions. Second operand 5 states. [2020-10-28 13:44:27,912 WARN L193 SmtUtils]: Spent 144.00 ms on a formula simplification that was a NOOP. DAG size: 66 [2020-10-28 13:44:45,010 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 13:44:45,011 INFO L93 Difference]: Finished difference Result 10455 states and 12496 transitions. [2020-10-28 13:44:45,013 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-28 13:44:45,014 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 270 [2020-10-28 13:44:45,015 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 13:44:45,037 INFO L225 Difference]: With dead ends: 10455 [2020-10-28 13:44:45,037 INFO L226 Difference]: Without dead ends: 5895 [2020-10-28 13:44:45,048 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-28 13:44:45,055 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5895 states. [2020-10-28 13:44:45,162 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5895 to 5450. [2020-10-28 13:44:45,162 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5450 states. [2020-10-28 13:44:45,172 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5450 states to 5450 states and 6480 transitions. [2020-10-28 13:44:45,172 INFO L78 Accepts]: Start accepts. Automaton has 5450 states and 6480 transitions. Word has length 270 [2020-10-28 13:44:45,173 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 13:44:45,173 INFO L481 AbstractCegarLoop]: Abstraction has 5450 states and 6480 transitions. [2020-10-28 13:44:45,173 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-28 13:44:45,173 INFO L276 IsEmpty]: Start isEmpty. Operand 5450 states and 6480 transitions. [2020-10-28 13:44:45,178 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 287 [2020-10-28 13:44:45,179 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 13:44:45,179 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, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 13:44:45,179 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-28 13:44:45,179 INFO L429 AbstractCegarLoop]: === Iteration 10 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 13:44:45,180 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 13:44:45,180 INFO L82 PathProgramCache]: Analyzing trace with hash 9098140, now seen corresponding path program 1 times [2020-10-28 13:44:45,180 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 13:44:45,180 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [917037809] [2020-10-28 13:44:45,181 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 13:44:45,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:44:45,294 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:44:45,391 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:44:45,857 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:44:46,535 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:44:48,764 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:44:48,764 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 302 [2020-10-28 13:44:48,764 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-28 13:44:48,764 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3514 [2020-10-28 13:44:48,765 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:44:48,765 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:44:48,765 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 13:44:48,765 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 185 [2020-10-28 13:44:48,766 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 113 [2020-10-28 13:44:48,766 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 13:44:49,008 WARN L193 SmtUtils]: Spent 144.00 ms on a formula simplification that was a NOOP. DAG size: 64 [2020-10-28 13:44:49,009 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 13:44:49,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:44:49,012 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:44:49,016 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:44:49,016 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 13:44:49,016 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:44:49,016 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-28 13:44:49,017 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:44:49,017 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:44:49,017 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:44:49,017 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:44:49,017 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:44:49,017 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:44:49,054 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 13:44:49,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:44:49,061 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:44:49,092 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:44:49,093 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 88 [2020-10-28 13:44:49,093 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:44:49,093 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 31 [2020-10-28 13:44:49,093 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:44:49,093 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:44:49,093 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:44:49,093 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:44:49,094 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:44:49,094 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:44:49,119 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-10-28 13:44:49,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:44:49,151 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:44:49,222 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:44:49,222 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 87 [2020-10-28 13:44:49,222 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:44:49,222 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 84 [2020-10-28 13:44:49,222 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:44:49,223 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:44:49,223 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 13:44:49,223 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:44:49,223 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 81 [2020-10-28 13:44:49,223 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:44:49,248 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 181 [2020-10-28 13:44:49,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:44:49,275 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:44:49,317 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:44:49,452 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:44:49,453 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 72 [2020-10-28 13:44:49,453 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 13:44:49,453 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 188 [2020-10-28 13:44:49,453 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:44:49,453 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:44:49,453 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 13:44:49,453 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:44:49,453 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 66 [2020-10-28 13:44:49,453 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:44:49,526 INFO L134 CoverageAnalysis]: Checked inductivity of 330 backedges. 108 proven. 3 refuted. 0 times theorem prover too weak. 219 trivial. 0 not checked. [2020-10-28 13:44:49,526 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [917037809] [2020-10-28 13:44:49,526 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 13:44:49,526 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-28 13:44:49,527 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1017210642] [2020-10-28 13:44:49,527 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-28 13:44:49,527 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 13:44:49,528 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-28 13:44:49,528 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-28 13:44:49,528 INFO L87 Difference]: Start difference. First operand 5450 states and 6480 transitions. Second operand 5 states. [2020-10-28 13:44:53,114 WARN L193 SmtUtils]: Spent 146.00 ms on a formula simplification that was a NOOP. DAG size: 68