/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SequenceOfStatements --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=SMALLESTAMONGWIDE --traceabstraction.additional.smt.options tolerance=0.3 --traceabstraction.additional.smt.options log-additional-information=true --traceabstraction.additional.smt.options unknown-allowed=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf language data_model -i ../../../trunk/examples/svcomp/eca-rers2012/Problem12_label55.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-29 07:07:43,679 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-29 07:07:43,683 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-29 07:07:43,722 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-29 07:07:43,722 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-29 07:07:43,724 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-29 07:07:43,726 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-29 07:07:43,729 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-29 07:07:43,731 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-29 07:07:43,732 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-29 07:07:43,734 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-29 07:07:43,735 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-29 07:07:43,736 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-29 07:07:43,737 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-29 07:07:43,739 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-29 07:07:43,740 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-29 07:07:43,742 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-29 07:07:43,743 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-29 07:07:43,755 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-29 07:07:43,758 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-29 07:07:43,761 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-29 07:07:43,762 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-29 07:07:43,764 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-29 07:07:43,765 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-29 07:07:43,768 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-29 07:07:43,769 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-29 07:07:43,769 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-29 07:07:43,771 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-29 07:07:43,771 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-29 07:07:43,773 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-29 07:07:43,773 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-29 07:07:43,774 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-29 07:07:43,775 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-29 07:07:43,776 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-29 07:07:43,778 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-29 07:07:43,778 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-29 07:07:43,779 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-29 07:07:43,780 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-29 07:07:43,780 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-29 07:07:43,781 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-29 07:07:43,782 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-29 07:07:43,783 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-29 07:07:43,812 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-29 07:07:43,812 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-29 07:07:43,814 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-29 07:07:43,814 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-29 07:07:43,815 INFO L138 SettingsManager]: * Use SBE=true [2020-10-29 07:07:43,815 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-29 07:07:43,815 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-29 07:07:43,815 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-29 07:07:43,815 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-29 07:07:43,816 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-29 07:07:43,816 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-29 07:07:43,816 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-29 07:07:43,816 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-29 07:07:43,816 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-29 07:07:43,817 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-29 07:07:43,817 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-29 07:07:43,817 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-29 07:07:43,817 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-29 07:07:43,818 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-29 07:07:43,818 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-29 07:07:43,818 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-29 07:07:43,818 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-29 07:07:43,819 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-29 07:07:43,819 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-29 07:07:43,819 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-29 07:07:43,819 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-29 07:07:43,819 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-29 07:07:43,820 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-29 07:07:43,820 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-29 07:07:43,820 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.3;log-additional-information=true;unknown-allowed=true; [2020-10-29 07:07:44,316 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-29 07:07:44,349 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-29 07:07:44,352 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-29 07:07:44,354 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-29 07:07:44,355 INFO L275 PluginConnector]: CDTParser initialized [2020-10-29 07:07:44,356 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem12_label55.c [2020-10-29 07:07:44,437 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/38084c8e4/07d66bb86b2c49f98abc38fc346910c6/FLAG8375b84e5 [2020-10-29 07:07:45,483 INFO L306 CDTParser]: Found 1 translation units. [2020-10-29 07:07:45,483 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem12_label55.c [2020-10-29 07:07:45,526 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/38084c8e4/07d66bb86b2c49f98abc38fc346910c6/FLAG8375b84e5 [2020-10-29 07:07:45,952 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/38084c8e4/07d66bb86b2c49f98abc38fc346910c6 [2020-10-29 07:07:45,955 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-29 07:07:45,963 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-29 07:07:45,966 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-29 07:07:45,966 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-29 07:07:45,971 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-29 07:07:45,972 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.10 07:07:45" (1/1) ... [2020-10-29 07:07:45,977 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@58b41489 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 07:07:45, skipping insertion in model container [2020-10-29 07:07:45,978 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.10 07:07:45" (1/1) ... [2020-10-29 07:07:45,988 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-29 07:07:46,141 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-29 07:07:47,687 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-29 07:07:47,706 INFO L203 MainTranslator]: Completed pre-run [2020-10-29 07:07:48,497 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-29 07:07:48,547 INFO L208 MainTranslator]: Completed translation [2020-10-29 07:07:48,548 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 07:07:48 WrapperNode [2020-10-29 07:07:48,548 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-29 07:07:48,550 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-29 07:07:48,550 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-29 07:07:48,551 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-29 07:07:48,567 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 07:07:48" (1/1) ... [2020-10-29 07:07:48,570 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 07:07:48" (1/1) ... [2020-10-29 07:07:48,671 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 07:07:48" (1/1) ... [2020-10-29 07:07:48,672 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 07:07:48" (1/1) ... [2020-10-29 07:07:48,815 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 07:07:48" (1/1) ... [2020-10-29 07:07:48,856 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 07:07:48" (1/1) ... [2020-10-29 07:07:48,888 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 07:07:48" (1/1) ... [2020-10-29 07:07:48,919 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-29 07:07:48,920 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-29 07:07:48,920 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-29 07:07:48,920 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-29 07:07:48,921 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 07:07:48" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-29 07:07:49,064 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-29 07:07:49,064 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-29 07:07:49,065 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-29 07:07:49,065 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-10-29 07:07:49,066 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2020-10-29 07:07:49,066 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2020-10-29 07:07:49,066 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output4 [2020-10-29 07:07:49,066 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-29 07:07:49,066 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-10-29 07:07:49,066 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2020-10-29 07:07:49,068 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2020-10-29 07:07:49,068 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output4 [2020-10-29 07:07:49,068 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-29 07:07:49,068 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-29 07:07:49,068 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-29 07:07:49,070 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-29 07:07:49,070 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-29 07:07:49,070 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-29 07:07:49,070 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-29 07:07:49,071 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-29 07:07:49,071 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-29 07:07:49,072 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-29 07:07:49,072 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-29 07:07:49,072 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-29 07:07:49,072 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-29 07:07:54,714 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-29 07:07:54,714 INFO L298 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-29 07:07:54,722 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 07:07:54 BoogieIcfgContainer [2020-10-29 07:07:54,722 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-29 07:07:54,727 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-29 07:07:54,727 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-29 07:07:54,732 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-29 07:07:54,733 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.10 07:07:45" (1/3) ... [2020-10-29 07:07:54,735 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@9170321 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.10 07:07:54, skipping insertion in model container [2020-10-29 07:07:54,735 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 07:07:48" (2/3) ... [2020-10-29 07:07:54,735 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@9170321 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.10 07:07:54, skipping insertion in model container [2020-10-29 07:07:54,736 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 07:07:54" (3/3) ... [2020-10-29 07:07:54,739 INFO L111 eAbstractionObserver]: Analyzing ICFG Problem12_label55.c [2020-10-29 07:07:54,758 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-29 07:07:54,765 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-29 07:07:54,781 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-29 07:07:54,833 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-29 07:07:54,833 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-29 07:07:54,833 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-29 07:07:54,834 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-29 07:07:54,834 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-29 07:07:54,834 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-29 07:07:54,834 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-29 07:07:54,834 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-29 07:07:54,880 INFO L276 IsEmpty]: Start isEmpty. Operand 843 states. [2020-10-29 07:07:54,887 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-10-29 07:07:54,888 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 07:07:54,889 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 07:07:54,890 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 07:07:54,896 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 07:07:54,897 INFO L82 PathProgramCache]: Analyzing trace with hash -744967124, now seen corresponding path program 1 times [2020-10-29 07:07:54,908 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 07:07:54,909 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1548579813] [2020-10-29 07:07:54,909 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 07:07:55,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:07:55,117 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:07:55,570 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:07:55,571 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-10-29 07:07:55,571 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:07:55,571 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 495 [2020-10-29 07:07:55,573 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:07:55,574 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:07:55,574 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-29 07:07:55,574 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-29 07:07:55,574 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-29 07:07:55,574 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-29 07:07:55,810 WARN L193 SmtUtils]: Spent 126.00 ms on a formula simplification that was a NOOP. DAG size: 64 [2020-10-29 07:07:55,812 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 07:07:55,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:07:55,842 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:07:55,896 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:07:55,897 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 07:07:55,897 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:07:55,897 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 62 [2020-10-29 07:07:55,898 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:07:55,898 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:07:55,898 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 07:07:55,898 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:07:55,899 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 07:07:55,899 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 07:07:55,921 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 07:07:55,922 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1548579813] [2020-10-29 07:07:55,925 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 07:07:55,925 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-29 07:07:55,926 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1095738155] [2020-10-29 07:07:55,932 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-29 07:07:55,933 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 07:07:55,958 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-29 07:07:55,959 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-29 07:07:55,962 INFO L87 Difference]: Start difference. First operand 843 states. Second operand 4 states. [2020-10-29 07:08:07,133 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 07:08:07,133 INFO L93 Difference]: Finished difference Result 2492 states and 4754 transitions. [2020-10-29 07:08:07,134 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-29 07:08:07,136 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 15 [2020-10-29 07:08:07,137 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 07:08:07,176 INFO L225 Difference]: With dead ends: 2492 [2020-10-29 07:08:07,176 INFO L226 Difference]: Without dead ends: 1569 [2020-10-29 07:08:07,189 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 [2020-10-29 07:08:07,218 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1569 states. [2020-10-29 07:08:07,379 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1569 to 1565. [2020-10-29 07:08:07,381 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1565 states. [2020-10-29 07:08:07,394 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1565 states to 1565 states and 2485 transitions. [2020-10-29 07:08:07,396 INFO L78 Accepts]: Start accepts. Automaton has 1565 states and 2485 transitions. Word has length 15 [2020-10-29 07:08:07,397 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 07:08:07,398 INFO L481 AbstractCegarLoop]: Abstraction has 1565 states and 2485 transitions. [2020-10-29 07:08:07,398 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-29 07:08:07,398 INFO L276 IsEmpty]: Start isEmpty. Operand 1565 states and 2485 transitions. [2020-10-29 07:08:07,406 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2020-10-29 07:08:07,406 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 07:08:07,407 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-10-29 07:08:07,408 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-29 07:08:07,409 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 07:08:07,410 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 07:08:07,410 INFO L82 PathProgramCache]: Analyzing trace with hash 1591770005, now seen corresponding path program 1 times [2020-10-29 07:08:07,411 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 07:08:07,411 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1203912920] [2020-10-29 07:08:07,411 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 07:08:07,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:08:07,551 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:08:07,967 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:08:08,879 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:08:08,880 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 106 [2020-10-29 07:08:08,881 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 07:08:08,881 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1371 [2020-10-29 07:08:08,883 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:08:08,883 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:08:08,884 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-29 07:08:08,885 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-29 07:08:08,885 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 85 [2020-10-29 07:08:08,887 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 5 [2020-10-29 07:08:08,988 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 07:08:08,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:08:08,999 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:08:09,014 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:08:09,015 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 07:08:09,015 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:08:09,015 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-10-29 07:08:09,015 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:08:09,015 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:08:09,016 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 07:08:09,016 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:08:09,016 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 07:08:09,016 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 07:08:09,036 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 07:08:09,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:08:09,071 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:08:09,202 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:08:09,202 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 80 [2020-10-29 07:08:09,202 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:08:09,203 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 144 [2020-10-29 07:08:09,203 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:08:09,203 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:08:09,203 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 07:08:09,203 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 07:08:09,204 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 80 [2020-10-29 07:08:09,204 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 07:08:09,338 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 07:08:09,338 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1203912920] [2020-10-29 07:08:09,339 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 07:08:09,339 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-29 07:08:09,339 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1270050917] [2020-10-29 07:08:09,341 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-29 07:08:09,341 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 07:08:09,342 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-29 07:08:09,342 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-29 07:08:09,342 INFO L87 Difference]: Start difference. First operand 1565 states and 2485 transitions. Second operand 7 states. [2020-10-29 07:08:22,386 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 07:08:22,387 INFO L93 Difference]: Finished difference Result 4763 states and 7585 transitions. [2020-10-29 07:08:22,390 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-29 07:08:22,391 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 94 [2020-10-29 07:08:22,392 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 07:08:22,414 INFO L225 Difference]: With dead ends: 4763 [2020-10-29 07:08:22,414 INFO L226 Difference]: Without dead ends: 3204 [2020-10-29 07:08:22,420 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2020-10-29 07:08:22,425 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3204 states. [2020-10-29 07:08:22,592 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3204 to 3144. [2020-10-29 07:08:22,593 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3144 states. [2020-10-29 07:08:22,607 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3144 states to 3144 states and 4560 transitions. [2020-10-29 07:08:22,608 INFO L78 Accepts]: Start accepts. Automaton has 3144 states and 4560 transitions. Word has length 94 [2020-10-29 07:08:22,609 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 07:08:22,609 INFO L481 AbstractCegarLoop]: Abstraction has 3144 states and 4560 transitions. [2020-10-29 07:08:22,609 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-29 07:08:22,609 INFO L276 IsEmpty]: Start isEmpty. Operand 3144 states and 4560 transitions. [2020-10-29 07:08:22,620 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2020-10-29 07:08:22,621 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 07:08:22,621 INFO L422 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 07:08:22,621 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-29 07:08:22,621 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 07:08:22,622 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 07:08:22,622 INFO L82 PathProgramCache]: Analyzing trace with hash -1011750395, now seen corresponding path program 1 times [2020-10-29 07:08:22,623 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 07:08:22,623 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2080939966] [2020-10-29 07:08:22,623 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 07:08:22,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:08:22,772 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:08:23,073 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:08:23,390 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:08:24,469 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:08:24,469 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 135 [2020-10-29 07:08:24,469 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-29 07:08:24,469 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1750 [2020-10-29 07:08:24,470 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:08:24,470 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:08:24,470 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-29 07:08:24,470 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-29 07:08:24,470 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 114 [2020-10-29 07:08:24,471 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:08:24,589 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 07:08:24,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:08:24,601 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:08:24,612 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:08:24,613 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 07:08:24,613 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:08:24,613 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-29 07:08:24,613 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:08:24,613 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:08:24,614 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 07:08:24,614 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:08:24,614 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 07:08:24,614 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:08:24,636 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 07:08:24,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:08:24,695 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:08:25,025 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:08:25,025 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 109 [2020-10-29 07:08:25,025 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:08:25,025 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 353 [2020-10-29 07:08:25,026 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:08:25,026 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:08:25,026 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 07:08:25,026 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 07:08:25,026 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 109 [2020-10-29 07:08:25,027 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:08:25,184 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 07:08:25,185 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2080939966] [2020-10-29 07:08:25,186 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 07:08:25,186 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-29 07:08:25,186 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1014132951] [2020-10-29 07:08:25,187 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-29 07:08:25,187 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 07:08:25,188 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-29 07:08:25,189 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-29 07:08:25,189 INFO L87 Difference]: Start difference. First operand 3144 states and 4560 transitions. Second operand 7 states. [2020-10-29 07:08:39,402 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 07:08:39,402 INFO L93 Difference]: Finished difference Result 9657 states and 14131 transitions. [2020-10-29 07:08:39,411 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-29 07:08:39,412 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 123 [2020-10-29 07:08:39,413 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 07:08:39,453 INFO L225 Difference]: With dead ends: 9657 [2020-10-29 07:08:39,453 INFO L226 Difference]: Without dead ends: 6519 [2020-10-29 07:08:39,462 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-29 07:08:39,471 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6519 states. [2020-10-29 07:08:39,634 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6519 to 6344. [2020-10-29 07:08:39,635 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6344 states. [2020-10-29 07:08:39,660 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6344 states to 6344 states and 8122 transitions. [2020-10-29 07:08:39,663 INFO L78 Accepts]: Start accepts. Automaton has 6344 states and 8122 transitions. Word has length 123 [2020-10-29 07:08:39,665 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 07:08:39,665 INFO L481 AbstractCegarLoop]: Abstraction has 6344 states and 8122 transitions. [2020-10-29 07:08:39,665 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-29 07:08:39,666 INFO L276 IsEmpty]: Start isEmpty. Operand 6344 states and 8122 transitions. [2020-10-29 07:08:39,675 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 161 [2020-10-29 07:08:39,675 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 07:08:39,675 INFO L422 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 07:08:39,676 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-29 07:08:39,676 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 07:08:39,676 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 07:08:39,677 INFO L82 PathProgramCache]: Analyzing trace with hash 1961057561, now seen corresponding path program 1 times [2020-10-29 07:08:39,677 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 07:08:39,684 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1044024765] [2020-10-29 07:08:39,684 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 07:08:39,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:08:39,787 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:08:40,272 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:08:40,464 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:08:40,465 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 172 [2020-10-29 07:08:40,465 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 07:08:40,465 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 719 [2020-10-29 07:08:40,465 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:08:40,465 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:08:40,466 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-29 07:08:40,466 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-29 07:08:40,466 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 163 [2020-10-29 07:08:40,466 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:08:40,587 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 07:08:40,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:08:40,598 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:08:40,612 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:08:40,612 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 07:08:40,613 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:08:40,613 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-29 07:08:40,613 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:08:40,614 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:08:40,614 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 07:08:40,614 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:08:40,614 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 07:08:40,615 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 07:08:40,643 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 07:08:40,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:08:40,714 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:08:40,849 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:08:41,107 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:08:41,107 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 146 [2020-10-29 07:08:41,107 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 07:08:41,108 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 422 [2020-10-29 07:08:41,108 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:08:41,108 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:08:41,113 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 07:08:41,114 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:08:41,114 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 140 [2020-10-29 07:08:41,114 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 6 [2020-10-29 07:08:41,213 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-10-29 07:08:41,213 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1044024765] [2020-10-29 07:08:41,214 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 07:08:41,214 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-29 07:08:41,214 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1461297518] [2020-10-29 07:08:41,217 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-29 07:08:41,217 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 07:08:41,218 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-29 07:08:41,218 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-29 07:08:41,219 INFO L87 Difference]: Start difference. First operand 6344 states and 8122 transitions. Second operand 5 states. [2020-10-29 07:08:54,045 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 07:08:54,045 INFO L93 Difference]: Finished difference Result 18955 states and 24711 transitions. [2020-10-29 07:08:54,053 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-29 07:08:54,054 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 160 [2020-10-29 07:08:54,054 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 07:08:54,124 INFO L225 Difference]: With dead ends: 18955 [2020-10-29 07:08:54,124 INFO L226 Difference]: Without dead ends: 12617 [2020-10-29 07:08:54,140 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-29 07:08:54,158 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12617 states. [2020-10-29 07:08:54,460 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12617 to 11848. [2020-10-29 07:08:54,461 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11848 states. [2020-10-29 07:08:54,493 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11848 states to 11848 states and 14738 transitions. [2020-10-29 07:08:54,494 INFO L78 Accepts]: Start accepts. Automaton has 11848 states and 14738 transitions. Word has length 160 [2020-10-29 07:08:54,495 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 07:08:54,495 INFO L481 AbstractCegarLoop]: Abstraction has 11848 states and 14738 transitions. [2020-10-29 07:08:54,495 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-29 07:08:54,495 INFO L276 IsEmpty]: Start isEmpty. Operand 11848 states and 14738 transitions. [2020-10-29 07:08:54,497 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 164 [2020-10-29 07:08:54,498 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 07:08:54,498 INFO L422 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 07:08:54,498 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-29 07:08:54,499 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 07:08:54,499 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 07:08:54,499 INFO L82 PathProgramCache]: Analyzing trace with hash -1272803243, now seen corresponding path program 1 times [2020-10-29 07:08:54,500 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 07:08:54,500 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [49487269] [2020-10-29 07:08:54,500 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 07:08:54,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:08:54,593 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:08:54,665 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:08:56,159 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:08:56,159 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 175 [2020-10-29 07:08:56,159 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 07:08:56,159 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1603 [2020-10-29 07:08:56,160 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:08:56,160 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:08:56,160 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-29 07:08:56,160 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-29 07:08:56,160 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 154 [2020-10-29 07:08:56,160 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:08:56,291 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 07:08:56,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:08:56,301 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:08:56,315 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:08:56,316 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 07:08:56,316 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:08:56,316 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-29 07:08:56,316 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:08:56,316 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:08:56,317 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 07:08:56,317 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:08:56,317 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 07:08:56,317 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 07:08:56,344 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 07:08:56,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:08:56,409 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:08:56,643 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:08:56,644 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 149 [2020-10-29 07:08:56,644 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:08:56,644 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 262 [2020-10-29 07:08:56,644 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:08:56,645 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:08:56,645 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 07:08:56,645 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 07:08:56,645 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 149 [2020-10-29 07:08:56,645 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 07:08:56,911 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 07:08:56,911 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [49487269] [2020-10-29 07:08:56,912 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 07:08:56,912 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-29 07:08:56,912 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [321653559] [2020-10-29 07:08:56,913 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-29 07:08:56,913 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 07:08:56,913 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-29 07:08:56,914 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-29 07:08:56,914 INFO L87 Difference]: Start difference. First operand 11848 states and 14738 transitions. Second operand 7 states. [2020-10-29 07:08:57,067 WARN L193 SmtUtils]: Spent 118.00 ms on a formula simplification that was a NOOP. DAG size: 68 [2020-10-29 07:09:12,211 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 07:09:12,212 INFO L93 Difference]: Finished difference Result 28613 states and 35283 transitions. [2020-10-29 07:09:12,214 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-29 07:09:12,214 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 163 [2020-10-29 07:09:12,215 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 07:09:12,279 INFO L225 Difference]: With dead ends: 28613 [2020-10-29 07:09:12,280 INFO L226 Difference]: Without dead ends: 16771 [2020-10-29 07:09:12,308 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-29 07:09:12,332 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16771 states. [2020-10-29 07:09:12,726 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16771 to 16705. [2020-10-29 07:09:12,727 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16705 states. [2020-10-29 07:09:12,773 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16705 states to 16705 states and 20164 transitions. [2020-10-29 07:09:12,773 INFO L78 Accepts]: Start accepts. Automaton has 16705 states and 20164 transitions. Word has length 163 [2020-10-29 07:09:12,774 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 07:09:12,774 INFO L481 AbstractCegarLoop]: Abstraction has 16705 states and 20164 transitions. [2020-10-29 07:09:12,774 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-29 07:09:12,774 INFO L276 IsEmpty]: Start isEmpty. Operand 16705 states and 20164 transitions. [2020-10-29 07:09:12,778 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 204 [2020-10-29 07:09:12,778 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 07:09:12,780 INFO L422 BasicCegarLoop]: trace histogram [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, 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] [2020-10-29 07:09:12,780 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-29 07:09:12,781 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 07:09:12,781 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 07:09:12,781 INFO L82 PathProgramCache]: Analyzing trace with hash 227062168, now seen corresponding path program 1 times [2020-10-29 07:09:12,782 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 07:09:12,782 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [538963918] [2020-10-29 07:09:12,782 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 07:09:12,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:09:12,915 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:09:13,205 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:09:13,537 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:09:14,299 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:09:14,300 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 217 [2020-10-29 07:09:14,301 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-29 07:09:14,301 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1438 [2020-10-29 07:09:14,301 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:09:14,301 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:09:14,301 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 07:09:14,301 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 85 [2020-10-29 07:09:14,301 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 116 [2020-10-29 07:09:14,302 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:09:14,423 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 07:09:14,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:09:14,427 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:09:14,432 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:09:14,433 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 07:09:14,433 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:09:14,433 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-29 07:09:14,433 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:09:14,433 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:09:14,433 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 07:09:14,434 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:09:14,434 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 07:09:14,434 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:09:14,462 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 07:09:14,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:09:14,498 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:09:14,561 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:09:14,562 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-10-29 07:09:14,562 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:09:14,562 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 75 [2020-10-29 07:09:14,562 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:09:14,563 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:09:14,563 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 07:09:14,563 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:09:14,564 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 70 [2020-10-29 07:09:14,564 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 07:09:14,592 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-10-29 07:09:14,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:09:14,660 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:09:14,900 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:09:14,900 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 114 [2020-10-29 07:09:14,900 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:09:14,900 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 262 [2020-10-29 07:09:14,900 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:09:14,901 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:09:14,901 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 07:09:14,901 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 07:09:14,901 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 114 [2020-10-29 07:09:14,901 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:09:15,132 INFO L134 CoverageAnalysis]: Checked inductivity of 89 backedges. 86 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-29 07:09:15,133 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [538963918] [2020-10-29 07:09:15,133 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 07:09:15,133 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-29 07:09:15,133 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [645708612] [2020-10-29 07:09:15,134 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-29 07:09:15,134 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 07:09:15,135 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-29 07:09:15,135 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-29 07:09:15,135 INFO L87 Difference]: Start difference. First operand 16705 states and 20164 transitions. Second operand 7 states. [2020-10-29 07:09:33,029 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 07:09:33,030 INFO L93 Difference]: Finished difference Result 39174 states and 49200 transitions. [2020-10-29 07:09:33,032 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-29 07:09:33,033 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 203 [2020-10-29 07:09:33,034 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 07:09:33,124 INFO L225 Difference]: With dead ends: 39174 [2020-10-29 07:09:33,125 INFO L226 Difference]: Without dead ends: 20089 [2020-10-29 07:09:33,166 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-29 07:09:33,198 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20089 states. [2020-10-29 07:09:33,656 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20089 to 19977. [2020-10-29 07:09:33,656 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19977 states. [2020-10-29 07:09:33,709 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19977 states to 19977 states and 23578 transitions. [2020-10-29 07:09:33,712 INFO L78 Accepts]: Start accepts. Automaton has 19977 states and 23578 transitions. Word has length 203 [2020-10-29 07:09:33,713 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 07:09:33,713 INFO L481 AbstractCegarLoop]: Abstraction has 19977 states and 23578 transitions. [2020-10-29 07:09:33,713 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-29 07:09:33,713 INFO L276 IsEmpty]: Start isEmpty. Operand 19977 states and 23578 transitions. [2020-10-29 07:09:33,717 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 250 [2020-10-29 07:09:33,717 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 07:09:33,717 INFO L422 BasicCegarLoop]: trace histogram [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, 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] [2020-10-29 07:09:33,718 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-29 07:09:33,718 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 07:09:33,720 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 07:09:33,720 INFO L82 PathProgramCache]: Analyzing trace with hash -222718884, now seen corresponding path program 1 times [2020-10-29 07:09:33,721 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 07:09:33,721 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1179444224] [2020-10-29 07:09:33,721 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 07:09:33,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:09:33,845 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:09:34,171 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:09:35,142 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:09:35,635 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:09:35,635 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 263 [2020-10-29 07:09:35,635 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-29 07:09:35,636 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1833 [2020-10-29 07:09:35,636 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:09:35,636 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:09:35,636 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 07:09:35,636 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 155 [2020-10-29 07:09:35,637 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 92 [2020-10-29 07:09:35,638 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:09:35,786 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 07:09:35,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:09:35,792 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:09:35,799 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:09:35,799 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 07:09:35,800 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:09:35,800 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-29 07:09:35,800 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:09:35,800 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:09:35,800 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 07:09:35,800 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:09:35,801 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 07:09:35,801 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:09:35,835 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 07:09:35,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:09:35,901 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:09:36,034 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:09:36,035 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 146 [2020-10-29 07:09:36,035 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:09:36,035 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 159 [2020-10-29 07:09:36,035 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:09:36,035 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:09:36,036 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 07:09:36,036 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:09:36,036 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 140 [2020-10-29 07:09:36,036 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:09:36,104 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2020-10-29 07:09:36,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:09:36,138 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:09:36,265 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:09:36,266 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 90 [2020-10-29 07:09:36,266 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:09:36,266 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 141 [2020-10-29 07:09:36,266 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:09:36,267 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:09:36,267 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 07:09:36,267 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 07:09:36,267 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 90 [2020-10-29 07:09:36,267 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:09:36,408 INFO L134 CoverageAnalysis]: Checked inductivity of 103 backedges. 100 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-29 07:09:36,409 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1179444224] [2020-10-29 07:09:36,409 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 07:09:36,409 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-29 07:09:36,409 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1243322056] [2020-10-29 07:09:36,410 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-29 07:09:36,410 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 07:09:36,411 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-29 07:09:36,412 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-29 07:09:36,412 INFO L87 Difference]: Start difference. First operand 19977 states and 23578 transitions. Second operand 7 states. [2020-10-29 07:09:59,749 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 07:09:59,750 INFO L93 Difference]: Finished difference Result 53065 states and 65886 transitions. [2020-10-29 07:09:59,751 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-29 07:09:59,751 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 249 [2020-10-29 07:09:59,752 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 07:09:59,888 INFO L225 Difference]: With dead ends: 53065 [2020-10-29 07:09:59,888 INFO L226 Difference]: Without dead ends: 33861 [2020-10-29 07:09:59,929 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 7 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2020-10-29 07:09:59,968 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33861 states. [2020-10-29 07:10:00,799 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33861 to 32912. [2020-10-29 07:10:00,800 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32912 states. [2020-10-29 07:10:00,889 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32912 states to 32912 states and 39973 transitions. [2020-10-29 07:10:00,890 INFO L78 Accepts]: Start accepts. Automaton has 32912 states and 39973 transitions. Word has length 249 [2020-10-29 07:10:00,891 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 07:10:00,891 INFO L481 AbstractCegarLoop]: Abstraction has 32912 states and 39973 transitions. [2020-10-29 07:10:00,891 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-29 07:10:00,891 INFO L276 IsEmpty]: Start isEmpty. Operand 32912 states and 39973 transitions. [2020-10-29 07:10:00,895 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 254 [2020-10-29 07:10:00,895 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 07:10:00,896 INFO L422 BasicCegarLoop]: trace histogram [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, 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] [2020-10-29 07:10:00,896 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-29 07:10:00,897 INFO L429 AbstractCegarLoop]: === Iteration 8 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 07:10:00,897 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 07:10:00,897 INFO L82 PathProgramCache]: Analyzing trace with hash -1401275564, now seen corresponding path program 1 times [2020-10-29 07:10:00,897 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 07:10:00,898 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [816618696] [2020-10-29 07:10:00,899 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 07:10:00,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:10:01,014 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:10:01,107 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:10:02,440 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:10:03,501 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:10:03,502 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 267 [2020-10-29 07:10:03,502 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-29 07:10:03,503 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2528 [2020-10-29 07:10:03,503 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:10:03,503 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:10:03,503 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 07:10:03,503 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 159 [2020-10-29 07:10:03,504 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 92 [2020-10-29 07:10:03,504 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:10:03,695 WARN L193 SmtUtils]: Spent 108.00 ms on a formula simplification that was a NOOP. DAG size: 64 [2020-10-29 07:10:03,697 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 07:10:03,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:10:03,704 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:10:03,711 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:10:03,711 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 07:10:03,712 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:10:03,713 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-29 07:10:03,713 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:10:03,713 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:10:03,713 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 07:10:03,714 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:10:03,714 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 07:10:03,714 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:10:03,754 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 07:10:03,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:10:03,828 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:10:03,984 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:10:03,985 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 150 [2020-10-29 07:10:03,985 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:10:03,985 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 188 [2020-10-29 07:10:03,985 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:10:03,986 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:10:03,986 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 07:10:03,986 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:10:03,986 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 144 [2020-10-29 07:10:03,986 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:10:04,074 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 157 [2020-10-29 07:10:04,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:10:04,117 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:10:04,266 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:10:04,267 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 90 [2020-10-29 07:10:04,267 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:10:04,267 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 169 [2020-10-29 07:10:04,267 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:10:04,268 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:10:04,268 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 07:10:04,268 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 07:10:04,268 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 90 [2020-10-29 07:10:04,268 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 07:10:04,475 INFO L134 CoverageAnalysis]: Checked inductivity of 103 backedges. 100 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-29 07:10:04,476 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [816618696] [2020-10-29 07:10:04,476 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 07:10:04,476 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-29 07:10:04,477 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [880030642] [2020-10-29 07:10:04,479 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-29 07:10:04,479 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 07:10:04,480 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-29 07:10:04,481 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-29 07:10:04,481 INFO L87 Difference]: Start difference. First operand 32912 states and 39973 transitions. Second operand 7 states. [2020-10-29 07:10:26,475 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 07:10:26,475 INFO L93 Difference]: Finished difference Result 81622 states and 102882 transitions. [2020-10-29 07:10:26,477 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-29 07:10:26,477 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 253 [2020-10-29 07:10:26,477 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 07:10:26,631 INFO L225 Difference]: With dead ends: 81622 [2020-10-29 07:10:26,631 INFO L226 Difference]: Without dead ends: 49483 [2020-10-29 07:10:26,686 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-29 07:10:26,742 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49483 states. [2020-10-29 07:10:28,116 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49483 to 47711. [2020-10-29 07:10:28,116 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 47711 states. [2020-10-29 07:10:28,230 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47711 states to 47711 states and 57730 transitions. [2020-10-29 07:10:28,231 INFO L78 Accepts]: Start accepts. Automaton has 47711 states and 57730 transitions. Word has length 253 [2020-10-29 07:10:28,231 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 07:10:28,231 INFO L481 AbstractCegarLoop]: Abstraction has 47711 states and 57730 transitions. [2020-10-29 07:10:28,231 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-29 07:10:28,232 INFO L276 IsEmpty]: Start isEmpty. Operand 47711 states and 57730 transitions. [2020-10-29 07:10:28,236 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 286 [2020-10-29 07:10:28,236 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 07:10:28,237 INFO L422 BasicCegarLoop]: trace histogram [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, 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, 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] [2020-10-29 07:10:28,237 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-29 07:10:28,237 INFO L429 AbstractCegarLoop]: === Iteration 9 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 07:10:28,238 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 07:10:28,238 INFO L82 PathProgramCache]: Analyzing trace with hash -579379308, now seen corresponding path program 1 times [2020-10-29 07:10:28,239 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 07:10:28,239 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [931742881] [2020-10-29 07:10:28,239 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 07:10:28,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:10:28,374 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:10:29,092 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:10:29,092 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 299 [2020-10-29 07:10:29,092 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:10:29,092 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 764 [2020-10-29 07:10:29,092 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:10:29,093 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:10:29,093 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 07:10:29,093 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 282 [2020-10-29 07:10:29,093 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-10-29 07:10:29,093 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:10:29,253 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 07:10:29,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:10:29,258 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:10:29,262 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:10:29,262 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 07:10:29,262 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:10:29,262 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-29 07:10:29,263 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:10:29,263 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:10:29,263 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 07:10:29,263 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:10:29,263 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 07:10:29,263 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:10:29,298 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 07:10:29,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:10:29,311 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:10:29,362 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:10:29,362 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 150 [2020-10-29 07:10:29,362 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:10:29,362 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 52 [2020-10-29 07:10:29,362 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:10:29,362 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:10:29,363 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 07:10:29,363 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:10:29,363 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 07:10:29,363 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:10:29,418 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 157 [2020-10-29 07:10:29,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:10:29,461 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:10:29,562 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:10:29,562 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 122 [2020-10-29 07:10:29,562 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:10:29,562 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 119 [2020-10-29 07:10:29,563 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:10:29,563 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:10:29,563 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 07:10:29,563 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:10:29,564 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 116 [2020-10-29 07:10:29,564 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 07:10:29,696 INFO L134 CoverageAnalysis]: Checked inductivity of 135 backedges. 15 proven. 2 refuted. 0 times theorem prover too weak. 118 trivial. 0 not checked. [2020-10-29 07:10:29,702 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [931742881] [2020-10-29 07:10:29,703 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 07:10:29,703 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-29 07:10:29,703 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [226552741] [2020-10-29 07:10:29,704 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-29 07:10:29,704 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 07:10:29,705 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-29 07:10:29,706 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-29 07:10:29,706 INFO L87 Difference]: Start difference. First operand 47711 states and 57730 transitions. Second operand 5 states. [2020-10-29 07:10:48,271 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 07:10:48,271 INFO L93 Difference]: Finished difference Result 113408 states and 141714 transitions. [2020-10-29 07:10:48,273 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-29 07:10:48,274 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 285 [2020-10-29 07:10:48,275 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 07:10:48,562 INFO L225 Difference]: With dead ends: 113408 [2020-10-29 07:10:48,563 INFO L226 Difference]: Without dead ends: 66470 [2020-10-29 07:10:48,814 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-29 07:10:48,871 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66470 states. [2020-10-29 07:10:50,329 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66470 to 65662. [2020-10-29 07:10:50,330 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 65662 states. [2020-10-29 07:10:50,659 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65662 states to 65662 states and 79283 transitions. [2020-10-29 07:10:50,660 INFO L78 Accepts]: Start accepts. Automaton has 65662 states and 79283 transitions. Word has length 285 [2020-10-29 07:10:50,660 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 07:10:50,660 INFO L481 AbstractCegarLoop]: Abstraction has 65662 states and 79283 transitions. [2020-10-29 07:10:50,661 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-29 07:10:50,661 INFO L276 IsEmpty]: Start isEmpty. Operand 65662 states and 79283 transitions. [2020-10-29 07:10:50,670 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 388 [2020-10-29 07:10:50,670 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 07:10:50,671 INFO L422 BasicCegarLoop]: trace histogram [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, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 07:10:50,671 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-29 07:10:50,671 INFO L429 AbstractCegarLoop]: === Iteration 10 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 07:10:50,672 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 07:10:50,672 INFO L82 PathProgramCache]: Analyzing trace with hash -351691215, now seen corresponding path program 1 times [2020-10-29 07:10:50,672 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 07:10:50,672 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1608339139] [2020-10-29 07:10:50,672 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 07:10:50,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:10:50,948 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:10:51,391 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:10:53,040 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:10:53,040 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 403 [2020-10-29 07:10:53,040 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 07:10:53,040 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2145 [2020-10-29 07:10:53,041 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:10:53,041 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:10:53,041 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 07:10:53,041 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 260 [2020-10-29 07:10:53,041 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 127 [2020-10-29 07:10:53,041 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:10:53,226 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 07:10:53,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:10:53,232 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:10:53,241 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:10:53,241 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 07:10:53,242 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:10:53,242 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-29 07:10:53,242 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:10:53,242 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:10:53,242 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 07:10:53,243 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:10:53,243 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 07:10:53,243 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:10:53,281 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 07:10:53,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:10:53,294 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:10:53,347 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:10:53,348 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 146 [2020-10-29 07:10:53,348 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:10:53,348 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 55 [2020-10-29 07:10:53,348 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:10:53,349 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:10:53,349 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 07:10:53,349 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:10:53,349 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 07:10:53,349 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:10:53,440 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2020-10-29 07:10:53,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:10:53,498 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:10:53,618 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:10:53,618 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 104 [2020-10-29 07:10:53,619 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:10:53,619 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 142 [2020-10-29 07:10:53,619 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:10:53,620 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:10:53,620 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 07:10:53,620 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:10:53,621 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 98 [2020-10-29 07:10:53,621 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 07:10:53,680 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 256 [2020-10-29 07:10:53,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:10:53,777 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:10:53,983 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:10:53,983 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 125 [2020-10-29 07:10:53,983 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:10:53,983 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 232 [2020-10-29 07:10:53,984 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:10:53,984 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:10:53,984 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 07:10:53,984 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 07:10:53,984 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 125 [2020-10-29 07:10:53,984 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:10:54,262 INFO L134 CoverageAnalysis]: Checked inductivity of 351 backedges. 247 proven. 2 refuted. 0 times theorem prover too weak. 102 trivial. 0 not checked. [2020-10-29 07:10:54,262 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1608339139] [2020-10-29 07:10:54,263 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 07:10:54,263 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-29 07:10:54,263 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [916312324] [2020-10-29 07:10:54,264 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-29 07:10:54,264 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 07:10:54,264 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-29 07:10:54,264 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-29 07:10:54,265 INFO L87 Difference]: Start difference. First operand 65662 states and 79283 transitions. Second operand 7 states. [2020-10-29 07:11:15,178 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 07:11:15,178 INFO L93 Difference]: Finished difference Result 131239 states and 160308 transitions. [2020-10-29 07:11:15,181 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-29 07:11:15,181 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 387 [2020-10-29 07:11:15,182 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 07:11:15,401 INFO L225 Difference]: With dead ends: 131239 [2020-10-29 07:11:15,401 INFO L226 Difference]: Without dead ends: 66350 [2020-10-29 07:11:15,472 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-29 07:11:15,543 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66350 states. [2020-10-29 07:11:17,334 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66350 to 65328. [2020-10-29 07:11:17,334 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 65328 states. [2020-10-29 07:11:17,845 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65328 states to 65328 states and 77317 transitions. [2020-10-29 07:11:17,846 INFO L78 Accepts]: Start accepts. Automaton has 65328 states and 77317 transitions. Word has length 387 [2020-10-29 07:11:17,847 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 07:11:17,847 INFO L481 AbstractCegarLoop]: Abstraction has 65328 states and 77317 transitions. [2020-10-29 07:11:17,847 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-29 07:11:17,849 INFO L276 IsEmpty]: Start isEmpty. Operand 65328 states and 77317 transitions. [2020-10-29 07:11:17,867 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 396 [2020-10-29 07:11:17,867 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 07:11:17,867 INFO L422 BasicCegarLoop]: trace histogram [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, 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, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 07:11:17,868 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-29 07:11:17,868 INFO L429 AbstractCegarLoop]: === Iteration 11 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 07:11:17,868 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 07:11:17,868 INFO L82 PathProgramCache]: Analyzing trace with hash 723864257, now seen corresponding path program 1 times [2020-10-29 07:11:17,869 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 07:11:17,869 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1588231679] [2020-10-29 07:11:17,869 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 07:11:17,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:11:18,044 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:11:18,361 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:11:19,383 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:11:20,026 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:11:22,978 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:11:22,978 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 411 [2020-10-29 07:11:22,978 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-29 07:11:22,979 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5004 [2020-10-29 07:11:22,979 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:11:22,979 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:11:22,980 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 07:11:22,980 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 240 [2020-10-29 07:11:22,980 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 155 [2020-10-29 07:11:22,980 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 07:11:23,182 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 07:11:23,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:11:23,189 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:11:23,196 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:11:23,197 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 07:11:23,197 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:11:23,197 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-29 07:11:23,197 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:11:23,197 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:11:23,198 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 07:11:23,198 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:11:23,198 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 07:11:23,198 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:11:23,248 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 07:11:23,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:11:23,260 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:11:23,301 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:11:23,302 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 146 [2020-10-29 07:11:23,302 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:11:23,302 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 42 [2020-10-29 07:11:23,302 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:11:23,302 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:11:23,302 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 07:11:23,303 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:11:23,303 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 07:11:23,303 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:11:23,349 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2020-10-29 07:11:23,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:11:23,378 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:11:23,433 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:11:23,434 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 84 [2020-10-29 07:11:23,434 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:11:23,434 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 66 [2020-10-29 07:11:23,434 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:11:23,434 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:11:23,435 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 07:11:23,435 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:11:23,435 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 78 [2020-10-29 07:11:23,435 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:11:23,458 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 236 [2020-10-29 07:11:23,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:11:23,520 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:11:23,754 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:11:23,754 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 153 [2020-10-29 07:11:23,754 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:11:23,754 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 259 [2020-10-29 07:11:23,755 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:11:23,755 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:11:23,755 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 07:11:23,755 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 07:11:23,755 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 153 [2020-10-29 07:11:23,755 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:11:24,140 INFO L134 CoverageAnalysis]: Checked inductivity of 332 backedges. 248 proven. 2 refuted. 0 times theorem prover too weak. 82 trivial. 0 not checked. [2020-10-29 07:11:24,141 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1588231679] [2020-10-29 07:11:24,141 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 07:11:24,141 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-29 07:11:24,141 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1348328903] [2020-10-29 07:11:24,142 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-29 07:11:24,143 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 07:11:24,143 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-29 07:11:24,143 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-29 07:11:24,144 INFO L87 Difference]: Start difference. First operand 65328 states and 77317 transitions. Second operand 7 states. [2020-10-29 07:11:24,299 WARN L193 SmtUtils]: Spent 108.00 ms on a formula simplification that was a NOOP. DAG size: 66