/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SequenceOfStatements --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=WIDESTAMONGSMALL --traceabstraction.additional.smt.options tolerance=0.6 --traceabstraction.additional.smt.options log-additional-information=true --traceabstraction.additional.smt.options unknown-allowed=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf language data_model -i ../../../trunk/examples/svcomp/eca-rers2012/Problem13_label08.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-28 12:30:20,698 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-28 12:30:20,702 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-28 12:30:20,739 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-28 12:30:20,740 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-28 12:30:20,742 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-28 12:30:20,744 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-28 12:30:20,747 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-28 12:30:20,749 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-28 12:30:20,750 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-28 12:30:20,752 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-28 12:30:20,753 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-28 12:30:20,754 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-28 12:30:20,756 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-28 12:30:20,757 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-28 12:30:20,759 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-28 12:30:20,760 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-28 12:30:20,761 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-28 12:30:20,763 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-28 12:30:20,766 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-28 12:30:20,768 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-28 12:30:20,770 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-28 12:30:20,772 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-28 12:30:20,773 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-28 12:30:20,776 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-28 12:30:20,777 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-28 12:30:20,777 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-28 12:30:20,779 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-28 12:30:20,779 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-28 12:30:20,780 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-28 12:30:20,781 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-28 12:30:20,782 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-28 12:30:20,782 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-28 12:30:20,783 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-28 12:30:20,785 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-28 12:30:20,785 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-28 12:30:20,786 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-28 12:30:20,786 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-28 12:30:20,787 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-28 12:30:20,788 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-28 12:30:20,789 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-28 12:30:20,793 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-28 12:30:20,865 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-28 12:30:20,867 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-28 12:30:20,869 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-28 12:30:20,869 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-28 12:30:20,870 INFO L138 SettingsManager]: * Use SBE=true [2020-10-28 12:30:20,871 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-28 12:30:20,871 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-28 12:30:20,872 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-28 12:30:20,872 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-28 12:30:20,872 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-28 12:30:20,873 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-28 12:30:20,874 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-28 12:30:20,874 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-28 12:30:20,874 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-28 12:30:20,874 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-28 12:30:20,874 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-28 12:30:20,875 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-28 12:30:20,875 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-28 12:30:20,875 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-28 12:30:20,876 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-28 12:30:20,876 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-28 12:30:20,876 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-28 12:30:20,877 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-28 12:30:20,877 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-28 12:30:20,877 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-28 12:30:20,877 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-28 12:30:20,877 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-28 12:30:20,878 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-28 12:30:20,878 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-28 12:30:20,878 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.6;log-additional-information=true;unknown-allowed=true; [2020-10-28 12:30:21,349 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-28 12:30:21,390 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-28 12:30:21,395 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-28 12:30:21,397 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-28 12:30:21,398 INFO L275 PluginConnector]: CDTParser initialized [2020-10-28 12:30:21,399 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem13_label08.c [2020-10-28 12:30:21,497 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/2f6393a66/25ef3c9a86d746cf98d86c4d78520486/FLAG1ae71dc91 [2020-10-28 12:30:22,748 INFO L306 CDTParser]: Found 1 translation units. [2020-10-28 12:30:22,749 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem13_label08.c [2020-10-28 12:30:22,791 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/2f6393a66/25ef3c9a86d746cf98d86c4d78520486/FLAG1ae71dc91 [2020-10-28 12:30:23,119 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/2f6393a66/25ef3c9a86d746cf98d86c4d78520486 [2020-10-28 12:30:23,123 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-28 12:30:23,131 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-28 12:30:23,133 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-28 12:30:23,133 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-28 12:30:23,138 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-28 12:30:23,139 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 12:30:23" (1/1) ... [2020-10-28 12:30:23,143 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@194dab58 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 12:30:23, skipping insertion in model container [2020-10-28 12:30:23,143 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 12:30:23" (1/1) ... [2020-10-28 12:30:23,153 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-28 12:30:23,315 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-28 12:30:25,098 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-28 12:30:25,113 INFO L203 MainTranslator]: Completed pre-run [2020-10-28 12:30:26,127 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-28 12:30:26,174 INFO L208 MainTranslator]: Completed translation [2020-10-28 12:30:26,176 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 12:30:26 WrapperNode [2020-10-28 12:30:26,176 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-28 12:30:26,178 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-28 12:30:26,178 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-28 12:30:26,179 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-28 12:30:26,196 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 12:30:26" (1/1) ... [2020-10-28 12:30:26,198 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 12:30:26" (1/1) ... [2020-10-28 12:30:26,288 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 12:30:26" (1/1) ... [2020-10-28 12:30:26,289 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 12:30:26" (1/1) ... [2020-10-28 12:30:26,474 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 12:30:26" (1/1) ... [2020-10-28 12:30:26,519 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 12:30:26" (1/1) ... [2020-10-28 12:30:26,559 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 12:30:26" (1/1) ... [2020-10-28 12:30:26,605 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-28 12:30:26,607 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-28 12:30:26,607 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-28 12:30:26,608 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-28 12:30:26,609 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 12:30:26" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-28 12:30:26,788 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-28 12:30:26,788 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-28 12:30:26,789 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-28 12:30:26,789 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-10-28 12:30:26,789 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2020-10-28 12:30:26,789 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2020-10-28 12:30:26,789 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output4 [2020-10-28 12:30:26,790 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-28 12:30:26,790 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-10-28 12:30:26,790 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2020-10-28 12:30:26,790 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2020-10-28 12:30:26,790 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output4 [2020-10-28 12:30:26,791 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-28 12:30:26,791 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-28 12:30:26,791 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-28 12:30:26,791 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-28 12:30:26,791 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-28 12:30:26,792 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-28 12:30:26,792 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-28 12:30:26,792 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-28 12:30:26,792 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-28 12:30:26,792 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-28 12:30:26,792 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-28 12:30:26,793 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-28 12:30:26,793 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-28 12:30:37,123 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-28 12:30:37,124 INFO L298 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-28 12:30:37,128 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 12:30:37 BoogieIcfgContainer [2020-10-28 12:30:37,128 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-28 12:30:37,131 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-28 12:30:37,131 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-28 12:30:37,135 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-28 12:30:37,135 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.10 12:30:23" (1/3) ... [2020-10-28 12:30:37,137 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4f9dd087 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 12:30:37, skipping insertion in model container [2020-10-28 12:30:37,137 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 12:30:26" (2/3) ... [2020-10-28 12:30:37,137 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4f9dd087 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 12:30:37, skipping insertion in model container [2020-10-28 12:30:37,138 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 12:30:37" (3/3) ... [2020-10-28 12:30:37,140 INFO L111 eAbstractionObserver]: Analyzing ICFG Problem13_label08.c [2020-10-28 12:30:37,157 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-28 12:30:37,169 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-28 12:30:37,186 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-28 12:30:37,227 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-28 12:30:37,228 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-28 12:30:37,228 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-28 12:30:37,228 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-28 12:30:37,228 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-28 12:30:37,228 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-28 12:30:37,228 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-28 12:30:37,229 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-28 12:30:37,272 INFO L276 IsEmpty]: Start isEmpty. Operand 1123 states. [2020-10-28 12:30:37,282 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2020-10-28 12:30:37,282 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 12:30:37,283 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 12:30:37,284 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 12:30:37,291 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 12:30:37,291 INFO L82 PathProgramCache]: Analyzing trace with hash 1642604858, now seen corresponding path program 1 times [2020-10-28 12:30:37,303 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 12:30:37,304 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [975022601] [2020-10-28 12:30:37,304 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 12:30:37,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:30:37,819 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:30:38,270 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:30:38,271 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 67 [2020-10-28 12:30:38,271 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:30:38,271 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 638 [2020-10-28 12:30:38,274 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:30:38,274 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:30:38,274 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 12:30:38,275 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-28 12:30:38,275 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 58 [2020-10-28 12:30:38,275 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-28 12:30:38,459 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 12:30:38,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:30:38,477 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:30:38,504 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:30:38,504 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 12:30:38,504 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:30:38,505 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 31 [2020-10-28 12:30:38,505 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:30:38,505 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:30:38,505 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 12:30:38,506 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:30:38,506 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-28 12:30:38,506 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 12:30:38,539 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 12:30:38,540 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [975022601] [2020-10-28 12:30:38,542 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 12:30:38,543 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-28 12:30:38,545 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [574347449] [2020-10-28 12:30:38,558 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-28 12:30:38,559 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 12:30:38,584 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-28 12:30:38,585 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-28 12:30:38,588 INFO L87 Difference]: Start difference. First operand 1123 states. Second operand 5 states. [2020-10-28 12:30:56,285 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 12:30:56,285 INFO L93 Difference]: Finished difference Result 3235 states and 5915 transitions. [2020-10-28 12:30:56,286 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-28 12:30:56,288 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 57 [2020-10-28 12:30:56,290 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 12:30:56,335 INFO L225 Difference]: With dead ends: 3235 [2020-10-28 12:30:56,335 INFO L226 Difference]: Without dead ends: 2027 [2020-10-28 12:30:56,349 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-28 12:30:56,381 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2027 states. [2020-10-28 12:30:56,545 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2027 to 2010. [2020-10-28 12:30:56,547 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2010 states. [2020-10-28 12:30:56,565 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2010 states to 2010 states and 3292 transitions. [2020-10-28 12:30:56,567 INFO L78 Accepts]: Start accepts. Automaton has 2010 states and 3292 transitions. Word has length 57 [2020-10-28 12:30:56,569 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 12:30:56,569 INFO L481 AbstractCegarLoop]: Abstraction has 2010 states and 3292 transitions. [2020-10-28 12:30:56,570 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-28 12:30:56,570 INFO L276 IsEmpty]: Start isEmpty. Operand 2010 states and 3292 transitions. [2020-10-28 12:30:56,590 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2020-10-28 12:30:56,590 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 12:30:56,590 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-28 12:30:56,593 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-28 12:30:56,594 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 12:30:56,597 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 12:30:56,598 INFO L82 PathProgramCache]: Analyzing trace with hash -1153454431, now seen corresponding path program 1 times [2020-10-28 12:30:56,598 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 12:30:56,599 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1296955499] [2020-10-28 12:30:56,599 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 12:30:56,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:30:56,759 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:30:57,011 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:30:58,261 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:30:59,440 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:30:59,440 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 144 [2020-10-28 12:30:59,440 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-28 12:30:59,441 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2738 [2020-10-28 12:30:59,442 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:30:59,444 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:30:59,445 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 12:30:59,449 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-28 12:30:59,449 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 81 [2020-10-28 12:30:59,450 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 8 [2020-10-28 12:30:59,588 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 12:30:59,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:30:59,603 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:30:59,624 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:30:59,626 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 12:30:59,627 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:30:59,627 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 26 [2020-10-28 12:30:59,627 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:30:59,631 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:30:59,635 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 12:30:59,636 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:30:59,636 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-28 12:30:59,636 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 8 [2020-10-28 12:30:59,661 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 12:30:59,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:30:59,724 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:30:59,919 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:30:59,919 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-10-28 12:30:59,919 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:30:59,919 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 218 [2020-10-28 12:30:59,920 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:30:59,920 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:30:59,920 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 12:30:59,920 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 12:30:59,920 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 76 [2020-10-28 12:30:59,921 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:31:00,061 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 49 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 12:31:00,062 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1296955499] [2020-10-28 12:31:00,062 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 12:31:00,062 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-28 12:31:00,063 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [990998126] [2020-10-28 12:31:00,065 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 12:31:00,065 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 12:31:00,066 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 12:31:00,068 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-28 12:31:00,068 INFO L87 Difference]: Start difference. First operand 2010 states and 3292 transitions. Second operand 7 states. [2020-10-28 12:31:28,171 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 12:31:28,171 INFO L93 Difference]: Finished difference Result 5865 states and 9703 transitions. [2020-10-28 12:31:28,173 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-28 12:31:28,173 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 132 [2020-10-28 12:31:28,174 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 12:31:28,205 INFO L225 Difference]: With dead ends: 5865 [2020-10-28 12:31:28,206 INFO L226 Difference]: Without dead ends: 3861 [2020-10-28 12:31:28,214 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-28 12:31:28,222 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3861 states. [2020-10-28 12:31:28,360 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3861 to 3762. [2020-10-28 12:31:28,360 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3762 states. [2020-10-28 12:31:28,381 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3762 states to 3762 states and 5633 transitions. [2020-10-28 12:31:28,382 INFO L78 Accepts]: Start accepts. Automaton has 3762 states and 5633 transitions. Word has length 132 [2020-10-28 12:31:28,384 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 12:31:28,385 INFO L481 AbstractCegarLoop]: Abstraction has 3762 states and 5633 transitions. [2020-10-28 12:31:28,385 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 12:31:28,385 INFO L276 IsEmpty]: Start isEmpty. Operand 3762 states and 5633 transitions. [2020-10-28 12:31:28,393 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2020-10-28 12:31:28,394 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 12:31:28,394 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 12:31:28,394 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-28 12:31:28,395 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 12:31:28,396 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 12:31:28,396 INFO L82 PathProgramCache]: Analyzing trace with hash 325523997, now seen corresponding path program 1 times [2020-10-28 12:31:28,396 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 12:31:28,397 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2051438796] [2020-10-28 12:31:28,397 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 12:31:28,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:31:28,488 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:31:28,929 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:31:29,844 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:31:29,845 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 158 [2020-10-28 12:31:29,845 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 12:31:29,845 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1390 [2020-10-28 12:31:29,845 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:31:29,846 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:31:29,846 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 12:31:29,846 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-28 12:31:29,846 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 95 [2020-10-28 12:31:29,846 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:31:29,993 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 12:31:30,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:31:30,007 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:31:30,025 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:31:30,025 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 12:31:30,025 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:31:30,025 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-10-28 12:31:30,026 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:31:30,026 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:31:30,026 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 12:31:30,026 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:31:30,026 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-28 12:31:30,027 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:31:30,056 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 12:31:30,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:31:30,099 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:31:30,304 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:31:30,305 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 90 [2020-10-28 12:31:30,305 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:31:30,305 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 222 [2020-10-28 12:31:30,305 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:31:30,305 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:31:30,306 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 12:31:30,306 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 12:31:30,306 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 90 [2020-10-28 12:31:30,306 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:31:30,479 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 49 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 12:31:30,480 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2051438796] [2020-10-28 12:31:30,480 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 12:31:30,480 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-28 12:31:30,480 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [820637304] [2020-10-28 12:31:30,482 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 12:31:30,483 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 12:31:30,484 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 12:31:30,487 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-28 12:31:30,487 INFO L87 Difference]: Start difference. First operand 3762 states and 5633 transitions. Second operand 7 states. [2020-10-28 12:31:56,707 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 12:31:56,708 INFO L93 Difference]: Finished difference Result 9320 states and 13746 transitions. [2020-10-28 12:31:56,710 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-28 12:31:56,710 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 146 [2020-10-28 12:31:56,711 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 12:31:56,746 INFO L225 Difference]: With dead ends: 9320 [2020-10-28 12:31:56,746 INFO L226 Difference]: Without dead ends: 5564 [2020-10-28 12:31:56,757 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2020-10-28 12:31:56,766 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5564 states. [2020-10-28 12:31:56,935 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5564 to 5473. [2020-10-28 12:31:56,935 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5473 states. [2020-10-28 12:31:56,971 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5473 states to 5473 states and 7696 transitions. [2020-10-28 12:31:56,975 INFO L78 Accepts]: Start accepts. Automaton has 5473 states and 7696 transitions. Word has length 146 [2020-10-28 12:31:56,975 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 12:31:56,976 INFO L481 AbstractCegarLoop]: Abstraction has 5473 states and 7696 transitions. [2020-10-28 12:31:56,976 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 12:31:56,976 INFO L276 IsEmpty]: Start isEmpty. Operand 5473 states and 7696 transitions. [2020-10-28 12:31:56,985 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 163 [2020-10-28 12:31:56,985 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 12:31:56,986 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-28 12:31:56,986 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-28 12:31:56,986 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 12:31:56,988 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 12:31:56,989 INFO L82 PathProgramCache]: Analyzing trace with hash 356618045, now seen corresponding path program 1 times [2020-10-28 12:31:56,989 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 12:31:56,989 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1130968328] [2020-10-28 12:31:56,989 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 12:31:57,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:31:57,077 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:31:57,381 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:31:58,396 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:31:58,396 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 174 [2020-10-28 12:31:58,397 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 12:31:58,397 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1350 [2020-10-28 12:31:58,397 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:31:58,397 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:31:58,397 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 12:31:58,398 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-28 12:31:58,398 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 111 [2020-10-28 12:31:58,398 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:31:58,544 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 12:31:58,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:31:58,555 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:31:58,570 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:31:58,570 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 12:31:58,570 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:31:58,571 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-28 12:31:58,571 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:31:58,571 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:31:58,571 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 12:31:58,571 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:31:58,572 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-28 12:31:58,572 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 12:31:58,600 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 12:31:58,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:31:58,661 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:31:58,856 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:31:58,857 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 106 [2020-10-28 12:31:58,857 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:31:58,857 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 221 [2020-10-28 12:31:58,857 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:31:58,858 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:31:58,858 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 12:31:58,858 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 12:31:58,858 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 106 [2020-10-28 12:31:58,858 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:31:58,994 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 49 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 12:31:58,994 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1130968328] [2020-10-28 12:31:58,995 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 12:31:58,995 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-28 12:31:58,995 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1231535619] [2020-10-28 12:31:58,996 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 12:31:58,996 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 12:31:58,997 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 12:31:58,997 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-28 12:31:58,998 INFO L87 Difference]: Start difference. First operand 5473 states and 7696 transitions. Second operand 7 states. [2020-10-28 12:32:22,792 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 12:32:22,793 INFO L93 Difference]: Finished difference Result 16429 states and 23862 transitions. [2020-10-28 12:32:22,794 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-28 12:32:22,794 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 162 [2020-10-28 12:32:22,797 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 12:32:22,851 INFO L225 Difference]: With dead ends: 16429 [2020-10-28 12:32:22,851 INFO L226 Difference]: Without dead ends: 10962 [2020-10-28 12:32:22,869 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2020-10-28 12:32:22,883 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10962 states. [2020-10-28 12:32:23,147 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10962 to 10730. [2020-10-28 12:32:23,147 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10730 states. [2020-10-28 12:32:23,176 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10730 states to 10730 states and 13945 transitions. [2020-10-28 12:32:23,176 INFO L78 Accepts]: Start accepts. Automaton has 10730 states and 13945 transitions. Word has length 162 [2020-10-28 12:32:23,177 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 12:32:23,177 INFO L481 AbstractCegarLoop]: Abstraction has 10730 states and 13945 transitions. [2020-10-28 12:32:23,177 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 12:32:23,177 INFO L276 IsEmpty]: Start isEmpty. Operand 10730 states and 13945 transitions. [2020-10-28 12:32:23,182 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 258 [2020-10-28 12:32:23,183 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 12:32:23,183 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 12:32:23,183 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-28 12:32:23,183 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 12:32:23,184 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 12:32:23,184 INFO L82 PathProgramCache]: Analyzing trace with hash 1166360278, now seen corresponding path program 1 times [2020-10-28 12:32:23,184 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 12:32:23,185 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [90115113] [2020-10-28 12:32:23,185 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 12:32:23,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:32:23,317 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:32:23,495 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:32:24,368 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:32:28,286 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:32:28,287 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 271 [2020-10-28 12:32:28,287 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-28 12:32:28,287 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5035 [2020-10-28 12:32:28,287 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:32:28,288 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:32:28,288 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 12:32:28,288 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 103 [2020-10-28 12:32:28,288 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 110 [2020-10-28 12:32:28,288 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 12:32:28,476 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 12:32:28,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:32:28,481 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:32:28,486 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:32:28,486 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 12:32:28,486 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:32:28,487 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-28 12:32:28,487 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:32:28,487 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:32:28,487 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 12:32:28,487 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:32:28,487 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 12:32:28,487 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:32:28,515 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 12:32:28,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:32:28,559 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:32:28,648 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:32:28,653 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 94 [2020-10-28 12:32:28,654 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:32:28,654 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 106 [2020-10-28 12:32:28,654 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:32:28,654 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:32:28,654 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 12:32:28,654 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:32:28,655 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 88 [2020-10-28 12:32:28,655 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:32:28,710 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2020-10-28 12:32:28,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:32:28,767 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:32:29,019 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:32:29,019 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 108 [2020-10-28 12:32:29,019 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:32:29,020 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 273 [2020-10-28 12:32:29,020 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:32:29,020 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:32:29,021 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 12:32:29,021 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 12:32:29,021 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 108 [2020-10-28 12:32:29,021 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 12:32:29,178 INFO L134 CoverageAnalysis]: Checked inductivity of 191 backedges. 188 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-28 12:32:29,178 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [90115113] [2020-10-28 12:32:29,178 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 12:32:29,178 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-28 12:32:29,179 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1553825710] [2020-10-28 12:32:29,180 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 12:32:29,180 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 12:32:29,180 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 12:32:29,181 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-28 12:32:29,181 INFO L87 Difference]: Start difference. First operand 10730 states and 13945 transitions. Second operand 7 states. [2020-10-28 12:32:58,182 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 12:32:58,182 INFO L93 Difference]: Finished difference Result 29640 states and 40520 transitions. [2020-10-28 12:32:58,185 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-28 12:32:58,185 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 257 [2020-10-28 12:32:58,186 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 12:32:58,275 INFO L225 Difference]: With dead ends: 29640 [2020-10-28 12:32:58,276 INFO L226 Difference]: Without dead ends: 19719 [2020-10-28 12:32:58,302 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 6 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-28 12:32:58,328 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19719 states. [2020-10-28 12:32:58,801 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19719 to 19523. [2020-10-28 12:32:58,801 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19523 states. [2020-10-28 12:32:58,851 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19523 states to 19523 states and 26735 transitions. [2020-10-28 12:32:58,852 INFO L78 Accepts]: Start accepts. Automaton has 19523 states and 26735 transitions. Word has length 257 [2020-10-28 12:32:58,852 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 12:32:58,852 INFO L481 AbstractCegarLoop]: Abstraction has 19523 states and 26735 transitions. [2020-10-28 12:32:58,853 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 12:32:58,853 INFO L276 IsEmpty]: Start isEmpty. Operand 19523 states and 26735 transitions. [2020-10-28 12:32:58,858 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 263 [2020-10-28 12:32:58,858 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 12:32:58,859 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 12:32:58,859 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-28 12:32:58,859 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 12:32:58,859 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 12:32:58,860 INFO L82 PathProgramCache]: Analyzing trace with hash -1183041286, now seen corresponding path program 1 times [2020-10-28 12:32:58,860 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 12:32:58,860 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [674306658] [2020-10-28 12:32:58,860 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 12:32:58,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:32:58,969 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:32:59,226 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:32:59,402 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:33:00,720 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:33:02,037 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:33:02,038 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 276 [2020-10-28 12:33:02,038 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-28 12:33:02,038 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3109 [2020-10-28 12:33:02,038 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:33:02,038 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:33:02,038 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 12:33:02,039 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 139 [2020-10-28 12:33:02,039 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 79 [2020-10-28 12:33:02,039 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:33:02,231 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 12:33:02,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:33:02,237 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:33:02,244 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:33:02,244 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 12:33:02,244 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:33:02,245 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-28 12:33:02,245 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:33:02,245 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:33:02,245 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 12:33:02,246 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:33:02,246 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 12:33:02,246 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 12:33:02,281 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 12:33:02,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:33:02,356 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:33:02,507 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:33:02,507 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 130 [2020-10-28 12:33:02,508 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:33:02,508 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 177 [2020-10-28 12:33:02,508 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:33:02,509 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:33:02,509 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 12:33:02,509 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:33:02,509 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 124 [2020-10-28 12:33:02,509 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 12:33:02,596 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 137 [2020-10-28 12:33:02,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:33:02,638 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:33:02,827 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:33:02,827 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 77 [2020-10-28 12:33:02,828 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:33:02,828 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 207 [2020-10-28 12:33:02,828 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:33:02,828 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:33:02,828 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 12:33:02,829 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 12:33:02,829 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 77 [2020-10-28 12:33:02,829 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 12:33:02,974 INFO L134 CoverageAnalysis]: Checked inductivity of 174 backedges. 171 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-28 12:33:02,974 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [674306658] [2020-10-28 12:33:02,974 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 12:33:02,975 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-28 12:33:02,975 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [903716904] [2020-10-28 12:33:02,975 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-28 12:33:02,976 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 12:33:02,976 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-28 12:33:02,976 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-10-28 12:33:02,977 INFO L87 Difference]: Start difference. First operand 19523 states and 26735 transitions. Second operand 8 states. [2020-10-28 12:33:36,631 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 12:33:36,632 INFO L93 Difference]: Finished difference Result 64420 states and 97388 transitions. [2020-10-28 12:33:36,635 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-28 12:33:36,635 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 262 [2020-10-28 12:33:36,636 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 12:33:36,822 INFO L225 Difference]: With dead ends: 64420 [2020-10-28 12:33:36,822 INFO L226 Difference]: Without dead ends: 45706 [2020-10-28 12:33:36,880 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 35 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=65, Invalid=175, Unknown=0, NotChecked=0, Total=240 [2020-10-28 12:33:36,929 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45706 states. [2020-10-28 12:33:38,009 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45706 to 45569. [2020-10-28 12:33:38,010 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 45569 states. [2020-10-28 12:33:38,147 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45569 states to 45569 states and 60730 transitions. [2020-10-28 12:33:38,148 INFO L78 Accepts]: Start accepts. Automaton has 45569 states and 60730 transitions. Word has length 262 [2020-10-28 12:33:38,149 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 12:33:38,149 INFO L481 AbstractCegarLoop]: Abstraction has 45569 states and 60730 transitions. [2020-10-28 12:33:38,149 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-28 12:33:38,149 INFO L276 IsEmpty]: Start isEmpty. Operand 45569 states and 60730 transitions. [2020-10-28 12:33:38,155 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 280 [2020-10-28 12:33:38,156 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 12:33:38,156 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 12:33:38,156 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-28 12:33:38,157 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 12:33:38,159 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 12:33:38,159 INFO L82 PathProgramCache]: Analyzing trace with hash 9684843, now seen corresponding path program 1 times [2020-10-28 12:33:38,159 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 12:33:38,160 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1922837731] [2020-10-28 12:33:38,160 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 12:33:38,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:33:38,611 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:33:38,953 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:33:39,346 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:33:40,286 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:33:42,007 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:33:42,007 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 293 [2020-10-28 12:33:42,007 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-28 12:33:42,007 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3486 [2020-10-28 12:33:42,008 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:33:42,008 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:33:42,008 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 12:33:42,008 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 139 [2020-10-28 12:33:42,008 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 96 [2020-10-28 12:33:42,008 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:33:42,180 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 12:33:42,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:33:42,184 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:33:42,190 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:33:42,191 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 12:33:42,191 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:33:42,191 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-28 12:33:42,191 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:33:42,191 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:33:42,191 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 12:33:42,192 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:33:42,192 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 12:33:42,192 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:33:42,233 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 12:33:42,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:33:42,292 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:33:42,408 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:33:42,408 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 130 [2020-10-28 12:33:42,408 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:33:42,409 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 141 [2020-10-28 12:33:42,409 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:33:42,409 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:33:42,409 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 12:33:42,409 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:33:42,409 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 124 [2020-10-28 12:33:42,410 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:33:42,465 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 137 [2020-10-28 12:33:42,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:33:42,503 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:33:42,634 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:33:42,634 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 94 [2020-10-28 12:33:42,635 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:33:42,635 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 145 [2020-10-28 12:33:42,635 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:33:42,635 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:33:42,635 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 12:33:42,635 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 12:33:42,636 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 94 [2020-10-28 12:33:42,636 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:33:42,825 INFO L134 CoverageAnalysis]: Checked inductivity of 191 backedges. 188 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-28 12:33:42,825 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1922837731] [2020-10-28 12:33:42,825 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 12:33:42,826 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-28 12:33:42,826 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [478239638] [2020-10-28 12:33:42,826 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 12:33:42,827 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 12:33:42,827 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 12:33:42,828 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-28 12:33:42,828 INFO L87 Difference]: Start difference. First operand 45569 states and 60730 transitions. Second operand 7 states.