/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.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 SingleStatement --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=0.2 --traceabstraction.additional.smt.options log-additional-information=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem11_label36.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-25 11:20:13,069 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 11:20:13,073 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 11:20:13,114 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 11:20:13,115 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 11:20:13,116 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 11:20:13,118 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 11:20:13,119 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 11:20:13,121 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 11:20:13,122 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 11:20:13,123 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 11:20:13,125 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 11:20:13,125 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 11:20:13,126 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 11:20:13,128 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 11:20:13,129 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 11:20:13,130 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 11:20:13,131 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 11:20:13,133 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 11:20:13,135 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 11:20:13,137 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 11:20:13,138 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 11:20:13,139 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 11:20:13,140 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 11:20:13,143 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 11:20:13,143 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 11:20:13,144 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 11:20:13,145 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 11:20:13,145 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 11:20:13,146 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 11:20:13,147 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 11:20:13,148 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 11:20:13,149 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 11:20:13,150 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 11:20:13,151 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 11:20:13,151 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 11:20:13,152 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 11:20:13,152 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 11:20:13,152 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 11:20:13,153 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 11:20:13,154 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 11:20:13,155 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 [2020-09-25 11:20:13,181 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 11:20:13,181 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 11:20:13,183 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 11:20:13,183 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 11:20:13,183 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 11:20:13,183 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 11:20:13,183 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 11:20:13,184 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 11:20:13,184 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 11:20:13,184 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 11:20:13,184 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 11:20:13,184 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 11:20:13,185 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 11:20:13,185 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 11:20:13,185 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 11:20:13,185 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 11:20:13,185 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 11:20:13,186 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 11:20:13,186 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 11:20:13,186 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 11:20:13,186 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 11:20:13,186 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 11:20:13,187 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 11:20:13,187 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 11:20:13,187 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 11:20:13,187 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 11:20:13,187 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 11:20:13,188 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 11:20:13,188 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 11:20:13,188 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode 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 -> SingleStatement 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=0.2;log-additional-information=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=0.2;log-additional-information=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=0.2;log-additional-information=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=0.2;log-additional-information=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=0.2;log-additional-information=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=0.2;log-additional-information=true; [2020-09-25 11:20:13,640 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 11:20:13,658 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 11:20:13,663 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 11:20:13,664 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 11:20:13,665 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 11:20:13,666 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem11_label36.c [2020-09-25 11:20:13,749 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/c9e820294/6684fbaadb5d43f3951236217d21a75c/FLAGe381c40f5 [2020-09-25 11:20:14,512 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 11:20:14,513 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem11_label36.c [2020-09-25 11:20:14,531 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/c9e820294/6684fbaadb5d43f3951236217d21a75c/FLAGe381c40f5 [2020-09-25 11:20:14,657 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/c9e820294/6684fbaadb5d43f3951236217d21a75c [2020-09-25 11:20:14,675 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 11:20:14,680 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 11:20:14,682 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 11:20:14,682 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 11:20:14,686 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 11:20:14,687 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 11:20:14" (1/1) ... [2020-09-25 11:20:14,692 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@406521a6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:20:14, skipping insertion in model container [2020-09-25 11:20:14,692 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 11:20:14" (1/1) ... [2020-09-25 11:20:14,701 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 11:20:14,763 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 11:20:15,567 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 11:20:15,581 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 11:20:15,811 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 11:20:15,833 INFO L208 MainTranslator]: Completed translation [2020-09-25 11:20:15,834 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:20:15 WrapperNode [2020-09-25 11:20:15,834 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 11:20:15,835 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 11:20:15,835 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 11:20:15,836 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 11:20:15,853 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:20:15" (1/1) ... [2020-09-25 11:20:15,853 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:20:15" (1/1) ... [2020-09-25 11:20:15,878 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:20:15" (1/1) ... [2020-09-25 11:20:15,879 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:20:15" (1/1) ... [2020-09-25 11:20:15,940 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:20:15" (1/1) ... [2020-09-25 11:20:15,954 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:20:15" (1/1) ... [2020-09-25 11:20:15,966 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:20:15" (1/1) ... [2020-09-25 11:20:15,982 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 11:20:15,983 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 11:20:15,983 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 11:20:15,983 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 11:20:15,988 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:20:15" (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 [2020-09-25 11:20:16,080 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 11:20:16,080 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 11:20:16,080 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-09-25 11:20:16,081 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 11:20:16,081 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-09-25 11:20:16,081 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 11:20:16,081 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-25 11:20:16,081 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-09-25 11:20:16,082 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 11:20:16,082 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 11:20:16,082 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 11:20:18,654 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 11:20:18,655 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-09-25 11:20:18,666 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 11:20:18 BoogieIcfgContainer [2020-09-25 11:20:18,667 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 11:20:18,668 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 11:20:18,668 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 11:20:18,672 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 11:20:18,673 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 11:20:14" (1/3) ... [2020-09-25 11:20:18,674 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@15c76eec and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 11:20:18, skipping insertion in model container [2020-09-25 11:20:18,674 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:20:15" (2/3) ... [2020-09-25 11:20:18,675 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@15c76eec and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 11:20:18, skipping insertion in model container [2020-09-25 11:20:18,675 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 11:20:18" (3/3) ... [2020-09-25 11:20:18,677 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem11_label36.c [2020-09-25 11:20:18,690 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 11:20:18,705 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-25 11:20:18,729 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-25 11:20:18,767 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 11:20:18,768 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 11:20:18,768 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 11:20:18,768 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 11:20:18,768 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 11:20:18,768 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 11:20:18,768 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 11:20:18,769 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 11:20:18,814 INFO L276 IsEmpty]: Start isEmpty. Operand 813 states. [2020-09-25 11:20:18,828 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2020-09-25 11:20:18,829 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 11:20:18,830 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] [2020-09-25 11:20:18,831 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 11:20:18,840 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 11:20:18,841 INFO L82 PathProgramCache]: Analyzing trace with hash -1149620956, now seen corresponding path program 1 times [2020-09-25 11:20:18,853 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 11:20:18,854 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1667098027] [2020-09-25 11:20:18,854 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 11:20:19,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:20:19,138 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:20:19,279 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:20:19,430 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:20:20,024 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:20:20,024 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 43 [2020-09-25 11:20:20,025 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-25 11:20:20,025 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 923 [2020-09-25 11:20:20,028 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:20:20,029 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:20:20,029 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 11:20:20,029 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-09-25 11:20:20,030 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-09-25 11:20:20,030 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-09-25 11:20:20,134 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 11:20:20,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:20:20,149 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:20:20,173 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:20:20,173 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-09-25 11:20:20,174 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:20:20,174 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 28 [2020-09-25 11:20:20,174 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:20:20,175 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:20:20,175 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 11:20:20,175 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:20:20,175 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-09-25 11:20:20,176 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:20:20,200 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 11:20:20,202 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1667098027] [2020-09-25 11:20:20,204 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 11:20:20,204 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-25 11:20:20,205 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [74417739] [2020-09-25 11:20:20,212 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-25 11:20:20,213 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 11:20:20,231 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-25 11:20:20,232 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-25 11:20:20,234 INFO L87 Difference]: Start difference. First operand 813 states. Second operand 4 states. [2020-09-25 11:20:24,404 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 11:20:24,404 INFO L93 Difference]: Finished difference Result 1957 states and 2552 transitions. [2020-09-25 11:20:24,405 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-25 11:20:24,407 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 34 [2020-09-25 11:20:24,407 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 11:20:24,435 INFO L225 Difference]: With dead ends: 1957 [2020-09-25 11:20:24,435 INFO L226 Difference]: Without dead ends: 1087 [2020-09-25 11:20:24,448 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-09-25 11:20:24,473 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1087 states. [2020-09-25 11:20:24,583 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1087 to 1039. [2020-09-25 11:20:24,584 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1039 states. [2020-09-25 11:20:24,589 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1039 states to 1039 states and 1227 transitions. [2020-09-25 11:20:24,592 INFO L78 Accepts]: Start accepts. Automaton has 1039 states and 1227 transitions. Word has length 34 [2020-09-25 11:20:24,594 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 11:20:24,594 INFO L479 AbstractCegarLoop]: Abstraction has 1039 states and 1227 transitions. [2020-09-25 11:20:24,594 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-25 11:20:24,594 INFO L276 IsEmpty]: Start isEmpty. Operand 1039 states and 1227 transitions. [2020-09-25 11:20:24,603 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2020-09-25 11:20:24,603 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 11:20:24,604 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 11:20:24,605 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 11:20:24,605 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 11:20:24,606 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 11:20:24,606 INFO L82 PathProgramCache]: Analyzing trace with hash 1328266352, now seen corresponding path program 1 times [2020-09-25 11:20:24,606 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 11:20:24,606 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [898585778] [2020-09-25 11:20:24,607 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 11:20:24,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:20:24,711 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:20:24,813 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:20:25,497 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:20:25,645 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:20:27,680 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:20:27,681 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 127 [2020-09-25 11:20:27,681 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-25 11:20:27,682 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3008 [2020-09-25 11:20:27,683 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:20:27,683 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:20:27,683 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 11:20:27,683 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-09-25 11:20:27,684 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 83 [2020-09-25 11:20:27,684 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:20:27,779 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 11:20:27,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:20:27,790 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:20:27,814 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:20:27,815 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-09-25 11:20:27,815 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:20:27,815 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 28 [2020-09-25 11:20:27,816 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:20:27,816 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:20:27,816 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 11:20:27,817 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:20:27,817 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-09-25 11:20:27,817 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:20:27,836 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-09-25 11:20:27,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:20:27,890 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:20:28,083 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:20:28,083 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 78 [2020-09-25 11:20:28,084 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:20:28,091 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 215 [2020-09-25 11:20:28,092 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:20:28,093 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:20:28,093 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 11:20:28,093 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 11:20:28,093 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 77 [2020-09-25 11:20:28,093 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:20:28,187 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 11:20:28,188 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [898585778] [2020-09-25 11:20:28,188 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 11:20:28,188 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-09-25 11:20:28,189 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [96647955] [2020-09-25 11:20:28,191 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-25 11:20:28,191 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 11:20:28,191 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-25 11:20:28,192 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-09-25 11:20:28,192 INFO L87 Difference]: Start difference. First operand 1039 states and 1227 transitions. Second operand 7 states. [2020-09-25 11:20:33,048 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 11:20:33,049 INFO L93 Difference]: Finished difference Result 2751 states and 3333 transitions. [2020-09-25 11:20:33,049 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-09-25 11:20:33,049 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 116 [2020-09-25 11:20:33,050 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 11:20:33,060 INFO L225 Difference]: With dead ends: 2751 [2020-09-25 11:20:33,061 INFO L226 Difference]: Without dead ends: 1729 [2020-09-25 11:20:33,065 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-09-25 11:20:33,068 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1729 states. [2020-09-25 11:20:33,127 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1729 to 1444. [2020-09-25 11:20:33,128 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1444 states. [2020-09-25 11:20:33,133 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1444 states to 1444 states and 1752 transitions. [2020-09-25 11:20:33,134 INFO L78 Accepts]: Start accepts. Automaton has 1444 states and 1752 transitions. Word has length 116 [2020-09-25 11:20:33,136 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 11:20:33,136 INFO L479 AbstractCegarLoop]: Abstraction has 1444 states and 1752 transitions. [2020-09-25 11:20:33,136 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-25 11:20:33,136 INFO L276 IsEmpty]: Start isEmpty. Operand 1444 states and 1752 transitions. [2020-09-25 11:20:33,149 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 120 [2020-09-25 11:20:33,149 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 11:20:33,149 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 11:20:33,150 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-25 11:20:33,150 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 11:20:33,150 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 11:20:33,151 INFO L82 PathProgramCache]: Analyzing trace with hash -2011577567, now seen corresponding path program 1 times [2020-09-25 11:20:33,151 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 11:20:33,151 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [695740322] [2020-09-25 11:20:33,151 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 11:20:33,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:20:33,264 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:20:33,340 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:20:33,420 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:20:33,792 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:20:35,283 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:20:35,493 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:20:38,237 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:20:38,239 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 130 [2020-09-25 11:20:38,239 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-09-25 11:20:38,239 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5005 [2020-09-25 11:20:38,240 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:20:38,240 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:20:38,240 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-25 11:20:38,240 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-09-25 11:20:38,241 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 89 [2020-09-25 11:20:38,241 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:20:38,315 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 11:20:38,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:20:38,324 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:20:38,348 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:20:38,348 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-09-25 11:20:38,348 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:20:38,349 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 26 [2020-09-25 11:20:38,349 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:20:38,349 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:20:38,349 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 11:20:38,350 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:20:38,350 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-25 11:20:38,350 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:20:38,377 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-09-25 11:20:38,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:20:38,420 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:20:38,578 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:20:38,578 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 81 [2020-09-25 11:20:38,578 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:20:38,578 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 175 [2020-09-25 11:20:38,579 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:20:38,579 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:20:38,579 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 11:20:38,579 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 11:20:38,580 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 80 [2020-09-25 11:20:38,580 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:20:38,756 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 11:20:38,757 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [695740322] [2020-09-25 11:20:38,757 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 11:20:38,758 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-09-25 11:20:38,758 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1396864118] [2020-09-25 11:20:38,760 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-25 11:20:38,760 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 11:20:38,761 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-25 11:20:38,761 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-09-25 11:20:38,762 INFO L87 Difference]: Start difference. First operand 1444 states and 1752 transitions. Second operand 8 states. [2020-09-25 11:20:42,429 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 11:20:42,430 INFO L93 Difference]: Finished difference Result 3312 states and 4042 transitions. [2020-09-25 11:20:42,430 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-09-25 11:20:42,431 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 119 [2020-09-25 11:20:42,431 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 11:20:42,443 INFO L225 Difference]: With dead ends: 3312 [2020-09-25 11:20:42,444 INFO L226 Difference]: Without dead ends: 1885 [2020-09-25 11:20:42,449 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=47, Invalid=109, Unknown=0, NotChecked=0, Total=156 [2020-09-25 11:20:42,452 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1885 states. [2020-09-25 11:20:42,511 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1885 to 1855. [2020-09-25 11:20:42,512 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1855 states. [2020-09-25 11:20:42,521 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1855 states to 1855 states and 2200 transitions. [2020-09-25 11:20:42,522 INFO L78 Accepts]: Start accepts. Automaton has 1855 states and 2200 transitions. Word has length 119 [2020-09-25 11:20:42,525 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 11:20:42,529 INFO L479 AbstractCegarLoop]: Abstraction has 1855 states and 2200 transitions. [2020-09-25 11:20:42,529 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-09-25 11:20:42,529 INFO L276 IsEmpty]: Start isEmpty. Operand 1855 states and 2200 transitions. [2020-09-25 11:20:42,531 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 176 [2020-09-25 11:20:42,531 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 11:20:42,532 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 11:20:42,532 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-25 11:20:42,532 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 11:20:42,532 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 11:20:42,533 INFO L82 PathProgramCache]: Analyzing trace with hash -157424678, now seen corresponding path program 1 times [2020-09-25 11:20:42,533 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 11:20:42,534 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [782193692] [2020-09-25 11:20:42,534 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 11:20:42,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:20:42,628 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:20:42,767 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:20:42,996 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:20:43,153 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:20:44,871 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:20:44,871 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 186 [2020-09-25 11:20:44,871 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-25 11:20:44,872 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2287 [2020-09-25 11:20:44,872 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:20:44,872 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:20:44,872 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-09-25 11:20:44,873 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-09-25 11:20:44,873 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 171 [2020-09-25 11:20:44,873 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:20:45,029 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 11:20:45,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:20:45,035 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:20:45,050 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:20:45,051 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-09-25 11:20:45,051 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:20:45,051 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-09-25 11:20:45,052 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:20:45,052 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:20:45,052 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 11:20:45,052 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:20:45,053 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-09-25 11:20:45,053 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:20:45,070 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-09-25 11:20:45,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:20:45,132 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:20:45,315 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:20:45,316 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 137 [2020-09-25 11:20:45,316 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:20:45,316 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 212 [2020-09-25 11:20:45,317 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:20:45,317 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:20:45,317 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 11:20:45,317 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 11:20:45,317 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 136 [2020-09-25 11:20:45,318 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:20:45,543 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 11:20:45,543 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [782193692] [2020-09-25 11:20:45,544 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 11:20:45,544 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-09-25 11:20:45,544 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2070317640] [2020-09-25 11:20:45,546 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-25 11:20:45,546 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 11:20:45,546 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-25 11:20:45,547 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2020-09-25 11:20:45,548 INFO L87 Difference]: Start difference. First operand 1855 states and 2200 transitions. Second operand 8 states. [2020-09-25 11:20:47,521 WARN L193 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 45 DAG size of output: 40 [2020-09-25 11:20:51,594 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 11:20:51,594 INFO L93 Difference]: Finished difference Result 4444 states and 5445 transitions. [2020-09-25 11:20:51,596 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-09-25 11:20:51,596 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 175 [2020-09-25 11:20:51,597 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 11:20:51,616 INFO L225 Difference]: With dead ends: 4444 [2020-09-25 11:20:51,616 INFO L226 Difference]: Without dead ends: 3001 [2020-09-25 11:20:51,622 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=51, Invalid=105, Unknown=0, NotChecked=0, Total=156 [2020-09-25 11:20:51,627 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3001 states. [2020-09-25 11:20:51,704 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3001 to 2849. [2020-09-25 11:20:51,704 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2849 states. [2020-09-25 11:20:51,716 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2849 states to 2849 states and 3404 transitions. [2020-09-25 11:20:51,716 INFO L78 Accepts]: Start accepts. Automaton has 2849 states and 3404 transitions. Word has length 175 [2020-09-25 11:20:51,718 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 11:20:51,718 INFO L479 AbstractCegarLoop]: Abstraction has 2849 states and 3404 transitions. [2020-09-25 11:20:51,718 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-09-25 11:20:51,718 INFO L276 IsEmpty]: Start isEmpty. Operand 2849 states and 3404 transitions. [2020-09-25 11:20:51,722 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 245 [2020-09-25 11:20:51,723 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 11:20:51,723 INFO L422 BasicCegarLoop]: trace histogram [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, 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] [2020-09-25 11:20:51,723 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-25 11:20:51,724 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 11:20:51,724 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 11:20:51,724 INFO L82 PathProgramCache]: Analyzing trace with hash -485643698, now seen corresponding path program 1 times [2020-09-25 11:20:51,724 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 11:20:51,725 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1237919960] [2020-09-25 11:20:51,725 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 11:20:51,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:20:51,871 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:20:51,984 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:20:53,725 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:20:53,901 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:20:55,393 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:20:56,826 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:20:56,827 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 257 [2020-09-25 11:20:56,827 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-09-25 11:20:56,827 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5003 [2020-09-25 11:20:56,828 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:20:56,828 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:20:56,829 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-09-25 11:20:56,829 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-09-25 11:20:56,829 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 235 [2020-09-25 11:20:56,830 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:20:57,016 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 11:20:57,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:20:57,025 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:20:57,051 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:20:57,051 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-09-25 11:20:57,051 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:20:57,052 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 29 [2020-09-25 11:20:57,052 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:20:57,052 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:20:57,053 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 11:20:57,053 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:20:57,054 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-09-25 11:20:57,054 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:20:57,127 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-09-25 11:20:57,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:20:57,200 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:20:57,295 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:20:57,480 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:20:57,481 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 121 [2020-09-25 11:20:57,481 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 11:20:57,481 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 311 [2020-09-25 11:20:57,482 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:20:57,482 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:20:57,482 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 11:20:57,482 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:20:57,483 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 111 [2020-09-25 11:20:57,483 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:20:57,557 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 148 [2020-09-25 11:20:57,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:20:57,610 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:20:57,871 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:20:58,235 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:20:58,236 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 81 [2020-09-25 11:20:58,236 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 11:20:58,236 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 648 [2020-09-25 11:20:58,236 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:20:58,237 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:20:58,238 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 11:20:58,238 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:20:58,238 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 77 [2020-09-25 11:20:58,238 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 11:20:58,430 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 33 proven. 4 refuted. 0 times theorem prover too weak. 75 trivial. 0 not checked. [2020-09-25 11:20:58,430 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1237919960] [2020-09-25 11:20:58,430 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 11:20:58,431 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-09-25 11:20:58,431 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1383379547] [2020-09-25 11:20:58,431 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-09-25 11:20:58,432 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 11:20:58,432 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-09-25 11:20:58,432 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2020-09-25 11:20:58,432 INFO L87 Difference]: Start difference. First operand 2849 states and 3404 transitions. Second operand 11 states.