/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=0.4 --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/Problem10_label22.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-25 13:34:20,702 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 13:34:20,706 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 13:34:20,732 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 13:34:20,733 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 13:34:20,734 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 13:34:20,736 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 13:34:20,738 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 13:34:20,740 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 13:34:20,741 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 13:34:20,742 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 13:34:20,743 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 13:34:20,744 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 13:34:20,745 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 13:34:20,746 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 13:34:20,748 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 13:34:20,751 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 13:34:20,752 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 13:34:20,754 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 13:34:20,756 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 13:34:20,758 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 13:34:20,759 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 13:34:20,762 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 13:34:20,763 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 13:34:20,766 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 13:34:20,766 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 13:34:20,766 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 13:34:20,767 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 13:34:20,768 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 13:34:20,769 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 13:34:20,769 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 13:34:20,770 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 13:34:20,771 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 13:34:20,772 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 13:34:20,774 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 13:34:20,774 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 13:34:20,775 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 13:34:20,775 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 13:34:20,775 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 13:34:20,777 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 13:34:20,778 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 13:34:20,779 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 13:34:20,806 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 13:34:20,807 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 13:34:20,808 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 13:34:20,808 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 13:34:20,809 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 13:34:20,809 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 13:34:20,809 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 13:34:20,809 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 13:34:20,810 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 13:34:20,810 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 13:34:20,810 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 13:34:20,810 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 13:34:20,810 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 13:34:20,811 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 13:34:20,811 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 13:34:20,811 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 13:34:20,811 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 13:34:20,811 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 13:34:20,812 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 13:34:20,812 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 13:34:20,812 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 13:34:20,812 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 13:34:20,813 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 13:34:20,813 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 13:34:20,813 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 13:34:20,813 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 13:34:20,813 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 13:34:20,814 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 13:34:20,814 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 13:34:20,814 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=0.4;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=0.4;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=0.4;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=0.4;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=0.4;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=0.4;log-additional-information=true; [2020-09-25 13:34:21,302 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 13:34:21,321 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 13:34:21,326 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 13:34:21,328 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 13:34:21,328 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 13:34:21,330 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem10_label22.c [2020-09-25 13:34:21,431 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/de5aa6c14/2e1269b69f674cb092353074646ccf34/FLAG20e9fc6f7 [2020-09-25 13:34:22,077 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 13:34:22,078 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem10_label22.c [2020-09-25 13:34:22,101 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/de5aa6c14/2e1269b69f674cb092353074646ccf34/FLAG20e9fc6f7 [2020-09-25 13:34:22,318 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/de5aa6c14/2e1269b69f674cb092353074646ccf34 [2020-09-25 13:34:22,333 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 13:34:22,339 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 13:34:22,342 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 13:34:22,342 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 13:34:22,346 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 13:34:22,348 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 01:34:22" (1/1) ... [2020-09-25 13:34:22,353 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@42dfe0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:34:22, skipping insertion in model container [2020-09-25 13:34:22,353 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 01:34:22" (1/1) ... [2020-09-25 13:34:22,364 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 13:34:22,429 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 13:34:22,923 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 13:34:22,930 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 13:34:23,205 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 13:34:23,224 INFO L208 MainTranslator]: Completed translation [2020-09-25 13:34:23,225 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:34:23 WrapperNode [2020-09-25 13:34:23,225 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 13:34:23,226 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 13:34:23,226 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 13:34:23,226 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 13:34:23,241 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:34:23" (1/1) ... [2020-09-25 13:34:23,242 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:34:23" (1/1) ... [2020-09-25 13:34:23,264 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:34:23" (1/1) ... [2020-09-25 13:34:23,264 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:34:23" (1/1) ... [2020-09-25 13:34:23,303 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:34:23" (1/1) ... [2020-09-25 13:34:23,321 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:34:23" (1/1) ... [2020-09-25 13:34:23,327 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:34:23" (1/1) ... [2020-09-25 13:34:23,336 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 13:34:23,337 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 13:34:23,337 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 13:34:23,337 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 13:34:23,339 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:34:23" (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 13:34:23,436 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 13:34:23,436 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 13:34:23,436 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-09-25 13:34:23,437 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 13:34:23,437 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-09-25 13:34:23,437 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 13:34:23,437 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-25 13:34:23,439 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-09-25 13:34:23,439 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 13:34:23,439 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 13:34:23,439 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 13:34:24,987 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 13:34:24,988 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-09-25 13:34:25,004 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 01:34:25 BoogieIcfgContainer [2020-09-25 13:34:25,004 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 13:34:25,009 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 13:34:25,010 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 13:34:25,013 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 13:34:25,014 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 01:34:22" (1/3) ... [2020-09-25 13:34:25,016 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3e40405c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 01:34:25, skipping insertion in model container [2020-09-25 13:34:25,016 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:34:23" (2/3) ... [2020-09-25 13:34:25,016 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3e40405c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 01:34:25, skipping insertion in model container [2020-09-25 13:34:25,017 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 01:34:25" (3/3) ... [2020-09-25 13:34:25,020 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem10_label22.c [2020-09-25 13:34:25,032 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 13:34:25,048 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-25 13:34:25,070 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-25 13:34:25,114 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 13:34:25,115 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 13:34:25,117 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 13:34:25,117 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 13:34:25,117 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 13:34:25,117 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 13:34:25,117 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 13:34:25,117 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 13:34:25,148 INFO L276 IsEmpty]: Start isEmpty. Operand 456 states. [2020-09-25 13:34:25,158 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2020-09-25 13:34:25,159 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 13:34:25,160 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] [2020-09-25 13:34:25,161 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 13:34:25,168 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 13:34:25,169 INFO L82 PathProgramCache]: Analyzing trace with hash 382162911, now seen corresponding path program 1 times [2020-09-25 13:34:25,180 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 13:34:25,181 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1001699951] [2020-09-25 13:34:25,181 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 13:34:25,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:34:25,415 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:34:25,709 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:34:26,073 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:34:26,074 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 65 [2020-09-25 13:34:26,074 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 13:34:26,074 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 710 [2020-09-25 13:34:26,078 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:34:26,079 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:34:26,079 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 13:34:26,079 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-09-25 13:34:26,080 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 52 [2020-09-25 13:34:26,080 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 5 [2020-09-25 13:34:26,203 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 13:34:26,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:34:26,214 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:34:26,232 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:34:26,233 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 13:34:26,233 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:34:26,259 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-09-25 13:34:26,259 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:34:26,260 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:34:26,260 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 13:34:26,260 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:34:26,260 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 13:34:26,261 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:34:26,283 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 13:34:26,284 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1001699951] [2020-09-25 13:34:26,286 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 13:34:26,286 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-25 13:34:26,287 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [553974533] [2020-09-25 13:34:26,294 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-25 13:34:26,295 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 13:34:26,313 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-25 13:34:26,315 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-25 13:34:26,318 INFO L87 Difference]: Start difference. First operand 456 states. Second operand 4 states. [2020-09-25 13:34:28,290 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 13:34:28,290 INFO L93 Difference]: Finished difference Result 1069 states and 1495 transitions. [2020-09-25 13:34:28,292 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-25 13:34:28,294 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 56 [2020-09-25 13:34:28,294 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 13:34:28,316 INFO L225 Difference]: With dead ends: 1069 [2020-09-25 13:34:28,316 INFO L226 Difference]: Without dead ends: 555 [2020-09-25 13:34:28,338 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 13:34:28,360 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 555 states. [2020-09-25 13:34:28,452 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 555 to 543. [2020-09-25 13:34:28,454 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 543 states. [2020-09-25 13:34:28,458 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 543 states to 543 states and 670 transitions. [2020-09-25 13:34:28,460 INFO L78 Accepts]: Start accepts. Automaton has 543 states and 670 transitions. Word has length 56 [2020-09-25 13:34:28,461 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 13:34:28,461 INFO L479 AbstractCegarLoop]: Abstraction has 543 states and 670 transitions. [2020-09-25 13:34:28,461 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-25 13:34:28,461 INFO L276 IsEmpty]: Start isEmpty. Operand 543 states and 670 transitions. [2020-09-25 13:34:28,468 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 137 [2020-09-25 13:34:28,469 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 13:34:28,469 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 13:34:28,470 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 13:34:28,470 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 13:34:28,470 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 13:34:28,470 INFO L82 PathProgramCache]: Analyzing trace with hash -701735608, now seen corresponding path program 1 times [2020-09-25 13:34:28,471 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 13:34:28,471 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [842791899] [2020-09-25 13:34:28,471 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 13:34:28,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:34:28,577 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:34:28,667 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:34:29,132 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:34:29,259 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:34:30,641 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:34:30,771 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:34:30,771 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 147 [2020-09-25 13:34:30,772 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-09-25 13:34:30,772 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2230 [2020-09-25 13:34:30,773 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:34:30,774 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:34:30,774 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 13:34:30,774 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-09-25 13:34:30,775 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 84 [2020-09-25 13:34:30,775 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:34:30,885 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 13:34:30,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:34:30,895 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:34:30,916 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:34:30,917 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 13:34:30,917 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:34:30,918 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 25 [2020-09-25 13:34:30,918 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:34:30,919 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:34:30,919 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 13:34:30,920 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:34:30,921 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-25 13:34:30,921 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 13:34:30,941 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 13:34:30,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:34:30,995 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:34:31,153 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:34:31,154 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-09-25 13:34:31,155 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:34:31,163 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 177 [2020-09-25 13:34:31,164 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:34:31,164 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:34:31,164 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 13:34:31,165 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 13:34:31,166 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 75 [2020-09-25 13:34:31,166 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:34:31,302 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 40 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 13:34:31,303 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [842791899] [2020-09-25 13:34:31,303 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 13:34:31,304 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-09-25 13:34:31,304 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [462498552] [2020-09-25 13:34:31,308 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-25 13:34:31,309 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 13:34:31,309 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-25 13:34:31,309 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-09-25 13:34:31,310 INFO L87 Difference]: Start difference. First operand 543 states and 670 transitions. Second operand 7 states. [2020-09-25 13:34:33,639 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 13:34:33,639 INFO L93 Difference]: Finished difference Result 1439 states and 1858 transitions. [2020-09-25 13:34:33,640 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-09-25 13:34:33,640 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 136 [2020-09-25 13:34:33,641 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 13:34:33,647 INFO L225 Difference]: With dead ends: 1439 [2020-09-25 13:34:33,647 INFO L226 Difference]: Without dead ends: 911 [2020-09-25 13:34:33,651 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 13:34:33,653 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 911 states. [2020-09-25 13:34:33,719 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 911 to 859. [2020-09-25 13:34:33,719 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 859 states. [2020-09-25 13:34:33,725 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 859 states to 859 states and 1032 transitions. [2020-09-25 13:34:33,726 INFO L78 Accepts]: Start accepts. Automaton has 859 states and 1032 transitions. Word has length 136 [2020-09-25 13:34:33,729 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 13:34:33,729 INFO L479 AbstractCegarLoop]: Abstraction has 859 states and 1032 transitions. [2020-09-25 13:34:33,729 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-25 13:34:33,729 INFO L276 IsEmpty]: Start isEmpty. Operand 859 states and 1032 transitions. [2020-09-25 13:34:33,739 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2020-09-25 13:34:33,739 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 13:34:33,739 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 13:34:33,740 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-25 13:34:33,740 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 13:34:33,741 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 13:34:33,741 INFO L82 PathProgramCache]: Analyzing trace with hash -1690817075, now seen corresponding path program 1 times [2020-09-25 13:34:33,741 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 13:34:33,741 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1523558139] [2020-09-25 13:34:33,741 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 13:34:33,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:34:33,832 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:34:33,902 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:34:34,471 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:34:34,561 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:34:34,933 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:34:36,986 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:34:36,987 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 156 [2020-09-25 13:34:36,988 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-09-25 13:34:36,988 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3191 [2020-09-25 13:34:36,988 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:34:36,989 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:34:36,989 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-09-25 13:34:36,989 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-25 13:34:36,990 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 128 [2020-09-25 13:34:36,990 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:34:37,140 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 13:34:37,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:34:37,152 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:34:37,180 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:34:37,181 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 13:34:37,181 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:34:37,182 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 31 [2020-09-25 13:34:37,182 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:34:37,182 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:34:37,183 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 13:34:37,183 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:34:37,183 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-09-25 13:34:37,184 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:34:37,225 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 13:34:37,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:34:37,259 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:34:37,520 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:34:37,521 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 85 [2020-09-25 13:34:37,521 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:34:37,521 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 276 [2020-09-25 13:34:37,521 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:34:37,522 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:34:37,522 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-25 13:34:37,522 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 13:34:37,522 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 84 [2020-09-25 13:34:37,523 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:34:37,765 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 16 proven. 24 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 13:34:37,766 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1523558139] [2020-09-25 13:34:37,766 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 13:34:37,766 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-09-25 13:34:37,767 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [994393927] [2020-09-25 13:34:37,768 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-09-25 13:34:37,769 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 13:34:37,769 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-09-25 13:34:37,770 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=96, Unknown=0, NotChecked=0, Total=132 [2020-09-25 13:34:37,770 INFO L87 Difference]: Start difference. First operand 859 states and 1032 transitions. Second operand 12 states. [2020-09-25 13:34:40,799 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 13:34:40,799 INFO L93 Difference]: Finished difference Result 1945 states and 2368 transitions. [2020-09-25 13:34:40,800 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-09-25 13:34:40,800 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 145 [2020-09-25 13:34:40,801 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 13:34:40,808 INFO L225 Difference]: With dead ends: 1945 [2020-09-25 13:34:40,808 INFO L226 Difference]: Without dead ends: 1073 [2020-09-25 13:34:40,811 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 4 SyntacticMatches, 1 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=84, Invalid=222, Unknown=0, NotChecked=0, Total=306 [2020-09-25 13:34:40,812 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1073 states. [2020-09-25 13:34:40,876 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1073 to 1017. [2020-09-25 13:34:40,877 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1017 states. [2020-09-25 13:34:40,885 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1017 states to 1017 states and 1201 transitions. [2020-09-25 13:34:40,886 INFO L78 Accepts]: Start accepts. Automaton has 1017 states and 1201 transitions. Word has length 145 [2020-09-25 13:34:40,886 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 13:34:40,887 INFO L479 AbstractCegarLoop]: Abstraction has 1017 states and 1201 transitions. [2020-09-25 13:34:40,892 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-09-25 13:34:40,893 INFO L276 IsEmpty]: Start isEmpty. Operand 1017 states and 1201 transitions. [2020-09-25 13:34:40,906 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 216 [2020-09-25 13:34:40,906 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 13:34:40,907 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-09-25 13:34:40,907 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-25 13:34:40,907 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 13:34:40,907 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 13:34:40,908 INFO L82 PathProgramCache]: Analyzing trace with hash 227833048, now seen corresponding path program 1 times [2020-09-25 13:34:40,908 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 13:34:40,909 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2110871043] [2020-09-25 13:34:40,909 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 13:34:40,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:34:41,001 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:34:41,199 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:34:41,290 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:34:41,985 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:34:42,138 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:34:44,370 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:34:44,481 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:34:44,565 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:34:45,172 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:34:45,172 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 228 [2020-09-25 13:34:45,172 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-09-25 13:34:45,173 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4215 [2020-09-25 13:34:45,173 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:34:45,173 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:34:45,173 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 13:34:45,174 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 96 [2020-09-25 13:34:45,174 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 131 [2020-09-25 13:34:45,174 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:34:45,272 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 13:34:45,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:34:45,276 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:34:45,284 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:34:45,284 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 13:34:45,284 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:34:45,285 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-09-25 13:34:45,285 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:34:45,285 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:34:45,285 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 13:34:45,285 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:34:45,286 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 13:34:45,286 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:34:45,299 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 13:34:45,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:34:45,327 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:34:45,390 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:34:45,390 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 75 [2020-09-25 13:34:45,390 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:34:45,390 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 75 [2020-09-25 13:34:45,391 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:34:45,391 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:34:45,391 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 13:34:45,391 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:34:45,391 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 67 [2020-09-25 13:34:45,392 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:34:45,412 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2020-09-25 13:34:45,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:34:45,441 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:34:45,500 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:34:45,588 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:34:45,589 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-09-25 13:34:45,589 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 13:34:45,589 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 159 [2020-09-25 13:34:45,590 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:34:45,590 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:34:45,590 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 13:34:45,591 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 13:34:45,591 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 75 [2020-09-25 13:34:45,591 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:34:45,715 INFO L134 CoverageAnalysis]: Checked inductivity of 156 backedges. 109 proven. 36 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2020-09-25 13:34:45,716 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2110871043] [2020-09-25 13:34:45,717 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 13:34:45,717 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-09-25 13:34:45,717 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1700907932] [2020-09-25 13:34:45,720 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-25 13:34:45,720 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 13:34:45,721 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-25 13:34:45,722 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-09-25 13:34:45,722 INFO L87 Difference]: Start difference. First operand 1017 states and 1201 transitions. Second operand 6 states. [2020-09-25 13:34:47,835 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 13:34:47,835 INFO L93 Difference]: Finished difference Result 2199 states and 2749 transitions. [2020-09-25 13:34:47,840 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-09-25 13:34:47,840 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 215 [2020-09-25 13:34:47,841 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 13:34:47,849 INFO L225 Difference]: With dead ends: 2199 [2020-09-25 13:34:47,849 INFO L226 Difference]: Without dead ends: 1347 [2020-09-25 13:34:47,852 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-09-25 13:34:47,854 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1347 states. [2020-09-25 13:34:47,891 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1347 to 1181. [2020-09-25 13:34:47,892 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1181 states. [2020-09-25 13:34:47,899 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1181 states to 1181 states and 1413 transitions. [2020-09-25 13:34:47,900 INFO L78 Accepts]: Start accepts. Automaton has 1181 states and 1413 transitions. Word has length 215 [2020-09-25 13:34:47,901 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 13:34:47,901 INFO L479 AbstractCegarLoop]: Abstraction has 1181 states and 1413 transitions. [2020-09-25 13:34:47,902 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-09-25 13:34:47,902 INFO L276 IsEmpty]: Start isEmpty. Operand 1181 states and 1413 transitions. [2020-09-25 13:34:47,906 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 228 [2020-09-25 13:34:47,906 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 13:34:47,907 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-09-25 13:34:47,907 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-25 13:34:47,907 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 13:34:47,908 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 13:34:47,908 INFO L82 PathProgramCache]: Analyzing trace with hash -1867328357, now seen corresponding path program 1 times [2020-09-25 13:34:47,908 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 13:34:47,908 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1151173362] [2020-09-25 13:34:47,909 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 13:34:47,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:34:48,001 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:34:48,094 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:34:48,380 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:34:48,971 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:34:49,443 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:34:49,829 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:34:52,977 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:34:52,977 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 240 [2020-09-25 13:34:52,978 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-09-25 13:34:52,978 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5015 [2020-09-25 13:34:52,978 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:34:52,979 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:34:52,979 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-25 13:34:52,979 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 94 [2020-09-25 13:34:52,979 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 122 [2020-09-25 13:34:52,980 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:34:53,083 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 13:34:53,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:34:53,087 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:34:53,095 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:34:53,095 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 13:34:53,095 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:34:53,096 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-09-25 13:34:53,096 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:34:53,096 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:34:53,096 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 13:34:53,097 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:34:53,097 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 13:34:53,097 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:34:53,111 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 13:34:53,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:34:53,141 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:34:53,207 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:34:53,208 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 75 [2020-09-25 13:34:53,208 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:34:53,208 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 80 [2020-09-25 13:34:53,208 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:34:53,209 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:34:53,209 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 13:34:53,209 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:34:53,209 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 65 [2020-09-25 13:34:53,210 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:34:53,230 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2020-09-25 13:34:53,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:34:53,264 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:34:53,469 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:34:53,640 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:34:53,641 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 88 [2020-09-25 13:34:53,641 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 13:34:53,641 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 392 [2020-09-25 13:34:53,641 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:34:53,641 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:34:53,642 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 13:34:53,642 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:34:53,642 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 80 [2020-09-25 13:34:53,642 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:34:53,824 INFO L134 CoverageAnalysis]: Checked inductivity of 156 backedges. 90 proven. 2 refuted. 0 times theorem prover too weak. 64 trivial. 0 not checked. [2020-09-25 13:34:53,824 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1151173362] [2020-09-25 13:34:53,824 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 13:34:53,825 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-09-25 13:34:53,825 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1322927768] [2020-09-25 13:34:53,826 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-25 13:34:53,826 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 13:34:53,827 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-25 13:34:53,827 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2020-09-25 13:34:53,827 INFO L87 Difference]: Start difference. First operand 1181 states and 1413 transitions. Second operand 8 states. [2020-09-25 13:34:58,122 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 13:34:58,123 INFO L93 Difference]: Finished difference Result 2870 states and 3643 transitions. [2020-09-25 13:34:58,123 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-09-25 13:34:58,123 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 227 [2020-09-25 13:34:58,124 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 13:34:58,132 INFO L225 Difference]: With dead ends: 2870 [2020-09-25 13:34:58,133 INFO L226 Difference]: Without dead ends: 1828 [2020-09-25 13:34:58,137 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=52, Invalid=80, Unknown=0, NotChecked=0, Total=132 [2020-09-25 13:34:58,140 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1828 states. [2020-09-25 13:34:58,181 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1828 to 1793. [2020-09-25 13:34:58,181 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1793 states. [2020-09-25 13:34:58,187 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1793 states to 1793 states and 2137 transitions. [2020-09-25 13:34:58,188 INFO L78 Accepts]: Start accepts. Automaton has 1793 states and 2137 transitions. Word has length 227 [2020-09-25 13:34:58,188 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 13:34:58,189 INFO L479 AbstractCegarLoop]: Abstraction has 1793 states and 2137 transitions. [2020-09-25 13:34:58,189 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-09-25 13:34:58,189 INFO L276 IsEmpty]: Start isEmpty. Operand 1793 states and 2137 transitions. [2020-09-25 13:34:58,193 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 258 [2020-09-25 13:34:58,193 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 13:34:58,194 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-09-25 13:34:58,194 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-25 13:34:58,194 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 13:34:58,194 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 13:34:58,195 INFO L82 PathProgramCache]: Analyzing trace with hash -698588225, now seen corresponding path program 1 times [2020-09-25 13:34:58,195 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 13:34:58,195 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [428407776] [2020-09-25 13:34:58,195 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 13:34:58,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:34:58,291 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:34:58,585 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:34:58,836 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:34:59,613 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:35:01,616 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:35:01,617 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 270 [2020-09-25 13:35:01,617 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-25 13:35:01,617 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3371 [2020-09-25 13:35:01,617 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:35:01,618 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:35:01,618 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-25 13:35:01,618 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 94 [2020-09-25 13:35:01,618 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 155 [2020-09-25 13:35:01,618 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:35:01,738 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 13:35:01,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:35:01,742 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:35:01,750 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:35:01,751 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 13:35:01,751 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:35:01,751 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-09-25 13:35:01,752 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:35:01,752 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:35:01,752 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 13:35:01,753 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:35:01,753 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 13:35:01,753 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:35:01,769 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 13:35:01,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:35:01,795 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:35:01,863 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:35:01,864 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 75 [2020-09-25 13:35:01,864 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:35:01,865 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 82 [2020-09-25 13:35:01,865 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:35:01,865 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:35:01,866 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 13:35:01,866 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:35:01,866 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 65 [2020-09-25 13:35:01,866 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:35:01,919 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2020-09-25 13:35:01,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:35:01,969 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:35:02,122 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:35:02,354 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:35:02,354 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 118 [2020-09-25 13:35:02,354 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 13:35:02,354 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 409 [2020-09-25 13:35:02,354 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:35:02,354 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:35:02,355 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 13:35:02,355 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:35:02,355 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 114 [2020-09-25 13:35:02,355 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 13:35:02,535 INFO L134 CoverageAnalysis]: Checked inductivity of 156 backedges. 88 proven. 4 refuted. 0 times theorem prover too weak. 64 trivial. 0 not checked. [2020-09-25 13:35:02,536 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [428407776] [2020-09-25 13:35:02,536 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 13:35:02,536 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-09-25 13:35:02,537 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [408646137] [2020-09-25 13:35:02,537 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-09-25 13:35:02,538 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 13:35:02,538 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-09-25 13:35:02,538 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2020-09-25 13:35:02,538 INFO L87 Difference]: Start difference. First operand 1793 states and 2137 transitions. Second operand 9 states. [2020-09-25 13:35:06,751 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 13:35:06,751 INFO L93 Difference]: Finished difference Result 4082 states and 5039 transitions. [2020-09-25 13:35:06,752 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-09-25 13:35:06,752 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 257 [2020-09-25 13:35:06,753 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 13:35:06,764 INFO L225 Difference]: With dead ends: 4082 [2020-09-25 13:35:06,764 INFO L226 Difference]: Without dead ends: 2425 [2020-09-25 13:35:06,771 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=73, Invalid=137, Unknown=0, NotChecked=0, Total=210 [2020-09-25 13:35:06,774 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2425 states. [2020-09-25 13:35:06,825 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2425 to 2400. [2020-09-25 13:35:06,826 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2400 states. [2020-09-25 13:35:06,834 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2400 states to 2400 states and 2858 transitions. [2020-09-25 13:35:06,834 INFO L78 Accepts]: Start accepts. Automaton has 2400 states and 2858 transitions. Word has length 257 [2020-09-25 13:35:06,834 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 13:35:06,835 INFO L479 AbstractCegarLoop]: Abstraction has 2400 states and 2858 transitions. [2020-09-25 13:35:06,835 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-09-25 13:35:06,835 INFO L276 IsEmpty]: Start isEmpty. Operand 2400 states and 2858 transitions. [2020-09-25 13:35:06,840 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 261 [2020-09-25 13:35:06,840 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 13:35:06,841 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 13:35:06,841 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-09-25 13:35:06,841 INFO L427 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 13:35:06,841 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 13:35:06,842 INFO L82 PathProgramCache]: Analyzing trace with hash 132214309, now seen corresponding path program 1 times [2020-09-25 13:35:06,842 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 13:35:06,842 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [763146461] [2020-09-25 13:35:06,842 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 13:35:06,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:35:06,937 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:35:07,058 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:35:07,306 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:35:08,375 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:35:08,375 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 273 [2020-09-25 13:35:08,376 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-25 13:35:08,376 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1480 [2020-09-25 13:35:08,376 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:35:08,377 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:35:08,377 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 13:35:08,377 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 141 [2020-09-25 13:35:08,377 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 131 [2020-09-25 13:35:08,377 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:35:08,478 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 13:35:08,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:35:08,483 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:35:08,492 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:35:08,492 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 13:35:08,493 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:35:08,493 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-09-25 13:35:08,494 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:35:08,494 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:35:08,494 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 13:35:08,495 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:35:08,495 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 13:35:08,495 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:35:08,512 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 13:35:08,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:35:08,570 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:35:08,655 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:35:08,655 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 120 [2020-09-25 13:35:08,656 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:35:08,656 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 115 [2020-09-25 13:35:08,656 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:35:08,657 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:35:08,657 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 13:35:08,657 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:35:08,658 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 112 [2020-09-25 13:35:08,658 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:35:08,707 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 145 [2020-09-25 13:35:08,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:35:08,732 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:35:08,787 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:35:08,837 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:35:08,837 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-09-25 13:35:08,837 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 13:35:08,838 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 117 [2020-09-25 13:35:08,838 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:35:08,838 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:35:08,838 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 13:35:08,839 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:35:08,839 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 67 [2020-09-25 13:35:08,839 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 13:35:08,914 INFO L134 CoverageAnalysis]: Checked inductivity of 158 backedges. 78 proven. 2 refuted. 0 times theorem prover too weak. 78 trivial. 0 not checked. [2020-09-25 13:35:08,914 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [763146461] [2020-09-25 13:35:08,915 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 13:35:08,915 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-09-25 13:35:08,916 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2002976442] [2020-09-25 13:35:08,917 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 13:35:08,917 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 13:35:08,918 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 13:35:08,918 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-25 13:35:08,918 INFO L87 Difference]: Start difference. First operand 2400 states and 2858 transitions. Second operand 5 states.