/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=0.5 --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/Problem01_label56.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-25 14:37:56,068 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 14:37:56,073 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 14:37:56,119 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 14:37:56,120 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 14:37:56,131 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 14:37:56,134 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 14:37:56,138 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 14:37:56,141 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 14:37:56,144 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 14:37:56,145 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 14:37:56,146 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 14:37:56,147 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 14:37:56,150 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 14:37:56,153 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 14:37:56,154 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 14:37:56,156 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 14:37:56,157 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 14:37:56,159 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 14:37:56,166 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 14:37:56,167 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 14:37:56,170 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 14:37:56,171 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 14:37:56,172 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 14:37:56,177 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 14:37:56,178 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 14:37:56,178 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 14:37:56,180 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 14:37:56,181 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 14:37:56,182 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 14:37:56,182 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 14:37:56,186 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 14:37:56,187 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 14:37:56,188 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 14:37:56,189 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 14:37:56,189 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 14:37:56,190 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 14:37:56,190 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 14:37:56,191 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 14:37:56,192 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 14:37:56,192 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 14:37:56,193 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 14:37:56,221 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 14:37:56,221 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 14:37:56,222 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 14:37:56,223 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 14:37:56,223 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 14:37:56,223 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 14:37:56,223 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 14:37:56,223 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 14:37:56,224 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 14:37:56,224 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 14:37:56,224 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 14:37:56,224 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 14:37:56,224 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 14:37:56,225 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 14:37:56,225 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 14:37:56,225 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 14:37:56,225 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 14:37:56,225 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 14:37:56,226 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 14:37:56,226 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 14:37:56,226 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 14:37:56,226 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 14:37:56,226 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 14:37:56,227 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 14:37:56,227 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 14:37:56,227 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 14:37:56,227 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 14:37:56,227 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 14:37:56,227 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 14:37:56,228 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=0.5;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=0.5;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=0.5;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=0.5;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=0.5;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=0.5;log-additional-information=true; [2020-09-25 14:37:56,716 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 14:37:56,734 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 14:37:56,739 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 14:37:56,741 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 14:37:56,742 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 14:37:56,743 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem01_label56.c [2020-09-25 14:37:56,837 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/ad62a762e/e228ebb327ea487d9b326efc7cb49b96/FLAGa2fd5d43a [2020-09-25 14:37:57,500 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 14:37:57,501 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem01_label56.c [2020-09-25 14:37:57,517 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/ad62a762e/e228ebb327ea487d9b326efc7cb49b96/FLAGa2fd5d43a [2020-09-25 14:37:57,729 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/ad62a762e/e228ebb327ea487d9b326efc7cb49b96 [2020-09-25 14:37:57,744 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 14:37:57,749 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 14:37:57,750 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 14:37:57,750 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 14:37:57,754 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 14:37:57,756 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 02:37:57" (1/1) ... [2020-09-25 14:37:57,760 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1f78b0b2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:37:57, skipping insertion in model container [2020-09-25 14:37:57,760 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 02:37:57" (1/1) ... [2020-09-25 14:37:57,770 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 14:37:57,829 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 14:37:58,298 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 14:37:58,309 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 14:37:58,570 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 14:37:58,599 INFO L208 MainTranslator]: Completed translation [2020-09-25 14:37:58,600 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:37:58 WrapperNode [2020-09-25 14:37:58,600 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 14:37:58,601 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 14:37:58,601 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 14:37:58,601 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 14:37:58,620 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:37:58" (1/1) ... [2020-09-25 14:37:58,621 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:37:58" (1/1) ... [2020-09-25 14:37:58,661 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:37:58" (1/1) ... [2020-09-25 14:37:58,662 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:37:58" (1/1) ... [2020-09-25 14:37:58,711 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:37:58" (1/1) ... [2020-09-25 14:37:58,727 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:37:58" (1/1) ... [2020-09-25 14:37:58,732 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:37:58" (1/1) ... [2020-09-25 14:37:58,740 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 14:37:58,741 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 14:37:58,741 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 14:37:58,741 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 14:37:58,742 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:37:58" (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 14:37:58,837 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 14:37:58,838 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 14:37:58,838 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-09-25 14:37:58,838 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 14:37:58,839 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-09-25 14:37:58,839 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 14:37:58,839 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-25 14:37:58,839 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-09-25 14:37:58,839 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 14:37:58,840 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 14:37:58,840 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 14:38:00,213 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 14:38:00,213 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-09-25 14:38:00,223 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 02:38:00 BoogieIcfgContainer [2020-09-25 14:38:00,223 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 14:38:00,225 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 14:38:00,225 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 14:38:00,229 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 14:38:00,229 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 02:37:57" (1/3) ... [2020-09-25 14:38:00,231 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5d6b3b80 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 02:38:00, skipping insertion in model container [2020-09-25 14:38:00,231 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:37:58" (2/3) ... [2020-09-25 14:38:00,231 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5d6b3b80 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 02:38:00, skipping insertion in model container [2020-09-25 14:38:00,232 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 02:38:00" (3/3) ... [2020-09-25 14:38:00,234 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem01_label56.c [2020-09-25 14:38:00,247 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 14:38:00,259 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-25 14:38:00,284 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-25 14:38:00,324 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 14:38:00,324 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 14:38:00,324 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 14:38:00,325 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 14:38:00,325 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 14:38:00,325 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 14:38:00,325 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 14:38:00,325 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 14:38:00,359 INFO L276 IsEmpty]: Start isEmpty. Operand 525 states. [2020-09-25 14:38:00,378 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2020-09-25 14:38:00,378 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 14:38:00,380 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 14:38:00,380 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 14:38:00,389 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 14:38:00,389 INFO L82 PathProgramCache]: Analyzing trace with hash 602782831, now seen corresponding path program 1 times [2020-09-25 14:38:00,402 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 14:38:00,402 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [424349087] [2020-09-25 14:38:00,403 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 14:38:00,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:38:00,866 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:38:01,175 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:38:01,890 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:38:03,454 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:38:03,528 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:38:04,067 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:38:05,177 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:38:05,748 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:38:05,748 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 113 [2020-09-25 14:38:05,748 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-09-25 14:38:05,749 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5012 [2020-09-25 14:38:05,752 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:38:05,753 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:38:05,753 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 14:38:05,753 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 18 [2020-09-25 14:38:05,753 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 94 [2020-09-25 14:38:05,753 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-09-25 14:38:05,950 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 14:38:05,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:38:05,962 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:38:05,987 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:38:05,988 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-25 14:38:05,988 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:38:05,988 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 29 [2020-09-25 14:38:05,988 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:38:05,989 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:38:05,989 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 14:38:05,989 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:38:05,989 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-09-25 14:38:05,990 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:38:06,077 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 14:38:06,078 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [424349087] [2020-09-25 14:38:06,080 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 14:38:06,081 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-25 14:38:06,082 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1870060728] [2020-09-25 14:38:06,090 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-25 14:38:06,090 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 14:38:06,107 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-25 14:38:06,108 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-25 14:38:06,111 INFO L87 Difference]: Start difference. First operand 525 states. Second operand 4 states. [2020-09-25 14:38:08,146 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 14:38:08,147 INFO L93 Difference]: Finished difference Result 1268 states and 1667 transitions. [2020-09-25 14:38:08,148 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-25 14:38:08,150 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 104 [2020-09-25 14:38:08,151 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 14:38:08,178 INFO L225 Difference]: With dead ends: 1268 [2020-09-25 14:38:08,178 INFO L226 Difference]: Without dead ends: 694 [2020-09-25 14:38:08,190 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-09-25 14:38:08,214 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 694 states. [2020-09-25 14:38:08,288 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 694 to 603. [2020-09-25 14:38:08,289 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 603 states. [2020-09-25 14:38:08,293 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 603 states to 603 states and 719 transitions. [2020-09-25 14:38:08,300 INFO L78 Accepts]: Start accepts. Automaton has 603 states and 719 transitions. Word has length 104 [2020-09-25 14:38:08,301 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 14:38:08,301 INFO L479 AbstractCegarLoop]: Abstraction has 603 states and 719 transitions. [2020-09-25 14:38:08,301 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-25 14:38:08,301 INFO L276 IsEmpty]: Start isEmpty. Operand 603 states and 719 transitions. [2020-09-25 14:38:08,312 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2020-09-25 14:38:08,312 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 14:38:08,313 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-09-25 14:38:08,313 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 14:38:08,313 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 14:38:08,314 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 14:38:08,314 INFO L82 PathProgramCache]: Analyzing trace with hash -435684201, now seen corresponding path program 1 times [2020-09-25 14:38:08,315 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 14:38:08,315 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1257673034] [2020-09-25 14:38:08,315 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 14:38:08,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:38:08,370 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:38:08,485 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:38:08,840 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:38:09,622 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:38:12,292 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:38:12,438 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:38:13,086 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:38:13,353 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:38:13,353 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 136 [2020-09-25 14:38:13,353 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-09-25 14:38:13,354 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-09-25 14:38:13,354 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:38:13,354 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:38:13,354 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 14:38:13,355 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 46 [2020-09-25 14:38:13,355 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 89 [2020-09-25 14:38:13,355 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:38:13,464 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 14:38:13,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:38:13,470 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:38:13,482 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:38:13,482 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-25 14:38:13,482 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:38:13,482 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-09-25 14:38:13,483 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:38:13,483 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:38:13,483 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 14:38:13,483 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:38:13,484 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 14:38:13,484 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:38:13,506 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-09-25 14:38:13,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:38:13,515 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:38:13,534 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:38:13,534 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-09-25 14:38:13,534 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:38:13,534 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-09-25 14:38:13,535 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:38:13,535 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:38:13,535 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 14:38:13,535 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:38:13,536 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 14:38:13,536 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:38:13,561 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 13 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 14:38:13,562 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1257673034] [2020-09-25 14:38:13,562 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 14:38:13,562 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-09-25 14:38:13,563 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1019367500] [2020-09-25 14:38:13,565 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 14:38:13,565 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 14:38:13,565 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 14:38:13,566 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-25 14:38:13,566 INFO L87 Difference]: Start difference. First operand 603 states and 719 transitions. Second operand 5 states. [2020-09-25 14:38:15,933 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 14:38:15,933 INFO L93 Difference]: Finished difference Result 1561 states and 1929 transitions. [2020-09-25 14:38:15,937 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 14:38:15,937 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 125 [2020-09-25 14:38:15,938 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 14:38:15,944 INFO L225 Difference]: With dead ends: 1561 [2020-09-25 14:38:15,945 INFO L226 Difference]: Without dead ends: 982 [2020-09-25 14:38:15,948 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-09-25 14:38:15,950 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 982 states. [2020-09-25 14:38:15,982 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 982 to 748. [2020-09-25 14:38:15,982 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 748 states. [2020-09-25 14:38:15,986 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 748 states to 748 states and 905 transitions. [2020-09-25 14:38:15,987 INFO L78 Accepts]: Start accepts. Automaton has 748 states and 905 transitions. Word has length 125 [2020-09-25 14:38:15,988 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 14:38:15,988 INFO L479 AbstractCegarLoop]: Abstraction has 748 states and 905 transitions. [2020-09-25 14:38:15,988 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 14:38:15,988 INFO L276 IsEmpty]: Start isEmpty. Operand 748 states and 905 transitions. [2020-09-25 14:38:15,992 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2020-09-25 14:38:15,992 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 14:38:15,993 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 14:38:15,993 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-25 14:38:15,993 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 14:38:15,993 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 14:38:15,994 INFO L82 PathProgramCache]: Analyzing trace with hash 305762680, now seen corresponding path program 1 times [2020-09-25 14:38:15,994 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 14:38:15,994 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [544260665] [2020-09-25 14:38:15,994 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 14:38:16,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:38:16,066 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:38:16,125 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:38:16,204 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:38:16,361 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:38:16,472 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:38:16,512 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:38:16,906 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:38:16,952 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:38:21,034 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:38:21,035 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 145 [2020-09-25 14:38:21,035 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-09-25 14:38:21,035 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-09-25 14:38:21,036 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:38:21,036 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:38:21,036 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 14:38:21,036 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 52 [2020-09-25 14:38:21,036 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 92 [2020-09-25 14:38:21,037 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:38:21,156 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 14:38:21,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:38:21,163 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:38:21,176 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:38:21,176 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-25 14:38:21,176 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:38:21,177 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-09-25 14:38:21,177 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:38:21,177 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:38:21,178 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 14:38:21,178 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:38:21,178 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 14:38:21,178 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:38:21,202 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-09-25 14:38:21,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:38:21,211 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:38:21,242 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:38:21,242 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 26 [2020-09-25 14:38:21,243 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:38:21,243 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 34 [2020-09-25 14:38:21,243 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:38:21,243 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:38:21,243 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 14:38:21,244 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:38:21,244 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-09-25 14:38:21,244 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:38:21,321 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 17 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 14:38:21,322 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [544260665] [2020-09-25 14:38:21,322 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 14:38:21,323 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-09-25 14:38:21,323 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1803689195] [2020-09-25 14:38:21,324 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 14:38:21,324 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 14:38:21,324 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 14:38:21,324 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-25 14:38:21,325 INFO L87 Difference]: Start difference. First operand 748 states and 905 transitions. Second operand 5 states. [2020-09-25 14:38:23,208 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 14:38:23,208 INFO L93 Difference]: Finished difference Result 1957 states and 2468 transitions. [2020-09-25 14:38:23,210 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 14:38:23,210 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 134 [2020-09-25 14:38:23,211 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 14:38:23,219 INFO L225 Difference]: With dead ends: 1957 [2020-09-25 14:38:23,219 INFO L226 Difference]: Without dead ends: 1233 [2020-09-25 14:38:23,223 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 6 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-09-25 14:38:23,225 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1233 states. [2020-09-25 14:38:23,260 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1233 to 1177. [2020-09-25 14:38:23,260 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1177 states. [2020-09-25 14:38:23,267 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1177 states to 1177 states and 1466 transitions. [2020-09-25 14:38:23,267 INFO L78 Accepts]: Start accepts. Automaton has 1177 states and 1466 transitions. Word has length 134 [2020-09-25 14:38:23,268 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 14:38:23,268 INFO L479 AbstractCegarLoop]: Abstraction has 1177 states and 1466 transitions. [2020-09-25 14:38:23,268 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 14:38:23,268 INFO L276 IsEmpty]: Start isEmpty. Operand 1177 states and 1466 transitions. [2020-09-25 14:38:23,273 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 136 [2020-09-25 14:38:23,273 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 14:38:23,274 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 14:38:23,274 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-25 14:38:23,274 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 14:38:23,275 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 14:38:23,275 INFO L82 PathProgramCache]: Analyzing trace with hash 752263732, now seen corresponding path program 1 times [2020-09-25 14:38:23,275 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 14:38:23,276 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [620346270] [2020-09-25 14:38:23,276 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 14:38:23,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:38:23,315 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:38:23,500 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:38:23,536 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:38:23,866 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:38:23,980 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:38:24,025 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:38:26,661 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:38:27,031 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:38:28,314 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:38:28,428 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:38:28,429 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 146 [2020-09-25 14:38:28,429 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-09-25 14:38:28,429 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5130 [2020-09-25 14:38:28,430 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:38:28,431 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:38:28,431 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 14:38:28,431 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 55 [2020-09-25 14:38:28,432 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 90 [2020-09-25 14:38:28,432 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 14:38:28,565 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 14:38:28,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:38:28,571 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:38:28,581 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:38:28,582 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-25 14:38:28,582 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:38:28,582 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-09-25 14:38:28,582 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:38:28,583 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:38:28,583 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 14:38:28,583 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:38:28,583 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 14:38:28,583 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 14:38:28,603 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-09-25 14:38:28,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:38:28,616 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:38:28,649 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:38:28,649 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-25 14:38:28,650 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:38:28,650 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 39 [2020-09-25 14:38:28,650 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:38:28,651 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:38:28,651 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 14:38:28,651 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:38:28,652 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-09-25 14:38:28,652 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:38:28,704 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 20 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 14:38:28,706 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [620346270] [2020-09-25 14:38:28,707 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 14:38:28,707 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-09-25 14:38:28,707 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1764344624] [2020-09-25 14:38:28,708 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 14:38:28,708 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 14:38:28,708 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 14:38:28,709 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-25 14:38:28,710 INFO L87 Difference]: Start difference. First operand 1177 states and 1466 transitions. Second operand 5 states. [2020-09-25 14:38:30,676 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 14:38:30,676 INFO L93 Difference]: Finished difference Result 3066 states and 3960 transitions. [2020-09-25 14:38:30,677 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 14:38:30,677 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 135 [2020-09-25 14:38:30,677 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 14:38:30,689 INFO L225 Difference]: With dead ends: 3066 [2020-09-25 14:38:30,689 INFO L226 Difference]: Without dead ends: 1913 [2020-09-25 14:38:30,695 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-09-25 14:38:30,699 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1913 states. [2020-09-25 14:38:30,764 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1913 to 1749. [2020-09-25 14:38:30,764 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1749 states. [2020-09-25 14:38:30,773 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1749 states to 1749 states and 2198 transitions. [2020-09-25 14:38:30,774 INFO L78 Accepts]: Start accepts. Automaton has 1749 states and 2198 transitions. Word has length 135 [2020-09-25 14:38:30,774 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 14:38:30,774 INFO L479 AbstractCegarLoop]: Abstraction has 1749 states and 2198 transitions. [2020-09-25 14:38:30,774 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 14:38:30,774 INFO L276 IsEmpty]: Start isEmpty. Operand 1749 states and 2198 transitions. [2020-09-25 14:38:30,786 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 182 [2020-09-25 14:38:30,786 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 14:38:30,787 INFO L422 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 14:38:30,787 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-25 14:38:30,787 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 14:38:30,787 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 14:38:30,787 INFO L82 PathProgramCache]: Analyzing trace with hash -588171755, now seen corresponding path program 1 times [2020-09-25 14:38:30,788 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 14:38:30,788 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1343687421] [2020-09-25 14:38:30,788 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 14:38:30,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:38:30,853 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:38:30,977 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:38:31,068 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:38:32,526 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:38:32,526 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 194 [2020-09-25 14:38:32,526 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-25 14:38:32,526 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1700 [2020-09-25 14:38:32,527 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:38:32,527 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:38:32,527 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 14:38:32,527 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 47 [2020-09-25 14:38:32,528 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 53 [2020-09-25 14:38:32,528 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:38:32,603 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 14:38:32,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:38:32,608 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:38:32,618 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:38:32,619 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-25 14:38:32,619 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:38:32,619 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-09-25 14:38:32,619 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:38:32,619 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:38:32,620 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 14:38:32,620 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:38:32,620 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 14:38:32,620 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:38:32,641 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-09-25 14:38:32,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:38:32,649 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:38:32,666 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:38:32,667 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-09-25 14:38:32,667 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:38:32,667 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-09-25 14:38:32,667 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:38:32,668 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:38:32,668 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 14:38:32,668 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:38:32,668 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-25 14:38:32,668 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:38:32,674 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2020-09-25 14:38:32,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:38:32,696 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:38:32,809 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:38:32,809 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 52 [2020-09-25 14:38:32,809 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:38:32,810 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 123 [2020-09-25 14:38:32,810 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:38:32,810 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:38:32,811 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 14:38:32,811 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 14:38:32,811 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 51 [2020-09-25 14:38:32,812 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:38:32,891 INFO L134 CoverageAnalysis]: Checked inductivity of 73 backedges. 70 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-09-25 14:38:32,891 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1343687421] [2020-09-25 14:38:32,892 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 14:38:32,892 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-09-25 14:38:32,892 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1525674360] [2020-09-25 14:38:32,893 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-25 14:38:32,893 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 14:38:32,893 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-25 14:38:32,893 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-09-25 14:38:32,893 INFO L87 Difference]: Start difference. First operand 1749 states and 2198 transitions. Second operand 7 states. [2020-09-25 14:38:35,537 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 14:38:35,538 INFO L93 Difference]: Finished difference Result 4480 states and 5823 transitions. [2020-09-25 14:38:35,543 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-09-25 14:38:35,543 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 181 [2020-09-25 14:38:35,544 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 14:38:35,559 INFO L225 Difference]: With dead ends: 4480 [2020-09-25 14:38:35,559 INFO L226 Difference]: Without dead ends: 2755 [2020-09-25 14:38:35,567 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-09-25 14:38:35,571 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2755 states. [2020-09-25 14:38:35,658 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2755 to 2571. [2020-09-25 14:38:35,658 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2571 states. [2020-09-25 14:38:35,670 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2571 states to 2571 states and 3229 transitions. [2020-09-25 14:38:35,671 INFO L78 Accepts]: Start accepts. Automaton has 2571 states and 3229 transitions. Word has length 181 [2020-09-25 14:38:35,671 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 14:38:35,671 INFO L479 AbstractCegarLoop]: Abstraction has 2571 states and 3229 transitions. [2020-09-25 14:38:35,671 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-25 14:38:35,672 INFO L276 IsEmpty]: Start isEmpty. Operand 2571 states and 3229 transitions. [2020-09-25 14:38:35,684 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 183 [2020-09-25 14:38:35,684 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 14:38:35,684 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 14:38:35,684 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-25 14:38:35,685 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 14:38:35,685 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 14:38:35,685 INFO L82 PathProgramCache]: Analyzing trace with hash -1738067261, now seen corresponding path program 1 times [2020-09-25 14:38:35,685 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 14:38:35,686 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2092659498] [2020-09-25 14:38:35,686 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 14:38:35,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:38:35,749 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:38:35,863 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:38:36,036 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:38:36,096 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:38:38,783 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:38:39,595 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:38:40,360 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:38:40,541 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:38:40,735 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:38:40,736 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 195 [2020-09-25 14:38:40,736 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-09-25 14:38:40,736 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5018 [2020-09-25 14:38:40,736 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:38:40,736 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:38:40,736 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 14:38:40,736 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 101 [2020-09-25 14:38:40,737 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 93 [2020-09-25 14:38:40,737 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 14:38:40,831 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 14:38:40,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:38:40,837 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:38:40,847 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:38:40,847 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-25 14:38:40,847 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:38:40,848 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-09-25 14:38:40,848 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:38:40,848 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:38:40,848 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 14:38:40,848 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:38:40,848 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 14:38:40,849 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 14:38:40,873 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-09-25 14:38:40,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:38:40,877 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:38:40,885 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:38:40,885 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-09-25 14:38:40,885 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:38:40,885 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-09-25 14:38:40,886 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:38:40,886 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:38:40,886 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 14:38:40,886 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:38:40,886 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 14:38:40,886 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 14:38:40,889 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2020-09-25 14:38:40,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:38:40,910 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:38:40,954 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:38:40,954 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 53 [2020-09-25 14:38:40,954 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:38:40,955 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 53 [2020-09-25 14:38:40,955 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:38:40,955 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:38:40,955 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 14:38:40,955 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:38:40,955 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 40 [2020-09-25 14:38:40,955 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 14:38:41,001 INFO L134 CoverageAnalysis]: Checked inductivity of 75 backedges. 61 proven. 2 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2020-09-25 14:38:41,002 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2092659498] [2020-09-25 14:38:41,002 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 14:38:41,002 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-09-25 14:38:41,002 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1335499472] [2020-09-25 14:38:41,003 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 14:38:41,003 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 14:38:41,003 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 14:38:41,004 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-25 14:38:41,004 INFO L87 Difference]: Start difference. First operand 2571 states and 3229 transitions. Second operand 5 states. [2020-09-25 14:38:43,165 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 14:38:43,165 INFO L93 Difference]: Finished difference Result 6150 states and 7897 transitions. [2020-09-25 14:38:43,166 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 14:38:43,166 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 182 [2020-09-25 14:38:43,167 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 14:38:43,186 INFO L225 Difference]: With dead ends: 6150 [2020-09-25 14:38:43,186 INFO L226 Difference]: Without dead ends: 3603 [2020-09-25 14:38:43,197 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-09-25 14:38:43,201 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3603 states. [2020-09-25 14:38:43,275 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3603 to 2994. [2020-09-25 14:38:43,276 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2994 states. [2020-09-25 14:38:43,282 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2994 states to 2994 states and 3625 transitions. [2020-09-25 14:38:43,283 INFO L78 Accepts]: Start accepts. Automaton has 2994 states and 3625 transitions. Word has length 182 [2020-09-25 14:38:43,283 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 14:38:43,283 INFO L479 AbstractCegarLoop]: Abstraction has 2994 states and 3625 transitions. [2020-09-25 14:38:43,283 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 14:38:43,284 INFO L276 IsEmpty]: Start isEmpty. Operand 2994 states and 3625 transitions. [2020-09-25 14:38:43,295 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 189 [2020-09-25 14:38:43,295 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 14:38:43,296 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 14:38:43,296 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-09-25 14:38:43,296 INFO L427 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 14:38:43,296 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 14:38:43,297 INFO L82 PathProgramCache]: Analyzing trace with hash -1707194346, now seen corresponding path program 1 times [2020-09-25 14:38:43,297 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 14:38:43,297 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [939461239] [2020-09-25 14:38:43,297 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 14:38:43,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:38:43,377 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:38:43,583 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:38:43,636 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:38:43,739 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:38:43,790 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:38:43,942 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:38:44,197 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:38:47,574 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:38:47,575 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 201 [2020-09-25 14:38:47,575 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-09-25 14:38:47,575 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4235 [2020-09-25 14:38:47,575 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:38:47,575 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:38:47,576 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 14:38:47,576 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 23 [2020-09-25 14:38:47,576 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-09-25 14:38:47,576 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:38:47,646 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 14:38:47,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:38:47,654 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:38:47,668 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:38:47,668 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-25 14:38:47,668 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:38:47,668 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-09-25 14:38:47,669 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:38:47,669 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:38:47,669 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 14:38:47,669 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:38:47,669 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 19 [2020-09-25 14:38:47,669 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 14:38:47,699 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-09-25 14:38:47,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:38:47,709 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:38:47,749 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:38:47,749 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 24 [2020-09-25 14:38:47,749 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:38:47,749 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 43 [2020-09-25 14:38:47,750 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:38:47,750 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:38:47,750 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 14:38:47,750 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 14:38:47,750 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-09-25 14:38:47,750 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 14:38:47,799 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2020-09-25 14:38:47,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:38:47,819 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:38:47,849 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:38:47,849 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 52 [2020-09-25 14:38:47,850 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:38:47,850 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 39 [2020-09-25 14:38:47,850 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:38:47,850 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:38:47,851 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 14:38:47,851 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 49 [2020-09-25 14:38:47,851 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 14:38:47,851 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:38:47,895 INFO L134 CoverageAnalysis]: Checked inductivity of 81 backedges. 60 proven. 10 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2020-09-25 14:38:47,895 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [939461239] [2020-09-25 14:38:47,895 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 14:38:47,895 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-09-25 14:38:47,896 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [193285201] [2020-09-25 14:38:47,896 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-25 14:38:47,896 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 14:38:47,897 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-25 14:38:47,897 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-09-25 14:38:47,897 INFO L87 Difference]: Start difference. First operand 2994 states and 3625 transitions. Second operand 7 states.