/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_label21.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-25 13:34:20,061 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 13:34:20,065 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 13:34:20,092 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 13:34:20,092 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 13:34:20,093 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 13:34:20,095 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 13:34:20,096 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 13:34:20,098 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 13:34:20,099 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 13:34:20,100 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 13:34:20,101 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 13:34:20,101 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 13:34:20,102 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 13:34:20,106 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 13:34:20,109 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 13:34:20,110 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 13:34:20,114 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 13:34:20,116 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 13:34:20,119 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 13:34:20,123 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 13:34:20,127 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 13:34:20,128 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 13:34:20,129 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 13:34:20,133 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 13:34:20,134 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 13:34:20,134 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 13:34:20,138 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 13:34:20,139 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 13:34:20,142 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 13:34:20,142 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 13:34:20,143 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 13:34:20,144 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 13:34:20,146 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 13:34:20,147 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 13:34:20,148 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 13:34:20,149 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 13:34:20,149 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 13:34:20,149 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 13:34:20,150 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 13:34:20,152 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 13:34:20,153 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 13:34:20,212 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 13:34:20,212 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 13:34:20,217 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 13:34:20,217 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 13:34:20,218 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 13:34:20,218 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 13:34:20,218 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 13:34:20,218 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 13:34:20,218 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 13:34:20,219 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 13:34:20,222 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 13:34:20,222 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 13:34:20,222 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 13:34:20,223 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 13:34:20,223 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 13:34:20,223 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 13:34:20,223 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 13:34:20,223 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 13:34:20,224 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 13:34:20,227 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 13:34:20,227 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 13:34:20,228 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 13:34:20,228 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 13:34:20,228 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 13:34:20,228 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 13:34:20,228 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 13:34:20,229 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 13:34:20,229 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 13:34:20,229 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 13:34:20,229 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 13:34:20,708 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 13:34:20,728 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 13:34:20,733 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 13:34:20,734 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 13:34:20,735 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 13:34:20,736 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem10_label21.c [2020-09-25 13:34:20,833 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/35934fd9c/4895c5bc6b654ddbb53619d873d1e68a/FLAGebb0d909d [2020-09-25 13:34:21,508 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 13:34:21,512 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem10_label21.c [2020-09-25 13:34:21,529 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/35934fd9c/4895c5bc6b654ddbb53619d873d1e68a/FLAGebb0d909d [2020-09-25 13:34:21,732 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/35934fd9c/4895c5bc6b654ddbb53619d873d1e68a [2020-09-25 13:34:21,748 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 13:34:21,755 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 13:34:21,759 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 13:34:21,760 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 13:34:21,764 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 13:34:21,765 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 01:34:21" (1/1) ... [2020-09-25 13:34:21,770 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5cb7919e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:34:21, skipping insertion in model container [2020-09-25 13:34:21,771 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 01:34:21" (1/1) ... [2020-09-25 13:34:21,782 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 13:34:21,853 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 13:34:22,385 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 13:34:22,392 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 13:34:22,632 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 13:34:22,652 INFO L208 MainTranslator]: Completed translation [2020-09-25 13:34:22,653 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:34:22 WrapperNode [2020-09-25 13:34:22,653 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 13:34:22,654 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 13:34:22,654 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 13:34:22,654 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 13:34:22,673 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:34:22" (1/1) ... [2020-09-25 13:34:22,673 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:34:22" (1/1) ... [2020-09-25 13:34:22,696 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:34:22" (1/1) ... [2020-09-25 13:34:22,696 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:34:22" (1/1) ... [2020-09-25 13:34:22,755 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:34:22" (1/1) ... [2020-09-25 13:34:22,767 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:34:22" (1/1) ... [2020-09-25 13:34:22,775 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:34:22" (1/1) ... [2020-09-25 13:34:22,783 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 13:34:22,784 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 13:34:22,784 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 13:34:22,784 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 13:34:22,786 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:34:22" (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 13:34:22,883 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 13:34:22,883 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 13:34:22,883 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-09-25 13:34:22,884 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 13:34:22,884 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-09-25 13:34:22,884 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 13:34:22,884 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-25 13:34:22,884 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-09-25 13:34:22,885 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 13:34:22,885 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 13:34:22,885 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 13:34:24,430 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 13:34:24,430 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-09-25 13:34:24,439 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 01:34:24 BoogieIcfgContainer [2020-09-25 13:34:24,439 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 13:34:24,440 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 13:34:24,441 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 13:34:24,444 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 13:34:24,445 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 01:34:21" (1/3) ... [2020-09-25 13:34:24,446 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@600cbf66 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 01:34:24, skipping insertion in model container [2020-09-25 13:34:24,446 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:34:22" (2/3) ... [2020-09-25 13:34:24,447 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@600cbf66 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 01:34:24, skipping insertion in model container [2020-09-25 13:34:24,447 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 01:34:24" (3/3) ... [2020-09-25 13:34:24,449 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem10_label21.c [2020-09-25 13:34:24,461 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 13:34:24,473 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-25 13:34:24,497 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-25 13:34:24,534 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 13:34:24,534 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 13:34:24,534 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 13:34:24,535 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 13:34:24,535 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 13:34:24,535 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 13:34:24,535 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 13:34:24,535 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 13:34:24,570 INFO L276 IsEmpty]: Start isEmpty. Operand 456 states. [2020-09-25 13:34:24,580 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2020-09-25 13:34:24,581 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 13:34:24,582 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] [2020-09-25 13:34:24,583 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 13:34:24,592 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 13:34:24,592 INFO L82 PathProgramCache]: Analyzing trace with hash -1065442889, now seen corresponding path program 1 times [2020-09-25 13:34:24,606 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 13:34:24,607 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1079871953] [2020-09-25 13:34:24,607 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 13:34:24,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:34:24,850 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:34:25,026 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:34:25,743 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:34:25,744 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 55 [2020-09-25 13:34:25,744 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 13:34:25,744 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 936 [2020-09-25 13:34:25,748 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:34:25,749 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:34:25,749 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 13:34:25,749 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-25 13:34:25,750 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 43 [2020-09-25 13:34:25,750 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 5 [2020-09-25 13:34:25,886 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 13:34:25,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:34:25,900 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:34:25,920 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:34:25,921 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 13:34:25,921 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:34:25,921 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 24 [2020-09-25 13:34:25,922 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:34:25,922 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:34:25,922 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 13:34:25,922 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:34:25,923 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 13:34:25,923 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:34:25,950 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 13:34:25,951 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1079871953] [2020-09-25 13:34:25,953 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 13:34:25,954 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-25 13:34:25,955 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [654387391] [2020-09-25 13:34:25,963 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-25 13:34:25,963 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 13:34:25,981 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-25 13:34:25,983 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-25 13:34:25,985 INFO L87 Difference]: Start difference. First operand 456 states. Second operand 4 states. [2020-09-25 13:34:28,123 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 13:34:28,124 INFO L93 Difference]: Finished difference Result 1160 states and 1585 transitions. [2020-09-25 13:34:28,125 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-25 13:34:28,126 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 46 [2020-09-25 13:34:28,127 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 13:34:28,151 INFO L225 Difference]: With dead ends: 1160 [2020-09-25 13:34:28,152 INFO L226 Difference]: Without dead ends: 631 [2020-09-25 13:34:28,173 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 13:34:28,194 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 631 states. [2020-09-25 13:34:28,265 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 631 to 576. [2020-09-25 13:34:28,266 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 576 states. [2020-09-25 13:34:28,270 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 576 states to 576 states and 708 transitions. [2020-09-25 13:34:28,273 INFO L78 Accepts]: Start accepts. Automaton has 576 states and 708 transitions. Word has length 46 [2020-09-25 13:34:28,273 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 13:34:28,273 INFO L479 AbstractCegarLoop]: Abstraction has 576 states and 708 transitions. [2020-09-25 13:34:28,274 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-25 13:34:28,274 INFO L276 IsEmpty]: Start isEmpty. Operand 576 states and 708 transitions. [2020-09-25 13:34:28,281 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 130 [2020-09-25 13:34:28,281 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 13:34:28,282 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 13:34:28,282 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 13:34:28,283 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 13:34:28,283 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 13:34:28,283 INFO L82 PathProgramCache]: Analyzing trace with hash 1435399792, now seen corresponding path program 1 times [2020-09-25 13:34:28,283 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 13:34:28,284 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1092707353] [2020-09-25 13:34:28,284 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 13:34:28,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:34:28,365 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:34:28,444 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:34:28,849 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:34:29,420 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:34:30,943 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:34:31,001 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:34:31,595 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:34:32,364 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:34:32,426 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:34:33,334 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:34:33,335 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 140 [2020-09-25 13:34:33,335 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-09-25 13:34:33,335 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-09-25 13:34:33,335 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:34:33,336 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:34:33,336 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 13:34:33,336 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-09-25 13:34:33,336 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 86 [2020-09-25 13:34:33,337 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:34:33,400 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 13:34:33,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:34:33,409 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:34:33,421 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:34:33,421 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 13:34:33,422 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:34:33,422 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-09-25 13:34:33,422 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:34:33,422 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:34:33,423 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 13:34:33,423 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:34:33,423 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 13:34:33,423 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:34:33,444 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 13:34:33,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:34:33,485 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:34:33,616 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:34:33,616 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 79 [2020-09-25 13:34:33,616 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:34:33,617 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 148 [2020-09-25 13:34:33,617 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:34:33,617 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:34:33,617 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 13:34:33,618 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 13:34:33,618 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 78 [2020-09-25 13:34:33,618 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:34:33,737 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 30 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 13:34:33,738 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1092707353] [2020-09-25 13:34:33,739 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 13:34:33,739 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-09-25 13:34:33,740 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [571961584] [2020-09-25 13:34:33,744 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-25 13:34:33,744 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 13:34:33,744 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-25 13:34:33,745 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-09-25 13:34:33,745 INFO L87 Difference]: Start difference. First operand 576 states and 708 transitions. Second operand 7 states. [2020-09-25 13:34:36,115 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 13:34:36,116 INFO L93 Difference]: Finished difference Result 1487 states and 1929 transitions. [2020-09-25 13:34:36,121 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-09-25 13:34:36,121 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 129 [2020-09-25 13:34:36,122 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 13:34:36,129 INFO L225 Difference]: With dead ends: 1487 [2020-09-25 13:34:36,129 INFO L226 Difference]: Without dead ends: 926 [2020-09-25 13:34:36,132 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 13:34:36,135 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 926 states. [2020-09-25 13:34:36,171 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 926 to 888. [2020-09-25 13:34:36,172 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 888 states. [2020-09-25 13:34:36,177 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 888 states to 888 states and 1125 transitions. [2020-09-25 13:34:36,178 INFO L78 Accepts]: Start accepts. Automaton has 888 states and 1125 transitions. Word has length 129 [2020-09-25 13:34:36,178 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 13:34:36,178 INFO L479 AbstractCegarLoop]: Abstraction has 888 states and 1125 transitions. [2020-09-25 13:34:36,178 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-25 13:34:36,179 INFO L276 IsEmpty]: Start isEmpty. Operand 888 states and 1125 transitions. [2020-09-25 13:34:36,185 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 136 [2020-09-25 13:34:36,185 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 13:34:36,185 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 13:34:36,186 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-25 13:34:36,186 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 13:34:36,186 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 13:34:36,187 INFO L82 PathProgramCache]: Analyzing trace with hash 2104953989, now seen corresponding path program 1 times [2020-09-25 13:34:36,188 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 13:34:36,188 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1388251293] [2020-09-25 13:34:36,188 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 13:34:36,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:34:36,260 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:34:36,375 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:34:36,423 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:34:36,578 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:34:36,942 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:34:38,276 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:34:38,383 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:34:38,800 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:34:41,192 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:34:41,193 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 146 [2020-09-25 13:34:41,193 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-09-25 13:34:41,193 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4963 [2020-09-25 13:34:41,194 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:34:41,194 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:34:41,194 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-09-25 13:34:41,195 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-25 13:34:41,195 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 134 [2020-09-25 13:34:41,195 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:34:41,292 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 13:34:41,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:34:41,298 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:34:41,311 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:34:41,312 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 13:34:41,312 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:34:41,312 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-09-25 13:34:41,313 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:34:41,313 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:34:41,313 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 13:34:41,313 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:34:41,314 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 13:34:41,314 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:34:41,332 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 13:34:41,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:34:41,362 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:34:41,457 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:34:41,458 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 85 [2020-09-25 13:34:41,458 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:34:41,458 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 109 [2020-09-25 13:34:41,458 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:34:41,459 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:34:41,459 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 13:34:41,459 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 13:34:41,459 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 84 [2020-09-25 13:34:41,460 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:34:41,566 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 13:34:41,567 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1388251293] [2020-09-25 13:34:41,567 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 13:34:41,567 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-09-25 13:34:41,568 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1322026052] [2020-09-25 13:34:41,568 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-25 13:34:41,569 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 13:34:41,569 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-25 13:34:41,569 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2020-09-25 13:34:41,570 INFO L87 Difference]: Start difference. First operand 888 states and 1125 transitions. Second operand 8 states. [2020-09-25 13:34:45,068 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 13:34:45,069 INFO L93 Difference]: Finished difference Result 2409 states and 3205 transitions. [2020-09-25 13:34:45,069 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-09-25 13:34:45,070 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 135 [2020-09-25 13:34:45,071 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 13:34:45,089 INFO L225 Difference]: With dead ends: 2409 [2020-09-25 13:34:45,089 INFO L226 Difference]: Without dead ends: 1536 [2020-09-25 13:34:45,095 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 4 SyntacticMatches, 1 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=44, Invalid=112, Unknown=0, NotChecked=0, Total=156 [2020-09-25 13:34:45,100 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1536 states. [2020-09-25 13:34:45,173 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1536 to 1415. [2020-09-25 13:34:45,174 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1415 states. [2020-09-25 13:34:45,185 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1415 states to 1415 states and 1764 transitions. [2020-09-25 13:34:45,185 INFO L78 Accepts]: Start accepts. Automaton has 1415 states and 1764 transitions. Word has length 135 [2020-09-25 13:34:45,187 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 13:34:45,187 INFO L479 AbstractCegarLoop]: Abstraction has 1415 states and 1764 transitions. [2020-09-25 13:34:45,188 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-09-25 13:34:45,188 INFO L276 IsEmpty]: Start isEmpty. Operand 1415 states and 1764 transitions. [2020-09-25 13:34:45,195 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2020-09-25 13:34:45,195 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 13:34:45,195 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 13:34:45,196 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-25 13:34:45,196 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 13:34:45,196 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 13:34:45,196 INFO L82 PathProgramCache]: Analyzing trace with hash -431173929, now seen corresponding path program 1 times [2020-09-25 13:34:45,196 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 13:34:45,200 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2095329915] [2020-09-25 13:34:45,200 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 13:34:45,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:34:45,259 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:34:45,316 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:34:46,449 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:34:47,169 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:34:48,638 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:34:48,638 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 165 [2020-09-25 13:34:48,638 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-25 13:34:48,639 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3404 [2020-09-25 13:34:48,639 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:34:48,639 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:34:48,639 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 13:34:48,639 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-09-25 13:34:48,640 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 110 [2020-09-25 13:34:48,640 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:34:48,687 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 13:34:48,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:34:48,693 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:34:48,706 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:34:48,706 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 13:34:48,706 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:34:48,706 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-09-25 13:34:48,707 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:34:48,707 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:34:48,707 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 13:34:48,707 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:34:48,708 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-25 13:34:48,708 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:34:48,729 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 13:34:48,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:34:48,765 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:34:48,901 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:34:48,901 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 104 [2020-09-25 13:34:48,901 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:34:48,901 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 152 [2020-09-25 13:34:48,901 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:34:48,902 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:34:48,902 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 13:34:48,902 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 13:34:48,902 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 103 [2020-09-25 13:34:48,902 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 13:34:49,017 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 30 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 13:34:49,017 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2095329915] [2020-09-25 13:34:49,018 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 13:34:49,018 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-09-25 13:34:49,018 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1326436795] [2020-09-25 13:34:49,019 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-25 13:34:49,019 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 13:34:49,020 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-25 13:34:49,020 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-09-25 13:34:49,020 INFO L87 Difference]: Start difference. First operand 1415 states and 1764 transitions. Second operand 7 states. [2020-09-25 13:34:51,520 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 13:34:51,520 INFO L93 Difference]: Finished difference Result 3344 states and 4416 transitions. [2020-09-25 13:34:51,524 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-09-25 13:34:51,524 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 154 [2020-09-25 13:34:51,525 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 13:34:51,537 INFO L225 Difference]: With dead ends: 3344 [2020-09-25 13:34:51,537 INFO L226 Difference]: Without dead ends: 2106 [2020-09-25 13:34:51,543 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2020-09-25 13:34:51,545 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2106 states. [2020-09-25 13:34:51,604 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2106 to 2030. [2020-09-25 13:34:51,605 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2030 states. [2020-09-25 13:34:51,615 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2030 states to 2030 states and 2484 transitions. [2020-09-25 13:34:51,615 INFO L78 Accepts]: Start accepts. Automaton has 2030 states and 2484 transitions. Word has length 154 [2020-09-25 13:34:51,616 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 13:34:51,616 INFO L479 AbstractCegarLoop]: Abstraction has 2030 states and 2484 transitions. [2020-09-25 13:34:51,616 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-25 13:34:51,616 INFO L276 IsEmpty]: Start isEmpty. Operand 2030 states and 2484 transitions. [2020-09-25 13:34:51,619 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 215 [2020-09-25 13:34:51,620 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 13:34:51,620 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-09-25 13:34:51,620 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-25 13:34:51,621 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 13:34:51,621 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 13:34:51,621 INFO L82 PathProgramCache]: Analyzing trace with hash 392819605, now seen corresponding path program 1 times [2020-09-25 13:34:51,621 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 13:34:51,622 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1673004298] [2020-09-25 13:34:51,622 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 13:34:51,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:34:51,697 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:34:51,809 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:34:51,934 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:34:52,752 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:34:52,915 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:34:53,023 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:34:54,373 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:34:54,551 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:34:54,980 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:34:56,670 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:34:56,671 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 227 [2020-09-25 13:34:56,671 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-09-25 13:34:56,672 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5008 [2020-09-25 13:34:56,672 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:34:56,672 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:34:56,673 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-25 13:34:56,673 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 94 [2020-09-25 13:34:56,673 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 132 [2020-09-25 13:34:56,674 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:34:56,840 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 13:34:56,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:34:56,846 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:34:56,855 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:34:56,855 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 13:34:56,856 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:34:56,856 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-09-25 13:34:56,856 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:34:56,857 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:34:56,857 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 13:34:56,857 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:34:56,863 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 13:34:56,863 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 7 [2020-09-25 13:34:56,885 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 13:34:56,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:34:56,921 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:34:57,041 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:34:57,041 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 75 [2020-09-25 13:34:57,042 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:34:57,042 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 135 [2020-09-25 13:34:57,042 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:34:57,043 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:34:57,043 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 13:34:57,043 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:34:57,044 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 66 [2020-09-25 13:34:57,044 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:34:57,089 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2020-09-25 13:34:57,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:34:57,161 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:34:57,262 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:34:57,461 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:34:57,461 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 85 [2020-09-25 13:34:57,461 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 13:34:57,462 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 319 [2020-09-25 13:34:57,462 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:34:57,463 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:34:57,463 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 13:34:57,463 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:34:57,463 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 75 [2020-09-25 13:34:57,464 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:34:57,587 INFO L134 CoverageAnalysis]: Checked inductivity of 136 backedges. 70 proven. 2 refuted. 0 times theorem prover too weak. 64 trivial. 0 not checked. [2020-09-25 13:34:57,588 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1673004298] [2020-09-25 13:34:57,588 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 13:34:57,588 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-09-25 13:34:57,589 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [356481206] [2020-09-25 13:34:57,590 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-25 13:34:57,590 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 13:34:57,590 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-25 13:34:57,591 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2020-09-25 13:34:57,591 INFO L87 Difference]: Start difference. First operand 2030 states and 2484 transitions. Second operand 8 states. [2020-09-25 13:35:01,140 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 13:35:01,140 INFO L93 Difference]: Finished difference Result 5343 states and 6982 transitions. [2020-09-25 13:35:01,143 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-09-25 13:35:01,143 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 214 [2020-09-25 13:35:01,144 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 13:35:01,168 INFO L225 Difference]: With dead ends: 5343 [2020-09-25 13:35:01,168 INFO L226 Difference]: Without dead ends: 3970 [2020-09-25 13:35:01,175 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=42, Invalid=68, Unknown=0, NotChecked=0, Total=110 [2020-09-25 13:35:01,180 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3970 states. [2020-09-25 13:35:01,278 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3970 to 3128. [2020-09-25 13:35:01,278 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3128 states. [2020-09-25 13:35:01,291 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3128 states to 3128 states and 4127 transitions. [2020-09-25 13:35:01,291 INFO L78 Accepts]: Start accepts. Automaton has 3128 states and 4127 transitions. Word has length 214 [2020-09-25 13:35:01,292 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 13:35:01,292 INFO L479 AbstractCegarLoop]: Abstraction has 3128 states and 4127 transitions. [2020-09-25 13:35:01,292 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-09-25 13:35:01,292 INFO L276 IsEmpty]: Start isEmpty. Operand 3128 states and 4127 transitions. [2020-09-25 13:35:01,299 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 219 [2020-09-25 13:35:01,299 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 13:35:01,299 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-09-25 13:35:01,300 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-25 13:35:01,300 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 13:35:01,300 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 13:35:01,300 INFO L82 PathProgramCache]: Analyzing trace with hash 841465058, now seen corresponding path program 1 times [2020-09-25 13:35:01,301 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 13:35:01,301 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [340057859] [2020-09-25 13:35:01,301 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 13:35:01,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:35:01,384 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:35:01,463 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:35:01,625 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:35:01,918 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:35:04,018 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:35:04,102 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:35:04,305 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:35:04,516 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:35:04,660 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:35:06,359 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:35:06,359 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 231 [2020-09-25 13:35:06,359 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-09-25 13:35:06,359 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5013 [2020-09-25 13:35:06,360 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:35:06,360 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:35:06,360 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-09-25 13:35:06,360 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-25 13:35:06,360 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 178 [2020-09-25 13:35:06,360 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 13:35:06,438 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 13:35:06,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:35:06,443 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:35:06,456 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:35:06,456 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 13:35:06,457 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:35:06,457 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-09-25 13:35:06,457 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:35:06,457 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:35:06,457 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 13:35:06,458 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:35:06,458 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 13:35:06,458 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 13:35:06,473 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 13:35:06,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:35:06,502 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:35:06,624 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:35:06,624 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 85 [2020-09-25 13:35:06,624 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:35:06,625 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 135 [2020-09-25 13:35:06,625 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:35:06,625 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:35:06,626 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 13:35:06,626 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 13:35:06,626 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 84 [2020-09-25 13:35:06,627 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:35:06,714 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2020-09-25 13:35:06,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:35:06,746 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:35:06,866 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:35:06,866 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 79 [2020-09-25 13:35:06,867 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:35:06,867 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 133 [2020-09-25 13:35:06,867 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:35:06,867 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:35:06,867 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 13:35:06,868 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 13:35:06,868 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 78 [2020-09-25 13:35:06,868 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 13:35:07,045 INFO L134 CoverageAnalysis]: Checked inductivity of 139 backedges. 136 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-09-25 13:35:07,046 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [340057859] [2020-09-25 13:35:07,047 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 13:35:07,047 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-09-25 13:35:07,047 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [881827267] [2020-09-25 13:35:07,048 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-09-25 13:35:07,048 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 13:35:07,048 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-09-25 13:35:07,048 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2020-09-25 13:35:07,049 INFO L87 Difference]: Start difference. First operand 3128 states and 4127 transitions. Second operand 11 states.