/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=SMALLEST --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_label55.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-24 18:25:43,060 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-24 18:25:43,064 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-24 18:25:43,097 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-24 18:25:43,098 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-24 18:25:43,099 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-24 18:25:43,100 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-24 18:25:43,102 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-24 18:25:43,104 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-24 18:25:43,105 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-24 18:25:43,106 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-24 18:25:43,107 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-24 18:25:43,108 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-24 18:25:43,109 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-24 18:25:43,110 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-24 18:25:43,111 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-24 18:25:43,112 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-24 18:25:43,113 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-24 18:25:43,115 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-24 18:25:43,117 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-24 18:25:43,119 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-24 18:25:43,120 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-24 18:25:43,121 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-24 18:25:43,122 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-24 18:25:43,125 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-24 18:25:43,125 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-24 18:25:43,125 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-24 18:25:43,127 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-24 18:25:43,127 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-24 18:25:43,128 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-24 18:25:43,129 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-24 18:25:43,130 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-24 18:25:43,130 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-24 18:25:43,131 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-24 18:25:43,133 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-24 18:25:43,133 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-24 18:25:43,134 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-24 18:25:43,134 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-24 18:25:43,134 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-24 18:25:43,135 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-24 18:25:43,136 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-24 18:25:43,137 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 [2020-09-24 18:25:43,175 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-24 18:25:43,175 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-24 18:25:43,180 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-24 18:25:43,180 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-24 18:25:43,180 INFO L138 SettingsManager]: * Use SBE=true [2020-09-24 18:25:43,180 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-24 18:25:43,181 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-24 18:25:43,181 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-24 18:25:43,181 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-24 18:25:43,181 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-24 18:25:43,181 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-24 18:25:43,181 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-24 18:25:43,182 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-24 18:25:43,182 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-24 18:25:43,182 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-24 18:25:43,182 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-24 18:25:43,182 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-24 18:25:43,183 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-24 18:25:43,183 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-24 18:25:43,183 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-24 18:25:43,183 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-24 18:25:43,184 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-24 18:25:43,184 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-24 18:25:43,184 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-24 18:25:43,184 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-24 18:25:43,184 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-24 18:25:43,185 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-24 18:25:43,185 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-24 18:25:43,185 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-24 18:25:43,185 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=SMALLEST;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=SMALLEST;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=SMALLEST;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=SMALLEST;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=SMALLEST;log-additional-information=true; [2020-09-24 18:25:43,685 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-24 18:25:43,710 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-24 18:25:43,715 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-24 18:25:43,718 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-24 18:25:43,719 INFO L275 PluginConnector]: CDTParser initialized [2020-09-24 18:25:43,720 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem10_label55.c [2020-09-24 18:25:43,818 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/33f1101e6/6bcd9a7b4d8747458890b24ab667ddee/FLAGf149617f7 [2020-09-24 18:25:44,491 INFO L306 CDTParser]: Found 1 translation units. [2020-09-24 18:25:44,492 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem10_label55.c [2020-09-24 18:25:44,506 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/33f1101e6/6bcd9a7b4d8747458890b24ab667ddee/FLAGf149617f7 [2020-09-24 18:25:44,758 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/33f1101e6/6bcd9a7b4d8747458890b24ab667ddee [2020-09-24 18:25:44,775 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-24 18:25:44,781 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-24 18:25:44,784 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-24 18:25:44,785 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-24 18:25:44,789 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-24 18:25:44,790 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 06:25:44" (1/1) ... [2020-09-24 18:25:44,796 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@b86a7e8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 06:25:44, skipping insertion in model container [2020-09-24 18:25:44,796 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 06:25:44" (1/1) ... [2020-09-24 18:25:44,807 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-24 18:25:44,878 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-24 18:25:45,454 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-24 18:25:45,460 INFO L203 MainTranslator]: Completed pre-run [2020-09-24 18:25:45,554 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-24 18:25:45,574 INFO L208 MainTranslator]: Completed translation [2020-09-24 18:25:45,575 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 06:25:45 WrapperNode [2020-09-24 18:25:45,575 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-24 18:25:45,576 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-24 18:25:45,576 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-24 18:25:45,576 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-24 18:25:45,595 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 06:25:45" (1/1) ... [2020-09-24 18:25:45,596 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 06:25:45" (1/1) ... [2020-09-24 18:25:45,618 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 06:25:45" (1/1) ... [2020-09-24 18:25:45,626 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 06:25:45" (1/1) ... [2020-09-24 18:25:45,672 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 06:25:45" (1/1) ... [2020-09-24 18:25:45,685 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 06:25:45" (1/1) ... [2020-09-24 18:25:45,691 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 06:25:45" (1/1) ... [2020-09-24 18:25:45,702 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-24 18:25:45,702 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-24 18:25:45,703 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-24 18:25:45,703 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-24 18:25:45,704 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 06:25:45" (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 [2020-09-24 18:25:45,810 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-24 18:25:45,810 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-24 18:25:45,811 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-09-24 18:25:45,811 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-24 18:25:45,811 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-09-24 18:25:45,811 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-24 18:25:45,811 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-24 18:25:45,812 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-09-24 18:25:45,813 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-24 18:25:45,813 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-24 18:25:45,813 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-24 18:25:47,419 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-24 18:25:47,419 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-09-24 18:25:47,428 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 06:25:47 BoogieIcfgContainer [2020-09-24 18:25:47,429 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-24 18:25:47,430 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-24 18:25:47,430 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-24 18:25:47,434 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-24 18:25:47,435 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.09 06:25:44" (1/3) ... [2020-09-24 18:25:47,436 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@17d73382 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 06:25:47, skipping insertion in model container [2020-09-24 18:25:47,437 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 06:25:45" (2/3) ... [2020-09-24 18:25:47,437 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@17d73382 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 06:25:47, skipping insertion in model container [2020-09-24 18:25:47,437 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 06:25:47" (3/3) ... [2020-09-24 18:25:47,440 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem10_label55.c [2020-09-24 18:25:47,453 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-24 18:25:47,466 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-24 18:25:47,493 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-24 18:25:47,533 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-24 18:25:47,534 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-24 18:25:47,534 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-24 18:25:47,534 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-24 18:25:47,534 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-24 18:25:47,534 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-24 18:25:47,535 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-24 18:25:47,535 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-24 18:25:47,571 INFO L276 IsEmpty]: Start isEmpty. Operand 456 states. [2020-09-24 18:25:47,581 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2020-09-24 18:25:47,582 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 18:25:47,583 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] [2020-09-24 18:25:47,584 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 18:25:47,594 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 18:25:47,594 INFO L82 PathProgramCache]: Analyzing trace with hash -18090369, now seen corresponding path program 1 times [2020-09-24 18:25:47,609 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 18:25:47,610 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1835405144] [2020-09-24 18:25:47,610 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 18:25:47,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:25:47,845 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:25:48,107 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:25:48,157 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:25:48,530 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:25:48,530 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 46 [2020-09-24 18:25:48,531 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-24 18:25:48,531 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 727 [2020-09-24 18:25:48,534 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:25:48,535 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-24 18:25:48,535 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-09-24 18:25:48,535 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 33 [2020-09-24 18:25:48,536 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-09-24 18:25:48,631 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 18:25:48,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:25:48,644 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:25:48,660 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:25:48,660 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-24 18:25:48,661 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:25:48,661 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-09-24 18:25:48,661 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:25:48,662 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 18:25:48,662 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:25:48,662 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-24 18:25:48,662 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 18:25:48,682 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 18:25:48,683 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1835405144] [2020-09-24 18:25:48,685 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 18:25:48,686 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-24 18:25:48,687 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [924201375] [2020-09-24 18:25:48,693 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-24 18:25:48,694 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 18:25:48,713 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-24 18:25:48,714 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-24 18:25:48,716 INFO L87 Difference]: Start difference. First operand 456 states. Second operand 4 states. [2020-09-24 18:25:50,753 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 18:25:50,753 INFO L93 Difference]: Finished difference Result 1069 states and 1495 transitions. [2020-09-24 18:25:50,754 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-24 18:25:50,756 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 37 [2020-09-24 18:25:50,757 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 18:25:50,780 INFO L225 Difference]: With dead ends: 1069 [2020-09-24 18:25:50,780 INFO L226 Difference]: Without dead ends: 555 [2020-09-24 18:25:50,791 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 [2020-09-24 18:25:50,817 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 555 states. [2020-09-24 18:25:50,891 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 555 to 543. [2020-09-24 18:25:50,893 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 543 states. [2020-09-24 18:25:50,896 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 543 states to 543 states and 670 transitions. [2020-09-24 18:25:50,899 INFO L78 Accepts]: Start accepts. Automaton has 543 states and 670 transitions. Word has length 37 [2020-09-24 18:25:50,899 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 18:25:50,900 INFO L479 AbstractCegarLoop]: Abstraction has 543 states and 670 transitions. [2020-09-24 18:25:50,900 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-24 18:25:50,900 INFO L276 IsEmpty]: Start isEmpty. Operand 543 states and 670 transitions. [2020-09-24 18:25:50,911 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2020-09-24 18:25:50,912 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 18:25:50,913 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] [2020-09-24 18:25:50,914 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-24 18:25:50,914 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 18:25:50,914 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 18:25:50,914 INFO L82 PathProgramCache]: Analyzing trace with hash 916079797, now seen corresponding path program 1 times [2020-09-24 18:25:50,914 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 18:25:50,915 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1826583703] [2020-09-24 18:25:50,915 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 18:25:50,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:25:50,980 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:25:51,088 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:25:51,362 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:25:51,468 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:25:52,529 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:25:52,577 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:25:52,624 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:25:52,625 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 128 [2020-09-24 18:25:52,625 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-09-24 18:25:52,625 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1672 [2020-09-24 18:25:52,625 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:25:52,625 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 18:25:52,626 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 96 [2020-09-24 18:25:52,626 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 31 [2020-09-24 18:25:52,626 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:25:52,695 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 18:25:52,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:25:52,701 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:25:52,710 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:25:52,710 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-24 18:25:52,711 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:25:52,711 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-09-24 18:25:52,711 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:25:52,711 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 18:25:52,712 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:25:52,712 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 18:25:52,712 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 18:25:52,733 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-24 18:25:52,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:25:52,767 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:25:52,831 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:25:52,831 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-09-24 18:25:52,832 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:25:52,832 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 79 [2020-09-24 18:25:52,832 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:25:52,832 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 18:25:52,833 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:25:52,833 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 67 [2020-09-24 18:25:52,833 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:25:52,879 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 20 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 18:25:52,879 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1826583703] [2020-09-24 18:25:52,879 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 18:25:52,880 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-09-24 18:25:52,880 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [73269886] [2020-09-24 18:25:52,882 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-24 18:25:52,882 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 18:25:52,883 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-24 18:25:52,883 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-24 18:25:52,883 INFO L87 Difference]: Start difference. First operand 543 states and 670 transitions. Second operand 5 states. [2020-09-24 18:25:54,901 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 18:25:54,901 INFO L93 Difference]: Finished difference Result 1417 states and 1827 transitions. [2020-09-24 18:25:54,902 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-24 18:25:54,903 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 117 [2020-09-24 18:25:54,903 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 18:25:54,909 INFO L225 Difference]: With dead ends: 1417 [2020-09-24 18:25:54,909 INFO L226 Difference]: Without dead ends: 889 [2020-09-24 18:25:54,912 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 [2020-09-24 18:25:54,914 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 889 states. [2020-09-24 18:25:54,950 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 889 to 849. [2020-09-24 18:25:54,950 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 849 states. [2020-09-24 18:25:54,954 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 849 states to 849 states and 1040 transitions. [2020-09-24 18:25:54,955 INFO L78 Accepts]: Start accepts. Automaton has 849 states and 1040 transitions. Word has length 117 [2020-09-24 18:25:54,956 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 18:25:54,956 INFO L479 AbstractCegarLoop]: Abstraction has 849 states and 1040 transitions. [2020-09-24 18:25:54,956 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-24 18:25:54,956 INFO L276 IsEmpty]: Start isEmpty. Operand 849 states and 1040 transitions. [2020-09-24 18:25:54,961 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2020-09-24 18:25:54,961 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 18:25:54,962 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] [2020-09-24 18:25:54,962 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-24 18:25:54,962 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 18:25:54,963 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 18:25:54,963 INFO L82 PathProgramCache]: Analyzing trace with hash -2061157014, now seen corresponding path program 1 times [2020-09-24 18:25:54,963 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 18:25:54,963 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1101425526] [2020-09-24 18:25:54,964 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 18:25:55,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:25:55,034 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:25:55,357 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:25:55,479 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:25:56,485 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:25:56,485 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 139 [2020-09-24 18:25:56,486 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-24 18:25:56,486 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1480 [2020-09-24 18:25:56,486 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:25:56,486 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 18:25:56,487 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 108 [2020-09-24 18:25:56,487 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-09-24 18:25:56,487 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 18:25:56,551 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 18:25:56,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:25:56,556 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:25:56,564 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:25:56,564 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-24 18:25:56,564 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:25:56,565 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-09-24 18:25:56,565 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:25:56,565 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 18:25:56,566 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:25:56,566 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 18:25:56,566 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 18:25:56,582 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-24 18:25:56,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:25:56,623 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:25:56,754 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:25:56,754 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 87 [2020-09-24 18:25:56,755 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:25:56,755 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 149 [2020-09-24 18:25:56,756 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:25:56,756 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 18:25:56,756 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:25:56,757 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 79 [2020-09-24 18:25:56,757 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 18:25:56,807 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 20 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 18:25:56,808 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1101425526] [2020-09-24 18:25:56,808 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 18:25:56,809 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-09-24 18:25:56,809 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [998583278] [2020-09-24 18:25:56,810 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-24 18:25:56,810 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 18:25:56,811 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-24 18:25:56,811 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-24 18:25:56,811 INFO L87 Difference]: Start difference. First operand 849 states and 1040 transitions. Second operand 5 states. [2020-09-24 18:25:58,738 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 18:25:58,738 INFO L93 Difference]: Finished difference Result 2007 states and 2540 transitions. [2020-09-24 18:25:58,739 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-24 18:25:58,739 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 128 [2020-09-24 18:25:58,740 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 18:25:58,753 INFO L225 Difference]: With dead ends: 2007 [2020-09-24 18:25:58,754 INFO L226 Difference]: Without dead ends: 1173 [2020-09-24 18:25:58,757 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 [2020-09-24 18:25:58,759 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1173 states. [2020-09-24 18:25:58,805 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1173 to 1153. [2020-09-24 18:25:58,805 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1153 states. [2020-09-24 18:25:58,810 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1153 states to 1153 states and 1406 transitions. [2020-09-24 18:25:58,811 INFO L78 Accepts]: Start accepts. Automaton has 1153 states and 1406 transitions. Word has length 128 [2020-09-24 18:25:58,812 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 18:25:58,812 INFO L479 AbstractCegarLoop]: Abstraction has 1153 states and 1406 transitions. [2020-09-24 18:25:58,812 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-24 18:25:58,812 INFO L276 IsEmpty]: Start isEmpty. Operand 1153 states and 1406 transitions. [2020-09-24 18:25:58,815 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 136 [2020-09-24 18:25:58,816 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 18:25:58,816 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] [2020-09-24 18:25:58,816 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-24 18:25:58,816 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 18:25:58,817 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 18:25:58,817 INFO L82 PathProgramCache]: Analyzing trace with hash 1709305720, now seen corresponding path program 1 times [2020-09-24 18:25:58,817 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 18:25:58,821 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1758911342] [2020-09-24 18:25:58,821 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 18:25:58,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:25:58,885 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:25:58,998 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:25:59,293 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:25:59,797 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:26:00,840 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:26:00,900 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:26:01,076 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:26:01,076 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 146 [2020-09-24 18:26:01,077 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-09-24 18:26:01,077 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2216 [2020-09-24 18:26:01,077 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:26:01,077 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 18:26:01,085 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 114 [2020-09-24 18:26:01,086 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 31 [2020-09-24 18:26:01,086 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 8 [2020-09-24 18:26:01,171 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 18:26:01,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:26:01,176 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:26:01,186 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:26:01,186 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-24 18:26:01,186 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:26:01,186 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-09-24 18:26:01,187 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:26:01,187 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 18:26:01,187 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:26:01,187 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 18:26:01,187 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:26:01,200 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-24 18:26:01,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:26:01,235 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:26:01,318 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:26:01,319 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 94 [2020-09-24 18:26:01,319 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:26:01,319 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 98 [2020-09-24 18:26:01,319 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:26:01,320 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 18:26:01,320 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:26:01,320 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 85 [2020-09-24 18:26:01,323 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-09-24 18:26:01,386 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 20 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 18:26:01,387 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1758911342] [2020-09-24 18:26:01,387 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 18:26:01,388 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-09-24 18:26:01,388 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [350151940] [2020-09-24 18:26:01,390 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-24 18:26:01,391 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 18:26:01,391 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-24 18:26:01,392 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-24 18:26:01,392 INFO L87 Difference]: Start difference. First operand 1153 states and 1406 transitions. Second operand 5 states. [2020-09-24 18:26:03,414 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 18:26:03,415 INFO L93 Difference]: Finished difference Result 3103 states and 3921 transitions. [2020-09-24 18:26:03,415 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-24 18:26:03,415 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 135 [2020-09-24 18:26:03,416 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 18:26:03,435 INFO L225 Difference]: With dead ends: 3103 [2020-09-24 18:26:03,436 INFO L226 Difference]: Without dead ends: 1965 [2020-09-24 18:26:03,443 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 6 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-09-24 18:26:03,447 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1965 states. [2020-09-24 18:26:03,526 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1965 to 1916. [2020-09-24 18:26:03,526 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1916 states. [2020-09-24 18:26:03,541 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1916 states to 1916 states and 2319 transitions. [2020-09-24 18:26:03,542 INFO L78 Accepts]: Start accepts. Automaton has 1916 states and 2319 transitions. Word has length 135 [2020-09-24 18:26:03,542 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 18:26:03,542 INFO L479 AbstractCegarLoop]: Abstraction has 1916 states and 2319 transitions. [2020-09-24 18:26:03,543 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-24 18:26:03,543 INFO L276 IsEmpty]: Start isEmpty. Operand 1916 states and 2319 transitions. [2020-09-24 18:26:03,549 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2020-09-24 18:26:03,549 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 18:26:03,549 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 18:26:03,550 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-24 18:26:03,550 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 18:26:03,550 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 18:26:03,551 INFO L82 PathProgramCache]: Analyzing trace with hash -844817794, now seen corresponding path program 1 times [2020-09-24 18:26:03,551 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 18:26:03,551 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1964813601] [2020-09-24 18:26:03,551 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 18:26:03,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:26:03,627 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:26:03,894 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:26:03,952 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:26:04,165 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:26:04,915 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:26:05,470 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:26:07,098 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:26:07,099 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 156 [2020-09-24 18:26:07,099 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-09-24 18:26:07,099 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3504 [2020-09-24 18:26:07,099 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:26:07,100 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 18:26:07,100 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 123 [2020-09-24 18:26:07,100 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 32 [2020-09-24 18:26:07,100 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:26:07,158 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 18:26:07,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:26:07,161 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:26:07,167 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:26:07,168 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-24 18:26:07,168 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:26:07,168 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-24 18:26:07,168 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:26:07,169 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 18:26:07,169 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:26:07,169 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 18:26:07,169 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:26:07,187 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-24 18:26:07,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:26:07,237 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:26:07,308 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:26:07,308 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 104 [2020-09-24 18:26:07,308 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:26:07,308 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 88 [2020-09-24 18:26:07,309 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:26:07,309 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 18:26:07,309 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:26:07,309 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 94 [2020-09-24 18:26:07,310 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:26:07,356 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 20 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 18:26:07,357 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1964813601] [2020-09-24 18:26:07,357 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 18:26:07,357 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-09-24 18:26:07,358 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1430978098] [2020-09-24 18:26:07,358 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-24 18:26:07,358 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 18:26:07,359 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-24 18:26:07,359 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-24 18:26:07,359 INFO L87 Difference]: Start difference. First operand 1916 states and 2319 transitions. Second operand 5 states. [2020-09-24 18:26:09,874 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 18:26:09,874 INFO L93 Difference]: Finished difference Result 4678 states and 5797 transitions. [2020-09-24 18:26:09,875 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-24 18:26:09,875 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 145 [2020-09-24 18:26:09,876 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 18:26:09,890 INFO L225 Difference]: With dead ends: 4678 [2020-09-24 18:26:09,891 INFO L226 Difference]: Without dead ends: 2777 [2020-09-24 18:26:09,897 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 [2020-09-24 18:26:09,902 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2777 states. [2020-09-24 18:26:09,976 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2777 to 2714. [2020-09-24 18:26:09,976 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2714 states. [2020-09-24 18:26:09,988 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2714 states to 2714 states and 3348 transitions. [2020-09-24 18:26:09,989 INFO L78 Accepts]: Start accepts. Automaton has 2714 states and 3348 transitions. Word has length 145 [2020-09-24 18:26:09,989 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 18:26:09,989 INFO L479 AbstractCegarLoop]: Abstraction has 2714 states and 3348 transitions. [2020-09-24 18:26:09,989 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-24 18:26:09,989 INFO L276 IsEmpty]: Start isEmpty. Operand 2714 states and 3348 transitions. [2020-09-24 18:26:09,993 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 165 [2020-09-24 18:26:09,993 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 18:26:09,994 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 18:26:09,994 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-24 18:26:09,994 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 18:26:09,994 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 18:26:09,994 INFO L82 PathProgramCache]: Analyzing trace with hash -720151569, now seen corresponding path program 1 times [2020-09-24 18:26:09,995 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 18:26:09,995 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [833488] [2020-09-24 18:26:09,995 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 18:26:10,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:26:10,064 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:26:10,126 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:26:10,365 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:26:12,667 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:26:12,667 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 175 [2020-09-24 18:26:12,668 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-24 18:26:12,668 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2634 [2020-09-24 18:26:12,668 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:26:12,669 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 18:26:12,669 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 142 [2020-09-24 18:26:12,669 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 32 [2020-09-24 18:26:12,670 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 18:26:12,787 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 18:26:12,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:26:12,792 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:26:12,802 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:26:12,803 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-24 18:26:12,803 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:26:12,803 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-09-24 18:26:12,804 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:26:12,804 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 18:26:12,804 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:26:12,805 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 18:26:12,805 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 18:26:12,825 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-24 18:26:12,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:26:12,901 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:26:13,061 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:26:13,061 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 123 [2020-09-24 18:26:13,062 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:26:13,062 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 195 [2020-09-24 18:26:13,062 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:26:13,063 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 18:26:13,063 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:26:13,063 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 113 [2020-09-24 18:26:13,064 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 18:26:13,195 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 20 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 18:26:13,196 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [833488] [2020-09-24 18:26:13,197 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 18:26:13,198 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-09-24 18:26:13,198 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [645994524] [2020-09-24 18:26:13,198 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-24 18:26:13,199 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 18:26:13,199 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-24 18:26:13,200 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-24 18:26:13,200 INFO L87 Difference]: Start difference. First operand 2714 states and 3348 transitions. Second operand 5 states. [2020-09-24 18:26:15,521 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 18:26:15,522 INFO L93 Difference]: Finished difference Result 6125 states and 7696 transitions. [2020-09-24 18:26:15,525 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-24 18:26:15,526 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 164 [2020-09-24 18:26:15,526 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 18:26:15,544 INFO L225 Difference]: With dead ends: 6125 [2020-09-24 18:26:15,544 INFO L226 Difference]: Without dead ends: 3426 [2020-09-24 18:26:15,553 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 [2020-09-24 18:26:15,557 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3426 states. [2020-09-24 18:26:15,639 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3426 to 3365. [2020-09-24 18:26:15,640 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3365 states. [2020-09-24 18:26:15,648 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3365 states to 3365 states and 4225 transitions. [2020-09-24 18:26:15,649 INFO L78 Accepts]: Start accepts. Automaton has 3365 states and 4225 transitions. Word has length 164 [2020-09-24 18:26:15,649 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 18:26:15,649 INFO L479 AbstractCegarLoop]: Abstraction has 3365 states and 4225 transitions. [2020-09-24 18:26:15,649 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-24 18:26:15,649 INFO L276 IsEmpty]: Start isEmpty. Operand 3365 states and 4225 transitions. [2020-09-24 18:26:15,653 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 167 [2020-09-24 18:26:15,653 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 18:26:15,654 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 18:26:15,654 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-09-24 18:26:15,654 INFO L427 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 18:26:15,654 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 18:26:15,655 INFO L82 PathProgramCache]: Analyzing trace with hash 1789909959, now seen corresponding path program 1 times [2020-09-24 18:26:15,655 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 18:26:15,655 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [65037583] [2020-09-24 18:26:15,655 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 18:26:15,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:26:15,728 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:26:15,788 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:26:15,960 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:26:16,131 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:26:16,211 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:26:19,280 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:26:20,073 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:26:20,695 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:26:20,695 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 177 [2020-09-24 18:26:20,695 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-09-24 18:26:20,696 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4999 [2020-09-24 18:26:20,696 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:26:20,696 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 18:26:20,696 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 146 [2020-09-24 18:26:20,696 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-09-24 18:26:20,697 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:26:20,751 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 18:26:20,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:26:20,756 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:26:20,759 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:26:20,759 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-24 18:26:20,759 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:26:20,760 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-24 18:26:20,760 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:26:20,760 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 18:26:20,760 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:26:20,761 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 18:26:20,761 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:26:20,774 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-24 18:26:20,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:26:20,821 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:26:20,894 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:26:20,894 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 125 [2020-09-24 18:26:20,895 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:26:20,895 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 94 [2020-09-24 18:26:20,895 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:26:20,896 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 18:26:20,896 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:26:20,896 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 117 [2020-09-24 18:26:20,897 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 18:26:20,984 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 20 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 18:26:20,984 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [65037583] [2020-09-24 18:26:20,985 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 18:26:20,985 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-09-24 18:26:20,985 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [83454031] [2020-09-24 18:26:20,986 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-24 18:26:20,986 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 18:26:20,987 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-24 18:26:20,987 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-24 18:26:20,987 INFO L87 Difference]: Start difference. First operand 3365 states and 4225 transitions. Second operand 5 states. [2020-09-24 18:26:22,977 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 18:26:22,977 INFO L93 Difference]: Finished difference Result 6897 states and 8764 transitions. [2020-09-24 18:26:22,982 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-24 18:26:22,982 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 166 [2020-09-24 18:26:22,983 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 18:26:22,999 INFO L225 Difference]: With dead ends: 6897 [2020-09-24 18:26:22,999 INFO L226 Difference]: Without dead ends: 3383 [2020-09-24 18:26:23,010 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 [2020-09-24 18:26:23,014 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3383 states. [2020-09-24 18:26:23,102 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3383 to 3353. [2020-09-24 18:26:23,102 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3353 states. [2020-09-24 18:26:23,112 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3353 states to 3353 states and 4192 transitions. [2020-09-24 18:26:23,112 INFO L78 Accepts]: Start accepts. Automaton has 3353 states and 4192 transitions. Word has length 166 [2020-09-24 18:26:23,113 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 18:26:23,113 INFO L479 AbstractCegarLoop]: Abstraction has 3353 states and 4192 transitions. [2020-09-24 18:26:23,113 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-24 18:26:23,113 INFO L276 IsEmpty]: Start isEmpty. Operand 3353 states and 4192 transitions. [2020-09-24 18:26:23,117 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 184 [2020-09-24 18:26:23,118 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 18:26:23,118 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 18:26:23,118 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-09-24 18:26:23,118 INFO L427 AbstractCegarLoop]: === Iteration 8 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 18:26:23,119 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 18:26:23,119 INFO L82 PathProgramCache]: Analyzing trace with hash -375587405, now seen corresponding path program 1 times [2020-09-24 18:26:23,119 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 18:26:23,119 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1159690382] [2020-09-24 18:26:23,120 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 18:26:23,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:26:23,184 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:26:23,463 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:26:24,476 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:26:24,477 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 194 [2020-09-24 18:26:24,477 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-24 18:26:24,477 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1321 [2020-09-24 18:26:24,477 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:26:24,478 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 18:26:24,478 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 162 [2020-09-24 18:26:24,478 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 31 [2020-09-24 18:26:24,478 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:26:24,558 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 18:26:24,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:26:24,562 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:26:24,568 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:26:24,569 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-24 18:26:24,569 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:26:24,569 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-24 18:26:24,569 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:26:24,569 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 18:26:24,570 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:26:24,570 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 18:26:24,570 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:26:24,583 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-24 18:26:24,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:26:24,627 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:26:24,685 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:26:24,685 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 142 [2020-09-24 18:26:24,685 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:26:24,685 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 76 [2020-09-24 18:26:24,686 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:26:24,686 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 18:26:24,686 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:26:24,686 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 133 [2020-09-24 18:26:24,687 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:26:24,760 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 20 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 18:26:24,761 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1159690382] [2020-09-24 18:26:24,761 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 18:26:24,761 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-09-24 18:26:24,762 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [922831763] [2020-09-24 18:26:24,762 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-24 18:26:24,762 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 18:26:24,763 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-24 18:26:24,763 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-09-24 18:26:24,763 INFO L87 Difference]: Start difference. First operand 3353 states and 4192 transitions. Second operand 6 states. [2020-09-24 18:26:27,331 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 18:26:27,332 INFO L93 Difference]: Finished difference Result 8259 states and 10747 transitions. [2020-09-24 18:26:27,333 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-09-24 18:26:27,334 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 183 [2020-09-24 18:26:27,334 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 18:26:27,356 INFO L225 Difference]: With dead ends: 8259 [2020-09-24 18:26:27,357 INFO L226 Difference]: Without dead ends: 4921 [2020-09-24 18:26:27,368 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-09-24 18:26:27,373 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4921 states. [2020-09-24 18:26:27,503 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4921 to 4873. [2020-09-24 18:26:27,504 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4873 states. [2020-09-24 18:26:27,515 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4873 states to 4873 states and 6221 transitions. [2020-09-24 18:26:27,515 INFO L78 Accepts]: Start accepts. Automaton has 4873 states and 6221 transitions. Word has length 183 [2020-09-24 18:26:27,516 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 18:26:27,516 INFO L479 AbstractCegarLoop]: Abstraction has 4873 states and 6221 transitions. [2020-09-24 18:26:27,516 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-09-24 18:26:27,516 INFO L276 IsEmpty]: Start isEmpty. Operand 4873 states and 6221 transitions. [2020-09-24 18:26:27,521 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 189 [2020-09-24 18:26:27,521 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 18:26:27,521 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 18:26:27,522 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-09-24 18:26:27,522 INFO L427 AbstractCegarLoop]: === Iteration 9 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 18:26:27,522 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 18:26:27,522 INFO L82 PathProgramCache]: Analyzing trace with hash -980701640, now seen corresponding path program 1 times [2020-09-24 18:26:27,523 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 18:26:27,523 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1072824765] [2020-09-24 18:26:27,523 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 18:26:27,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:26:27,602 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:26:27,878 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:26:28,251 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:26:29,620 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:26:30,138 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:26:30,919 FATAL L256 erpolLogProxyWrapper]: Now shrinking...