/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 SequenceOfStatements --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=NARROWEST --traceabstraction.additional.smt.options log-additional-information=true --traceabstraction.additional.smt.options unknown-allowed=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem03_label58.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-13 06:28:36,670 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-13 06:28:36,673 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-13 06:28:36,713 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-13 06:28:36,714 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-13 06:28:36,723 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-13 06:28:36,725 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-13 06:28:36,729 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-13 06:28:36,731 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-13 06:28:36,732 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-13 06:28:36,733 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-13 06:28:36,735 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-13 06:28:36,735 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-13 06:28:36,738 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-13 06:28:36,740 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-13 06:28:36,743 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-13 06:28:36,744 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-13 06:28:36,747 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-13 06:28:36,750 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-13 06:28:36,754 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-13 06:28:36,756 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-13 06:28:36,761 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-13 06:28:36,762 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-13 06:28:36,763 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-13 06:28:36,768 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-13 06:28:36,769 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-13 06:28:36,769 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-13 06:28:36,772 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-13 06:28:36,773 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-13 06:28:36,774 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-13 06:28:36,774 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-13 06:28:36,775 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-13 06:28:36,775 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-13 06:28:36,776 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-13 06:28:36,777 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-13 06:28:36,777 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-13 06:28:36,779 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-13 06:28:36,779 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-13 06:28:36,779 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-13 06:28:36,780 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-13 06:28:36,781 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-13 06:28:36,782 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 [2020-10-13 06:28:36,829 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-13 06:28:36,830 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-13 06:28:36,832 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-13 06:28:36,832 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-13 06:28:36,832 INFO L138 SettingsManager]: * Use SBE=true [2020-10-13 06:28:36,833 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-13 06:28:36,833 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-13 06:28:36,833 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-13 06:28:36,833 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-13 06:28:36,834 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-13 06:28:36,835 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-13 06:28:36,835 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-13 06:28:36,835 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-13 06:28:36,836 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-13 06:28:36,836 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-13 06:28:36,836 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-13 06:28:36,836 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-13 06:28:36,836 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-13 06:28:36,837 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-13 06:28:36,837 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-13 06:28:36,837 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-13 06:28:36,837 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-13 06:28:36,837 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-13 06:28:36,838 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-13 06:28:36,838 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-13 06:28:36,838 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-13 06:28:36,838 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-13 06:28:36,838 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-13 06:28:36,839 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-13 06:28:36,839 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 -> SequenceOfStatements 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=NARROWEST;log-additional-information=true;unknown-allowed=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=NARROWEST;log-additional-information=true;unknown-allowed=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=NARROWEST;log-additional-information=true;unknown-allowed=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=NARROWEST;log-additional-information=true;unknown-allowed=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=NARROWEST;log-additional-information=true;unknown-allowed=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=NARROWEST;log-additional-information=true;unknown-allowed=true; [2020-10-13 06:28:37,132 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-13 06:28:37,145 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-13 06:28:37,148 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-13 06:28:37,150 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-13 06:28:37,150 INFO L275 PluginConnector]: CDTParser initialized [2020-10-13 06:28:37,151 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem03_label58.c [2020-10-13 06:28:37,219 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/0b5bf75a6/e642fd3058ca47c495a1a9bf93b3c1a7/FLAG36b995e03 [2020-10-13 06:28:37,902 INFO L306 CDTParser]: Found 1 translation units. [2020-10-13 06:28:37,905 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem03_label58.c [2020-10-13 06:28:37,929 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/0b5bf75a6/e642fd3058ca47c495a1a9bf93b3c1a7/FLAG36b995e03 [2020-10-13 06:28:38,015 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/0b5bf75a6/e642fd3058ca47c495a1a9bf93b3c1a7 [2020-10-13 06:28:38,025 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-13 06:28:38,026 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-13 06:28:38,027 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-13 06:28:38,027 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-13 06:28:38,030 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-13 06:28:38,031 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 06:28:38" (1/1) ... [2020-10-13 06:28:38,033 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@733bd7de and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:28:38, skipping insertion in model container [2020-10-13 06:28:38,033 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 06:28:38" (1/1) ... [2020-10-13 06:28:38,041 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-13 06:28:38,124 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-13 06:28:39,033 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-13 06:28:39,045 INFO L203 MainTranslator]: Completed pre-run [2020-10-13 06:28:39,397 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-13 06:28:39,419 INFO L208 MainTranslator]: Completed translation [2020-10-13 06:28:39,421 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:28:39 WrapperNode [2020-10-13 06:28:39,421 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-13 06:28:39,422 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-13 06:28:39,422 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-13 06:28:39,422 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-13 06:28:39,437 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:28:39" (1/1) ... [2020-10-13 06:28:39,438 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:28:39" (1/1) ... [2020-10-13 06:28:39,473 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:28:39" (1/1) ... [2020-10-13 06:28:39,474 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:28:39" (1/1) ... [2020-10-13 06:28:39,563 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:28:39" (1/1) ... [2020-10-13 06:28:39,595 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:28:39" (1/1) ... [2020-10-13 06:28:39,613 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:28:39" (1/1) ... [2020-10-13 06:28:39,629 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-13 06:28:39,630 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-13 06:28:39,630 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-13 06:28:39,630 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-13 06:28:39,632 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:28:39" (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 [2020-10-13 06:28:39,711 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-13 06:28:39,711 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-13 06:28:39,712 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-10-13 06:28:39,712 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-13 06:28:39,712 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-10-13 06:28:39,712 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-13 06:28:39,712 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-13 06:28:39,712 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-13 06:28:39,713 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-13 06:28:39,713 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-13 06:28:39,713 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-13 06:28:41,638 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-13 06:28:41,638 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-13 06:28:41,649 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 06:28:41 BoogieIcfgContainer [2020-10-13 06:28:41,650 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-13 06:28:41,653 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-13 06:28:41,653 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-13 06:28:41,657 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-13 06:28:41,657 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.10 06:28:38" (1/3) ... [2020-10-13 06:28:41,659 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@475a1bef and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 06:28:41, skipping insertion in model container [2020-10-13 06:28:41,660 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:28:39" (2/3) ... [2020-10-13 06:28:41,660 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@475a1bef and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 06:28:41, skipping insertion in model container [2020-10-13 06:28:41,661 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 06:28:41" (3/3) ... [2020-10-13 06:28:41,665 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem03_label58.c [2020-10-13 06:28:41,681 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-13 06:28:41,696 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-13 06:28:41,717 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-13 06:28:41,760 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-13 06:28:41,761 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-13 06:28:41,761 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-13 06:28:41,761 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-13 06:28:41,761 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-13 06:28:41,762 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-13 06:28:41,762 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-13 06:28:41,762 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-13 06:28:41,803 INFO L276 IsEmpty]: Start isEmpty. Operand 311 states. [2020-10-13 06:28:41,826 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 167 [2020-10-13 06:28:41,827 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 06:28:41,828 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 06:28:41,829 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 06:28:41,835 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 06:28:41,837 INFO L82 PathProgramCache]: Analyzing trace with hash 321643717, now seen corresponding path program 1 times [2020-10-13 06:28:41,847 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 06:28:41,847 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1174836950] [2020-10-13 06:28:41,848 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 06:28:42,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:28:42,487 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:28:42,878 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:28:46,197 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:28:46,198 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 174 [2020-10-13 06:28:46,198 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 06:28:46,198 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3851 [2020-10-13 06:28:46,201 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:28:46,202 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-10-13 06:28:46,202 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-13 06:28:46,202 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 124 [2020-10-13 06:28:46,202 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-13 06:28:47,335 WARN L193 SmtUtils]: Spent 178.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 74 [2020-10-13 06:28:47,682 WARN L193 SmtUtils]: Spent 315.00 ms on a formula simplification. DAG size of input: 88 DAG size of output: 68 [2020-10-13 06:28:48,218 WARN L193 SmtUtils]: Spent 146.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-13 06:28:48,220 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 06:28:48,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:28:48,234 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:28:48,259 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:28:48,260 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 06:28:48,260 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:28:48,260 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 29 [2020-10-13 06:28:48,261 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:28:48,261 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 06:28:48,261 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 06:28:48,261 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-13 06:28:48,262 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:28:49,028 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 06:28:49,029 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1174836950] [2020-10-13 06:28:49,031 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 06:28:49,031 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2020-10-13 06:28:49,032 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1958229439] [2020-10-13 06:28:49,038 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-13 06:28:49,039 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 06:28:49,053 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-13 06:28:49,054 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=110, Unknown=0, NotChecked=0, Total=132 [2020-10-13 06:28:49,057 INFO L87 Difference]: Start difference. First operand 311 states. Second operand 12 states. [2020-10-13 06:28:49,409 WARN L193 SmtUtils]: Spent 248.00 ms on a formula simplification that was a NOOP. DAG size: 153 [2020-10-13 06:28:50,016 WARN L193 SmtUtils]: Spent 533.00 ms on a formula simplification. DAG size of input: 169 DAG size of output: 166 [2020-10-13 06:28:50,587 WARN L193 SmtUtils]: Spent 507.00 ms on a formula simplification. DAG size of input: 169 DAG size of output: 166 [2020-10-13 06:28:51,239 WARN L193 SmtUtils]: Spent 572.00 ms on a formula simplification. DAG size of input: 182 DAG size of output: 174 [2020-10-13 06:28:52,228 WARN L193 SmtUtils]: Spent 875.00 ms on a formula simplification. DAG size of input: 195 DAG size of output: 173 [2020-10-13 06:28:53,455 WARN L193 SmtUtils]: Spent 908.00 ms on a formula simplification. DAG size of input: 195 DAG size of output: 172 [2020-10-13 06:28:54,799 WARN L193 SmtUtils]: Spent 884.00 ms on a formula simplification. DAG size of input: 198 DAG size of output: 171 [2020-10-13 06:28:57,826 WARN L193 SmtUtils]: Spent 930.00 ms on a formula simplification. DAG size of input: 199 DAG size of output: 170 [2020-10-13 06:28:58,925 WARN L193 SmtUtils]: Spent 858.00 ms on a formula simplification. DAG size of input: 205 DAG size of output: 169 [2020-10-13 06:29:01,529 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 06:29:01,529 INFO L93 Difference]: Finished difference Result 737 states and 1287 transitions. [2020-10-13 06:29:01,530 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-13 06:29:01,532 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 166 [2020-10-13 06:29:01,533 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 06:29:01,567 INFO L225 Difference]: With dead ends: 737 [2020-10-13 06:29:01,567 INFO L226 Difference]: Without dead ends: 364 [2020-10-13 06:29:01,575 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 8.0s TimeCoverageRelationStatistics Valid=116, Invalid=304, Unknown=0, NotChecked=0, Total=420 [2020-10-13 06:29:01,596 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 364 states. [2020-10-13 06:29:01,647 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 364 to 364. [2020-10-13 06:29:01,648 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 364 states. [2020-10-13 06:29:01,651 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 364 states to 364 states and 525 transitions. [2020-10-13 06:29:01,653 INFO L78 Accepts]: Start accepts. Automaton has 364 states and 525 transitions. Word has length 166 [2020-10-13 06:29:01,654 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 06:29:01,654 INFO L479 AbstractCegarLoop]: Abstraction has 364 states and 525 transitions. [2020-10-13 06:29:01,654 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-13 06:29:01,654 INFO L276 IsEmpty]: Start isEmpty. Operand 364 states and 525 transitions. [2020-10-13 06:29:01,660 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2020-10-13 06:29:01,660 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 06:29:01,660 INFO L422 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 06:29:01,661 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-13 06:29:01,661 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 06:29:01,661 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 06:29:01,662 INFO L82 PathProgramCache]: Analyzing trace with hash -1168220610, now seen corresponding path program 1 times [2020-10-13 06:29:01,662 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 06:29:01,662 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [810407120] [2020-10-13 06:29:01,662 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 06:29:01,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:29:01,837 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:29:02,468 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:29:05,816 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:29:05,817 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 187 [2020-10-13 06:29:05,818 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 06:29:05,818 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4048 [2020-10-13 06:29:05,818 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:29:05,819 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 17 [2020-10-13 06:29:05,822 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-13 06:29:05,823 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 163 [2020-10-13 06:29:05,823 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-10-13 06:29:06,424 WARN L193 SmtUtils]: Spent 114.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 70 [2020-10-13 06:29:06,551 WARN L193 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 70 [2020-10-13 06:29:06,689 WARN L193 SmtUtils]: Spent 114.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 70 [2020-10-13 06:29:06,828 WARN L193 SmtUtils]: Spent 121.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 70 [2020-10-13 06:29:06,971 WARN L193 SmtUtils]: Spent 116.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 69 [2020-10-13 06:29:07,288 WARN L193 SmtUtils]: Spent 107.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-13 06:29:07,289 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 06:29:07,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:29:07,302 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:29:07,319 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:29:07,320 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 06:29:07,320 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:29:07,320 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-10-13 06:29:07,321 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:29:07,321 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 06:29:07,321 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 06:29:07,321 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-13 06:29:07,321 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:29:07,586 WARN L193 SmtUtils]: Spent 103.00 ms on a formula simplification that was a NOOP. DAG size: 88 [2020-10-13 06:29:07,587 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 06:29:07,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:29:07,603 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:29:07,668 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:29:07,668 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-13 06:29:07,668 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:29:07,668 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 69 [2020-10-13 06:29:07,669 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:29:07,669 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-13 06:29:07,669 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 06:29:07,669 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-13 06:29:07,669 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:29:07,897 WARN L193 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 66 [2020-10-13 06:29:08,458 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 06:29:08,458 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [810407120] [2020-10-13 06:29:08,459 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 06:29:08,459 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2020-10-13 06:29:08,459 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [191444310] [2020-10-13 06:29:08,461 INFO L459 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-13 06:29:08,461 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 06:29:08,462 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-13 06:29:08,462 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=236, Unknown=0, NotChecked=0, Total=272 [2020-10-13 06:29:08,462 INFO L87 Difference]: Start difference. First operand 364 states and 525 transitions. Second operand 17 states. [2020-10-13 06:29:08,730 WARN L193 SmtUtils]: Spent 178.00 ms on a formula simplification that was a NOOP. DAG size: 144 [2020-10-13 06:29:09,282 WARN L193 SmtUtils]: Spent 409.00 ms on a formula simplification. DAG size of input: 117 DAG size of output: 89 [2020-10-13 06:29:09,601 WARN L193 SmtUtils]: Spent 227.00 ms on a formula simplification. DAG size of input: 95 DAG size of output: 79 [2020-10-13 06:29:09,957 WARN L193 SmtUtils]: Spent 275.00 ms on a formula simplification. DAG size of input: 109 DAG size of output: 92 [2020-10-13 06:29:10,585 WARN L193 SmtUtils]: Spent 552.00 ms on a formula simplification. DAG size of input: 187 DAG size of output: 170 [2020-10-13 06:29:11,251 WARN L193 SmtUtils]: Spent 603.00 ms on a formula simplification. DAG size of input: 196 DAG size of output: 178 [2020-10-13 06:29:12,308 WARN L193 SmtUtils]: Spent 880.00 ms on a formula simplification. DAG size of input: 201 DAG size of output: 177 [2020-10-13 06:29:14,026 WARN L193 SmtUtils]: Spent 857.00 ms on a formula simplification. DAG size of input: 204 DAG size of output: 176 [2020-10-13 06:29:16,253 WARN L193 SmtUtils]: Spent 839.00 ms on a formula simplification. DAG size of input: 205 DAG size of output: 175 [2020-10-13 06:29:19,141 WARN L193 SmtUtils]: Spent 635.00 ms on a formula simplification. DAG size of input: 206 DAG size of output: 174 [2020-10-13 06:29:19,969 WARN L193 SmtUtils]: Spent 597.00 ms on a formula simplification. DAG size of input: 206 DAG size of output: 172 [2020-10-13 06:29:24,198 WARN L193 SmtUtils]: Spent 119.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 52 [2020-10-13 06:29:24,389 WARN L193 SmtUtils]: Spent 163.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 65 [2020-10-13 06:29:24,451 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 06:29:24,451 INFO L93 Difference]: Finished difference Result 983 states and 1596 transitions. [2020-10-13 06:29:24,452 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2020-10-13 06:29:24,453 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 177 [2020-10-13 06:29:24,454 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 06:29:24,461 INFO L225 Difference]: With dead ends: 983 [2020-10-13 06:29:24,461 INFO L226 Difference]: Without dead ends: 740 [2020-10-13 06:29:24,464 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 75 ImplicationChecksByTransitivity, 8.4s TimeCoverageRelationStatistics Valid=239, Invalid=691, Unknown=0, NotChecked=0, Total=930 [2020-10-13 06:29:24,466 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 740 states. [2020-10-13 06:29:24,516 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 740 to 720. [2020-10-13 06:29:24,516 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 720 states. [2020-10-13 06:29:24,520 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 720 states to 720 states and 955 transitions. [2020-10-13 06:29:24,521 INFO L78 Accepts]: Start accepts. Automaton has 720 states and 955 transitions. Word has length 177 [2020-10-13 06:29:24,521 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 06:29:24,521 INFO L479 AbstractCegarLoop]: Abstraction has 720 states and 955 transitions. [2020-10-13 06:29:24,522 INFO L480 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-13 06:29:24,522 INFO L276 IsEmpty]: Start isEmpty. Operand 720 states and 955 transitions. [2020-10-13 06:29:24,527 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 188 [2020-10-13 06:29:24,527 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 06:29:24,528 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 06:29:24,528 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-13 06:29:24,528 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 06:29:24,528 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 06:29:24,529 INFO L82 PathProgramCache]: Analyzing trace with hash 2134429066, now seen corresponding path program 1 times [2020-10-13 06:29:24,529 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 06:29:24,529 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [218968467] [2020-10-13 06:29:24,529 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 06:29:24,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:29:24,665 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:29:24,899 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:29:26,302 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:29:26,302 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 197 [2020-10-13 06:29:26,303 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 06:29:26,303 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1694 [2020-10-13 06:29:26,303 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:29:26,303 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 06:29:26,303 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 31 [2020-10-13 06:29:26,303 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 165 [2020-10-13 06:29:26,303 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:29:26,569 WARN L193 SmtUtils]: Spent 148.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-13 06:29:26,570 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 06:29:26,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:29:26,578 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:29:26,589 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:29:26,589 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 06:29:26,590 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:29:26,590 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-13 06:29:26,590 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:29:26,591 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 06:29:26,591 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 06:29:26,592 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 06:29:26,592 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 06:29:26,696 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 06:29:26,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:29:26,720 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:29:26,766 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:29:26,766 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-13 06:29:26,767 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:29:26,767 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 55 [2020-10-13 06:29:26,767 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:29:26,768 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 06:29:26,768 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 06:29:26,768 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-13 06:29:26,768 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 06:29:26,873 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 17 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 06:29:26,873 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [218968467] [2020-10-13 06:29:26,874 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 06:29:26,874 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-13 06:29:26,874 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [193870845] [2020-10-13 06:29:26,875 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 06:29:26,875 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 06:29:26,875 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 06:29:26,876 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-13 06:29:26,876 INFO L87 Difference]: Start difference. First operand 720 states and 955 transitions. Second operand 5 states. [2020-10-13 06:29:27,258 WARN L193 SmtUtils]: Spent 163.00 ms on a formula simplification that was a NOOP. DAG size: 129 [2020-10-13 06:29:29,974 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 06:29:29,974 INFO L93 Difference]: Finished difference Result 1186 states and 1723 transitions. [2020-10-13 06:29:29,977 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 06:29:29,978 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 187 [2020-10-13 06:29:29,978 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 06:29:29,984 INFO L225 Difference]: With dead ends: 1186 [2020-10-13 06:29:29,984 INFO L226 Difference]: Without dead ends: 941 [2020-10-13 06:29:29,985 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-13 06:29:29,987 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 941 states. [2020-10-13 06:29:30,018 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 941 to 935. [2020-10-13 06:29:30,018 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 935 states. [2020-10-13 06:29:30,023 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 935 states to 935 states and 1215 transitions. [2020-10-13 06:29:30,023 INFO L78 Accepts]: Start accepts. Automaton has 935 states and 1215 transitions. Word has length 187 [2020-10-13 06:29:30,024 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 06:29:30,024 INFO L479 AbstractCegarLoop]: Abstraction has 935 states and 1215 transitions. [2020-10-13 06:29:30,024 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 06:29:30,024 INFO L276 IsEmpty]: Start isEmpty. Operand 935 states and 1215 transitions. [2020-10-13 06:29:30,028 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 212 [2020-10-13 06:29:30,028 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 06:29:30,029 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1] [2020-10-13 06:29:30,029 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-13 06:29:30,029 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 06:29:30,030 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 06:29:30,030 INFO L82 PathProgramCache]: Analyzing trace with hash -948383074, now seen corresponding path program 1 times [2020-10-13 06:29:30,030 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 06:29:30,030 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1630655179] [2020-10-13 06:29:30,030 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 06:29:30,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:29:30,138 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:29:30,355 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:29:31,307 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:29:31,543 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:29:33,963 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:29:34,211 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:29:34,211 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 223 [2020-10-13 06:29:34,212 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-13 06:29:34,212 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4099 [2020-10-13 06:29:34,212 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:29:34,212 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 06:29:34,212 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 31 [2020-10-13 06:29:34,213 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 25 [2020-10-13 06:29:34,213 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:29:34,391 WARN L193 SmtUtils]: Spent 114.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-13 06:29:34,392 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 06:29:34,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:29:34,399 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:29:34,405 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:29:34,406 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 06:29:34,406 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:29:34,406 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-13 06:29:34,406 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:29:34,407 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 06:29:34,407 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 06:29:34,407 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 06:29:34,408 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 06:29:34,541 WARN L193 SmtUtils]: Spent 122.00 ms on a formula simplification that was a NOOP. DAG size: 88 [2020-10-13 06:29:34,542 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 06:29:34,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:29:34,560 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:29:34,593 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:29:34,593 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-13 06:29:34,593 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:29:34,594 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 38 [2020-10-13 06:29:34,594 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:29:34,594 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 06:29:34,594 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 06:29:34,594 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-13 06:29:34,595 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:29:34,603 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-10-13 06:29:34,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:29:34,620 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:29:34,679 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:29:34,679 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-10-13 06:29:34,679 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:29:34,679 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 65 [2020-10-13 06:29:34,679 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:29:34,680 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 06:29:34,680 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 06:29:34,680 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 25 [2020-10-13 06:29:34,680 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:29:34,808 INFO L134 CoverageAnalysis]: Checked inductivity of 58 backedges. 55 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-13 06:29:34,809 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1630655179] [2020-10-13 06:29:34,809 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 06:29:34,809 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-13 06:29:34,810 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [456437105] [2020-10-13 06:29:34,811 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-13 06:29:34,811 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 06:29:34,811 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-13 06:29:34,811 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-13 06:29:34,812 INFO L87 Difference]: Start difference. First operand 935 states and 1215 transitions. Second operand 7 states. [2020-10-13 06:29:34,947 WARN L193 SmtUtils]: Spent 109.00 ms on a formula simplification that was a NOOP. DAG size: 130 [2020-10-13 06:29:36,548 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 06:29:36,549 INFO L93 Difference]: Finished difference Result 1379 states and 1851 transitions. [2020-10-13 06:29:36,550 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 06:29:36,550 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 211 [2020-10-13 06:29:36,550 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 06:29:36,555 INFO L225 Difference]: With dead ends: 1379 [2020-10-13 06:29:36,555 INFO L226 Difference]: Without dead ends: 919 [2020-10-13 06:29:36,557 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2020-10-13 06:29:36,559 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 919 states. [2020-10-13 06:29:36,583 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 919 to 915. [2020-10-13 06:29:36,583 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 915 states. [2020-10-13 06:29:36,587 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 915 states to 915 states and 1157 transitions. [2020-10-13 06:29:36,588 INFO L78 Accepts]: Start accepts. Automaton has 915 states and 1157 transitions. Word has length 211 [2020-10-13 06:29:36,588 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 06:29:36,588 INFO L479 AbstractCegarLoop]: Abstraction has 915 states and 1157 transitions. [2020-10-13 06:29:36,588 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-13 06:29:36,588 INFO L276 IsEmpty]: Start isEmpty. Operand 915 states and 1157 transitions. [2020-10-13 06:29:36,592 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 233 [2020-10-13 06:29:36,592 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 06:29:36,592 INFO L422 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 06:29:36,593 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-13 06:29:36,593 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 06:29:36,593 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 06:29:36,593 INFO L82 PathProgramCache]: Analyzing trace with hash 1367861518, now seen corresponding path program 1 times [2020-10-13 06:29:36,594 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 06:29:36,594 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [259087949] [2020-10-13 06:29:36,594 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 06:29:36,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:29:36,677 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:29:36,790 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:29:37,989 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:29:39,887 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:29:39,887 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 244 [2020-10-13 06:29:39,887 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-13 06:29:39,887 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3244 [2020-10-13 06:29:39,888 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:29:39,888 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 06:29:39,888 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 31 [2020-10-13 06:29:39,888 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 48 [2020-10-13 06:29:39,888 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:29:40,037 WARN L193 SmtUtils]: Spent 102.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-13 06:29:40,038 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 06:29:40,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:29:40,043 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:29:40,049 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:29:40,049 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 06:29:40,049 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:29:40,050 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-13 06:29:40,050 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:29:40,050 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 06:29:40,050 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 06:29:40,051 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 06:29:40,051 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:29:40,122 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 06:29:40,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:29:40,134 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:29:40,158 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:29:40,158 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-13 06:29:40,158 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:29:40,158 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 27 [2020-10-13 06:29:40,158 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:29:40,159 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 06:29:40,159 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 06:29:40,159 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-13 06:29:40,159 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:29:40,165 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-10-13 06:29:40,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:29:40,189 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:29:40,261 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:29:40,261 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 46 [2020-10-13 06:29:40,262 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:29:40,262 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 79 [2020-10-13 06:29:40,262 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:29:40,262 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 06:29:40,262 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 06:29:40,262 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 46 [2020-10-13 06:29:40,262 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:29:40,355 INFO L134 CoverageAnalysis]: Checked inductivity of 81 backedges. 78 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-13 06:29:40,356 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [259087949] [2020-10-13 06:29:40,356 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 06:29:40,356 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-13 06:29:40,356 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [627338597] [2020-10-13 06:29:40,357 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-13 06:29:40,357 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 06:29:40,357 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-13 06:29:40,358 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-13 06:29:40,358 INFO L87 Difference]: Start difference. First operand 915 states and 1157 transitions. Second operand 7 states. [2020-10-13 06:29:40,649 WARN L193 SmtUtils]: Spent 115.00 ms on a formula simplification that was a NOOP. DAG size: 130 [2020-10-13 06:29:41,686 WARN L193 SmtUtils]: Spent 114.00 ms on a formula simplification that was a NOOP. DAG size: 129 [2020-10-13 06:29:44,761 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 06:29:44,761 INFO L93 Difference]: Finished difference Result 2965 states and 3958 transitions. [2020-10-13 06:29:44,761 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-13 06:29:44,762 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 232 [2020-10-13 06:29:44,762 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 06:29:44,776 INFO L225 Difference]: With dead ends: 2965 [2020-10-13 06:29:44,776 INFO L226 Difference]: Without dead ends: 2171 [2020-10-13 06:29:44,779 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-13 06:29:44,782 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2171 states. [2020-10-13 06:29:44,858 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2171 to 2061. [2020-10-13 06:29:44,858 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2061 states. [2020-10-13 06:29:44,866 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2061 states to 2061 states and 2591 transitions. [2020-10-13 06:29:44,867 INFO L78 Accepts]: Start accepts. Automaton has 2061 states and 2591 transitions. Word has length 232 [2020-10-13 06:29:44,867 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 06:29:44,867 INFO L479 AbstractCegarLoop]: Abstraction has 2061 states and 2591 transitions. [2020-10-13 06:29:44,867 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-13 06:29:44,867 INFO L276 IsEmpty]: Start isEmpty. Operand 2061 states and 2591 transitions. [2020-10-13 06:29:44,874 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 254 [2020-10-13 06:29:44,874 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 06:29:44,875 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 06:29:44,875 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-13 06:29:44,875 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 06:29:44,875 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 06:29:44,876 INFO L82 PathProgramCache]: Analyzing trace with hash 1633952877, now seen corresponding path program 1 times [2020-10-13 06:29:44,876 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 06:29:44,876 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1897201032] [2020-10-13 06:29:44,876 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 06:29:44,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:29:44,970 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:29:45,070 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:29:46,976 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:29:47,184 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:29:49,959 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:29:49,960 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 267 [2020-10-13 06:29:49,960 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 06:29:49,960 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5026 [2020-10-13 06:29:49,960 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:29:49,960 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 06:29:49,960 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 89 [2020-10-13 06:29:49,961 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-13 06:29:49,961 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:29:50,120 WARN L193 SmtUtils]: Spent 105.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-13 06:29:50,121 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 06:29:50,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:29:50,125 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:29:50,130 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:29:50,130 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 06:29:50,130 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:29:50,130 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-13 06:29:50,130 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:29:50,130 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 06:29:50,131 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 06:29:50,131 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 06:29:50,131 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:29:50,201 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 06:29:50,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:29:50,207 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:29:50,219 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:29:50,220 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-10-13 06:29:50,220 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:29:50,220 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-13 06:29:50,220 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:29:50,220 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 06:29:50,220 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 06:29:50,220 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 06:29:50,220 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:29:50,272 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-10-13 06:29:50,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:29:50,302 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:29:50,345 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:29:50,345 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 46 [2020-10-13 06:29:50,345 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:29:50,345 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 52 [2020-10-13 06:29:50,345 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:29:50,346 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 06:29:50,346 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 06:29:50,346 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 40 [2020-10-13 06:29:50,346 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:29:50,356 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2020-10-13 06:29:50,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:29:50,361 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:29:50,371 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:29:50,372 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-13 06:29:50,372 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:29:50,372 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-13 06:29:50,372 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:29:50,372 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 06:29:50,372 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 06:29:50,372 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-13 06:29:50,373 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:29:50,432 INFO L134 CoverageAnalysis]: Checked inductivity of 124 backedges. 91 proven. 2 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2020-10-13 06:29:50,433 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1897201032] [2020-10-13 06:29:50,433 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 06:29:50,433 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-13 06:29:50,433 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2119544258] [2020-10-13 06:29:50,434 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-13 06:29:50,434 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 06:29:50,434 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-13 06:29:50,435 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-13 06:29:50,435 INFO L87 Difference]: Start difference. First operand 2061 states and 2591 transitions. Second operand 7 states. [2020-10-13 06:29:50,805 WARN L193 SmtUtils]: Spent 107.00 ms on a formula simplification that was a NOOP. DAG size: 130 [2020-10-13 06:29:51,387 WARN L193 SmtUtils]: Spent 106.00 ms on a formula simplification that was a NOOP. DAG size: 129 [2020-10-13 06:29:55,373 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 06:29:55,374 INFO L93 Difference]: Finished difference Result 6138 states and 8514 transitions. [2020-10-13 06:29:55,374 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-13 06:29:55,374 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 253 [2020-10-13 06:29:55,375 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 06:29:55,402 INFO L225 Difference]: With dead ends: 6138 [2020-10-13 06:29:55,402 INFO L226 Difference]: Without dead ends: 4835 [2020-10-13 06:29:55,408 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-13 06:29:55,413 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4835 states. [2020-10-13 06:29:55,551 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4835 to 4743. [2020-10-13 06:29:55,551 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4743 states. [2020-10-13 06:29:55,574 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4743 states to 4743 states and 6247 transitions. [2020-10-13 06:29:55,575 INFO L78 Accepts]: Start accepts. Automaton has 4743 states and 6247 transitions. Word has length 253 [2020-10-13 06:29:55,575 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 06:29:55,575 INFO L479 AbstractCegarLoop]: Abstraction has 4743 states and 6247 transitions. [2020-10-13 06:29:55,575 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-13 06:29:55,575 INFO L276 IsEmpty]: Start isEmpty. Operand 4743 states and 6247 transitions. [2020-10-13 06:29:55,593 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 260 [2020-10-13 06:29:55,594 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 06:29:55,594 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 06:29:55,594 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-13 06:29:55,594 INFO L427 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 06:29:55,595 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 06:29:55,595 INFO L82 PathProgramCache]: Analyzing trace with hash -1867487494, now seen corresponding path program 1 times [2020-10-13 06:29:55,595 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 06:29:55,595 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [525538067] [2020-10-13 06:29:55,595 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 06:29:55,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:29:55,702 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:29:55,811 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:29:57,880 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:30:00,697 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:30:00,697 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 273 [2020-10-13 06:30:00,697 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-13 06:30:00,697 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5037 [2020-10-13 06:30:00,698 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:30:00,698 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-13 06:30:00,698 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-13 06:30:00,698 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 38 [2020-10-13 06:30:00,698 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:30:00,844 WARN L193 SmtUtils]: Spent 110.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-13 06:30:00,845 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 06:30:00,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:30:00,853 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:30:00,859 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:30:00,859 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 06:30:00,859 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:30:00,859 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-13 06:30:00,860 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:30:00,860 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 06:30:00,860 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 06:30:00,860 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-13 06:30:00,860 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:30:00,936 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 06:30:00,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:30:00,951 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:30:00,999 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:30:00,999 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-10-13 06:30:00,999 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:30:00,999 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 53 [2020-10-13 06:30:01,000 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:30:01,000 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 06:30:01,000 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 06:30:01,000 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 33 [2020-10-13 06:30:01,000 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:30:01,032 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-10-13 06:30:01,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:30:01,050 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:30:01,069 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:30:01,070 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 46 [2020-10-13 06:30:01,070 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:30:01,070 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 25 [2020-10-13 06:30:01,070 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:30:01,071 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 06:30:01,071 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 43 [2020-10-13 06:30:01,071 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 06:30:01,071 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:30:01,123 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2020-10-13 06:30:01,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:30:01,146 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:30:01,152 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:30:01,152 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-10-13 06:30:01,152 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:30:01,153 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-13 06:30:01,153 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:30:01,153 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 06:30:01,153 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-10-13 06:30:01,153 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 06:30:01,153 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:30:01,208 INFO L134 CoverageAnalysis]: Checked inductivity of 148 backedges. 84 proven. 38 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2020-10-13 06:30:01,209 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [525538067] [2020-10-13 06:30:01,209 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 06:30:01,209 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-13 06:30:01,209 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2103234613] [2020-10-13 06:30:01,210 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-13 06:30:01,210 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 06:30:01,210 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-13 06:30:01,210 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-13 06:30:01,211 INFO L87 Difference]: Start difference. First operand 4743 states and 6247 transitions. Second operand 7 states. [2020-10-13 06:30:01,359 WARN L193 SmtUtils]: Spent 118.00 ms on a formula simplification that was a NOOP. DAG size: 131 [2020-10-13 06:30:02,381 WARN L193 SmtUtils]: Spent 112.00 ms on a formula simplification that was a NOOP. DAG size: 132 [2020-10-13 06:30:04,505 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 06:30:04,506 INFO L93 Difference]: Finished difference Result 11674 states and 15936 transitions. [2020-10-13 06:30:04,508 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-13 06:30:04,509 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 259 [2020-10-13 06:30:04,509 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 06:30:04,543 INFO L225 Difference]: With dead ends: 11674 [2020-10-13 06:30:04,543 INFO L226 Difference]: Without dead ends: 7118 [2020-10-13 06:30:04,560 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-13 06:30:04,567 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7118 states. [2020-10-13 06:30:04,730 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7118 to 7018. [2020-10-13 06:30:04,731 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7018 states. [2020-10-13 06:30:04,747 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7018 states to 7018 states and 9240 transitions. [2020-10-13 06:30:04,748 INFO L78 Accepts]: Start accepts. Automaton has 7018 states and 9240 transitions. Word has length 259 [2020-10-13 06:30:04,748 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 06:30:04,748 INFO L479 AbstractCegarLoop]: Abstraction has 7018 states and 9240 transitions. [2020-10-13 06:30:04,748 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-13 06:30:04,748 INFO L276 IsEmpty]: Start isEmpty. Operand 7018 states and 9240 transitions. [2020-10-13 06:30:04,764 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 265 [2020-10-13 06:30:04,764 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 06:30:04,765 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 06:30:04,765 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-13 06:30:04,765 INFO L427 AbstractCegarLoop]: === Iteration 8 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 06:30:04,765 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 06:30:04,766 INFO L82 PathProgramCache]: Analyzing trace with hash -1895840882, now seen corresponding path program 1 times [2020-10-13 06:30:04,766 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 06:30:04,766 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [597612566] [2020-10-13 06:30:04,766 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 06:30:04,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:30:04,842 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:30:04,919 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:30:05,520 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:30:07,226 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:30:09,842 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:30:09,842 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 280 [2020-10-13 06:30:09,843 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 06:30:09,843 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5027 [2020-10-13 06:30:09,843 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:30:09,843 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 06:30:09,843 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 31 [2020-10-13 06:30:09,844 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 19 [2020-10-13 06:30:09,844 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:30:09,994 WARN L193 SmtUtils]: Spent 102.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-13 06:30:09,994 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 06:30:09,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:30:09,999 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:30:10,004 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:30:10,004 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 06:30:10,005 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:30:10,005 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-13 06:30:10,005 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:30:10,005 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 06:30:10,005 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 06:30:10,005 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 06:30:10,005 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:30:10,074 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 06:30:10,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:30:10,092 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:30:10,109 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:30:10,109 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-13 06:30:10,110 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:30:10,110 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-10-13 06:30:10,110 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:30:10,110 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 06:30:10,110 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 06:30:10,110 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-13 06:30:10,110 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:30:10,124 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-10-13 06:30:10,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:30:10,134 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:30:10,160 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:30:10,160 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-10-13 06:30:10,160 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:30:10,160 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 29 [2020-10-13 06:30:10,161 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:30:10,161 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 06:30:10,161 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 06:30:10,161 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-10-13 06:30:10,161 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:30:10,250 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2020-10-13 06:30:10,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:30:10,268 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:30:10,288 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:30:10,289 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 46 [2020-10-13 06:30:10,289 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:30:10,289 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 26 [2020-10-13 06:30:10,289 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:30:10,289 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 06:30:10,290 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 43 [2020-10-13 06:30:10,290 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 06:30:10,290 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:30:10,300 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2020-10-13 06:30:10,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:30:10,311 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:30:10,323 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:30:10,323 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-10-13 06:30:10,323 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:30:10,324 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-13 06:30:10,324 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:30:10,324 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 06:30:10,324 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-10-13 06:30:10,324 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 06:30:10,325 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:30:10,513 INFO L134 CoverageAnalysis]: Checked inductivity of 187 backedges. 107 proven. 28 refuted. 0 times theorem prover too weak. 52 trivial. 0 not checked. [2020-10-13 06:30:10,514 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [597612566] [2020-10-13 06:30:10,514 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 06:30:10,514 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-13 06:30:10,514 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1681524800] [2020-10-13 06:30:10,515 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-13 06:30:10,515 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 06:30:10,515 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-13 06:30:10,515 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-13 06:30:10,516 INFO L87 Difference]: Start difference. First operand 7018 states and 9240 transitions. Second operand 7 states. [2020-10-13 06:30:10,822 WARN L193 SmtUtils]: Spent 109.00 ms on a formula simplification that was a NOOP. DAG size: 130 [2020-10-13 06:30:12,018 WARN L193 SmtUtils]: Spent 117.00 ms on a formula simplification that was a NOOP. DAG size: 133 [2020-10-13 06:30:13,680 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 06:30:13,680 INFO L93 Difference]: Finished difference Result 18794 states and 27400 transitions. [2020-10-13 06:30:13,681 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-13 06:30:13,681 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 264 [2020-10-13 06:30:13,681 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 06:30:13,750 INFO L225 Difference]: With dead ends: 18794 [2020-10-13 06:30:13,751 INFO L226 Difference]: Without dead ends: 12526 [2020-10-13 06:30:13,773 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 12 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2020-10-13 06:30:13,786 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12526 states. [2020-10-13 06:30:14,145 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12526 to 12151. [2020-10-13 06:30:14,145 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12151 states. [2020-10-13 06:30:14,175 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12151 states to 12151 states and 15817 transitions. [2020-10-13 06:30:14,175 INFO L78 Accepts]: Start accepts. Automaton has 12151 states and 15817 transitions. Word has length 264 [2020-10-13 06:30:14,175 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 06:30:14,175 INFO L479 AbstractCegarLoop]: Abstraction has 12151 states and 15817 transitions. [2020-10-13 06:30:14,176 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-13 06:30:14,176 INFO L276 IsEmpty]: Start isEmpty. Operand 12151 states and 15817 transitions. [2020-10-13 06:30:14,211 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 283 [2020-10-13 06:30:14,211 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 06:30:14,211 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 06:30:14,212 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-13 06:30:14,212 INFO L427 AbstractCegarLoop]: === Iteration 9 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 06:30:14,212 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 06:30:14,212 INFO L82 PathProgramCache]: Analyzing trace with hash 1902287863, now seen corresponding path program 1 times [2020-10-13 06:30:14,212 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 06:30:14,213 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1870044435] [2020-10-13 06:30:14,213 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 06:30:14,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:30:14,374 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:30:14,617 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:30:15,183 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:30:16,405 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:30:16,600 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:30:18,244 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:30:18,244 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 294 [2020-10-13 06:30:18,244 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-13 06:30:18,245 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3935 [2020-10-13 06:30:18,245 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:30:18,245 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 06:30:18,245 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 116 [2020-10-13 06:30:18,245 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-10-13 06:30:18,245 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:30:18,389 WARN L193 SmtUtils]: Spent 103.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-13 06:30:18,390 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 06:30:18,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:30:18,395 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:30:18,398 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:30:18,398 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 06:30:18,398 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:30:18,399 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-13 06:30:18,399 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:30:18,399 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 06:30:18,399 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 06:30:18,399 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 06:30:18,399 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:30:18,471 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 06:30:18,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:30:18,517 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:30:18,600 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:30:18,600 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 107 [2020-10-13 06:30:18,601 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:30:18,601 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 99 [2020-10-13 06:30:18,601 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:30:18,601 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 06:30:18,601 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 06:30:18,602 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 101 [2020-10-13 06:30:18,602 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:30:18,648 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2020-10-13 06:30:18,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:30:18,657 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:30:18,686 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:30:18,686 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-13 06:30:18,686 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:30:18,686 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 32 [2020-10-13 06:30:18,687 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:30:18,687 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 06:30:18,687 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 06:30:18,687 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-13 06:30:18,687 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:30:18,790 INFO L134 CoverageAnalysis]: Checked inductivity of 120 backedges. 117 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-13 06:30:18,790 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1870044435] [2020-10-13 06:30:18,791 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 06:30:18,791 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-13 06:30:18,791 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [762085596] [2020-10-13 06:30:18,792 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-13 06:30:18,792 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 06:30:18,792 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-13 06:30:18,792 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-13 06:30:18,793 INFO L87 Difference]: Start difference. First operand 12151 states and 15817 transitions. Second operand 7 states. [2020-10-13 06:30:18,922 WARN L193 SmtUtils]: Spent 106.00 ms on a formula simplification that was a NOOP. DAG size: 129 [2020-10-13 06:30:20,287 WARN L193 SmtUtils]: Spent 109.00 ms on a formula simplification that was a NOOP. DAG size: 129 [2020-10-13 06:30:21,615 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 06:30:21,616 INFO L93 Difference]: Finished difference Result 29173 states and 40357 transitions. [2020-10-13 06:30:21,616 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-13 06:30:21,617 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 282 [2020-10-13 06:30:21,617 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 06:30:21,693 INFO L225 Difference]: With dead ends: 29173 [2020-10-13 06:30:21,693 INFO L226 Difference]: Without dead ends: 17209 [2020-10-13 06:30:21,740 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-13 06:30:21,762 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17209 states. [2020-10-13 06:30:22,119 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17209 to 16985. [2020-10-13 06:30:22,120 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16985 states. [2020-10-13 06:30:22,166 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16985 states to 16985 states and 21599 transitions. [2020-10-13 06:30:22,167 INFO L78 Accepts]: Start accepts. Automaton has 16985 states and 21599 transitions. Word has length 282 [2020-10-13 06:30:22,167 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 06:30:22,167 INFO L479 AbstractCegarLoop]: Abstraction has 16985 states and 21599 transitions. [2020-10-13 06:30:22,167 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-13 06:30:22,168 INFO L276 IsEmpty]: Start isEmpty. Operand 16985 states and 21599 transitions. [2020-10-13 06:30:22,209 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 290 [2020-10-13 06:30:22,209 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 06:30:22,210 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 06:30:22,210 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-13 06:30:22,210 INFO L427 AbstractCegarLoop]: === Iteration 10 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 06:30:22,210 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 06:30:22,210 INFO L82 PathProgramCache]: Analyzing trace with hash -7558983, now seen corresponding path program 1 times [2020-10-13 06:30:22,211 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 06:30:22,216 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1354059844] [2020-10-13 06:30:22,216 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 06:30:22,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:30:22,297 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:30:22,367 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:30:22,511 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:30:22,643 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:30:25,317 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:30:27,290 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:30:27,291 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 307 [2020-10-13 06:30:27,291 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-13 06:30:27,291 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5020 [2020-10-13 06:30:27,291 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:30:27,291 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 06:30:27,291 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 128 [2020-10-13 06:30:27,291 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-13 06:30:27,292 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:30:27,445 WARN L193 SmtUtils]: Spent 102.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-13 06:30:27,446 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 06:30:27,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:30:27,450 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:30:27,458 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:30:27,458 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 06:30:27,458 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:30:27,459 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-13 06:30:27,459 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:30:27,459 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 06:30:27,459 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 06:30:27,459 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 06:30:27,459 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:30:27,531 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 06:30:27,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:30:27,537 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:30:27,548 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:30:27,549 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 36 [2020-10-13 06:30:27,549 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:30:27,549 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-13 06:30:27,549 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:30:27,550 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 06:30:27,550 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 06:30:27,550 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 06:30:27,550 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:30:27,558 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-10-13 06:30:27,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:30:27,562 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:30:27,569 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:30:27,569 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-10-13 06:30:27,569 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:30:27,569 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-13 06:30:27,570 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:30:27,570 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 06:30:27,570 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 06:30:27,570 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 06:30:27,570 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:30:27,574 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2020-10-13 06:30:27,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:30:27,579 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:30:27,594 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:30:27,594 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 46 [2020-10-13 06:30:27,594 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:30:27,594 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-13 06:30:27,594 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:30:27,594 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 06:30:27,595 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 06:30:27,595 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 06:30:27,595 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:30:27,605 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2020-10-13 06:30:27,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:30:27,613 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:30:27,627 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:30:27,627 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-10-13 06:30:27,627 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:30:27,627 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-13 06:30:27,627 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:30:27,627 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 06:30:27,627 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 06:30:27,628 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-13 06:30:27,628 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:30:27,634 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2020-10-13 06:30:27,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:30:27,642 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:30:27,660 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:30:27,660 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-13 06:30:27,660 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:30:27,660 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-10-13 06:30:27,660 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:30:27,661 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 06:30:27,661 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 06:30:27,661 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-13 06:30:27,661 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:30:27,772 INFO L134 CoverageAnalysis]: Checked inductivity of 267 backedges. 155 proven. 2 refuted. 0 times theorem prover too weak. 110 trivial. 0 not checked. [2020-10-13 06:30:27,772 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1354059844] [2020-10-13 06:30:27,772 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 06:30:27,773 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-13 06:30:27,773 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1479235162] [2020-10-13 06:30:27,773 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-13 06:30:27,773 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 06:30:27,774 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-13 06:30:27,774 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-13 06:30:27,774 INFO L87 Difference]: Start difference. First operand 16985 states and 21599 transitions. Second operand 7 states. [2020-10-13 06:30:27,987 WARN L193 SmtUtils]: Spent 111.00 ms on a formula simplification that was a NOOP. DAG size: 129 [2020-10-13 06:30:28,477 WARN L193 SmtUtils]: Spent 107.00 ms on a formula simplification that was a NOOP. DAG size: 129 [2020-10-13 06:30:32,983 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 06:30:32,984 INFO L93 Difference]: Finished difference Result 60365 states and 84242 transitions. [2020-10-13 06:30:32,984 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-13 06:30:32,985 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 289 [2020-10-13 06:30:32,985 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 06:30:33,217 INFO L225 Difference]: With dead ends: 60365 [2020-10-13 06:30:33,217 INFO L226 Difference]: Without dead ends: 46534 [2020-10-13 06:30:33,279 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-13 06:30:33,340 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46534 states. [2020-10-13 06:30:34,477 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46534 to 46316. [2020-10-13 06:30:34,483 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 46316 states. [2020-10-13 06:30:34,698 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46316 states to 46316 states and 64929 transitions. [2020-10-13 06:30:34,699 INFO L78 Accepts]: Start accepts. Automaton has 46316 states and 64929 transitions. Word has length 289 [2020-10-13 06:30:34,700 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 06:30:34,700 INFO L479 AbstractCegarLoop]: Abstraction has 46316 states and 64929 transitions. [2020-10-13 06:30:34,700 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-13 06:30:34,700 INFO L276 IsEmpty]: Start isEmpty. Operand 46316 states and 64929 transitions. [2020-10-13 06:30:34,817 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 297 [2020-10-13 06:30:34,817 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 06:30:34,818 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 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] [2020-10-13 06:30:34,818 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-13 06:30:34,818 INFO L427 AbstractCegarLoop]: === Iteration 11 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 06:30:34,818 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 06:30:34,819 INFO L82 PathProgramCache]: Analyzing trace with hash -573061569, now seen corresponding path program 1 times [2020-10-13 06:30:34,819 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 06:30:34,819 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1494221081] [2020-10-13 06:30:34,819 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 06:30:34,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:30:34,897 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:30:34,964 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:30:35,122 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:30:37,920 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:30:39,895 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:30:39,896 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 312 [2020-10-13 06:30:39,896 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 06:30:39,896 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5024 [2020-10-13 06:30:39,896 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:30:39,896 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 06:30:39,896 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 45 [2020-10-13 06:30:39,896 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 19 [2020-10-13 06:30:39,896 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:30:40,074 WARN L193 SmtUtils]: Spent 114.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-13 06:30:40,075 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 06:30:40,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:30:40,080 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:30:40,083 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:30:40,083 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 06:30:40,083 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:30:40,083 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-13 06:30:40,083 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:30:40,083 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 06:30:40,083 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 06:30:40,084 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 06:30:40,084 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:30:40,156 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 06:30:40,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:30:40,175 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:30:40,198 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:30:40,198 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 36 [2020-10-13 06:30:40,198 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:30:40,198 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 27 [2020-10-13 06:30:40,198 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:30:40,199 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 06:30:40,199 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 06:30:40,199 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-10-13 06:30:40,199 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:30:40,216 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-10-13 06:30:40,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:30:40,227 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:30:40,253 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:30:40,254 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-10-13 06:30:40,254 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:30:40,254 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 30 [2020-10-13 06:30:40,254 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:30:40,254 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 06:30:40,254 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 06:30:40,254 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-10-13 06:30:40,254 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:30:40,391 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2020-10-13 06:30:40,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:30:40,410 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:30:40,427 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:30:40,427 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 46 [2020-10-13 06:30:40,427 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:30:40,427 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 23 [2020-10-13 06:30:40,427 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:30:40,427 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 06:30:40,427 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 43 [2020-10-13 06:30:40,427 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 06:30:40,428 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:30:40,438 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2020-10-13 06:30:40,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:30:40,450 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:30:40,464 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:30:40,464 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 35 [2020-10-13 06:30:40,464 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:30:40,464 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-10-13 06:30:40,464 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:30:40,464 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 06:30:40,465 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 32 [2020-10-13 06:30:40,465 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 06:30:40,465 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:30:40,534 INFO L134 CoverageAnalysis]: Checked inductivity of 269 backedges. 139 proven. 28 refuted. 0 times theorem prover too weak. 102 trivial. 0 not checked. [2020-10-13 06:30:40,534 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1494221081] [2020-10-13 06:30:40,535 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 06:30:40,535 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-13 06:30:40,535 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1987053200] [2020-10-13 06:30:40,535 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-13 06:30:40,536 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 06:30:40,536 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-13 06:30:40,536 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-13 06:30:40,536 INFO L87 Difference]: Start difference. First operand 46316 states and 64929 transitions. Second operand 7 states. [2020-10-13 06:30:40,664 WARN L193 SmtUtils]: Spent 109.00 ms on a formula simplification that was a NOOP. DAG size: 129 [2020-10-13 06:30:41,913 WARN L193 SmtUtils]: Spent 115.00 ms on a formula simplification that was a NOOP. DAG size: 132 [2020-10-13 06:30:43,798 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 06:30:43,798 INFO L93 Difference]: Finished difference Result 106619 states and 151966 transitions. [2020-10-13 06:30:43,798 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-13 06:30:43,799 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 296 [2020-10-13 06:30:43,799 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 06:30:44,132 INFO L225 Difference]: With dead ends: 106619 [2020-10-13 06:30:44,132 INFO L226 Difference]: Without dead ends: 64459 [2020-10-13 06:30:44,269 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 13 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-13 06:30:44,333 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64459 states. [2020-10-13 06:30:45,862 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64459 to 63838. [2020-10-13 06:30:45,862 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 63838 states. [2020-10-13 06:30:46,056 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63838 states to 63838 states and 88716 transitions. [2020-10-13 06:30:46,057 INFO L78 Accepts]: Start accepts. Automaton has 63838 states and 88716 transitions. Word has length 296 [2020-10-13 06:30:46,057 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 06:30:46,058 INFO L479 AbstractCegarLoop]: Abstraction has 63838 states and 88716 transitions. [2020-10-13 06:30:46,058 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-13 06:30:46,058 INFO L276 IsEmpty]: Start isEmpty. Operand 63838 states and 88716 transitions. [2020-10-13 06:30:46,143 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 301 [2020-10-13 06:30:46,144 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 06:30:46,144 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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] [2020-10-13 06:30:46,144 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-13 06:30:46,144 INFO L427 AbstractCegarLoop]: === Iteration 12 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 06:30:46,145 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 06:30:46,145 INFO L82 PathProgramCache]: Analyzing trace with hash 447137518, now seen corresponding path program 1 times [2020-10-13 06:30:46,145 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 06:30:46,145 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1062879230] [2020-10-13 06:30:46,145 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 06:30:46,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:30:46,252 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:30:46,331 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:30:46,468 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:30:47,148 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:30:47,293 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:30:51,229 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:30:51,229 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 316 [2020-10-13 06:30:51,229 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-13 06:30:51,229 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5016 [2020-10-13 06:30:51,230 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:30:51,230 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 06:30:51,230 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 114 [2020-10-13 06:30:51,230 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 37 [2020-10-13 06:30:51,230 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:30:51,420 WARN L193 SmtUtils]: Spent 104.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-13 06:30:51,421 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 06:30:51,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:30:51,425 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:30:51,429 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:30:51,429 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 06:30:51,429 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:30:51,430 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-13 06:30:51,430 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:30:51,430 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 06:30:51,430 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 06:30:51,430 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 06:30:51,431 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:30:51,501 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 06:30:51,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:30:51,505 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:30:51,525 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:30:51,526 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-13 06:30:51,526 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:30:51,526 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-10-13 06:30:51,526 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:30:51,527 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 06:30:51,527 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 06:30:51,527 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 06:30:51,527 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:30:51,535 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-10-13 06:30:51,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:30:51,541 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:30:51,559 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:30:51,559 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 35 [2020-10-13 06:30:51,559 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:30:51,559 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-10-13 06:30:51,560 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:30:51,560 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 06:30:51,560 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 06:30:51,560 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 06:30:51,560 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:30:51,573 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2020-10-13 06:30:51,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:30:51,602 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:30:51,659 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:30:51,659 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 46 [2020-10-13 06:30:51,660 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:30:51,660 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 68 [2020-10-13 06:30:51,660 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:30:51,660 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 06:30:51,660 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 06:30:51,661 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 40 [2020-10-13 06:30:51,661 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:30:51,691 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2020-10-13 06:30:51,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:30:51,717 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:30:51,792 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:30:51,792 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 35 [2020-10-13 06:30:51,792 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:30:51,792 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 85 [2020-10-13 06:30:51,793 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:30:51,793 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 06:30:51,793 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 06:30:51,793 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 35 [2020-10-13 06:30:51,793 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:30:51,902 INFO L134 CoverageAnalysis]: Checked inductivity of 287 backedges. 212 proven. 2 refuted. 0 times theorem prover too weak. 73 trivial. 0 not checked. [2020-10-13 06:30:51,902 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1062879230] [2020-10-13 06:30:51,902 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 06:30:51,902 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-13 06:30:51,903 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1798581949] [2020-10-13 06:30:51,903 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-13 06:30:51,903 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 06:30:51,903 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-13 06:30:51,903 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-10-13 06:30:51,904 INFO L87 Difference]: Start difference. First operand 63838 states and 88716 transitions. Second operand 8 states. [2020-10-13 06:30:52,046 WARN L193 SmtUtils]: Spent 110.00 ms on a formula simplification that was a NOOP. DAG size: 131 [2020-10-13 06:30:53,863 WARN L193 SmtUtils]: Spent 118.00 ms on a formula simplification that was a NOOP. DAG size: 132 [2020-10-13 06:30:54,418 WARN L193 SmtUtils]: Spent 122.00 ms on a formula simplification that was a NOOP. DAG size: 131 [2020-10-13 06:30:57,326 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 06:30:57,326 INFO L93 Difference]: Finished difference Result 176216 states and 258594 transitions. [2020-10-13 06:30:57,327 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-13 06:30:57,327 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 300 [2020-10-13 06:30:57,327 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 06:30:57,998 INFO L225 Difference]: With dead ends: 176216 [2020-10-13 06:30:57,998 INFO L226 Difference]: Without dead ends: 113068 [2020-10-13 06:30:58,194 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=55, Invalid=127, Unknown=0, NotChecked=0, Total=182 [2020-10-13 06:30:58,306 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 113068 states. [2020-10-13 06:31:01,587 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 113068 to 109486. [2020-10-13 06:31:01,587 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 109486 states. [2020-10-13 06:31:02,124 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 109486 states to 109486 states and 162678 transitions. [2020-10-13 06:31:02,125 INFO L78 Accepts]: Start accepts. Automaton has 109486 states and 162678 transitions. Word has length 300 [2020-10-13 06:31:02,126 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 06:31:02,126 INFO L479 AbstractCegarLoop]: Abstraction has 109486 states and 162678 transitions. [2020-10-13 06:31:02,126 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-13 06:31:02,126 INFO L276 IsEmpty]: Start isEmpty. Operand 109486 states and 162678 transitions. [2020-10-13 06:31:02,206 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 309 [2020-10-13 06:31:02,206 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 06:31:02,207 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 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, 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] [2020-10-13 06:31:02,207 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-13 06:31:02,207 INFO L427 AbstractCegarLoop]: === Iteration 13 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 06:31:02,207 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 06:31:02,208 INFO L82 PathProgramCache]: Analyzing trace with hash 585480955, now seen corresponding path program 1 times [2020-10-13 06:31:02,208 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 06:31:02,208 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [854813881] [2020-10-13 06:31:02,208 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 06:31:02,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:31:02,330 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:31:02,422 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:31:03,440 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:31:03,533 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:31:06,609 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:31:07,306 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:31:07,306 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 322 [2020-10-13 06:31:07,306 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-13 06:31:07,306 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5025 [2020-10-13 06:31:07,306 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:31:07,307 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 06:31:07,307 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 143 [2020-10-13 06:31:07,307 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-13 06:31:07,307 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:31:07,456 WARN L193 SmtUtils]: Spent 105.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-13 06:31:07,457 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 06:31:07,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:31:07,461 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:31:07,464 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:31:07,465 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 06:31:07,465 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:31:07,465 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-13 06:31:07,465 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:31:07,465 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 06:31:07,465 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 06:31:07,465 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 06:31:07,465 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:31:07,539 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 06:31:07,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:31:07,551 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:31:07,590 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:31:07,591 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 101 [2020-10-13 06:31:07,591 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:31:07,591 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 41 [2020-10-13 06:31:07,591 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:31:07,592 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 06:31:07,592 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 06:31:07,592 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 06:31:07,592 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:31:07,618 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2020-10-13 06:31:07,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:31:07,631 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:31:07,654 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:31:07,654 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-10-13 06:31:07,654 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:31:07,654 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 27 [2020-10-13 06:31:07,654 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:31:07,655 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 06:31:07,655 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 06:31:07,655 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-10-13 06:31:07,655 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:31:07,663 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2020-10-13 06:31:07,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:31:07,669 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:31:07,685 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:31:07,685 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-13 06:31:07,685 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:31:07,686 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-10-13 06:31:07,686 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:31:07,686 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 06:31:07,686 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 06:31:07,686 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-13 06:31:07,686 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:31:07,761 INFO L134 CoverageAnalysis]: Checked inductivity of 186 backedges. 154 proven. 2 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2020-10-13 06:31:07,761 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [854813881] [2020-10-13 06:31:07,762 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 06:31:07,762 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-13 06:31:07,762 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1627764576] [2020-10-13 06:31:07,762 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-13 06:31:07,762 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 06:31:07,763 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-13 06:31:07,763 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-13 06:31:07,763 INFO L87 Difference]: Start difference. First operand 109486 states and 162678 transitions. Second operand 7 states. [2020-10-13 06:31:07,978 WARN L193 SmtUtils]: Spent 117.00 ms on a formula simplification that was a NOOP. DAG size: 130 [2020-10-13 06:31:08,197 WARN L193 SmtUtils]: Spent 109.00 ms on a formula simplification that was a NOOP. DAG size: 129 [2020-10-13 06:31:14,656 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 06:31:14,657 INFO L93 Difference]: Finished difference Result 293296 states and 450254 transitions. [2020-10-13 06:31:14,657 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-13 06:31:14,657 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 308 [2020-10-13 06:31:14,657 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 06:31:15,588 INFO L225 Difference]: With dead ends: 293296 [2020-10-13 06:31:15,589 INFO L226 Difference]: Without dead ends: 184500 [2020-10-13 06:31:15,817 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-13 06:31:15,963 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 184500 states. [2020-10-13 06:31:20,114 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 184500 to 181838. [2020-10-13 06:31:20,114 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 181838 states. [2020-10-13 06:31:20,751 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 181838 states to 181838 states and 251103 transitions. [2020-10-13 06:31:20,752 INFO L78 Accepts]: Start accepts. Automaton has 181838 states and 251103 transitions. Word has length 308 [2020-10-13 06:31:20,752 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 06:31:20,752 INFO L479 AbstractCegarLoop]: Abstraction has 181838 states and 251103 transitions. [2020-10-13 06:31:20,752 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-13 06:31:20,752 INFO L276 IsEmpty]: Start isEmpty. Operand 181838 states and 251103 transitions. [2020-10-13 06:31:20,843 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 311 [2020-10-13 06:31:20,843 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 06:31:20,844 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-13 06:31:20,844 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-13 06:31:20,844 INFO L427 AbstractCegarLoop]: === Iteration 14 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 06:31:20,844 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 06:31:20,844 INFO L82 PathProgramCache]: Analyzing trace with hash 1440967448, now seen corresponding path program 1 times [2020-10-13 06:31:20,844 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 06:31:20,844 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [827413710] [2020-10-13 06:31:20,845 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 06:31:20,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:31:21,004 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:31:21,498 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:31:21,654 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:31:22,878 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:31:25,565 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:31:25,565 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 322 [2020-10-13 06:31:25,566 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 06:31:25,566 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4617 [2020-10-13 06:31:25,566 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:31:25,566 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-13 06:31:25,566 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-13 06:31:25,566 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 152 [2020-10-13 06:31:25,566 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:31:25,741 WARN L193 SmtUtils]: Spent 112.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-13 06:31:25,742 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 06:31:25,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:31:25,749 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:31:25,756 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:31:25,756 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 06:31:25,757 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:31:25,757 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-13 06:31:25,757 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:31:25,757 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 06:31:25,757 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 06:31:25,757 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-13 06:31:25,757 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:31:25,833 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 06:31:25,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:31:25,907 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:31:26,062 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:31:26,062 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 107 [2020-10-13 06:31:26,062 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:31:26,062 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 183 [2020-10-13 06:31:26,062 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:31:26,062 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 06:31:26,063 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 06:31:26,063 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 107 [2020-10-13 06:31:26,063 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:31:26,145 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2020-10-13 06:31:26,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:31:26,162 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:31:26,223 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:31:26,224 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 39 [2020-10-13 06:31:26,224 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:31:26,224 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 67 [2020-10-13 06:31:26,224 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:31:26,224 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 06:31:26,224 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 06:31:26,224 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 39 [2020-10-13 06:31:26,225 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:31:26,438 INFO L134 CoverageAnalysis]: Checked inductivity of 176 backedges. 139 proven. 33 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-10-13 06:31:26,439 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [827413710] [2020-10-13 06:31:26,439 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 06:31:26,439 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-13 06:31:26,439 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2134045222] [2020-10-13 06:31:26,439 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-13 06:31:26,440 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 06:31:26,440 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-13 06:31:26,440 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2020-10-13 06:31:26,440 INFO L87 Difference]: Start difference. First operand 181838 states and 251103 transitions. Second operand 8 states. [2020-10-13 06:31:27,063 WARN L193 SmtUtils]: Spent 602.00 ms on a formula simplification that was a NOOP. DAG size: 130 [2020-10-13 06:31:28,904 WARN L193 SmtUtils]: Spent 129.00 ms on a formula simplification that was a NOOP. DAG size: 134 [2020-10-13 06:31:37,742 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 06:31:37,742 INFO L93 Difference]: Finished difference Result 408953 states and 566568 transitions. [2020-10-13 06:31:37,743 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-10-13 06:31:37,743 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 310 [2020-10-13 06:31:37,743 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 06:31:38,584 INFO L225 Difference]: With dead ends: 408953 [2020-10-13 06:31:38,584 INFO L226 Difference]: Without dead ends: 239223 [2020-10-13 06:31:38,834 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=61, Invalid=149, Unknown=0, NotChecked=0, Total=210 [2020-10-13 06:31:39,021 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 239223 states. [2020-10-13 06:31:42,740 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 239223 to 238577. [2020-10-13 06:31:42,740 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 238577 states. [2020-10-13 06:31:44,495 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 238577 states to 238577 states and 325831 transitions. [2020-10-13 06:31:44,496 INFO L78 Accepts]: Start accepts. Automaton has 238577 states and 325831 transitions. Word has length 310 [2020-10-13 06:31:44,496 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 06:31:44,497 INFO L479 AbstractCegarLoop]: Abstraction has 238577 states and 325831 transitions. [2020-10-13 06:31:44,497 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-13 06:31:44,497 INFO L276 IsEmpty]: Start isEmpty. Operand 238577 states and 325831 transitions. [2020-10-13 06:31:44,688 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 370 [2020-10-13 06:31:44,688 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 06:31:44,688 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 06:31:44,689 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-10-13 06:31:44,689 INFO L427 AbstractCegarLoop]: === Iteration 15 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 06:31:44,689 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 06:31:44,689 INFO L82 PathProgramCache]: Analyzing trace with hash 1428014624, now seen corresponding path program 1 times [2020-10-13 06:31:44,689 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 06:31:44,690 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1043466815] [2020-10-13 06:31:44,690 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 06:31:44,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:31:44,824 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:31:44,940 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:31:45,538 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:31:48,341 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:31:49,798 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:31:49,798 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 385 [2020-10-13 06:31:49,798 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 06:31:49,798 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5025 [2020-10-13 06:31:49,798 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:31:49,799 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 06:31:49,799 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 167 [2020-10-13 06:31:49,799 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-13 06:31:49,799 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:31:49,966 WARN L193 SmtUtils]: Spent 104.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-13 06:31:49,967 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 06:31:49,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:31:49,971 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:31:49,974 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:31:49,975 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 06:31:49,975 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:31:49,975 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-13 06:31:49,975 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:31:49,975 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 06:31:49,975 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 06:31:49,975 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 06:31:49,976 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:31:54,607 WARN L193 SmtUtils]: Spent 4.62 s on a formula simplification that was a NOOP. DAG size: 88 [2020-10-13 06:31:54,608 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 06:31:54,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:31:54,614 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:31:54,618 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:31:54,618 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-13 06:31:54,618 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:31:54,619 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-13 06:31:54,619 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:31:54,619 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 06:31:54,619 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 06:31:54,619 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 06:31:54,619 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:31:54,622 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-10-13 06:31:54,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:31:54,671 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:31:54,780 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:31:54,780 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 145 [2020-10-13 06:31:54,780 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:31:54,780 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 129 [2020-10-13 06:31:54,780 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:31:54,781 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 06:31:54,781 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 06:31:54,781 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 139 [2020-10-13 06:31:54,781 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:31:54,824 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 163 [2020-10-13 06:31:54,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:31:54,830 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:31:54,843 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:31:54,843 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-13 06:31:54,843 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:31:54,844 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-13 06:31:54,844 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:31:54,844 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 06:31:54,844 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 06:31:54,844 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-13 06:31:54,844 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:31:54,868 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 173 [2020-10-13 06:31:54,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:31:54,884 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:31:54,901 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:31:54,901 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 39 [2020-10-13 06:31:54,901 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:31:54,901 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-10-13 06:31:54,901 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:31:54,901 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 06:31:54,901 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 36 [2020-10-13 06:31:54,902 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 06:31:54,902 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:31:54,995 INFO L134 CoverageAnalysis]: Checked inductivity of 273 backedges. 212 proven. 7 refuted. 0 times theorem prover too weak. 54 trivial. 0 not checked. [2020-10-13 06:31:54,995 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1043466815] [2020-10-13 06:31:54,995 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 06:31:54,995 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-13 06:31:54,996 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [433768830] [2020-10-13 06:31:54,996 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-13 06:31:54,996 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 06:31:54,996 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-13 06:31:54,996 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-13 06:31:54,997 INFO L87 Difference]: Start difference. First operand 238577 states and 325831 transitions. Second operand 7 states. [2020-10-13 06:31:55,718 WARN L193 SmtUtils]: Spent 128.00 ms on a formula simplification that was a NOOP. DAG size: 132 [2020-10-13 06:31:55,965 WARN L193 SmtUtils]: Spent 134.00 ms on a formula simplification that was a NOOP. DAG size: 134