/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=BIGGEST --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/Problem06_label33.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-12 12:11:31,644 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-12 12:11:31,646 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-12 12:11:31,672 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-12 12:11:31,672 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-12 12:11:31,673 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-12 12:11:31,675 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-12 12:11:31,677 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-12 12:11:31,678 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-12 12:11:31,679 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-12 12:11:31,680 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-12 12:11:31,681 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-12 12:11:31,682 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-12 12:11:31,683 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-12 12:11:31,684 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-12 12:11:31,685 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-12 12:11:31,686 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-12 12:11:31,687 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-12 12:11:31,688 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-12 12:11:31,690 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-12 12:11:31,692 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-12 12:11:31,693 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-12 12:11:31,694 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-12 12:11:31,695 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-12 12:11:31,697 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-12 12:11:31,697 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-12 12:11:31,698 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-12 12:11:31,699 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-12 12:11:31,699 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-12 12:11:31,700 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-12 12:11:31,700 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-12 12:11:31,703 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-12 12:11:31,703 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-12 12:11:31,705 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-12 12:11:31,706 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-12 12:11:31,706 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-12 12:11:31,708 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-12 12:11:31,708 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-12 12:11:31,708 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-12 12:11:31,712 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-12 12:11:31,713 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-12 12:11:31,716 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 [2020-10-12 12:11:31,762 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-12 12:11:31,763 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-12 12:11:31,766 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-12 12:11:31,767 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-12 12:11:31,767 INFO L138 SettingsManager]: * Use SBE=true [2020-10-12 12:11:31,767 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-12 12:11:31,767 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-12 12:11:31,767 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-12 12:11:31,768 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-12 12:11:31,768 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-12 12:11:31,768 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-12 12:11:31,768 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-12 12:11:31,769 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-12 12:11:31,769 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-12 12:11:31,769 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-12 12:11:31,769 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-12 12:11:31,769 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-12 12:11:31,770 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-12 12:11:31,770 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-12 12:11:31,770 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-12 12:11:31,770 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-12 12:11:31,770 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-12 12:11:31,771 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-12 12:11:31,771 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-12 12:11:31,771 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-12 12:11:31,771 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-12 12:11:31,771 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-12 12:11:31,771 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-12 12:11:31,772 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-12 12:11:31,772 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=BIGGEST;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=BIGGEST;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=BIGGEST;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=BIGGEST;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=BIGGEST;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=BIGGEST;log-additional-information=true;unknown-allowed=true; [2020-10-12 12:11:32,082 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-12 12:11:32,098 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-12 12:11:32,103 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-12 12:11:32,104 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-12 12:11:32,104 INFO L275 PluginConnector]: CDTParser initialized [2020-10-12 12:11:32,105 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem06_label33.c [2020-10-12 12:11:32,167 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/0dc66d74e/e5d1d25150674d498dd9b689db30325e/FLAG5b6aad41e [2020-10-12 12:11:33,026 INFO L306 CDTParser]: Found 1 translation units. [2020-10-12 12:11:33,027 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem06_label33.c [2020-10-12 12:11:33,084 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/0dc66d74e/e5d1d25150674d498dd9b689db30325e/FLAG5b6aad41e [2020-10-12 12:11:33,501 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/0dc66d74e/e5d1d25150674d498dd9b689db30325e [2020-10-12 12:11:33,512 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-12 12:11:33,514 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-12 12:11:33,515 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-12 12:11:33,515 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-12 12:11:33,519 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-12 12:11:33,521 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.10 12:11:33" (1/1) ... [2020-10-12 12:11:33,524 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@dccfc7a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 12:11:33, skipping insertion in model container [2020-10-12 12:11:33,525 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.10 12:11:33" (1/1) ... [2020-10-12 12:11:33,533 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-12 12:11:33,811 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-12 12:11:36,001 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-12 12:11:36,007 INFO L203 MainTranslator]: Completed pre-run [2020-10-12 12:11:37,163 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-12 12:11:37,222 INFO L208 MainTranslator]: Completed translation [2020-10-12 12:11:37,222 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 12:11:37 WrapperNode [2020-10-12 12:11:37,222 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-12 12:11:37,223 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-12 12:11:37,224 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-12 12:11:37,224 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-12 12:11:37,239 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 12:11:37" (1/1) ... [2020-10-12 12:11:37,241 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 12:11:37" (1/1) ... [2020-10-12 12:11:37,300 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 12:11:37" (1/1) ... [2020-10-12 12:11:37,301 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 12:11:37" (1/1) ... [2020-10-12 12:11:37,492 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 12:11:37" (1/1) ... [2020-10-12 12:11:37,528 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 12:11:37" (1/1) ... [2020-10-12 12:11:37,567 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 12:11:37" (1/1) ... [2020-10-12 12:11:37,618 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-12 12:11:37,618 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-12 12:11:37,619 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-12 12:11:37,619 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-12 12:11:37,620 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 12:11:37" (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 [2020-10-12 12:11:37,717 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-12 12:11:37,717 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-12 12:11:37,717 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-10-12 12:11:37,717 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2020-10-12 12:11:37,718 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2020-10-12 12:11:37,718 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output4 [2020-10-12 12:11:37,718 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output5 [2020-10-12 12:11:37,718 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-12 12:11:37,718 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-10-12 12:11:37,719 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2020-10-12 12:11:37,719 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2020-10-12 12:11:37,719 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output4 [2020-10-12 12:11:37,719 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output5 [2020-10-12 12:11:37,719 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-12 12:11:37,720 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-12 12:11:37,720 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-12 12:11:37,720 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-12 12:11:37,720 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-12 12:11:37,720 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-12 12:11:45,544 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-12 12:11:45,545 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-12 12:11:45,558 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.10 12:11:45 BoogieIcfgContainer [2020-10-12 12:11:45,558 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-12 12:11:45,560 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-12 12:11:45,560 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-12 12:11:45,563 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-12 12:11:45,564 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.10 12:11:33" (1/3) ... [2020-10-12 12:11:45,565 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5bed7b78 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.10 12:11:45, skipping insertion in model container [2020-10-12 12:11:45,565 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 12:11:37" (2/3) ... [2020-10-12 12:11:45,566 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5bed7b78 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.10 12:11:45, skipping insertion in model container [2020-10-12 12:11:45,566 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.10 12:11:45" (3/3) ... [2020-10-12 12:11:45,568 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem06_label33.c [2020-10-12 12:11:45,578 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-12 12:11:45,588 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-12 12:11:45,603 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-12 12:11:45,637 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-12 12:11:45,637 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-12 12:11:45,637 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-12 12:11:45,637 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-12 12:11:45,637 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-12 12:11:45,638 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-12 12:11:45,638 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-12 12:11:45,638 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-12 12:11:45,678 INFO L276 IsEmpty]: Start isEmpty. Operand 1315 states. [2020-10-12 12:11:45,729 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 963 [2020-10-12 12:11:45,730 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 12:11:45,732 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 12:11:45,732 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_output5Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 12:11:45,739 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 12:11:45,740 INFO L82 PathProgramCache]: Analyzing trace with hash -718738689, now seen corresponding path program 1 times [2020-10-12 12:11:45,751 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 12:11:45,751 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1032725332] [2020-10-12 12:11:45,752 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 12:11:46,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 12:11:47,506 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 12:11:49,748 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 12:11:51,975 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 12:11:51,976 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 978 [2020-10-12 12:11:51,976 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 12:11:51,976 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5223 [2020-10-12 12:11:51,979 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 12:11:51,981 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 26 [2020-10-12 12:11:51,981 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-12 12:11:51,982 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 769 [2020-10-12 12:11:51,982 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 5 [2020-10-12 12:11:54,872 WARN L193 SmtUtils]: Spent 215.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 66 [2020-10-12 12:11:55,087 WARN L193 SmtUtils]: Spent 195.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 66 [2020-10-12 12:11:55,350 WARN L193 SmtUtils]: Spent 232.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 66 [2020-10-12 12:11:55,602 WARN L193 SmtUtils]: Spent 222.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 62 [2020-10-12 12:11:55,825 WARN L193 SmtUtils]: Spent 194.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 58 [2020-10-12 12:11:56,091 WARN L193 SmtUtils]: Spent 223.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 58 [2020-10-12 12:11:56,295 WARN L193 SmtUtils]: Spent 165.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 58 [2020-10-12 12:11:56,489 WARN L193 SmtUtils]: Spent 157.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 56 [2020-10-12 12:11:56,678 WARN L193 SmtUtils]: Spent 144.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 56 [2020-10-12 12:11:56,853 WARN L193 SmtUtils]: Spent 136.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 56 [2020-10-12 12:11:57,373 WARN L193 SmtUtils]: Spent 126.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-12 12:11:57,375 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 12:11:57,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 12:11:57,390 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 12:11:57,405 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 12:11:57,406 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 12:11:57,406 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 12:11:57,406 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-10-12 12:11:57,406 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 12:11:57,407 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 12:11:57,407 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 12:11:57,407 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-12 12:11:57,407 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 12:12:08,445 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 12:12:08,446 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1032725332] [2020-10-12 12:12:08,447 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 12:12:08,448 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2020-10-12 12:12:08,449 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [810258570] [2020-10-12 12:12:08,456 INFO L459 AbstractCegarLoop]: Interpolant automaton has 18 states [2020-10-12 12:12:08,456 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 12:12:08,471 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2020-10-12 12:12:08,472 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=270, Unknown=0, NotChecked=0, Total=306 [2020-10-12 12:12:08,474 INFO L87 Difference]: Start difference. First operand 1315 states. Second operand 18 states. [2020-10-12 12:12:08,864 WARN L193 SmtUtils]: Spent 270.00 ms on a formula simplification that was a NOOP. DAG size: 154 [2020-10-12 12:12:09,639 WARN L193 SmtUtils]: Spent 653.00 ms on a formula simplification. DAG size of input: 170 DAG size of output: 166 [2020-10-12 12:12:10,344 WARN L193 SmtUtils]: Spent 633.00 ms on a formula simplification. DAG size of input: 170 DAG size of output: 166 [2020-10-12 12:12:11,118 WARN L193 SmtUtils]: Spent 674.00 ms on a formula simplification. DAG size of input: 182 DAG size of output: 174 [2020-10-12 12:12:15,065 WARN L193 SmtUtils]: Spent 661.00 ms on a formula simplification. DAG size of input: 180 DAG size of output: 173 [2020-10-12 12:12:18,246 WARN L193 SmtUtils]: Spent 712.00 ms on a formula simplification. DAG size of input: 183 DAG size of output: 172 [2020-10-12 12:12:20,773 WARN L193 SmtUtils]: Spent 612.00 ms on a formula simplification. DAG size of input: 166 DAG size of output: 163 [2020-10-12 12:12:21,504 WARN L193 SmtUtils]: Spent 641.00 ms on a formula simplification. DAG size of input: 175 DAG size of output: 169 [2020-10-12 12:12:22,530 WARN L193 SmtUtils]: Spent 669.00 ms on a formula simplification. DAG size of input: 190 DAG size of output: 168 [2020-10-12 12:12:31,573 WARN L193 SmtUtils]: Spent 576.00 ms on a formula simplification. DAG size of input: 175 DAG size of output: 161 [2020-10-12 12:12:32,267 WARN L193 SmtUtils]: Spent 620.00 ms on a formula simplification. DAG size of input: 182 DAG size of output: 166 [2020-10-12 12:12:35,141 WARN L193 SmtUtils]: Spent 653.00 ms on a formula simplification. DAG size of input: 180 DAG size of output: 165 [2020-10-12 12:12:42,538 WARN L193 SmtUtils]: Spent 619.00 ms on a formula simplification. DAG size of input: 172 DAG size of output: 159 [2020-10-12 12:12:43,323 WARN L193 SmtUtils]: Spent 674.00 ms on a formula simplification. DAG size of input: 177 DAG size of output: 163 [2020-10-12 12:12:45,682 WARN L193 SmtUtils]: Spent 595.00 ms on a formula simplification. DAG size of input: 174 DAG size of output: 161 [2020-10-12 12:12:57,426 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 12:12:57,426 INFO L93 Difference]: Finished difference Result 3396 states and 6359 transitions. [2020-10-12 12:12:57,428 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-10-12 12:12:57,430 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 962 [2020-10-12 12:12:57,434 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 12:12:57,472 INFO L225 Difference]: With dead ends: 3396 [2020-10-12 12:12:57,473 INFO L226 Difference]: Without dead ends: 2019 [2020-10-12 12:12:57,487 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 130 ImplicationChecksByTransitivity, 12.7s TimeCoverageRelationStatistics Valid=154, Invalid=902, Unknown=0, NotChecked=0, Total=1056 [2020-10-12 12:12:57,508 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2019 states. [2020-10-12 12:12:57,614 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2019 to 2019. [2020-10-12 12:12:57,615 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2019 states. [2020-10-12 12:12:57,626 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2019 states to 2019 states and 3053 transitions. [2020-10-12 12:12:57,628 INFO L78 Accepts]: Start accepts. Automaton has 2019 states and 3053 transitions. Word has length 962 [2020-10-12 12:12:57,630 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 12:12:57,630 INFO L479 AbstractCegarLoop]: Abstraction has 2019 states and 3053 transitions. [2020-10-12 12:12:57,630 INFO L480 AbstractCegarLoop]: Interpolant automaton has 18 states. [2020-10-12 12:12:57,630 INFO L276 IsEmpty]: Start isEmpty. Operand 2019 states and 3053 transitions. [2020-10-12 12:12:57,665 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1033 [2020-10-12 12:12:57,666 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 12:12:57,667 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 12:12:57,667 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-12 12:12:57,668 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_output5Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 12:12:57,668 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 12:12:57,668 INFO L82 PathProgramCache]: Analyzing trace with hash 38542866, now seen corresponding path program 1 times [2020-10-12 12:12:57,669 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 12:12:57,669 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1483262350] [2020-10-12 12:12:57,669 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 12:12:58,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 12:12:58,424 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 12:12:59,059 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 12:13:03,229 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 12:13:03,231 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1050 [2020-10-12 12:13:03,231 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 12:13:03,232 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5129 [2020-10-12 12:13:03,232 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 12:13:03,232 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-12 12:13:03,232 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 80 [2020-10-12 12:13:03,232 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 969 [2020-10-12 12:13:03,233 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 12:13:04,270 WARN L193 SmtUtils]: Spent 158.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-12 12:13:04,271 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 12:13:04,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 12:13:04,278 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 12:13:04,286 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 12:13:04,286 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 12:13:04,286 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 12:13:04,286 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-12 12:13:04,287 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 12:13:04,287 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 12:13:04,287 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 12:13:04,287 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 12:13:04,288 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 12:13:04,383 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-12 12:13:04,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 12:13:04,436 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 12:13:04,538 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 12:13:04,539 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 71 [2020-10-12 12:13:04,539 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 12:13:04,539 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 123 [2020-10-12 12:13:04,540 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 12:13:04,540 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 12:13:04,540 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 12:13:04,541 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 65 [2020-10-12 12:13:04,541 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 12:13:05,785 INFO L134 CoverageAnalysis]: Checked inductivity of 67 backedges. 66 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 12:13:05,785 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1483262350] [2020-10-12 12:13:05,786 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 12:13:05,786 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-12 12:13:05,786 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1411855333] [2020-10-12 12:13:05,789 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-12 12:13:05,790 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 12:13:05,790 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-12 12:13:05,790 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-12 12:13:05,790 INFO L87 Difference]: Start difference. First operand 2019 states and 3053 transitions. Second operand 6 states. [2020-10-12 12:13:05,993 WARN L193 SmtUtils]: Spent 165.00 ms on a formula simplification that was a NOOP. DAG size: 130 [2020-10-12 12:13:06,488 WARN L193 SmtUtils]: Spent 143.00 ms on a formula simplification that was a NOOP. DAG size: 129 [2020-10-12 12:13:28,976 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 12:13:28,976 INFO L93 Difference]: Finished difference Result 5487 states and 9498 transitions. [2020-10-12 12:13:28,977 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-12 12:13:28,977 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 1032 [2020-10-12 12:13:28,979 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 12:13:29,003 INFO L225 Difference]: With dead ends: 5487 [2020-10-12 12:13:29,003 INFO L226 Difference]: Without dead ends: 4228 [2020-10-12 12:13:29,009 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-10-12 12:13:29,015 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4228 states. [2020-10-12 12:13:29,124 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4228 to 4142. [2020-10-12 12:13:29,124 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4142 states. [2020-10-12 12:13:29,140 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4142 states to 4142 states and 6519 transitions. [2020-10-12 12:13:29,140 INFO L78 Accepts]: Start accepts. Automaton has 4142 states and 6519 transitions. Word has length 1032 [2020-10-12 12:13:29,142 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 12:13:29,142 INFO L479 AbstractCegarLoop]: Abstraction has 4142 states and 6519 transitions. [2020-10-12 12:13:29,143 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-12 12:13:29,143 INFO L276 IsEmpty]: Start isEmpty. Operand 4142 states and 6519 transitions. [2020-10-12 12:13:29,164 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1042 [2020-10-12 12:13:29,164 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 12:13:29,165 INFO L422 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 12:13:29,166 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-12 12:13:29,166 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_output5Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 12:13:29,166 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 12:13:29,167 INFO L82 PathProgramCache]: Analyzing trace with hash -1048011259, now seen corresponding path program 1 times [2020-10-12 12:13:29,167 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 12:13:29,167 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [938950929] [2020-10-12 12:13:29,168 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 12:13:29,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 12:13:29,614 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 12:13:30,146 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 12:13:34,593 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 12:13:34,594 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1061 [2020-10-12 12:13:34,594 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 12:13:34,594 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5054 [2020-10-12 12:13:34,594 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 12:13:34,595 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-12 12:13:34,595 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-12 12:13:34,595 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 76 [2020-10-12 12:13:34,595 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 12:13:35,270 WARN L193 SmtUtils]: Spent 247.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-12 12:13:35,272 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 12:13:35,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 12:13:35,284 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 12:13:35,300 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 12:13:35,301 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 12:13:35,301 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 12:13:35,301 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-10-12 12:13:35,302 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 12:13:35,302 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 12:13:35,303 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 12:13:35,303 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-12 12:13:35,303 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 12:13:35,458 WARN L193 SmtUtils]: Spent 133.00 ms on a formula simplification that was a NOOP. DAG size: 91 [2020-10-12 12:13:35,460 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-12 12:13:35,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 12:13:35,523 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 12:13:35,741 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 12:13:35,741 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 71 [2020-10-12 12:13:35,742 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 12:13:35,742 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 243 [2020-10-12 12:13:35,742 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 12:13:35,742 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 12:13:35,742 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 12:13:35,743 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 71 [2020-10-12 12:13:35,743 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 12:13:36,060 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2020-10-12 12:13:36,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 12:13:36,074 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 12:13:36,083 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 12:13:36,083 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-12 12:13:36,083 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 12:13:36,084 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-12 12:13:36,084 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 12:13:36,084 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 12:13:36,085 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-12 12:13:36,085 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 12:13:36,085 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 12:13:37,162 INFO L134 CoverageAnalysis]: Checked inductivity of 82 backedges. 73 proven. 4 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-10-12 12:13:37,162 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [938950929] [2020-10-12 12:13:37,163 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 12:13:37,163 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-12 12:13:37,163 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1848492099] [2020-10-12 12:13:37,165 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-12 12:13:37,165 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 12:13:37,165 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-12 12:13:37,166 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-12 12:13:37,166 INFO L87 Difference]: Start difference. First operand 4142 states and 6519 transitions. Second operand 7 states. [2020-10-12 12:13:37,351 WARN L193 SmtUtils]: Spent 150.00 ms on a formula simplification that was a NOOP. DAG size: 133 [2020-10-12 12:13:38,550 WARN L193 SmtUtils]: Spent 150.00 ms on a formula simplification that was a NOOP. DAG size: 138 [2020-10-12 12:13:59,253 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 12:13:59,253 INFO L93 Difference]: Finished difference Result 10853 states and 18065 transitions. [2020-10-12 12:13:59,254 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-12 12:13:59,254 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 1041 [2020-10-12 12:13:59,255 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 12:13:59,289 INFO L225 Difference]: With dead ends: 10853 [2020-10-12 12:13:59,289 INFO L226 Difference]: Without dead ends: 7471 [2020-10-12 12:13:59,298 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2020-10-12 12:13:59,307 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7471 states. [2020-10-12 12:13:59,481 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7471 to 7358. [2020-10-12 12:13:59,482 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7358 states. [2020-10-12 12:13:59,510 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7358 states to 7358 states and 10957 transitions. [2020-10-12 12:13:59,510 INFO L78 Accepts]: Start accepts. Automaton has 7358 states and 10957 transitions. Word has length 1041 [2020-10-12 12:13:59,511 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 12:13:59,511 INFO L479 AbstractCegarLoop]: Abstraction has 7358 states and 10957 transitions. [2020-10-12 12:13:59,511 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-12 12:13:59,511 INFO L276 IsEmpty]: Start isEmpty. Operand 7358 states and 10957 transitions. [2020-10-12 12:13:59,543 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1094 [2020-10-12 12:13:59,544 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 12:13:59,544 INFO L422 BasicCegarLoop]: trace histogram [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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 12:13:59,545 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-12 12:13:59,545 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_output5Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 12:13:59,545 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 12:13:59,546 INFO L82 PathProgramCache]: Analyzing trace with hash -1735032350, now seen corresponding path program 1 times [2020-10-12 12:13:59,546 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 12:13:59,546 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [610454725] [2020-10-12 12:13:59,547 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 12:13:59,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 12:13:59,821 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 12:14:00,824 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 12:14:03,300 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 12:14:04,887 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 12:14:04,887 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1113 [2020-10-12 12:14:04,887 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-12 12:14:04,887 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5145 [2020-10-12 12:14:04,888 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 12:14:04,888 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-12 12:14:04,888 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 143 [2020-10-12 12:14:04,888 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 969 [2020-10-12 12:14:04,888 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 12:14:05,679 WARN L193 SmtUtils]: Spent 137.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-12 12:14:05,680 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 12:14:05,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 12:14:05,687 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 12:14:05,696 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 12:14:05,697 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 12:14:05,698 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 12:14:05,699 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-12 12:14:05,699 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 12:14:05,699 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 12:14:05,699 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 12:14:05,699 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 12:14:05,699 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 12:14:05,791 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-12 12:14:05,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 12:14:05,811 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 12:14:05,857 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 12:14:05,857 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 123 [2020-10-12 12:14:05,857 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 12:14:05,857 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 48 [2020-10-12 12:14:05,857 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 12:14:05,858 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 12:14:05,858 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 12:14:05,858 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 12:14:05,858 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 12:14:06,048 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2020-10-12 12:14:06,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 12:14:06,074 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 12:14:06,081 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 12:14:06,082 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-12 12:14:06,082 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 12:14:06,082 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-12 12:14:06,082 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 12:14:06,082 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 12:14:06,082 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 12:14:06,082 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-10-12 12:14:06,083 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 12:14:07,006 INFO L134 CoverageAnalysis]: Checked inductivity of 134 backedges. 126 proven. 2 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-10-12 12:14:07,007 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [610454725] [2020-10-12 12:14:07,007 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 12:14:07,007 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-12 12:14:07,008 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [667695163] [2020-10-12 12:14:07,009 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-12 12:14:07,009 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 12:14:07,009 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-12 12:14:07,010 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-12 12:14:07,010 INFO L87 Difference]: Start difference. First operand 7358 states and 10957 transitions. Second operand 5 states. [2020-10-12 12:14:07,714 WARN L193 SmtUtils]: Spent 140.00 ms on a formula simplification that was a NOOP. DAG size: 129 [2020-10-12 12:14:25,494 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 12:14:25,494 INFO L93 Difference]: Finished difference Result 20197 states and 31327 transitions. [2020-10-12 12:14:25,495 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-12 12:14:25,495 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 1093 [2020-10-12 12:14:25,498 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 12:14:25,570 INFO L225 Difference]: With dead ends: 20197 [2020-10-12 12:14:25,570 INFO L226 Difference]: Without dead ends: 13599 [2020-10-12 12:14:25,596 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-12 12:14:25,614 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13599 states. [2020-10-12 12:14:25,924 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13599 to 13573. [2020-10-12 12:14:25,924 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13573 states. [2020-10-12 12:14:25,949 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13573 states to 13573 states and 19377 transitions. [2020-10-12 12:14:25,950 INFO L78 Accepts]: Start accepts. Automaton has 13573 states and 19377 transitions. Word has length 1093 [2020-10-12 12:14:25,951 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 12:14:25,952 INFO L479 AbstractCegarLoop]: Abstraction has 13573 states and 19377 transitions. [2020-10-12 12:14:25,952 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-12 12:14:25,955 INFO L276 IsEmpty]: Start isEmpty. Operand 13573 states and 19377 transitions. [2020-10-12 12:14:26,005 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1101 [2020-10-12 12:14:26,005 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 12:14:26,006 INFO L422 BasicCegarLoop]: trace histogram [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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 12:14:26,006 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-12 12:14:26,007 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_output5Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 12:14:26,007 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 12:14:26,007 INFO L82 PathProgramCache]: Analyzing trace with hash -352993038, now seen corresponding path program 1 times [2020-10-12 12:14:26,008 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 12:14:26,008 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1720461543] [2020-10-12 12:14:26,008 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 12:14:26,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 12:14:26,252 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 12:14:26,434 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 12:14:29,031 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 12:14:31,368 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 12:14:31,368 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1120 [2020-10-12 12:14:31,372 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-12 12:14:31,372 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5186 [2020-10-12 12:14:31,372 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 12:14:31,373 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-12 12:14:31,373 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-12 12:14:31,373 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 145 [2020-10-12 12:14:31,374 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 12:14:31,755 WARN L193 SmtUtils]: Spent 132.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-12 12:14:31,756 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 12:14:31,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 12:14:31,764 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 12:14:31,771 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 12:14:31,772 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 12:14:31,772 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 12:14:31,772 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-12 12:14:31,772 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 12:14:31,773 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 12:14:31,773 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 12:14:31,773 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-12 12:14:31,773 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 12:14:31,872 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-12 12:14:31,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 12:14:31,916 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 12:14:32,067 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 12:14:32,067 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 123 [2020-10-12 12:14:32,067 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 12:14:32,067 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 168 [2020-10-12 12:14:32,067 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 12:14:32,067 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 12:14:32,068 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 12:14:32,068 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 123 [2020-10-12 12:14:32,068 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 12:14:32,227 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2020-10-12 12:14:32,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 12:14:32,236 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 12:14:32,273 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 12:14:32,273 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-10-12 12:14:32,273 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 12:14:32,273 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 40 [2020-10-12 12:14:32,273 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 12:14:32,273 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 12:14:32,274 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 12:14:32,274 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-10-12 12:14:32,274 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 12:14:33,127 INFO L134 CoverageAnalysis]: Checked inductivity of 144 backedges. 138 proven. 2 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-10-12 12:14:33,127 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1720461543] [2020-10-12 12:14:33,127 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 12:14:33,128 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-12 12:14:33,128 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [257540550] [2020-10-12 12:14:33,129 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-12 12:14:33,129 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 12:14:33,129 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-12 12:14:33,130 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2020-10-12 12:14:33,130 INFO L87 Difference]: Start difference. First operand 13573 states and 19377 transitions. Second operand 8 states. [2020-10-12 12:14:33,304 WARN L193 SmtUtils]: Spent 142.00 ms on a formula simplification that was a NOOP. DAG size: 129 [2020-10-12 12:14:53,854 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 12:14:53,854 INFO L93 Difference]: Finished difference Result 39512 states and 58706 transitions. [2020-10-12 12:14:53,855 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-12 12:14:53,855 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 1100 [2020-10-12 12:14:53,856 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 12:14:53,987 INFO L225 Difference]: With dead ends: 39512 [2020-10-12 12:14:53,987 INFO L226 Difference]: Without dead ends: 26699 [2020-10-12 12:14:54,023 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2020-10-12 12:14:54,058 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26699 states. [2020-10-12 12:14:54,674 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26699 to 26626. [2020-10-12 12:14:54,674 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26626 states. [2020-10-12 12:14:54,738 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26626 states to 26626 states and 39540 transitions. [2020-10-12 12:14:54,739 INFO L78 Accepts]: Start accepts. Automaton has 26626 states and 39540 transitions. Word has length 1100 [2020-10-12 12:14:54,740 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 12:14:54,740 INFO L479 AbstractCegarLoop]: Abstraction has 26626 states and 39540 transitions. [2020-10-12 12:14:54,740 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-12 12:14:54,740 INFO L276 IsEmpty]: Start isEmpty. Operand 26626 states and 39540 transitions. [2020-10-12 12:14:54,833 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1101 [2020-10-12 12:14:54,834 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 12:14:54,835 INFO L422 BasicCegarLoop]: trace histogram [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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 12:14:54,835 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-12 12:14:54,835 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_output5Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 12:14:54,835 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 12:14:54,836 INFO L82 PathProgramCache]: Analyzing trace with hash -1979338512, now seen corresponding path program 1 times [2020-10-12 12:14:54,836 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 12:14:54,837 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [453844454] [2020-10-12 12:14:54,837 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 12:14:55,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 12:14:55,086 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 12:14:55,339 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 12:14:59,818 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 12:15:00,291 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 12:15:00,291 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1120 [2020-10-12 12:15:00,291 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-12 12:15:00,292 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5277 [2020-10-12 12:15:00,292 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 12:15:00,292 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-12 12:15:00,292 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 149 [2020-10-12 12:15:00,292 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 970 [2020-10-12 12:15:00,293 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 12:15:01,150 WARN L193 SmtUtils]: Spent 144.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-12 12:15:01,151 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 12:15:01,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 12:15:01,157 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 12:15:01,162 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 12:15:01,163 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 12:15:01,163 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 12:15:01,163 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-12 12:15:01,164 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 12:15:01,164 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 12:15:01,164 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 12:15:01,164 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 12:15:01,164 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 12:15:01,266 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-12 12:15:01,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 12:15:01,279 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 12:15:01,318 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 12:15:01,318 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 123 [2020-10-12 12:15:01,318 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 12:15:01,318 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 40 [2020-10-12 12:15:01,318 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 12:15:01,319 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 12:15:01,319 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 12:15:01,319 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 12:15:01,319 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 12:15:01,362 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2020-10-12 12:15:01,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 12:15:01,371 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 12:15:01,387 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 12:15:01,387 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-10-12 12:15:01,388 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 12:15:01,388 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-10-12 12:15:01,388 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 12:15:01,388 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 12:15:01,388 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 12:15:01,389 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-12 12:15:01,389 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 12:15:02,589 INFO L134 CoverageAnalysis]: Checked inductivity of 144 backedges. 131 proven. 2 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2020-10-12 12:15:02,590 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [453844454] [2020-10-12 12:15:02,590 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 12:15:02,592 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-12 12:15:02,592 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [365138432] [2020-10-12 12:15:02,594 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-12 12:15:02,594 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 12:15:02,594 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-12 12:15:02,594 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-12 12:15:02,595 INFO L87 Difference]: Start difference. First operand 26626 states and 39540 transitions. Second operand 6 states. [2020-10-12 12:15:03,441 WARN L193 SmtUtils]: Spent 255.00 ms on a formula simplification that was a NOOP. DAG size: 129 [2020-10-12 12:15:03,981 WARN L193 SmtUtils]: Spent 148.00 ms on a formula simplification that was a NOOP. DAG size: 130