/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SequenceOfStatements --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=NARROWEST --traceabstraction.additional.smt.options log-additional-information=true --traceabstraction.additional.smt.options unknown-allowed=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem06_label38.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-13 07:10:08,669 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-13 07:10:08,673 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-13 07:10:08,714 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-13 07:10:08,715 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-13 07:10:08,723 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-13 07:10:08,724 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-13 07:10:08,728 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-13 07:10:08,730 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-13 07:10:08,733 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-13 07:10:08,734 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-13 07:10:08,735 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-13 07:10:08,735 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-13 07:10:08,738 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-13 07:10:08,741 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-13 07:10:08,742 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-13 07:10:08,743 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-13 07:10:08,744 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-13 07:10:08,746 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-13 07:10:08,754 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-13 07:10:08,756 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-13 07:10:08,757 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-13 07:10:08,758 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-13 07:10:08,759 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-13 07:10:08,771 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-13 07:10:08,771 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-13 07:10:08,772 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-13 07:10:08,780 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-13 07:10:08,780 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-13 07:10:08,781 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-13 07:10:08,781 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-13 07:10:08,782 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-13 07:10:08,785 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-13 07:10:08,786 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-13 07:10:08,787 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-13 07:10:08,787 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-13 07:10:08,788 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-13 07:10:08,788 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-13 07:10:08,788 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-13 07:10:08,790 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-13 07:10:08,790 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-13 07:10:08,792 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-13 07:10:08,833 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-13 07:10:08,833 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-13 07:10:08,835 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-13 07:10:08,835 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-13 07:10:08,835 INFO L138 SettingsManager]: * Use SBE=true [2020-10-13 07:10:08,835 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-13 07:10:08,836 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-13 07:10:08,836 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-13 07:10:08,836 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-13 07:10:08,836 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-13 07:10:08,837 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-13 07:10:08,838 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-13 07:10:08,838 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-13 07:10:08,838 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-13 07:10:08,838 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-13 07:10:08,839 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-13 07:10:08,839 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-13 07:10:08,839 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-13 07:10:08,839 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-13 07:10:08,839 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-13 07:10:08,840 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-13 07:10:08,840 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-13 07:10:08,840 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-13 07:10:08,840 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-13 07:10:08,840 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-13 07:10:08,841 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-13 07:10:08,841 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-13 07:10:08,841 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-13 07:10:08,841 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-13 07:10:08,841 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=NARROWEST;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=NARROWEST;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=NARROWEST;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=NARROWEST;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=NARROWEST;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=NARROWEST;log-additional-information=true;unknown-allowed=true; [2020-10-13 07:10:09,156 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-13 07:10:09,171 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-13 07:10:09,176 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-13 07:10:09,178 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-13 07:10:09,179 INFO L275 PluginConnector]: CDTParser initialized [2020-10-13 07:10:09,180 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem06_label38.c [2020-10-13 07:10:09,250 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/ba38144c4/bd1557cbae344d15a79f2e04469ab9e0/FLAGf8def23f8 [2020-10-13 07:10:10,191 INFO L306 CDTParser]: Found 1 translation units. [2020-10-13 07:10:10,192 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem06_label38.c [2020-10-13 07:10:10,236 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/ba38144c4/bd1557cbae344d15a79f2e04469ab9e0/FLAGf8def23f8 [2020-10-13 07:10:10,662 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/ba38144c4/bd1557cbae344d15a79f2e04469ab9e0 [2020-10-13 07:10:10,671 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-13 07:10:10,673 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-13 07:10:10,674 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-13 07:10:10,674 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-13 07:10:10,678 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-13 07:10:10,679 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 07:10:10" (1/1) ... [2020-10-13 07:10:10,682 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@31ed4b80 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:10:10, skipping insertion in model container [2020-10-13 07:10:10,682 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 07:10:10" (1/1) ... [2020-10-13 07:10:10,691 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-13 07:10:10,922 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-13 07:10:13,161 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-13 07:10:13,166 INFO L203 MainTranslator]: Completed pre-run [2020-10-13 07:10:14,290 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-13 07:10:14,348 INFO L208 MainTranslator]: Completed translation [2020-10-13 07:10:14,349 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:10:14 WrapperNode [2020-10-13 07:10:14,350 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-13 07:10:14,350 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-13 07:10:14,351 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-13 07:10:14,351 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-13 07:10:14,365 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:10:14" (1/1) ... [2020-10-13 07:10:14,367 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:10:14" (1/1) ... [2020-10-13 07:10:14,471 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:10:14" (1/1) ... [2020-10-13 07:10:14,471 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:10:14" (1/1) ... [2020-10-13 07:10:14,653 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:10:14" (1/1) ... [2020-10-13 07:10:14,689 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:10:14" (1/1) ... [2020-10-13 07:10:14,910 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:10:14" (1/1) ... [2020-10-13 07:10:14,975 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-13 07:10:14,976 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-13 07:10:14,976 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-13 07:10:14,976 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-13 07:10:14,977 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:10:14" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-13 07:10:15,050 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-13 07:10:15,051 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-13 07:10:15,051 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-10-13 07:10:15,051 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2020-10-13 07:10:15,051 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2020-10-13 07:10:15,051 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output4 [2020-10-13 07:10:15,052 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output5 [2020-10-13 07:10:15,052 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-13 07:10:15,052 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-10-13 07:10:15,052 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2020-10-13 07:10:15,052 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2020-10-13 07:10:15,053 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output4 [2020-10-13 07:10:15,053 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output5 [2020-10-13 07:10:15,053 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-13 07:10:15,053 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-13 07:10:15,054 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-13 07:10:15,054 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-13 07:10:15,054 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-13 07:10:15,055 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-13 07:10:21,913 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-13 07:10:21,914 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-13 07:10:21,926 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 07:10:21 BoogieIcfgContainer [2020-10-13 07:10:21,926 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-13 07:10:21,927 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-13 07:10:21,927 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-13 07:10:21,930 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-13 07:10:21,931 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.10 07:10:10" (1/3) ... [2020-10-13 07:10:21,932 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@11022b62 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 07:10:21, skipping insertion in model container [2020-10-13 07:10:21,932 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:10:14" (2/3) ... [2020-10-13 07:10:21,932 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@11022b62 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 07:10:21, skipping insertion in model container [2020-10-13 07:10:21,932 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 07:10:21" (3/3) ... [2020-10-13 07:10:21,934 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem06_label38.c [2020-10-13 07:10:21,945 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-13 07:10:21,954 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-13 07:10:21,969 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-13 07:10:21,999 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-13 07:10:21,999 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-13 07:10:21,999 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-13 07:10:22,000 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-13 07:10:22,000 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-13 07:10:22,000 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-13 07:10:22,000 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-13 07:10:22,000 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-13 07:10:22,042 INFO L276 IsEmpty]: Start isEmpty. Operand 1315 states. [2020-10-13 07:10:22,104 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 953 [2020-10-13 07:10:22,104 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 07:10:22,107 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] [2020-10-13 07:10:22,107 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_output5Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 07:10:22,113 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 07:10:22,114 INFO L82 PathProgramCache]: Analyzing trace with hash 1827906359, now seen corresponding path program 1 times [2020-10-13 07:10:22,123 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 07:10:22,124 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [820933514] [2020-10-13 07:10:22,124 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 07:10:23,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 07:10:23,618 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 07:10:24,645 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 07:10:28,096 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 07:10:28,097 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 968 [2020-10-13 07:10:28,097 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 07:10:28,097 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5065 [2020-10-13 07:10:28,099 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 07:10:28,100 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 26 [2020-10-13 07:10:28,100 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-13 07:10:28,100 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 769 [2020-10-13 07:10:28,100 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-13 07:10:32,467 WARN L193 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 50 [2020-10-13 07:10:32,642 WARN L193 SmtUtils]: Spent 154.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 73 [2020-10-13 07:10:32,804 WARN L193 SmtUtils]: Spent 147.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 73 [2020-10-13 07:10:32,999 WARN L193 SmtUtils]: Spent 157.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 73 [2020-10-13 07:10:33,174 WARN L193 SmtUtils]: Spent 140.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 68 [2020-10-13 07:10:33,412 WARN L193 SmtUtils]: Spent 202.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 71 [2020-10-13 07:10:33,784 WARN L193 SmtUtils]: Spent 301.00 ms on a formula simplification. DAG size of input: 143 DAG size of output: 81 [2020-10-13 07:10:34,158 WARN L193 SmtUtils]: Spent 308.00 ms on a formula simplification. DAG size of input: 143 DAG size of output: 81 [2020-10-13 07:10:34,457 WARN L193 SmtUtils]: Spent 228.00 ms on a formula simplification. DAG size of input: 157 DAG size of output: 64 [2020-10-13 07:10:34,634 WARN L193 SmtUtils]: Spent 137.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 55 [2020-10-13 07:10:34,879 WARN L193 SmtUtils]: Spent 199.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 55 [2020-10-13 07:10:35,071 WARN L193 SmtUtils]: Spent 146.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 54 [2020-10-13 07:10:35,477 WARN L193 SmtUtils]: Spent 105.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-13 07:10:35,479 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 07:10:35,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 07:10:35,495 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 07:10:35,511 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 07:10:35,511 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 07:10:35,511 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 07:10:35,512 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-10-13 07:10:35,512 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 07:10:35,512 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 07:10:35,512 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 07:10:35,513 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-13 07:10:35,513 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 07:10:46,335 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 07:10:46,336 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [820933514] [2020-10-13 07:10:46,338 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 07:10:46,338 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2020-10-13 07:10:46,339 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [366081697] [2020-10-13 07:10:46,352 INFO L459 AbstractCegarLoop]: Interpolant automaton has 18 states [2020-10-13 07:10:46,352 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 07:10:46,365 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2020-10-13 07:10:46,366 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=271, Unknown=0, NotChecked=0, Total=306 [2020-10-13 07:10:46,368 INFO L87 Difference]: Start difference. First operand 1315 states. Second operand 18 states. [2020-10-13 07:10:46,734 WARN L193 SmtUtils]: Spent 225.00 ms on a formula simplification that was a NOOP. DAG size: 154 [2020-10-13 07:10:47,407 WARN L193 SmtUtils]: Spent 543.00 ms on a formula simplification. DAG size of input: 178 DAG size of output: 170 [2020-10-13 07:10:48,028 WARN L193 SmtUtils]: Spent 532.00 ms on a formula simplification. DAG size of input: 178 DAG size of output: 170 [2020-10-13 07:10:48,705 WARN L193 SmtUtils]: Spent 583.00 ms on a formula simplification. DAG size of input: 197 DAG size of output: 182 [2020-10-13 07:10:52,435 WARN L193 SmtUtils]: Spent 592.00 ms on a formula simplification. DAG size of input: 193 DAG size of output: 180 [2020-10-13 07:10:55,827 WARN L193 SmtUtils]: Spent 1.04 s on a formula simplification. DAG size of input: 215 DAG size of output: 181 [2020-10-13 07:10:58,361 WARN L193 SmtUtils]: Spent 636.00 ms on a formula simplification. DAG size of input: 194 DAG size of output: 170 [2020-10-13 07:10:59,144 WARN L193 SmtUtils]: Spent 706.00 ms on a formula simplification. DAG size of input: 207 DAG size of output: 180 [2020-10-13 07:11:00,486 WARN L193 SmtUtils]: Spent 994.00 ms on a formula simplification. DAG size of input: 211 DAG size of output: 178 [2020-10-13 07:11:09,596 WARN L193 SmtUtils]: Spent 507.00 ms on a formula simplification. DAG size of input: 170 DAG size of output: 163 [2020-10-13 07:11:10,227 WARN L193 SmtUtils]: Spent 558.00 ms on a formula simplification. DAG size of input: 179 DAG size of output: 170 [2020-10-13 07:11:13,033 WARN L193 SmtUtils]: Spent 550.00 ms on a formula simplification. DAG size of input: 190 DAG size of output: 167 [2020-10-13 07:11:19,955 WARN L193 SmtUtils]: Spent 481.00 ms on a formula simplification. DAG size of input: 173 DAG size of output: 159 [2020-10-13 07:11:20,577 WARN L193 SmtUtils]: Spent 519.00 ms on a formula simplification. DAG size of input: 179 DAG size of output: 163 [2020-10-13 07:11:22,883 WARN L193 SmtUtils]: Spent 509.00 ms on a formula simplification. DAG size of input: 175 DAG size of output: 161 [2020-10-13 07:11:35,368 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 07:11:35,369 INFO L93 Difference]: Finished difference Result 3396 states and 6359 transitions. [2020-10-13 07:11:35,370 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-10-13 07:11:35,372 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 952 [2020-10-13 07:11:35,376 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 07:11:35,416 INFO L225 Difference]: With dead ends: 3396 [2020-10-13 07:11:35,417 INFO L226 Difference]: Without dead ends: 2019 [2020-10-13 07:11:35,431 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 113 ImplicationChecksByTransitivity, 12.7s TimeCoverageRelationStatistics Valid=153, Invalid=903, Unknown=0, NotChecked=0, Total=1056 [2020-10-13 07:11:35,457 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2019 states. [2020-10-13 07:11:35,582 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2019 to 2019. [2020-10-13 07:11:35,584 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2019 states. [2020-10-13 07:11:35,594 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2019 states to 2019 states and 3053 transitions. [2020-10-13 07:11:35,596 INFO L78 Accepts]: Start accepts. Automaton has 2019 states and 3053 transitions. Word has length 952 [2020-10-13 07:11:35,598 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 07:11:35,599 INFO L479 AbstractCegarLoop]: Abstraction has 2019 states and 3053 transitions. [2020-10-13 07:11:35,599 INFO L480 AbstractCegarLoop]: Interpolant automaton has 18 states. [2020-10-13 07:11:35,599 INFO L276 IsEmpty]: Start isEmpty. Operand 2019 states and 3053 transitions. [2020-10-13 07:11:35,644 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1023 [2020-10-13 07:11:35,644 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 07:11:35,645 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] [2020-10-13 07:11:35,645 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-13 07:11:35,646 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_output5Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 07:11:35,646 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 07:11:35,646 INFO L82 PathProgramCache]: Analyzing trace with hash -2060123638, now seen corresponding path program 1 times [2020-10-13 07:11:35,647 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 07:11:35,647 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1698131633] [2020-10-13 07:11:35,647 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 07:11:36,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 07:11:36,677 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 07:11:37,420 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 07:11:41,218 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 07:11:41,219 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1040 [2020-10-13 07:11:41,219 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 07:11:41,219 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5070 [2020-10-13 07:11:41,219 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 07:11:41,220 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-13 07:11:41,220 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-13 07:11:41,220 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 76 [2020-10-13 07:11:41,220 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 07:11:41,603 WARN L193 SmtUtils]: Spent 118.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-13 07:11:41,604 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 07:11:41,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 07:11:41,615 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 07:11:41,635 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 07:11:41,636 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 07:11:41,636 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 07:11:41,636 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 23 [2020-10-13 07:11:41,636 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 07:11:41,636 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 07:11:41,637 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 07:11:41,637 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-13 07:11:41,637 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 07:11:41,722 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 07:11:41,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 07:11:41,768 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 07:11:41,941 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 07:11:41,941 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 71 [2020-10-13 07:11:41,942 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 07:11:41,942 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 192 [2020-10-13 07:11:41,942 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 07:11:41,942 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 07:11:41,942 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 07:11:41,943 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 71 [2020-10-13 07:11:41,943 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 07:11:42,821 INFO L134 CoverageAnalysis]: Checked inductivity of 67 backedges. 67 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 07:11:42,821 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1698131633] [2020-10-13 07:11:42,821 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 07:11:42,822 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-13 07:11:42,822 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [543947909] [2020-10-13 07:11:42,825 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-13 07:11:42,825 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 07:11:42,826 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-13 07:11:42,826 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-13 07:11:42,826 INFO L87 Difference]: Start difference. First operand 2019 states and 3053 transitions. Second operand 7 states. [2020-10-13 07:11:42,995 WARN L193 SmtUtils]: Spent 136.00 ms on a formula simplification that was a NOOP. DAG size: 136 [2020-10-13 07:11:44,274 WARN L193 SmtUtils]: Spent 128.00 ms on a formula simplification that was a NOOP. DAG size: 136 [2020-10-13 07:12:04,267 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 07:12:04,267 INFO L93 Difference]: Finished difference Result 4501 states and 7545 transitions. [2020-10-13 07:12:04,268 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-13 07:12:04,268 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 1022 [2020-10-13 07:12:04,269 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 07:12:04,287 INFO L225 Difference]: With dead ends: 4501 [2020-10-13 07:12:04,287 INFO L226 Difference]: Without dead ends: 3242 [2020-10-13 07:12:04,292 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2020-10-13 07:12:04,297 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3242 states. [2020-10-13 07:12:04,377 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3242 to 3174. [2020-10-13 07:12:04,377 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3174 states. [2020-10-13 07:12:04,388 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3174 states to 3174 states and 4689 transitions. [2020-10-13 07:12:04,389 INFO L78 Accepts]: Start accepts. Automaton has 3174 states and 4689 transitions. Word has length 1022 [2020-10-13 07:12:04,389 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 07:12:04,389 INFO L479 AbstractCegarLoop]: Abstraction has 3174 states and 4689 transitions. [2020-10-13 07:12:04,390 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-13 07:12:04,390 INFO L276 IsEmpty]: Start isEmpty. Operand 3174 states and 4689 transitions. [2020-10-13 07:12:04,406 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1075 [2020-10-13 07:12:04,407 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 07:12:04,407 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-13 07:12:04,408 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-13 07:12:04,408 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_output5Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 07:12:04,408 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 07:12:04,409 INFO L82 PathProgramCache]: Analyzing trace with hash 1770903885, now seen corresponding path program 1 times [2020-10-13 07:12:04,409 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 07:12:04,409 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1254081116] [2020-10-13 07:12:04,409 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 07:12:04,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 07:12:05,131 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 07:12:05,684 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 07:12:09,936 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 07:12:09,937 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1092 [2020-10-13 07:12:09,937 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 07:12:09,937 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5087 [2020-10-13 07:12:09,937 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 07:12:09,938 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 21 [2020-10-13 07:12:09,938 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-13 07:12:09,938 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 552 [2020-10-13 07:12:09,938 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 07:12:11,795 WARN L193 SmtUtils]: Spent 145.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 68 [2020-10-13 07:12:11,988 WARN L193 SmtUtils]: Spent 180.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 68 [2020-10-13 07:12:12,204 WARN L193 SmtUtils]: Spent 193.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 68 [2020-10-13 07:12:12,411 WARN L193 SmtUtils]: Spent 177.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 60 [2020-10-13 07:12:12,606 WARN L193 SmtUtils]: Spent 157.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 58 [2020-10-13 07:12:12,937 WARN L193 SmtUtils]: Spent 144.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 61 [2020-10-13 07:12:13,090 WARN L193 SmtUtils]: Spent 118.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 53 [2020-10-13 07:12:13,500 WARN L193 SmtUtils]: Spent 112.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-13 07:12:13,501 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 07:12:13,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 07:12:13,510 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 07:12:13,518 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 07:12:13,519 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 07:12:13,519 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 07:12:13,519 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-13 07:12:13,519 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 07:12:13,519 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 07:12:13,520 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 07:12:13,520 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-13 07:12:13,520 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 07:12:13,647 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 07:12:13,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 07:12:13,724 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 07:12:14,036 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 07:12:14,037 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 123 [2020-10-13 07:12:14,042 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 07:12:14,042 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 344 [2020-10-13 07:12:14,042 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 07:12:14,043 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-13 07:12:14,043 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 07:12:14,043 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 123 [2020-10-13 07:12:14,043 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 07:12:14,556 WARN L193 SmtUtils]: Spent 236.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 51 [2020-10-13 07:12:14,821 WARN L193 SmtUtils]: Spent 193.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 80 [2020-10-13 07:12:23,053 INFO L134 CoverageAnalysis]: Checked inductivity of 119 backedges. 2 proven. 117 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 07:12:23,054 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1254081116] [2020-10-13 07:12:23,054 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 07:12:23,054 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17] total 17 [2020-10-13 07:12:23,055 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [542561566] [2020-10-13 07:12:23,059 INFO L459 AbstractCegarLoop]: Interpolant automaton has 18 states [2020-10-13 07:12:23,059 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 07:12:23,059 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2020-10-13 07:12:23,060 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=267, Unknown=0, NotChecked=0, Total=306 [2020-10-13 07:12:23,060 INFO L87 Difference]: Start difference. First operand 3174 states and 4689 transitions. Second operand 18 states. [2020-10-13 07:12:23,315 WARN L193 SmtUtils]: Spent 160.00 ms on a formula simplification that was a NOOP. DAG size: 138 [2020-10-13 07:12:25,489 WARN L193 SmtUtils]: Spent 328.00 ms on a formula simplification. DAG size of input: 117 DAG size of output: 68 [2020-10-13 07:12:25,735 WARN L193 SmtUtils]: Spent 158.00 ms on a formula simplification. DAG size of input: 89 DAG size of output: 60 [2020-10-13 07:12:26,035 WARN L193 SmtUtils]: Spent 211.00 ms on a formula simplification. DAG size of input: 107 DAG size of output: 72 [2020-10-13 07:12:26,665 WARN L193 SmtUtils]: Spent 564.00 ms on a formula simplification. DAG size of input: 197 DAG size of output: 166 [2020-10-13 07:12:27,340 WARN L193 SmtUtils]: Spent 616.00 ms on a formula simplification. DAG size of input: 209 DAG size of output: 174 [2020-10-13 07:12:28,950 WARN L193 SmtUtils]: Spent 929.00 ms on a formula simplification. DAG size of input: 210 DAG size of output: 173 [2020-10-13 07:12:32,148 WARN L193 SmtUtils]: Spent 901.00 ms on a formula simplification. DAG size of input: 219 DAG size of output: 172 [2020-10-13 07:12:41,438 WARN L193 SmtUtils]: Spent 597.00 ms on a formula simplification. DAG size of input: 199 DAG size of output: 168 [2020-10-13 07:12:42,191 WARN L193 SmtUtils]: Spent 665.00 ms on a formula simplification. DAG size of input: 211 DAG size of output: 180 [2020-10-13 07:12:43,606 WARN L193 SmtUtils]: Spent 678.00 ms on a formula simplification. DAG size of input: 208 DAG size of output: 177 [2020-10-13 07:12:53,513 WARN L193 SmtUtils]: Spent 920.00 ms on a formula simplification. DAG size of input: 211 DAG size of output: 174 [2020-10-13 07:12:54,617 WARN L193 SmtUtils]: Spent 658.00 ms on a formula simplification. DAG size of input: 213 DAG size of output: 171 [2020-10-13 07:13:17,956 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 07:13:17,957 INFO L93 Difference]: Finished difference Result 8455 states and 13435 transitions. [2020-10-13 07:13:17,963 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2020-10-13 07:13:17,964 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 1074 [2020-10-13 07:13:17,965 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 07:13:17,995 INFO L225 Difference]: With dead ends: 8455 [2020-10-13 07:13:17,995 INFO L226 Difference]: Without dead ends: 6041 [2020-10-13 07:13:18,002 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 92 ImplicationChecksByTransitivity, 10.6s TimeCoverageRelationStatistics Valid=218, Invalid=774, Unknown=0, NotChecked=0, Total=992 [2020-10-13 07:13:18,009 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6041 states. [2020-10-13 07:13:18,129 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6041 to 5940. [2020-10-13 07:13:18,129 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5940 states. [2020-10-13 07:13:18,148 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5940 states to 5940 states and 8860 transitions. [2020-10-13 07:13:18,149 INFO L78 Accepts]: Start accepts. Automaton has 5940 states and 8860 transitions. Word has length 1074 [2020-10-13 07:13:18,150 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 07:13:18,150 INFO L479 AbstractCegarLoop]: Abstraction has 5940 states and 8860 transitions. [2020-10-13 07:13:18,150 INFO L480 AbstractCegarLoop]: Interpolant automaton has 18 states. [2020-10-13 07:13:18,150 INFO L276 IsEmpty]: Start isEmpty. Operand 5940 states and 8860 transitions. [2020-10-13 07:13:18,200 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1100 [2020-10-13 07:13:18,201 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 07:13:18,201 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-13 07:13:18,202 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-13 07:13:18,202 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_output5Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 07:13:18,202 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 07:13:18,203 INFO L82 PathProgramCache]: Analyzing trace with hash 370287226, now seen corresponding path program 1 times [2020-10-13 07:13:18,203 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 07:13:18,203 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [112870223] [2020-10-13 07:13:18,203 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 07:13:18,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 07:13:18,745 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 07:13:19,394 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 07:13:20,405 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 07:13:23,559 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 07:13:23,559 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1119 [2020-10-13 07:13:23,559 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-13 07:13:23,559 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5013 [2020-10-13 07:13:23,560 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 07:13:23,561 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-13 07:13:23,562 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 159 [2020-10-13 07:13:23,562 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 959 [2020-10-13 07:13:23,562 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-13 07:13:24,542 WARN L193 SmtUtils]: Spent 111.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-13 07:13:24,543 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 07:13:24,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 07:13:24,548 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 07:13:24,551 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 07:13:24,551 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 07:13:24,551 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 07:13:24,551 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-13 07:13:24,551 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 07:13:24,552 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 07:13:24,552 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 07:13:24,552 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 07:13:24,552 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 07:13:24,630 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 07:13:24,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 07:13:24,641 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 07:13:24,674 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 07:13:24,674 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 123 [2020-10-13 07:13:24,674 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 07:13:24,674 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 35 [2020-10-13 07:13:24,674 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 07:13:24,675 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 07:13:24,675 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 07:13:24,675 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 07:13:24,675 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 07:13:24,705 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2020-10-13 07:13:24,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 07:13:24,720 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 07:13:24,753 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 07:13:24,753 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 26 [2020-10-13 07:13:24,754 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 07:13:24,754 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 39 [2020-10-13 07:13:24,754 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 07:13:24,754 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 07:13:24,754 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 07:13:24,755 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-10-13 07:13:24,755 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 07:13:25,437 INFO L134 CoverageAnalysis]: Checked inductivity of 166 backedges. 142 proven. 2 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2020-10-13 07:13:25,437 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [112870223] [2020-10-13 07:13:25,437 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 07:13:25,438 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-13 07:13:25,438 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [506092446] [2020-10-13 07:13:25,439 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 07:13:25,440 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 07:13:25,440 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 07:13:25,440 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-13 07:13:25,441 INFO L87 Difference]: Start difference. First operand 5940 states and 8860 transitions. Second operand 5 states. [2020-10-13 07:13:26,634 WARN L193 SmtUtils]: Spent 118.00 ms on a formula simplification that was a NOOP. DAG size: 129 [2020-10-13 07:13:41,300 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 07:13:41,300 INFO L93 Difference]: Finished difference Result 15469 states and 24302 transitions. [2020-10-13 07:13:41,302 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 07:13:41,303 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 1099 [2020-10-13 07:13:41,305 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 07:13:41,349 INFO L225 Difference]: With dead ends: 15469 [2020-10-13 07:13:41,349 INFO L226 Difference]: Without dead ends: 10289 [2020-10-13 07:13:41,362 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 [2020-10-13 07:13:41,374 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10289 states. [2020-10-13 07:13:41,560 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10289 to 10189. [2020-10-13 07:13:41,560 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10189 states. [2020-10-13 07:13:41,583 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10189 states to 10189 states and 14523 transitions. [2020-10-13 07:13:41,584 INFO L78 Accepts]: Start accepts. Automaton has 10189 states and 14523 transitions. Word has length 1099 [2020-10-13 07:13:41,586 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 07:13:41,586 INFO L479 AbstractCegarLoop]: Abstraction has 10189 states and 14523 transitions. [2020-10-13 07:13:41,586 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 07:13:41,586 INFO L276 IsEmpty]: Start isEmpty. Operand 10189 states and 14523 transitions. [2020-10-13 07:13:41,626 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1109 [2020-10-13 07:13:41,627 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 07:13:41,627 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-13 07:13:41,628 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-13 07:13:41,628 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_output5Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 07:13:41,628 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 07:13:41,629 INFO L82 PathProgramCache]: Analyzing trace with hash -1786207411, now seen corresponding path program 1 times [2020-10-13 07:13:41,631 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 07:13:41,631 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1812497054] [2020-10-13 07:13:41,632 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 07:13:41,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 07:13:41,882 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 07:13:42,671 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 07:13:43,117 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 07:13:46,947 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 07:13:46,947 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1130 [2020-10-13 07:13:46,947 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-13 07:13:46,947 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5136 [2020-10-13 07:13:46,948 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 07:13:46,948 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 07:13:46,948 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 159 [2020-10-13 07:13:46,948 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-13 07:13:46,948 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 07:13:47,443 WARN L193 SmtUtils]: Spent 171.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-13 07:13:47,444 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 07:13:47,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 07:13:47,450 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 07:13:47,457 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 07:13:47,458 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 07:13:47,458 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 07:13:47,458 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-13 07:13:47,459 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 07:13:47,459 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 07:13:47,459 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 07:13:47,460 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 07:13:47,460 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 07:13:47,593 WARN L193 SmtUtils]: Spent 115.00 ms on a formula simplification that was a NOOP. DAG size: 91 [2020-10-13 07:13:47,596 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 07:13:47,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 07:13:47,617 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 07:13:47,697 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 07:13:47,698 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 123 [2020-10-13 07:13:47,698 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 07:13:47,698 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 83 [2020-10-13 07:13:47,699 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 07:13:47,699 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 07:13:47,699 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 07:13:47,700 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 07:13:47,700 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 07:13:47,772 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2020-10-13 07:13:47,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 07:13:47,795 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 07:13:47,842 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 07:13:47,843 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 26 [2020-10-13 07:13:47,843 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 07:13:47,843 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 56 [2020-10-13 07:13:47,844 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 07:13:47,844 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 07:13:47,844 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 07:13:47,845 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-10-13 07:13:47,845 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 07:13:47,860 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 155 [2020-10-13 07:13:47,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 07:13:47,871 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 07:13:47,902 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 07:13:47,902 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-13 07:13:47,903 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 07:13:47,903 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 34 [2020-10-13 07:13:47,903 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 07:13:47,903 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 07:13:47,904 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 07:13:47,904 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-13 07:13:47,905 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 07:13:48,678 INFO L134 CoverageAnalysis]: Checked inductivity of 190 backedges. 164 proven. 2 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2020-10-13 07:13:48,678 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1812497054] [2020-10-13 07:13:48,679 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 07:13:48,679 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-13 07:13:48,679 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [727774338] [2020-10-13 07:13:48,680 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-13 07:13:48,680 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 07:13:48,681 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-13 07:13:48,681 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-13 07:13:48,681 INFO L87 Difference]: Start difference. First operand 10189 states and 14523 transitions. Second operand 7 states. [2020-10-13 07:13:49,390 WARN L193 SmtUtils]: Spent 130.00 ms on a formula simplification that was a NOOP. DAG size: 129 [2020-10-13 07:13:49,752 WARN L193 SmtUtils]: Spent 122.00 ms on a formula simplification that was a NOOP. DAG size: 129