/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=SMALLESTAMONGWIDE --traceabstraction.additional.smt.options tolerance=0.2 --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_label46.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-14 20:01:25,982 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-14 20:01:25,987 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-14 20:01:26,026 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-14 20:01:26,026 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-14 20:01:26,034 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-14 20:01:26,036 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-14 20:01:26,040 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-14 20:01:26,042 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-14 20:01:26,045 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-14 20:01:26,046 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-14 20:01:26,048 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-14 20:01:26,049 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-14 20:01:26,051 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-14 20:01:26,054 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-14 20:01:26,056 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-14 20:01:26,058 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-14 20:01:26,059 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-14 20:01:26,060 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-14 20:01:26,068 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-14 20:01:26,070 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-14 20:01:26,071 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-14 20:01:26,072 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-14 20:01:26,073 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-14 20:01:26,084 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-14 20:01:26,085 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-14 20:01:26,085 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-14 20:01:26,088 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-14 20:01:26,088 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-14 20:01:26,091 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-14 20:01:26,091 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-14 20:01:26,092 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-14 20:01:26,093 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-14 20:01:26,093 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-14 20:01:26,098 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-14 20:01:26,099 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-14 20:01:26,099 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-14 20:01:26,100 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-14 20:01:26,100 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-14 20:01:26,101 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-14 20:01:26,101 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-14 20:01:26,104 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 [2020-10-14 20:01:26,143 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-14 20:01:26,143 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-14 20:01:26,145 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-14 20:01:26,145 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-14 20:01:26,145 INFO L138 SettingsManager]: * Use SBE=true [2020-10-14 20:01:26,145 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-14 20:01:26,145 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-14 20:01:26,146 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-14 20:01:26,146 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-14 20:01:26,146 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-14 20:01:26,147 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-14 20:01:26,147 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-14 20:01:26,148 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-14 20:01:26,148 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-14 20:01:26,148 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-14 20:01:26,148 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-14 20:01:26,148 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-14 20:01:26,149 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-14 20:01:26,149 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-14 20:01:26,149 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-14 20:01:26,149 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-14 20:01:26,150 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-14 20:01:26,150 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-14 20:01:26,150 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-14 20:01:26,150 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-14 20:01:26,150 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-14 20:01:26,151 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-14 20:01:26,151 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-14 20:01:26,151 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-14 20:01:26,151 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=SMALLESTAMONGWIDE;tolerance=0.2;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=SMALLESTAMONGWIDE;tolerance=0.2;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=SMALLESTAMONGWIDE;tolerance=0.2;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=SMALLESTAMONGWIDE;tolerance=0.2;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=SMALLESTAMONGWIDE;tolerance=0.2;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=SMALLESTAMONGWIDE;tolerance=0.2;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=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true;unknown-allowed=true; [2020-10-14 20:01:26,434 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-14 20:01:26,447 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-14 20:01:26,450 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-14 20:01:26,452 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-14 20:01:26,452 INFO L275 PluginConnector]: CDTParser initialized [2020-10-14 20:01:26,453 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem06_label46.c [2020-10-14 20:01:26,520 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/16d57685a/dc783c2647584f6e86eb8b6fe1c3e1d9/FLAGfe257b534 [2020-10-14 20:01:27,360 INFO L306 CDTParser]: Found 1 translation units. [2020-10-14 20:01:27,361 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem06_label46.c [2020-10-14 20:01:27,414 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/16d57685a/dc783c2647584f6e86eb8b6fe1c3e1d9/FLAGfe257b534 [2020-10-14 20:01:27,860 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/16d57685a/dc783c2647584f6e86eb8b6fe1c3e1d9 [2020-10-14 20:01:27,870 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-14 20:01:27,872 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-14 20:01:27,873 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-14 20:01:27,874 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-14 20:01:27,878 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-14 20:01:27,879 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 08:01:27" (1/1) ... [2020-10-14 20:01:27,882 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6266eb80 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 08:01:27, skipping insertion in model container [2020-10-14 20:01:27,883 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 08:01:27" (1/1) ... [2020-10-14 20:01:27,892 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-14 20:01:28,117 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-14 20:01:30,167 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-14 20:01:30,173 INFO L203 MainTranslator]: Completed pre-run [2020-10-14 20:01:31,233 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-14 20:01:31,288 INFO L208 MainTranslator]: Completed translation [2020-10-14 20:01:31,289 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 08:01:31 WrapperNode [2020-10-14 20:01:31,289 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-14 20:01:31,289 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-14 20:01:31,290 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-14 20:01:31,290 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-14 20:01:31,300 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 08:01:31" (1/1) ... [2020-10-14 20:01:31,300 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 08:01:31" (1/1) ... [2020-10-14 20:01:31,372 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 08:01:31" (1/1) ... [2020-10-14 20:01:31,373 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 08:01:31" (1/1) ... [2020-10-14 20:01:31,532 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 08:01:31" (1/1) ... [2020-10-14 20:01:31,594 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 08:01:31" (1/1) ... [2020-10-14 20:01:31,652 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 08:01:31" (1/1) ... [2020-10-14 20:01:31,702 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-14 20:01:31,703 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-14 20:01:31,703 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-14 20:01:31,703 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-14 20:01:31,704 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 08:01:31" (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 [2020-10-14 20:01:31,782 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-14 20:01:31,783 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-14 20:01:31,783 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-10-14 20:01:31,783 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2020-10-14 20:01:31,783 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2020-10-14 20:01:31,784 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output4 [2020-10-14 20:01:31,784 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output5 [2020-10-14 20:01:31,785 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-14 20:01:31,785 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-10-14 20:01:31,785 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2020-10-14 20:01:31,785 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2020-10-14 20:01:31,785 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output4 [2020-10-14 20:01:31,786 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output5 [2020-10-14 20:01:31,786 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-14 20:01:31,786 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-14 20:01:31,787 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-14 20:01:31,787 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-14 20:01:31,787 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-14 20:01:31,788 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-14 20:01:38,610 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-14 20:01:38,611 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-14 20:01:38,621 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 08:01:38 BoogieIcfgContainer [2020-10-14 20:01:38,622 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-14 20:01:38,623 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-14 20:01:38,623 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-14 20:01:38,626 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-14 20:01:38,626 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.10 08:01:27" (1/3) ... [2020-10-14 20:01:38,627 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4b7f8300 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 08:01:38, skipping insertion in model container [2020-10-14 20:01:38,627 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 08:01:31" (2/3) ... [2020-10-14 20:01:38,628 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4b7f8300 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 08:01:38, skipping insertion in model container [2020-10-14 20:01:38,628 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 08:01:38" (3/3) ... [2020-10-14 20:01:38,630 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem06_label46.c [2020-10-14 20:01:38,640 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-14 20:01:38,649 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-14 20:01:38,663 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-14 20:01:38,692 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-14 20:01:38,692 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-14 20:01:38,692 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-14 20:01:38,692 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-14 20:01:38,692 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-14 20:01:38,692 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-14 20:01:38,693 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-14 20:01:38,693 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-14 20:01:38,731 INFO L276 IsEmpty]: Start isEmpty. Operand 1315 states. [2020-10-14 20:01:38,785 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 997 [2020-10-14 20:01:38,785 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 20:01:38,787 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 20:01:38,788 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_output5Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 20:01:38,794 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 20:01:38,795 INFO L82 PathProgramCache]: Analyzing trace with hash 283984039, now seen corresponding path program 1 times [2020-10-14 20:01:38,804 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 20:01:38,804 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1652011234] [2020-10-14 20:01:38,805 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 20:01:39,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 20:01:40,443 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 20:01:41,702 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 20:01:44,860 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 20:01:44,860 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1012 [2020-10-14 20:01:44,861 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 20:01:44,861 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5044 [2020-10-14 20:01:44,864 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 20:01:44,864 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 20:01:44,864 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-10-14 20:01:44,865 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 20:01:44,865 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1006 [2020-10-14 20:01:44,865 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-14 20:01:46,189 WARN L193 SmtUtils]: Spent 174.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-14 20:01:46,191 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 20:01:46,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 20:01:46,204 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 20:01:46,222 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 20:01:46,223 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 20:01:46,223 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 20:01:46,223 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-10-14 20:01:46,223 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 20:01:46,224 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 20:01:46,224 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 20:01:46,224 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 20:01:46,224 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 20:01:46,225 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 20:01:47,468 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 20:01:47,468 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1652011234] [2020-10-14 20:01:47,470 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 20:01:47,470 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-14 20:01:47,471 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1249561505] [2020-10-14 20:01:47,478 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-14 20:01:47,479 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 20:01:47,490 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-14 20:01:47,491 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 20:01:47,492 INFO L87 Difference]: Start difference. First operand 1315 states. Second operand 4 states. [2020-10-14 20:01:47,712 WARN L193 SmtUtils]: Spent 162.00 ms on a formula simplification that was a NOOP. DAG size: 129 [2020-10-14 20:02:01,290 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 20:02:01,291 INFO L93 Difference]: Finished difference Result 3786 states and 7059 transitions. [2020-10-14 20:02:01,292 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 20:02:01,294 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 996 [2020-10-14 20:02:01,300 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 20:02:01,340 INFO L225 Difference]: With dead ends: 3786 [2020-10-14 20:02:01,340 INFO L226 Difference]: Without dead ends: 2407 [2020-10-14 20:02:01,351 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-14 20:02:01,375 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2407 states. [2020-10-14 20:02:01,508 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2407 to 2352. [2020-10-14 20:02:01,509 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2352 states. [2020-10-14 20:02:01,523 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2352 states to 2352 states and 3984 transitions. [2020-10-14 20:02:01,525 INFO L78 Accepts]: Start accepts. Automaton has 2352 states and 3984 transitions. Word has length 996 [2020-10-14 20:02:01,528 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 20:02:01,529 INFO L479 AbstractCegarLoop]: Abstraction has 2352 states and 3984 transitions. [2020-10-14 20:02:01,529 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-14 20:02:01,529 INFO L276 IsEmpty]: Start isEmpty. Operand 2352 states and 3984 transitions. [2020-10-14 20:02:01,571 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1005 [2020-10-14 20:02:01,571 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 20:02:01,572 INFO L422 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 20:02:01,573 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-14 20:02:01,573 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_output5Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 20:02:01,574 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 20:02:01,574 INFO L82 PathProgramCache]: Analyzing trace with hash 593402962, now seen corresponding path program 1 times [2020-10-14 20:02:01,575 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 20:02:01,575 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1520061039] [2020-10-14 20:02:01,575 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 20:02:01,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 20:02:01,789 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 20:02:04,365 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 20:02:06,812 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 20:02:06,813 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1022 [2020-10-14 20:02:06,814 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 20:02:06,814 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5077 [2020-10-14 20:02:06,815 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 20:02:06,818 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 20:02:06,819 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-14 20:02:06,819 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 18 [2020-10-14 20:02:06,819 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1003 [2020-10-14 20:02:06,820 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 5 [2020-10-14 20:02:08,125 WARN L193 SmtUtils]: Spent 171.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-14 20:02:08,127 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 20:02:08,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 20:02:08,136 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 20:02:08,148 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 20:02:08,150 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 20:02:08,150 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 20:02:08,150 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-14 20:02:08,151 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 20:02:08,151 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 20:02:08,152 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 20:02:08,152 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 20:02:08,162 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 20:02:08,163 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 12 [2020-10-14 20:02:08,247 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 20:02:08,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 20:02:08,255 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 20:02:08,265 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 20:02:08,266 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 20:02:08,266 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 20:02:08,266 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-14 20:02:08,267 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 20:02:08,267 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 20:02:08,267 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 20:02:08,267 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 20:02:08,268 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 3 [2020-10-14 20:02:08,268 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 20:02:09,728 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 20:02:09,728 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1520061039] [2020-10-14 20:02:09,728 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 20:02:09,729 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-14 20:02:09,729 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1761868393] [2020-10-14 20:02:09,732 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-14 20:02:09,732 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 20:02:09,733 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-14 20:02:09,733 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-14 20:02:09,733 INFO L87 Difference]: Start difference. First operand 2352 states and 3984 transitions. Second operand 6 states. [2020-10-14 20:02:09,879 WARN L193 SmtUtils]: Spent 111.00 ms on a formula simplification that was a NOOP. DAG size: 130 [2020-10-14 20:02:10,077 WARN L193 SmtUtils]: Spent 105.00 ms on a formula simplification that was a NOOP. DAG size: 129 [2020-10-14 20:02:30,761 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 20:02:30,761 INFO L93 Difference]: Finished difference Result 5822 states and 10101 transitions. [2020-10-14 20:02:30,762 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-14 20:02:30,762 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 1004 [2020-10-14 20:02:30,765 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 20:02:30,784 INFO L225 Difference]: With dead ends: 5822 [2020-10-14 20:02:30,784 INFO L226 Difference]: Without dead ends: 3476 [2020-10-14 20:02:30,790 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-10-14 20:02:30,795 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3476 states. [2020-10-14 20:02:30,872 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3476 to 3403. [2020-10-14 20:02:30,873 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3403 states. [2020-10-14 20:02:30,885 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3403 states to 3403 states and 5600 transitions. [2020-10-14 20:02:30,885 INFO L78 Accepts]: Start accepts. Automaton has 3403 states and 5600 transitions. Word has length 1004 [2020-10-14 20:02:30,887 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 20:02:30,888 INFO L479 AbstractCegarLoop]: Abstraction has 3403 states and 5600 transitions. [2020-10-14 20:02:30,888 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-14 20:02:30,888 INFO L276 IsEmpty]: Start isEmpty. Operand 3403 states and 5600 transitions. [2020-10-14 20:02:30,926 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1014 [2020-10-14 20:02:30,926 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 20:02:30,927 INFO L422 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 20:02:30,928 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-14 20:02:30,928 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_output5Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 20:02:30,928 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 20:02:30,928 INFO L82 PathProgramCache]: Analyzing trace with hash 859003472, now seen corresponding path program 1 times [2020-10-14 20:02:30,929 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 20:02:30,929 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1615546013] [2020-10-14 20:02:30,929 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 20:02:31,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 20:02:31,672 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 20:02:32,349 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 20:02:34,292 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 20:02:36,401 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 20:02:36,401 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1031 [2020-10-14 20:02:36,402 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 20:02:36,402 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5051 [2020-10-14 20:02:36,402 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 20:02:36,402 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 20:02:36,402 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-14 20:02:36,403 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 27 [2020-10-14 20:02:36,403 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1003 [2020-10-14 20:02:36,403 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 20:02:37,300 WARN L193 SmtUtils]: Spent 157.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-14 20:02:37,302 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 20:02:37,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 20:02:37,309 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 20:02:37,316 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 20:02:37,317 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 20:02:37,317 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 20:02:37,317 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-14 20:02:37,318 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 20:02:37,318 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 20:02:37,319 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 20:02:37,319 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 20:02:37,319 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 20:02:37,320 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 20:02:37,436 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 20:02:37,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 20:02:37,449 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 20:02:37,474 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 20:02:37,475 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-10-14 20:02:37,475 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 20:02:37,476 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 29 [2020-10-14 20:02:37,476 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 20:02:37,476 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 20:02:37,477 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 20:02:37,477 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 20:02:37,478 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-14 20:02:37,478 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 20:02:39,189 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 13 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 20:02:39,190 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1615546013] [2020-10-14 20:02:39,190 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 20:02:39,191 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-14 20:02:39,191 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [231452638] [2020-10-14 20:02:39,192 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 20:02:39,193 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 20:02:39,193 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 20:02:39,193 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-14 20:02:39,193 INFO L87 Difference]: Start difference. First operand 3403 states and 5600 transitions. Second operand 5 states. [2020-10-14 20:02:39,399 WARN L193 SmtUtils]: Spent 118.00 ms on a formula simplification that was a NOOP. DAG size: 129 [2020-10-14 20:02:55,582 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 20:02:55,583 INFO L93 Difference]: Finished difference Result 10057 states and 16777 transitions. [2020-10-14 20:02:55,584 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 20:02:55,584 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 1013 [2020-10-14 20:02:55,586 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 20:02:55,620 INFO L225 Difference]: With dead ends: 10057 [2020-10-14 20:02:55,620 INFO L226 Difference]: Without dead ends: 6660 [2020-10-14 20:02:55,629 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-14 20:02:55,637 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6660 states. [2020-10-14 20:02:55,781 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6660 to 6596. [2020-10-14 20:02:55,782 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6596 states. [2020-10-14 20:02:55,800 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6596 states to 6596 states and 10395 transitions. [2020-10-14 20:02:55,800 INFO L78 Accepts]: Start accepts. Automaton has 6596 states and 10395 transitions. Word has length 1013 [2020-10-14 20:02:55,802 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 20:02:55,802 INFO L479 AbstractCegarLoop]: Abstraction has 6596 states and 10395 transitions. [2020-10-14 20:02:55,803 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 20:02:55,803 INFO L276 IsEmpty]: Start isEmpty. Operand 6596 states and 10395 transitions. [2020-10-14 20:02:55,834 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1022 [2020-10-14 20:02:55,834 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 20:02:55,835 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 20:02:55,835 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-14 20:02:55,836 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_output5Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 20:02:55,836 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 20:02:55,836 INFO L82 PathProgramCache]: Analyzing trace with hash 1175933812, now seen corresponding path program 1 times [2020-10-14 20:02:55,837 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 20:02:55,837 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1414081930] [2020-10-14 20:02:55,837 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 20:02:55,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 20:02:55,960 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 20:02:56,049 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 20:03:01,032 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 20:03:01,289 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 20:03:01,289 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1041 [2020-10-14 20:03:01,290 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 20:03:01,290 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5354 [2020-10-14 20:03:01,290 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 20:03:01,290 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 20:03:01,290 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-14 20:03:01,291 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 20:03:01,291 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 33 [2020-10-14 20:03:01,291 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 20:03:01,627 WARN L193 SmtUtils]: Spent 109.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-14 20:03:01,629 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 20:03:01,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 20:03:01,638 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 20:03:01,646 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 20:03:01,647 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 20:03:01,647 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 20:03:01,647 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-14 20:03:01,648 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 20:03:01,648 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 20:03:01,648 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 20:03:01,648 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 20:03:01,648 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 20:03:01,649 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 20:03:01,727 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 20:03:01,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 20:03:01,736 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 20:03:01,747 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 20:03:01,772 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 20:03:01,772 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 20:03:01,772 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 20:03:01,772 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 39 [2020-10-14 20:03:01,773 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 20:03:01,773 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 20:03:01,773 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 20:03:01,773 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 20:03:01,773 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-14 20:03:01,774 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 20:03:01,794 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2020-10-14 20:03:01,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 20:03:01,805 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 20:03:01,847 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 20:03:01,847 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-10-14 20:03:01,848 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 20:03:01,848 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 46 [2020-10-14 20:03:01,848 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 20:03:01,848 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 20:03:01,848 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 20:03:01,849 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 20:03:01,849 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-10-14 20:03:01,849 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 20:03:02,448 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 20 proven. 2 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-10-14 20:03:02,448 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1414081930] [2020-10-14 20:03:02,449 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 20:03:02,449 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 20:03:02,449 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2016006164] [2020-10-14 20:03:02,450 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-14 20:03:02,451 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 20:03:02,451 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-14 20:03:02,451 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2020-10-14 20:03:02,451 INFO L87 Difference]: Start difference. First operand 6596 states and 10395 transitions. Second operand 8 states. [2020-10-14 20:03:02,603 WARN L193 SmtUtils]: Spent 116.00 ms on a formula simplification that was a NOOP. DAG size: 129 [2020-10-14 20:03:03,404 WARN L193 SmtUtils]: Spent 119.00 ms on a formula simplification that was a NOOP. DAG size: 130 [2020-10-14 20:03:20,358 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 20:03:20,359 INFO L93 Difference]: Finished difference Result 19756 states and 32039 transitions. [2020-10-14 20:03:20,359 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-14 20:03:20,359 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 1021 [2020-10-14 20:03:20,360 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 20:03:20,422 INFO L225 Difference]: With dead ends: 19756 [2020-10-14 20:03:20,422 INFO L226 Difference]: Without dead ends: 13166 [2020-10-14 20:03:20,449 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=51, Invalid=105, Unknown=0, NotChecked=0, Total=156 [2020-10-14 20:03:20,464 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13166 states. [2020-10-14 20:03:20,816 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13166 to 13047. [2020-10-14 20:03:20,817 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13047 states. [2020-10-14 20:03:20,847 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13047 states to 13047 states and 19736 transitions. [2020-10-14 20:03:20,847 INFO L78 Accepts]: Start accepts. Automaton has 13047 states and 19736 transitions. Word has length 1021 [2020-10-14 20:03:20,848 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 20:03:20,848 INFO L479 AbstractCegarLoop]: Abstraction has 13047 states and 19736 transitions. [2020-10-14 20:03:20,848 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-14 20:03:20,848 INFO L276 IsEmpty]: Start isEmpty. Operand 13047 states and 19736 transitions. [2020-10-14 20:03:20,911 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1028 [2020-10-14 20:03:20,912 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 20:03:20,913 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 20:03:20,913 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-14 20:03:20,913 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_output5Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 20:03:20,913 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 20:03:20,914 INFO L82 PathProgramCache]: Analyzing trace with hash -1402314424, now seen corresponding path program 1 times [2020-10-14 20:03:20,914 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 20:03:20,915 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1088600367] [2020-10-14 20:03:20,915 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 20:03:21,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 20:03:21,042 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 20:03:22,738 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 20:03:26,102 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 20:03:26,102 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1047 [2020-10-14 20:03:26,102 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 20:03:26,103 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5083 [2020-10-14 20:03:26,103 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 20:03:26,103 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 20:03:26,103 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-10-14 20:03:26,103 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 25 [2020-10-14 20:03:26,103 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1021 [2020-10-14 20:03:26,103 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 20:03:27,162 WARN L193 SmtUtils]: Spent 158.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-14 20:03:27,164 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 20:03:27,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 20:03:27,170 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 20:03:27,180 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 20:03:27,181 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 20:03:27,181 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 20:03:27,181 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-14 20:03:27,182 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 20:03:27,182 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 20:03:27,182 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 20:03:27,183 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 20:03:27,183 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 20:03:27,183 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 20:03:27,296 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 20:03:27,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 20:03:27,316 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 20:03:27,345 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 20:03:27,345 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-10-14 20:03:27,346 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 20:03:27,346 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 35 [2020-10-14 20:03:27,346 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 20:03:27,347 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 20:03:27,347 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 20:03:27,347 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 20:03:27,348 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-14 20:03:27,348 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 20:03:27,361 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-10-14 20:03:27,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 20:03:27,377 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 20:03:27,422 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 20:03:27,422 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-10-14 20:03:27,422 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 20:03:27,422 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 50 [2020-10-14 20:03:27,423 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 20:03:27,423 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 20:03:27,423 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 20:03:27,423 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 20:03:27,423 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-10-14 20:03:27,424 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 20:03:29,065 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 22 proven. 13 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-10-14 20:03:29,066 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1088600367] [2020-10-14 20:03:29,066 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 20:03:29,066 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-14 20:03:29,066 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [513030644] [2020-10-14 20:03:29,067 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-14 20:03:29,067 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 20:03:29,068 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-14 20:03:29,068 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-10-14 20:03:29,068 INFO L87 Difference]: Start difference. First operand 13047 states and 19736 transitions. Second operand 6 states. [2020-10-14 20:03:29,275 WARN L193 SmtUtils]: Spent 128.00 ms on a formula simplification that was a NOOP. DAG size: 132 [2020-10-14 20:03:44,835 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 20:03:44,836 INFO L93 Difference]: Finished difference Result 32706 states and 51339 transitions. [2020-10-14 20:03:44,837 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-14 20:03:44,837 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 1027 [2020-10-14 20:03:44,839 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 20:03:44,920 INFO L225 Difference]: With dead ends: 32706 [2020-10-14 20:03:44,920 INFO L226 Difference]: Without dead ends: 19665 [2020-10-14 20:03:44,962 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 7 SyntacticMatches, 7 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-10-14 20:03:44,986 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19665 states. [2020-10-14 20:03:45,470 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19665 to 19564. [2020-10-14 20:03:45,470 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19564 states. [2020-10-14 20:03:45,525 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19564 states to 19564 states and 29558 transitions. [2020-10-14 20:03:45,526 INFO L78 Accepts]: Start accepts. Automaton has 19564 states and 29558 transitions. Word has length 1027 [2020-10-14 20:03:45,528 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 20:03:45,528 INFO L479 AbstractCegarLoop]: Abstraction has 19564 states and 29558 transitions. [2020-10-14 20:03:45,528 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-14 20:03:45,528 INFO L276 IsEmpty]: Start isEmpty. Operand 19564 states and 29558 transitions. [2020-10-14 20:03:45,602 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1029 [2020-10-14 20:03:45,602 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 20:03:45,603 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 20:03:45,603 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-14 20:03:45,603 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_output5Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 20:03:45,603 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 20:03:45,604 INFO L82 PathProgramCache]: Analyzing trace with hash 1558259094, now seen corresponding path program 1 times [2020-10-14 20:03:45,604 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 20:03:45,604 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1706611376] [2020-10-14 20:03:45,605 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 20:03:45,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 20:03:45,741 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 20:03:47,444 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 20:03:51,012 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 20:03:51,012 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1048 [2020-10-14 20:03:51,013 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 20:03:51,013 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5299 [2020-10-14 20:03:51,013 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 20:03:51,013 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 20:03:51,013 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-14 20:03:51,013 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 20:03:51,013 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 40 [2020-10-14 20:03:51,013 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 20:03:51,321 WARN L193 SmtUtils]: Spent 116.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-14 20:03:51,322 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 20:03:51,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 20:03:51,331 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 20:03:51,341 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 20:03:51,342 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 20:03:51,342 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 20:03:51,342 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-14 20:03:51,342 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 20:03:51,342 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 20:03:51,343 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 20:03:51,343 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 20:03:51,343 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 20:03:51,343 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 20:03:51,428 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 20:03:51,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 20:03:51,439 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 20:03:51,477 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 20:03:51,478 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-10-14 20:03:51,478 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 20:03:51,478 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 41 [2020-10-14 20:03:51,478 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 20:03:51,478 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 20:03:51,479 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-14 20:03:51,479 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 20:03:51,479 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-10-14 20:03:51,479 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 20:03:51,529 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2020-10-14 20:03:51,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 20:03:51,541 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 20:03:51,581 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 20:03:51,581 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-10-14 20:03:51,581 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 20:03:51,581 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 44 [2020-10-14 20:03:51,581 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 20:03:51,582 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 20:03:51,582 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 20:03:51,582 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 20:03:51,582 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-10-14 20:03:51,582 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 20:03:52,164 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 25 proven. 12 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-14 20:03:52,164 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1706611376] [2020-10-14 20:03:52,164 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 20:03:52,165 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-10-14 20:03:52,165 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [985171675] [2020-10-14 20:03:52,166 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-14 20:03:52,166 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 20:03:52,167 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-14 20:03:52,167 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2020-10-14 20:03:52,167 INFO L87 Difference]: Start difference. First operand 19564 states and 29558 transitions. Second operand 10 states. [2020-10-14 20:03:52,334 WARN L193 SmtUtils]: Spent 131.00 ms on a formula simplification that was a NOOP. DAG size: 130 [2020-10-14 20:03:52,641 WARN L193 SmtUtils]: Spent 139.00 ms on a formula simplification that was a NOOP. DAG size: 137 [2020-10-14 20:03:53,178 WARN L193 SmtUtils]: Spent 276.00 ms on a formula simplification. DAG size of input: 134 DAG size of output: 133 [2020-10-14 20:03:55,028 WARN L193 SmtUtils]: Spent 132.00 ms on a formula simplification that was a NOOP. DAG size: 134 [2020-10-14 20:04:08,462 WARN L193 SmtUtils]: Spent 122.00 ms on a formula simplification that was a NOOP. DAG size: 130 [2020-10-14 20:04:32,130 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 20:04:32,132 INFO L93 Difference]: Finished difference Result 81155 states and 142507 transitions. [2020-10-14 20:04:32,133 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2020-10-14 20:04:32,133 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 1028 [2020-10-14 20:04:32,133 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 20:04:32,438 INFO L225 Difference]: With dead ends: 81155 [2020-10-14 20:04:32,438 INFO L226 Difference]: Without dead ends: 61597 [2020-10-14 20:04:32,522 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 259 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=241, Invalid=815, Unknown=0, NotChecked=0, Total=1056 [2020-10-14 20:04:32,589 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61597 states. [2020-10-14 20:04:34,185 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61597 to 60063. [2020-10-14 20:04:34,186 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 60063 states. [2020-10-14 20:04:34,315 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60063 states to 60063 states and 90910 transitions. [2020-10-14 20:04:34,315 INFO L78 Accepts]: Start accepts. Automaton has 60063 states and 90910 transitions. Word has length 1028 [2020-10-14 20:04:34,315 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 20:04:34,316 INFO L479 AbstractCegarLoop]: Abstraction has 60063 states and 90910 transitions. [2020-10-14 20:04:34,316 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-14 20:04:34,316 INFO L276 IsEmpty]: Start isEmpty. Operand 60063 states and 90910 transitions. [2020-10-14 20:04:36,455 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1034 [2020-10-14 20:04:36,455 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 20:04:36,456 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 20:04:36,456 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-14 20:04:36,456 INFO L427 AbstractCegarLoop]: === Iteration 7 === [calculate_output5Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 20:04:36,458 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 20:04:36,459 INFO L82 PathProgramCache]: Analyzing trace with hash 1460420785, now seen corresponding path program 1 times [2020-10-14 20:04:36,459 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 20:04:36,459 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [204547837] [2020-10-14 20:04:36,460 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 20:04:36,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 20:04:36,686 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 20:04:37,089 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 20:04:38,498 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 20:04:41,689 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 20:04:41,689 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1055 [2020-10-14 20:04:41,689 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 20:04:41,689 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5077 [2020-10-14 20:04:41,689 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 20:04:41,689 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 20:04:41,690 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 20:04:41,690 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 33 [2020-10-14 20:04:41,690 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 19 [2020-10-14 20:04:41,690 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 20:04:41,956 WARN L193 SmtUtils]: Spent 118.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-14 20:04:41,957 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 20:04:41,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 20:04:41,965 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 20:04:41,970 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 20:04:41,970 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 20:04:41,970 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 20:04:41,970 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-14 20:04:41,971 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 20:04:41,971 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 20:04:41,971 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 20:04:41,971 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 20:04:41,971 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 20:04:41,972 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 20:04:42,071 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 20:04:42,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 20:04:42,075 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 20:04:42,082 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 20:04:42,083 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-10-14 20:04:42,083 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 20:04:42,083 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-14 20:04:42,083 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 20:04:42,083 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 20:04:42,084 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 20:04:42,084 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 20:04:42,084 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 20:04:42,084 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 20:04:42,088 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2020-10-14 20:04:42,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 20:04:42,095 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 20:04:42,105 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 20:04:42,105 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 20:04:42,106 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 20:04:42,106 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-14 20:04:42,107 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 20:04:42,107 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 20:04:42,107 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 20:04:42,107 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 20:04:42,107 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-10-14 20:04:42,107 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 20:04:42,113 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-10-14 20:04:42,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 20:04:42,124 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 20:04:42,163 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 20:04:42,163 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-10-14 20:04:42,163 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 20:04:42,163 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 42 [2020-10-14 20:04:42,164 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 20:04:42,164 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 20:04:42,164 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 20:04:42,164 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 20:04:42,165 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-10-14 20:04:42,165 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 20:04:42,748 INFO L134 CoverageAnalysis]: Checked inductivity of 58 backedges. 48 proven. 2 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-10-14 20:04:42,748 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [204547837] [2020-10-14 20:04:42,748 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 20:04:42,749 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 20:04:42,749 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [329506879] [2020-10-14 20:04:42,750 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 20:04:42,750 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 20:04:42,750 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 20:04:42,750 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-14 20:04:42,750 INFO L87 Difference]: Start difference. First operand 60063 states and 90910 transitions. Second operand 7 states. [2020-10-14 20:04:42,920 WARN L193 SmtUtils]: Spent 136.00 ms on a formula simplification that was a NOOP. DAG size: 134 [2020-10-14 20:04:43,973 WARN L193 SmtUtils]: Spent 140.00 ms on a formula simplification that was a NOOP. DAG size: 134 [2020-10-14 20:05:01,628 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 20:05:01,629 INFO L93 Difference]: Finished difference Result 172537 states and 281506 transitions. [2020-10-14 20:05:01,629 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-14 20:05:01,629 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 1033 [2020-10-14 20:05:01,630 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 20:05:02,092 INFO L225 Difference]: With dead ends: 172537 [2020-10-14 20:05:02,092 INFO L226 Difference]: Without dead ends: 112480 [2020-10-14 20:05:02,220 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2020-10-14 20:05:02,333 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 112480 states.