/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/Problem03_label37.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-14 19:14:10,928 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-14 19:14:10,931 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-14 19:14:10,959 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-14 19:14:10,960 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-14 19:14:10,968 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-14 19:14:10,970 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-14 19:14:10,972 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-14 19:14:10,974 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-14 19:14:10,978 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-14 19:14:10,979 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-14 19:14:10,980 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-14 19:14:10,981 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-14 19:14:10,982 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-14 19:14:10,985 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-14 19:14:10,987 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-14 19:14:10,989 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-14 19:14:10,992 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-14 19:14:10,995 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-14 19:14:11,001 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-14 19:14:11,004 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-14 19:14:11,006 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-14 19:14:11,006 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-14 19:14:11,008 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-14 19:14:11,019 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-14 19:14:11,019 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-14 19:14:11,020 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-14 19:14:11,020 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-14 19:14:11,021 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-14 19:14:11,024 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-14 19:14:11,024 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-14 19:14:11,025 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-14 19:14:11,026 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-14 19:14:11,027 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-14 19:14:11,028 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-14 19:14:11,028 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-14 19:14:11,029 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-14 19:14:11,029 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-14 19:14:11,029 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-14 19:14:11,030 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-14 19:14:11,031 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-14 19:14:11,032 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 19:14:11,077 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-14 19:14:11,078 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-14 19:14:11,080 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-14 19:14:11,080 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-14 19:14:11,080 INFO L138 SettingsManager]: * Use SBE=true [2020-10-14 19:14:11,081 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-14 19:14:11,081 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-14 19:14:11,081 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-14 19:14:11,081 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-14 19:14:11,081 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-14 19:14:11,082 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-14 19:14:11,083 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-14 19:14:11,083 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-14 19:14:11,083 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-14 19:14:11,084 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-14 19:14:11,084 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-14 19:14:11,084 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-14 19:14:11,084 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-14 19:14:11,084 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-14 19:14:11,085 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-14 19:14:11,085 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-14 19:14:11,085 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-14 19:14:11,085 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-14 19:14:11,085 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-14 19:14:11,085 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-14 19:14:11,086 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-14 19:14:11,086 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-14 19:14:11,086 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-14 19:14:11,086 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-14 19:14:11,086 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 19:14:11,439 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-14 19:14:11,451 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-14 19:14:11,455 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-14 19:14:11,459 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-14 19:14:11,461 INFO L275 PluginConnector]: CDTParser initialized [2020-10-14 19:14:11,462 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem03_label37.c [2020-10-14 19:14:11,523 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/4fa18b11e/550ebcf13b49423e90105469382ccfb6/FLAG8ae5ed4b9 [2020-10-14 19:14:12,150 INFO L306 CDTParser]: Found 1 translation units. [2020-10-14 19:14:12,151 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem03_label37.c [2020-10-14 19:14:12,167 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/4fa18b11e/550ebcf13b49423e90105469382ccfb6/FLAG8ae5ed4b9 [2020-10-14 19:14:12,285 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/4fa18b11e/550ebcf13b49423e90105469382ccfb6 [2020-10-14 19:14:12,293 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-14 19:14:12,295 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-14 19:14:12,296 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-14 19:14:12,296 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-14 19:14:12,300 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-14 19:14:12,301 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 07:14:12" (1/1) ... [2020-10-14 19:14:12,304 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@58c76ad4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 07:14:12, skipping insertion in model container [2020-10-14 19:14:12,304 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 07:14:12" (1/1) ... [2020-10-14 19:14:12,313 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-14 19:14:12,398 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-14 19:14:13,310 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-14 19:14:13,324 INFO L203 MainTranslator]: Completed pre-run [2020-10-14 19:14:13,632 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-14 19:14:13,659 INFO L208 MainTranslator]: Completed translation [2020-10-14 19:14:13,661 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 07:14:13 WrapperNode [2020-10-14 19:14:13,661 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-14 19:14:13,662 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-14 19:14:13,662 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-14 19:14:13,663 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-14 19:14:13,678 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 07:14:13" (1/1) ... [2020-10-14 19:14:13,680 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 07:14:13" (1/1) ... [2020-10-14 19:14:13,735 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 07:14:13" (1/1) ... [2020-10-14 19:14:13,737 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 07:14:13" (1/1) ... [2020-10-14 19:14:13,829 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 07:14:13" (1/1) ... [2020-10-14 19:14:13,844 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 07:14:13" (1/1) ... [2020-10-14 19:14:13,860 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 07:14:13" (1/1) ... [2020-10-14 19:14:13,877 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-14 19:14:13,878 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-14 19:14:13,878 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-14 19:14:13,878 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-14 19:14:13,879 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 07:14:13" (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 19:14:13,964 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-14 19:14:13,964 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-14 19:14:13,965 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-10-14 19:14:13,965 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-14 19:14:13,965 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-10-14 19:14:13,965 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-14 19:14:13,966 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-14 19:14:13,966 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-14 19:14:13,966 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-14 19:14:13,966 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-14 19:14:13,966 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-14 19:14:16,038 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-14 19:14:16,038 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-14 19:14:16,045 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 07:14:16 BoogieIcfgContainer [2020-10-14 19:14:16,046 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-14 19:14:16,047 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-14 19:14:16,047 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-14 19:14:16,050 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-14 19:14:16,051 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.10 07:14:12" (1/3) ... [2020-10-14 19:14:16,052 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@78e18296 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 07:14:16, skipping insertion in model container [2020-10-14 19:14:16,052 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 07:14:13" (2/3) ... [2020-10-14 19:14:16,053 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@78e18296 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 07:14:16, skipping insertion in model container [2020-10-14 19:14:16,053 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 07:14:16" (3/3) ... [2020-10-14 19:14:16,055 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem03_label37.c [2020-10-14 19:14:16,066 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-14 19:14:16,074 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-14 19:14:16,089 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-14 19:14:16,116 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-14 19:14:16,117 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-14 19:14:16,117 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-14 19:14:16,117 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-14 19:14:16,117 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-14 19:14:16,117 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-14 19:14:16,118 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-14 19:14:16,118 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-14 19:14:16,142 INFO L276 IsEmpty]: Start isEmpty. Operand 311 states. [2020-10-14 19:14:16,156 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 156 [2020-10-14 19:14:16,157 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 19:14:16,158 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] [2020-10-14 19:14:16,158 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 19:14:16,165 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 19:14:16,165 INFO L82 PathProgramCache]: Analyzing trace with hash 1032211664, now seen corresponding path program 1 times [2020-10-14 19:14:16,174 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 19:14:16,175 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [943311185] [2020-10-14 19:14:16,175 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 19:14:16,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:14:16,783 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:14:17,298 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:14:20,236 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:14:20,237 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 163 [2020-10-14 19:14:20,237 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 19:14:20,237 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3648 [2020-10-14 19:14:20,240 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:14:20,240 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:14:20,241 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 19:14:20,241 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 19:14:20,241 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 157 [2020-10-14 19:14:20,241 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-14 19:14:20,584 WARN L193 SmtUtils]: Spent 149.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-14 19:14:20,588 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 19:14:20,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:14:20,606 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:14:20,623 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:14:20,623 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 19:14:20,623 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 19:14:20,624 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-10-14 19:14:20,624 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:14:20,624 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:14:20,624 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 19:14:20,625 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 19:14:20,625 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 19:14:20,626 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 19:14:20,735 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 19:14:20,736 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [943311185] [2020-10-14 19:14:20,739 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 19:14:20,739 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-14 19:14:20,740 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [157852298] [2020-10-14 19:14:20,748 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-14 19:14:20,749 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 19:14:20,765 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-14 19:14:20,766 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 19:14:20,768 INFO L87 Difference]: Start difference. First operand 311 states. Second operand 4 states. [2020-10-14 19:14:20,965 WARN L193 SmtUtils]: Spent 133.00 ms on a formula simplification that was a NOOP. DAG size: 129 [2020-10-14 19:14:23,880 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 19:14:23,881 INFO L93 Difference]: Finished difference Result 886 states and 1538 transitions. [2020-10-14 19:14:23,882 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 19:14:23,883 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 155 [2020-10-14 19:14:23,884 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 19:14:23,903 INFO L225 Difference]: With dead ends: 886 [2020-10-14 19:14:23,903 INFO L226 Difference]: Without dead ends: 482 [2020-10-14 19:14:23,911 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 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 19:14:23,936 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 482 states. [2020-10-14 19:14:23,997 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 482 to 476. [2020-10-14 19:14:23,998 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 476 states. [2020-10-14 19:14:24,005 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 476 states to 476 states and 724 transitions. [2020-10-14 19:14:24,007 INFO L78 Accepts]: Start accepts. Automaton has 476 states and 724 transitions. Word has length 155 [2020-10-14 19:14:24,008 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 19:14:24,008 INFO L479 AbstractCegarLoop]: Abstraction has 476 states and 724 transitions. [2020-10-14 19:14:24,008 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-14 19:14:24,008 INFO L276 IsEmpty]: Start isEmpty. Operand 476 states and 724 transitions. [2020-10-14 19:14:24,018 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 168 [2020-10-14 19:14:24,019 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 19:14:24,019 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-10-14 19:14:24,020 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-14 19:14:24,020 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 19:14:24,024 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 19:14:24,024 INFO L82 PathProgramCache]: Analyzing trace with hash -1492195356, now seen corresponding path program 1 times [2020-10-14 19:14:24,024 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 19:14:24,024 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1570885786] [2020-10-14 19:14:24,025 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 19:14:24,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:14:24,223 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:14:24,391 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:14:27,133 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:14:27,134 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 177 [2020-10-14 19:14:27,134 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 19:14:27,135 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2992 [2020-10-14 19:14:27,135 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:14:27,136 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:14:27,136 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 19:14:27,136 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 22 [2020-10-14 19:14:27,136 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 154 [2020-10-14 19:14:27,137 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 19:14:27,410 WARN L193 SmtUtils]: Spent 118.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-14 19:14:27,411 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 19:14:27,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:14:27,424 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:14:27,434 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:14:27,434 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 19:14:27,435 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 19:14:27,435 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-14 19:14:27,435 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:14:27,435 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:14:27,436 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 19:14:27,436 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 19:14:27,436 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 19:14:27,437 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 19:14:27,520 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 19:14:27,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:14:27,530 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:14:27,549 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:14:27,550 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-10-14 19:14:27,550 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 19:14:27,558 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-10-14 19:14:27,558 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:14:27,559 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:14:27,559 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 19:14:27,559 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 19:14:27,559 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-14 19:14:27,559 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 19:14:27,623 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 8 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 19:14:27,624 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1570885786] [2020-10-14 19:14:27,624 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 19:14:27,624 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-14 19:14:27,624 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1454461093] [2020-10-14 19:14:27,627 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 19:14:27,628 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 19:14:27,628 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 19:14:27,628 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-14 19:14:27,628 INFO L87 Difference]: Start difference. First operand 476 states and 724 transitions. Second operand 5 states. [2020-10-14 19:14:27,929 WARN L193 SmtUtils]: Spent 159.00 ms on a formula simplification that was a NOOP. DAG size: 129 [2020-10-14 19:14:30,847 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 19:14:30,848 INFO L93 Difference]: Finished difference Result 1383 states and 2137 transitions. [2020-10-14 19:14:30,849 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 19:14:30,850 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 167 [2020-10-14 19:14:30,851 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 19:14:30,859 INFO L225 Difference]: With dead ends: 1383 [2020-10-14 19:14:30,859 INFO L226 Difference]: Without dead ends: 913 [2020-10-14 19:14:30,862 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-14 19:14:30,864 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 913 states. [2020-10-14 19:14:30,910 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 913 to 896. [2020-10-14 19:14:30,910 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 896 states. [2020-10-14 19:14:30,915 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 896 states to 896 states and 1350 transitions. [2020-10-14 19:14:30,916 INFO L78 Accepts]: Start accepts. Automaton has 896 states and 1350 transitions. Word has length 167 [2020-10-14 19:14:30,916 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 19:14:30,916 INFO L479 AbstractCegarLoop]: Abstraction has 896 states and 1350 transitions. [2020-10-14 19:14:30,916 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 19:14:30,917 INFO L276 IsEmpty]: Start isEmpty. Operand 896 states and 1350 transitions. [2020-10-14 19:14:30,922 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 183 [2020-10-14 19:14:30,922 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 19:14:30,922 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 19:14:30,923 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-14 19:14:30,923 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 19:14:30,923 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 19:14:30,923 INFO L82 PathProgramCache]: Analyzing trace with hash 1922297015, now seen corresponding path program 1 times [2020-10-14 19:14:30,924 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 19:14:30,924 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [772409954] [2020-10-14 19:14:30,924 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 19:14:30,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:14:30,993 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:14:31,668 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:14:32,661 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:14:32,662 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 192 [2020-10-14 19:14:32,662 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 19:14:32,662 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1692 [2020-10-14 19:14:32,662 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:14:32,663 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:14:32,663 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-14 19:14:32,663 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 19:14:32,663 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 186 [2020-10-14 19:14:32,663 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 19:14:32,897 WARN L193 SmtUtils]: Spent 101.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-14 19:14:32,898 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 19:14:32,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:14:32,908 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:14:32,922 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:14:32,922 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 19:14:32,923 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 19:14:32,923 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-14 19:14:32,923 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:14:32,923 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:14:32,924 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 19:14:32,924 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 19:14:32,924 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 19:14:32,924 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 19:14:33,019 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 19:14:33,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:14:33,041 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:14:33,076 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:14:33,161 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:14:33,162 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 28 [2020-10-14 19:14:33,162 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 19:14:33,162 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 128 [2020-10-14 19:14:33,162 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:14:33,163 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:14:33,163 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 19:14:33,163 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 19:14:33,163 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-10-14 19:14:33,163 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 19:14:33,246 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-10-14 19:14:33,247 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [772409954] [2020-10-14 19:14:33,247 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 19:14:33,248 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-14 19:14:33,248 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [709521736] [2020-10-14 19:14:33,249 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-14 19:14:33,249 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 19:14:33,249 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-14 19:14:33,250 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-10-14 19:14:33,250 INFO L87 Difference]: Start difference. First operand 896 states and 1350 transitions. Second operand 6 states. [2020-10-14 19:14:33,384 WARN L193 SmtUtils]: Spent 108.00 ms on a formula simplification that was a NOOP. DAG size: 129 [2020-10-14 19:14:36,122 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 19:14:36,123 INFO L93 Difference]: Finished difference Result 2672 states and 4163 transitions. [2020-10-14 19:14:36,125 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-14 19:14:36,125 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 182 [2020-10-14 19:14:36,125 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 19:14:36,142 INFO L225 Difference]: With dead ends: 2672 [2020-10-14 19:14:36,142 INFO L226 Difference]: Without dead ends: 1782 [2020-10-14 19:14:36,146 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-10-14 19:14:36,149 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1782 states. [2020-10-14 19:14:36,232 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1782 to 1761. [2020-10-14 19:14:36,232 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1761 states. [2020-10-14 19:14:36,242 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1761 states to 1761 states and 2567 transitions. [2020-10-14 19:14:36,242 INFO L78 Accepts]: Start accepts. Automaton has 1761 states and 2567 transitions. Word has length 182 [2020-10-14 19:14:36,242 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 19:14:36,243 INFO L479 AbstractCegarLoop]: Abstraction has 1761 states and 2567 transitions. [2020-10-14 19:14:36,243 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-14 19:14:36,243 INFO L276 IsEmpty]: Start isEmpty. Operand 1761 states and 2567 transitions. [2020-10-14 19:14:36,250 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 191 [2020-10-14 19:14:36,250 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 19:14:36,250 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 19:14:36,251 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-14 19:14:36,251 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 19:14:36,251 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 19:14:36,251 INFO L82 PathProgramCache]: Analyzing trace with hash 1539429915, now seen corresponding path program 1 times [2020-10-14 19:14:36,252 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 19:14:36,252 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [781483220] [2020-10-14 19:14:36,252 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 19:14:36,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:14:36,334 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:14:36,431 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:14:38,251 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:14:41,308 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:14:41,309 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 202 [2020-10-14 19:14:41,309 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 19:14:41,309 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5005 [2020-10-14 19:14:41,310 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:14:41,310 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:14:41,310 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 19:14:41,311 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 47 [2020-10-14 19:14:41,311 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 154 [2020-10-14 19:14:41,311 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 19:14:41,639 WARN L193 SmtUtils]: Spent 144.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-14 19:14:41,641 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 19:14:41,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:14:41,648 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:14:41,655 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:14:41,656 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 19:14:41,656 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 19:14:41,657 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-14 19:14:41,657 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:14:41,658 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:14:41,658 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 19:14:41,659 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 19:14:41,659 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 19:14:41,659 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-14 19:14:41,771 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 19:14:41,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:14:41,781 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:14:41,795 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:14:41,795 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-10-14 19:14:41,795 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 19:14:41,796 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-14 19:14:41,796 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:14:41,797 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:14:41,797 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 19:14:41,797 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 19:14:41,798 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 19:14:41,798 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 19:14:41,805 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2020-10-14 19:14:41,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:14:41,830 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:14:41,877 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:14:41,877 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 24 [2020-10-14 19:14:41,877 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 19:14:41,878 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 57 [2020-10-14 19:14:41,878 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:14:41,878 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:14:41,878 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 19:14:41,880 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 19:14:41,880 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-14 19:14:41,880 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-14 19:14:41,994 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 30 proven. 2 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2020-10-14 19:14:41,995 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [781483220] [2020-10-14 19:14:41,996 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 19:14:41,996 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-14 19:14:41,996 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [337555993] [2020-10-14 19:14:41,997 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 19:14:41,998 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 19:14:41,998 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 19:14:41,998 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-14 19:14:41,998 INFO L87 Difference]: Start difference. First operand 1761 states and 2567 transitions. Second operand 5 states. [2020-10-14 19:14:42,133 WARN L193 SmtUtils]: Spent 107.00 ms on a formula simplification that was a NOOP. DAG size: 132 [2020-10-14 19:14:45,080 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 19:14:45,082 INFO L93 Difference]: Finished difference Result 4361 states and 6491 transitions. [2020-10-14 19:14:45,083 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 19:14:45,083 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 190 [2020-10-14 19:14:45,084 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 19:14:45,102 INFO L225 Difference]: With dead ends: 4361 [2020-10-14 19:14:45,103 INFO L226 Difference]: Without dead ends: 2606 [2020-10-14 19:14:45,109 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 7 SyntacticMatches, 2 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-14 19:14:45,113 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2606 states. [2020-10-14 19:14:45,208 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2606 to 2600. [2020-10-14 19:14:45,208 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2600 states. [2020-10-14 19:14:45,223 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2600 states to 2600 states and 3746 transitions. [2020-10-14 19:14:45,223 INFO L78 Accepts]: Start accepts. Automaton has 2600 states and 3746 transitions. Word has length 190 [2020-10-14 19:14:45,224 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 19:14:45,225 INFO L479 AbstractCegarLoop]: Abstraction has 2600 states and 3746 transitions. [2020-10-14 19:14:45,225 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 19:14:45,225 INFO L276 IsEmpty]: Start isEmpty. Operand 2600 states and 3746 transitions. [2020-10-14 19:14:45,232 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 195 [2020-10-14 19:14:45,232 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 19:14:45,233 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 19:14:45,233 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-14 19:14:45,233 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 19:14:45,233 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 19:14:45,234 INFO L82 PathProgramCache]: Analyzing trace with hash -1277754077, now seen corresponding path program 1 times [2020-10-14 19:14:45,234 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 19:14:45,234 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1880873273] [2020-10-14 19:14:45,234 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 19:14:45,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:14:45,314 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:14:45,401 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:14:47,084 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:14:49,759 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:14:49,760 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 206 [2020-10-14 19:14:49,760 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 19:14:49,760 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4469 [2020-10-14 19:14:49,760 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:14:49,760 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:14:49,760 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 19:14:49,761 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 22 [2020-10-14 19:14:49,761 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 183 [2020-10-14 19:14:49,761 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 19:14:49,983 WARN L193 SmtUtils]: Spent 121.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-14 19:14:49,984 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 19:14:49,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:14:49,989 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:14:49,994 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:14:49,995 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 19:14:49,995 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 19:14:49,995 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-14 19:14:49,995 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:14:49,995 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:14:49,996 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 19:14:49,996 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 19:14:49,996 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 19:14:49,996 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 19:14:50,083 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 19:14:50,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:14:50,094 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:14:50,112 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:14:50,112 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-10-14 19:14:50,113 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 19:14:50,113 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-10-14 19:14:50,113 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:14:50,113 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:14:50,113 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 19:14:50,114 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 19:14:50,114 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-14 19:14:50,114 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 19:14:50,120 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2020-10-14 19:14:50,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:14:50,147 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:14:50,168 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:14:50,283 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:14:50,283 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 28 [2020-10-14 19:14:50,283 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 19:14:50,284 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 144 [2020-10-14 19:14:50,284 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:14:50,284 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:14:50,284 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 19:14:50,284 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 19:14:50,285 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-10-14 19:14:50,285 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 19:14:50,379 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 16 proven. 24 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-10-14 19:14:50,379 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1880873273] [2020-10-14 19:14:50,380 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 19:14:50,380 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 19:14:50,380 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1352906987] [2020-10-14 19:14:50,381 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 19:14:50,381 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 19:14:50,381 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 19:14:50,381 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 19:14:50,382 INFO L87 Difference]: Start difference. First operand 2600 states and 3746 transitions. Second operand 7 states. [2020-10-14 19:14:50,645 WARN L193 SmtUtils]: Spent 113.00 ms on a formula simplification that was a NOOP. DAG size: 129 [2020-10-14 19:14:55,503 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 19:14:55,504 INFO L93 Difference]: Finished difference Result 10599 states and 17248 transitions. [2020-10-14 19:14:55,504 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-14 19:14:55,504 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 194 [2020-10-14 19:14:55,505 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 19:14:55,573 INFO L225 Difference]: With dead ends: 10599 [2020-10-14 19:14:55,573 INFO L226 Difference]: Without dead ends: 8005 [2020-10-14 19:14:55,586 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-14 19:14:55,596 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8005 states. [2020-10-14 19:14:55,900 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8005 to 7850. [2020-10-14 19:14:55,900 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7850 states. [2020-10-14 19:14:55,925 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7850 states to 7850 states and 11515 transitions. [2020-10-14 19:14:55,926 INFO L78 Accepts]: Start accepts. Automaton has 7850 states and 11515 transitions. Word has length 194 [2020-10-14 19:14:55,926 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 19:14:55,926 INFO L479 AbstractCegarLoop]: Abstraction has 7850 states and 11515 transitions. [2020-10-14 19:14:55,926 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 19:14:55,926 INFO L276 IsEmpty]: Start isEmpty. Operand 7850 states and 11515 transitions. [2020-10-14 19:14:55,953 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 205 [2020-10-14 19:14:55,953 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 19:14:55,954 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 19:14:55,954 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-14 19:14:55,954 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 19:14:55,954 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 19:14:55,955 INFO L82 PathProgramCache]: Analyzing trace with hash 720762236, now seen corresponding path program 1 times [2020-10-14 19:14:55,955 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 19:14:55,955 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1655355886] [2020-10-14 19:14:55,955 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 19:14:55,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:14:56,019 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:14:56,077 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:14:56,196 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:14:56,252 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:14:56,405 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:14:56,731 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:14:57,306 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:14:58,667 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:15:00,682 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:15:00,683 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 218 [2020-10-14 19:15:00,683 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-10-14 19:15:00,683 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4684 [2020-10-14 19:15:00,683 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:15:00,683 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:15:00,683 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 19:15:00,684 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 33 [2020-10-14 19:15:00,684 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 184 [2020-10-14 19:15:00,684 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 19:15:00,875 WARN L193 SmtUtils]: Spent 104.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-14 19:15:00,876 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 19:15:00,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:15:00,881 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:15:00,886 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:15:00,887 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 19:15:00,887 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 19:15:00,887 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-14 19:15:00,887 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:15:00,888 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:15:00,888 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 19:15:00,888 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 19:15:00,888 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 19:15:00,888 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 19:15:00,961 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 19:15:00,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:15:00,965 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:15:00,970 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:15:00,970 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-10-14 19:15:00,971 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 19:15:00,971 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-14 19:15:00,971 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:15:00,971 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:15:00,971 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 19:15:00,971 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 19:15:00,971 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 19:15:00,971 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 19:15:00,974 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2020-10-14 19:15:00,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:15:00,980 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:15:00,985 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:15:00,993 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:15:00,993 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-14 19:15:00,993 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 19:15:00,993 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-14 19:15:00,994 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:15:00,994 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:15:00,994 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 19:15:00,994 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 19:15:00,994 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-10-14 19:15:00,995 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 19:15:00,999 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-10-14 19:15:01,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:15:01,024 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:15:01,044 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:15:01,068 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:15:01,069 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 28 [2020-10-14 19:15:01,069 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 19:15:01,069 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 49 [2020-10-14 19:15:01,069 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:15:01,069 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:15:01,069 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 19:15:01,069 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 19:15:01,069 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 25 [2020-10-14 19:15:01,070 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 19:15:01,140 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 42 proven. 5 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2020-10-14 19:15:01,140 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1655355886] [2020-10-14 19:15:01,141 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 19:15:01,141 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-14 19:15:01,141 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [278672912] [2020-10-14 19:15:01,141 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 19:15:01,142 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 19:15:01,142 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 19:15:01,142 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-14 19:15:01,142 INFO L87 Difference]: Start difference. First operand 7850 states and 11515 transitions. Second operand 5 states. [2020-10-14 19:15:03,847 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 19:15:03,847 INFO L93 Difference]: Finished difference Result 17782 states and 26242 transitions. [2020-10-14 19:15:03,853 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 19:15:03,853 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 204 [2020-10-14 19:15:03,854 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 19:15:03,901 INFO L225 Difference]: With dead ends: 17782 [2020-10-14 19:15:03,901 INFO L226 Difference]: Without dead ends: 7856 [2020-10-14 19:15:03,927 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-14 19:15:03,937 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7856 states. [2020-10-14 19:15:04,171 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7856 to 7848. [2020-10-14 19:15:04,172 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7848 states. [2020-10-14 19:15:04,197 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7848 states to 7848 states and 11511 transitions. [2020-10-14 19:15:04,198 INFO L78 Accepts]: Start accepts. Automaton has 7848 states and 11511 transitions. Word has length 204 [2020-10-14 19:15:04,198 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 19:15:04,198 INFO L479 AbstractCegarLoop]: Abstraction has 7848 states and 11511 transitions. [2020-10-14 19:15:04,198 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 19:15:04,199 INFO L276 IsEmpty]: Start isEmpty. Operand 7848 states and 11511 transitions. [2020-10-14 19:15:04,229 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 219 [2020-10-14 19:15:04,229 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 19:15:04,229 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 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] [2020-10-14 19:15:04,230 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-14 19:15:04,230 INFO L427 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 19:15:04,230 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 19:15:04,230 INFO L82 PathProgramCache]: Analyzing trace with hash -4399047, now seen corresponding path program 1 times [2020-10-14 19:15:04,231 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 19:15:04,233 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1216045647] [2020-10-14 19:15:04,233 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 19:15:04,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:15:04,303 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:15:04,347 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:15:04,419 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:15:04,652 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:15:06,142 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:15:06,355 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:15:09,288 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:15:09,289 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 232 [2020-10-14 19:15:09,289 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-14 19:15:09,289 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5009 [2020-10-14 19:15:09,289 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:15:09,290 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:15:09,290 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-14 19:15:09,290 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 19:15:09,290 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 42 [2020-10-14 19:15:09,290 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 19:15:09,453 WARN L193 SmtUtils]: Spent 104.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-14 19:15:09,453 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 19:15:09,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:15:09,462 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:15:09,469 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:15:09,469 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 19:15:09,469 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 19:15:09,469 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-14 19:15:09,469 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:15:09,469 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:15:09,470 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 19:15:09,470 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 19:15:09,470 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 19:15:09,470 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 19:15:09,545 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 19:15:09,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:15:09,553 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:15:09,563 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:15:09,579 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:15:09,579 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-10-14 19:15:09,580 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 19:15:09,580 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 28 [2020-10-14 19:15:09,580 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:15:09,580 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:15:09,580 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 19:15:09,580 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 19:15:09,581 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-10-14 19:15:09,581 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 19:15:09,597 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2020-10-14 19:15:09,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:15:09,613 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:15:09,661 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:15:09,661 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-10-14 19:15:09,661 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 19:15:09,661 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 54 [2020-10-14 19:15:09,662 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:15:09,662 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:15:09,662 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 19:15:09,662 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 19:15:09,662 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 25 [2020-10-14 19:15:09,662 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 19:15:09,677 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-10-14 19:15:09,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:15:09,692 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:15:09,707 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:15:09,707 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 28 [2020-10-14 19:15:09,707 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 19:15:09,707 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-10-14 19:15:09,707 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:15:09,708 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:15:09,708 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 19:15:09,708 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 25 [2020-10-14 19:15:09,708 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 19:15:09,708 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 19:15:09,813 INFO L134 CoverageAnalysis]: Checked inductivity of 98 backedges. 57 proven. 26 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2020-10-14 19:15:09,814 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1216045647] [2020-10-14 19:15:09,814 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 19:15:09,814 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 19:15:09,814 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [912698343] [2020-10-14 19:15:09,815 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 19:15:09,815 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 19:15:09,815 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 19:15:09,816 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 19:15:09,816 INFO L87 Difference]: Start difference. First operand 7848 states and 11511 transitions. Second operand 7 states. [2020-10-14 19:15:09,953 WARN L193 SmtUtils]: Spent 112.00 ms on a formula simplification that was a NOOP. DAG size: 130 [2020-10-14 19:15:11,571 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 19:15:11,571 INFO L93 Difference]: Finished difference Result 15576 states and 22689 transitions. [2020-10-14 19:15:11,572 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-14 19:15:11,572 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 218 [2020-10-14 19:15:11,572 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 19:15:11,623 INFO L225 Difference]: With dead ends: 15576 [2020-10-14 19:15:11,623 INFO L226 Difference]: Without dead ends: 7770 [2020-10-14 19:15:11,650 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 9 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72 [2020-10-14 19:15:11,662 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7770 states. [2020-10-14 19:15:11,913 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7770 to 7762. [2020-10-14 19:15:11,913 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7762 states. [2020-10-14 19:15:11,937 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7762 states to 7762 states and 11167 transitions. [2020-10-14 19:15:11,937 INFO L78 Accepts]: Start accepts. Automaton has 7762 states and 11167 transitions. Word has length 218 [2020-10-14 19:15:11,938 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 19:15:11,938 INFO L479 AbstractCegarLoop]: Abstraction has 7762 states and 11167 transitions. [2020-10-14 19:15:11,938 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 19:15:11,938 INFO L276 IsEmpty]: Start isEmpty. Operand 7762 states and 11167 transitions. [2020-10-14 19:15:11,976 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 224 [2020-10-14 19:15:11,977 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 19:15:11,977 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 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] [2020-10-14 19:15:11,977 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-14 19:15:11,978 INFO L427 AbstractCegarLoop]: === Iteration 8 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 19:15:11,978 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 19:15:11,978 INFO L82 PathProgramCache]: Analyzing trace with hash 1277683965, now seen corresponding path program 1 times [2020-10-14 19:15:11,979 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 19:15:11,979 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1620068504] [2020-10-14 19:15:11,980 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 19:15:12,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:15:12,066 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:15:12,141 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:15:12,282 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:15:14,490 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:15:17,068 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:15:17,068 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 239 [2020-10-14 19:15:17,068 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 19:15:17,068 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5031 [2020-10-14 19:15:17,068 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:15:17,069 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:15:17,069 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-14 19:15:17,069 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 22 [2020-10-14 19:15:17,069 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 63 [2020-10-14 19:15:17,069 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 19:15:17,232 WARN L193 SmtUtils]: Spent 108.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-14 19:15:17,232 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 19:15:17,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:15:17,238 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:15:17,241 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:15:17,241 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 19:15:17,241 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 19:15:17,241 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-14 19:15:17,242 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:15:17,242 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:15:17,242 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 19:15:17,242 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 19:15:17,242 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 19:15:17,242 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 19:15:17,313 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 19:15:17,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:15:17,320 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:15:17,330 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:15:17,331 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-10-14 19:15:17,331 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 19:15:17,331 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-14 19:15:17,331 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:15:17,331 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:15:17,331 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 19:15:17,331 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 19:15:17,332 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-14 19:15:17,332 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 19:15:17,335 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2020-10-14 19:15:17,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:15:17,340 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:15:17,346 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:15:17,356 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:15:17,356 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-14 19:15:17,356 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 19:15:17,356 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-14 19:15:17,356 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:15:17,357 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:15:17,357 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 19:15:17,357 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 19:15:17,357 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-14 19:15:17,357 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 19:15:17,370 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-10-14 19:15:17,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:15:17,386 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:15:17,399 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:15:17,444 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:15:17,444 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-10-14 19:15:17,444 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 19:15:17,444 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 62 [2020-10-14 19:15:17,445 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:15:17,445 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:15:17,445 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 19:15:17,445 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 19:15:17,445 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-10-14 19:15:17,445 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 19:15:17,459 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2020-10-14 19:15:17,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:15:17,473 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:15:17,514 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:15:17,514 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 28 [2020-10-14 19:15:17,514 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 19:15:17,514 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 45 [2020-10-14 19:15:17,515 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:15:17,515 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:15:17,515 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 19:15:17,515 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 19:15:17,515 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-10-14 19:15:17,515 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 19:15:17,572 INFO L134 CoverageAnalysis]: Checked inductivity of 121 backedges. 81 proven. 18 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2020-10-14 19:15:17,572 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1620068504] [2020-10-14 19:15:17,573 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 19:15:17,573 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-10-14 19:15:17,573 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1555970777] [2020-10-14 19:15:17,574 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-14 19:15:17,574 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 19:15:17,574 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-14 19:15:17,575 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2020-10-14 19:15:17,575 INFO L87 Difference]: Start difference. First operand 7762 states and 11167 transitions. Second operand 9 states. [2020-10-14 19:15:17,717 WARN L193 SmtUtils]: Spent 112.00 ms on a formula simplification that was a NOOP. DAG size: 130 [2020-10-14 19:15:18,013 WARN L193 SmtUtils]: Spent 114.00 ms on a formula simplification that was a NOOP. DAG size: 129 [2020-10-14 19:15:18,995 WARN L193 SmtUtils]: Spent 109.00 ms on a formula simplification that was a NOOP. DAG size: 129 [2020-10-14 19:15:22,103 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 19:15:22,104 INFO L93 Difference]: Finished difference Result 28819 states and 43575 transitions. [2020-10-14 19:15:22,104 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-14 19:15:22,105 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 223 [2020-10-14 19:15:22,105 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 19:15:22,190 INFO L225 Difference]: With dead ends: 28819 [2020-10-14 19:15:22,190 INFO L226 Difference]: Without dead ends: 21067 [2020-10-14 19:15:22,220 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 39 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=86, Invalid=220, Unknown=0, NotChecked=0, Total=306 [2020-10-14 19:15:22,247 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21067 states. [2020-10-14 19:15:22,727 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21067 to 17144. [2020-10-14 19:15:22,728 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17144 states. [2020-10-14 19:15:22,768 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17144 states to 17144 states and 22279 transitions. [2020-10-14 19:15:22,768 INFO L78 Accepts]: Start accepts. Automaton has 17144 states and 22279 transitions. Word has length 223 [2020-10-14 19:15:22,768 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 19:15:22,769 INFO L479 AbstractCegarLoop]: Abstraction has 17144 states and 22279 transitions. [2020-10-14 19:15:22,769 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-14 19:15:22,769 INFO L276 IsEmpty]: Start isEmpty. Operand 17144 states and 22279 transitions. [2020-10-14 19:15:22,815 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 260 [2020-10-14 19:15:22,816 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 19:15:22,816 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 19:15:22,816 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-14 19:15:22,816 INFO L427 AbstractCegarLoop]: === Iteration 9 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 19:15:22,817 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 19:15:22,817 INFO L82 PathProgramCache]: Analyzing trace with hash 1899859865, now seen corresponding path program 1 times [2020-10-14 19:15:22,817 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 19:15:22,818 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [317457902] [2020-10-14 19:15:22,818 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 19:15:22,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:15:22,926 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:15:23,039 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:15:26,187 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:15:26,187 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 271 [2020-10-14 19:15:26,187 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 19:15:26,187 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3302 [2020-10-14 19:15:26,188 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:15:26,188 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:15:26,188 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 19:15:26,188 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 19:15:26,188 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 81 [2020-10-14 19:15:26,188 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 19:15:26,341 WARN L193 SmtUtils]: Spent 105.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-14 19:15:26,342 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 19:15:26,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:15:26,350 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:15:26,357 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:15:26,357 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 19:15:26,357 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 19:15:26,357 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-14 19:15:26,357 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:15:26,357 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:15:26,357 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 19:15:26,358 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 19:15:26,358 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 19:15:26,358 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 19:15:26,443 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 19:15:26,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:15:26,497 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:15:26,652 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:15:26,652 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 78 [2020-10-14 19:15:26,652 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 19:15:26,653 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 176 [2020-10-14 19:15:26,653 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:15:26,653 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:15:26,653 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 19:15:26,653 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 19:15:26,653 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 78 [2020-10-14 19:15:26,654 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 19:15:26,833 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2020-10-14 19:15:26,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:15:26,851 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:15:26,872 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:15:26,872 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 28 [2020-10-14 19:15:26,872 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 19:15:26,872 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 28 [2020-10-14 19:15:26,873 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:15:26,873 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:15:26,873 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 19:15:26,873 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 25 [2020-10-14 19:15:26,873 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 19:15:26,873 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 19:15:27,043 INFO L134 CoverageAnalysis]: Checked inductivity of 123 backedges. 96 proven. 22 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-10-14 19:15:27,043 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [317457902] [2020-10-14 19:15:27,043 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 19:15:27,044 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 19:15:27,044 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [893345506] [2020-10-14 19:15:27,044 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 19:15:27,045 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 19:15:27,045 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 19:15:27,045 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-14 19:15:27,045 INFO L87 Difference]: Start difference. First operand 17144 states and 22279 transitions. Second operand 7 states. [2020-10-14 19:15:27,188 WARN L193 SmtUtils]: Spent 113.00 ms on a formula simplification that was a NOOP. DAG size: 130 [2020-10-14 19:15:28,037 WARN L193 SmtUtils]: Spent 254.00 ms on a formula simplification that was a NOOP. DAG size: 134 [2020-10-14 19:15:29,568 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 19:15:29,568 INFO L93 Difference]: Finished difference Result 36063 states and 46809 transitions. [2020-10-14 19:15:29,569 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-14 19:15:29,569 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 259 [2020-10-14 19:15:29,569 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 19:15:29,611 INFO L225 Difference]: With dead ends: 36063 [2020-10-14 19:15:29,611 INFO L226 Difference]: Without dead ends: 18969 [2020-10-14 19:15:29,643 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 6 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2020-10-14 19:15:29,663 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18969 states. [2020-10-14 19:15:30,074 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18969 to 18900. [2020-10-14 19:15:30,074 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18900 states. [2020-10-14 19:15:30,116 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18900 states to 18900 states and 24564 transitions. [2020-10-14 19:15:30,117 INFO L78 Accepts]: Start accepts. Automaton has 18900 states and 24564 transitions. Word has length 259 [2020-10-14 19:15:30,117 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 19:15:30,117 INFO L479 AbstractCegarLoop]: Abstraction has 18900 states and 24564 transitions. [2020-10-14 19:15:30,117 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 19:15:30,117 INFO L276 IsEmpty]: Start isEmpty. Operand 18900 states and 24564 transitions. [2020-10-14 19:15:30,153 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 262 [2020-10-14 19:15:30,153 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 19:15:30,153 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 19:15:30,154 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-14 19:15:30,154 INFO L427 AbstractCegarLoop]: === Iteration 10 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 19:15:30,154 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 19:15:30,154 INFO L82 PathProgramCache]: Analyzing trace with hash 1565541292, now seen corresponding path program 1 times [2020-10-14 19:15:30,154 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 19:15:30,155 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [437539870] [2020-10-14 19:15:30,155 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 19:15:30,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:15:30,258 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:15:30,381 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:15:33,818 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:15:33,819 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 273 [2020-10-14 19:15:33,819 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 19:15:33,819 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3599 [2020-10-14 19:15:33,819 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:15:33,819 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:15:33,820 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 19:15:33,820 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 19:15:33,820 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 85 [2020-10-14 19:15:33,820 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 19:15:33,972 WARN L193 SmtUtils]: Spent 105.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-14 19:15:33,972 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 19:15:33,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:15:33,979 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:15:33,988 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:15:33,988 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 19:15:33,988 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 19:15:33,988 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-14 19:15:33,989 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:15:33,989 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:15:33,989 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 19:15:33,989 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 19:15:33,989 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 19:15:33,989 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 19:15:34,063 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 19:15:34,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:15:34,099 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:15:34,210 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:15:34,210 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 80 [2020-10-14 19:15:34,210 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 19:15:34,210 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 123 [2020-10-14 19:15:34,210 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:15:34,210 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:15:34,211 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 19:15:34,211 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 19:15:34,211 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 80 [2020-10-14 19:15:34,211 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 19:15:34,252 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2020-10-14 19:15:34,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:15:34,269 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:15:34,288 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:15:34,288 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 28 [2020-10-14 19:15:34,288 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 19:15:34,288 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 25 [2020-10-14 19:15:34,288 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:15:34,288 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:15:34,288 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 19:15:34,289 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 25 [2020-10-14 19:15:34,289 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 19:15:34,289 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 19:15:34,342 INFO L134 CoverageAnalysis]: Checked inductivity of 127 backedges. 100 proven. 22 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-10-14 19:15:34,342 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [437539870] [2020-10-14 19:15:34,343 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 19:15:34,343 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 19:15:34,343 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2139088297] [2020-10-14 19:15:34,343 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 19:15:34,344 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 19:15:34,344 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 19:15:34,344 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 19:15:34,344 INFO L87 Difference]: Start difference. First operand 18900 states and 24564 transitions. Second operand 7 states. [2020-10-14 19:15:34,476 WARN L193 SmtUtils]: Spent 106.00 ms on a formula simplification that was a NOOP. DAG size: 129 [2020-10-14 19:15:36,052 WARN L193 SmtUtils]: Spent 151.00 ms on a formula simplification that was a NOOP. DAG size: 129 [2020-10-14 19:15:38,589 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 19:15:38,590 INFO L93 Difference]: Finished difference Result 49058 states and 64535 transitions. [2020-10-14 19:15:38,590 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-14 19:15:38,591 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 261 [2020-10-14 19:15:38,591 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 19:15:38,709 INFO L225 Difference]: With dead ends: 49058 [2020-10-14 19:15:38,709 INFO L226 Difference]: Without dead ends: 30584 [2020-10-14 19:15:38,758 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-14 19:15:38,796 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30584 states. [2020-10-14 19:15:39,671 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30584 to 30431. [2020-10-14 19:15:39,671 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30431 states. [2020-10-14 19:15:39,756 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30431 states to 30431 states and 39224 transitions. [2020-10-14 19:15:39,758 INFO L78 Accepts]: Start accepts. Automaton has 30431 states and 39224 transitions. Word has length 261 [2020-10-14 19:15:39,758 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 19:15:39,758 INFO L479 AbstractCegarLoop]: Abstraction has 30431 states and 39224 transitions. [2020-10-14 19:15:39,759 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 19:15:39,759 INFO L276 IsEmpty]: Start isEmpty. Operand 30431 states and 39224 transitions. [2020-10-14 19:15:39,804 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 271 [2020-10-14 19:15:39,804 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 19:15:39,805 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 19:15:39,805 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-14 19:15:39,805 INFO L427 AbstractCegarLoop]: === Iteration 11 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 19:15:39,806 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 19:15:39,806 INFO L82 PathProgramCache]: Analyzing trace with hash 1233788096, now seen corresponding path program 1 times [2020-10-14 19:15:39,806 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 19:15:39,807 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [388409816] [2020-10-14 19:15:39,807 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 19:15:39,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:15:39,953 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:15:40,114 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:15:40,401 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:15:44,912 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:15:44,913 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 284 [2020-10-14 19:15:44,913 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 19:15:44,913 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5018 [2020-10-14 19:15:44,913 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:15:44,914 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:15:44,914 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 19:15:44,914 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-10-14 19:15:44,914 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 78 [2020-10-14 19:15:44,914 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 19:15:45,070 WARN L193 SmtUtils]: Spent 108.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-14 19:15:45,070 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 19:15:45,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:15:45,076 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:15:45,079 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:15:45,079 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 19:15:45,080 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 19:15:45,080 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-14 19:15:45,080 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:15:45,080 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:15:45,080 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 19:15:45,080 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 19:15:45,081 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 19:15:45,081 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 19:15:45,153 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 19:15:45,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:15:45,162 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:15:45,172 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:15:45,172 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-14 19:15:45,172 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 19:15:45,172 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-14 19:15:45,172 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:15:45,173 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:15:45,173 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 19:15:45,173 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 19:15:45,173 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 19:15:45,173 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 19:15:45,182 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-10-14 19:15:45,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:15:45,214 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:15:45,333 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:15:45,334 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 78 [2020-10-14 19:15:45,334 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 19:15:45,334 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 133 [2020-10-14 19:15:45,334 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:15:45,334 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:15:45,334 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 19:15:45,335 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 19:15:45,335 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 78 [2020-10-14 19:15:45,335 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 19:15:45,382 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2020-10-14 19:15:45,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:15:45,395 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:15:45,408 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:15:45,408 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 28 [2020-10-14 19:15:45,409 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 19:15:45,409 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-14 19:15:45,409 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:15:45,409 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:15:45,409 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 19:15:45,409 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 25 [2020-10-14 19:15:45,409 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 19:15:45,409 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 19:15:45,467 INFO L134 CoverageAnalysis]: Checked inductivity of 153 backedges. 116 proven. 26 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2020-10-14 19:15:45,467 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [388409816] [2020-10-14 19:15:45,467 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 19:15:45,467 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 19:15:45,467 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1498344111] [2020-10-14 19:15:45,468 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 19:15:45,468 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 19:15:45,469 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 19:15:45,469 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 19:15:45,469 INFO L87 Difference]: Start difference. First operand 30431 states and 39224 transitions. Second operand 7 states. [2020-10-14 19:15:45,624 WARN L193 SmtUtils]: Spent 123.00 ms on a formula simplification that was a NOOP. DAG size: 130 [2020-10-14 19:15:46,688 WARN L193 SmtUtils]: Spent 120.00 ms on a formula simplification that was a NOOP. DAG size: 132 [2020-10-14 19:15:48,528 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 19:15:48,529 INFO L93 Difference]: Finished difference Result 51291 states and 66614 transitions. [2020-10-14 19:15:48,529 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-14 19:15:48,529 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 270 [2020-10-14 19:15:48,529 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 19:15:48,617 INFO L225 Difference]: With dead ends: 51291 [2020-10-14 19:15:48,618 INFO L226 Difference]: Without dead ends: 30547 [2020-10-14 19:15:48,653 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-14 19:15:48,682 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30547 states. [2020-10-14 19:15:49,236 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30547 to 30443. [2020-10-14 19:15:49,236 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30443 states. [2020-10-14 19:15:49,305 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30443 states to 30443 states and 38476 transitions. [2020-10-14 19:15:49,306 INFO L78 Accepts]: Start accepts. Automaton has 30443 states and 38476 transitions. Word has length 270 [2020-10-14 19:15:49,306 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 19:15:49,306 INFO L479 AbstractCegarLoop]: Abstraction has 30443 states and 38476 transitions. [2020-10-14 19:15:49,307 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 19:15:49,307 INFO L276 IsEmpty]: Start isEmpty. Operand 30443 states and 38476 transitions. [2020-10-14 19:15:49,340 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 281 [2020-10-14 19:15:49,340 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 19:15:49,341 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 19:15:49,341 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-14 19:15:49,341 INFO L427 AbstractCegarLoop]: === Iteration 12 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 19:15:49,342 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 19:15:49,342 INFO L82 PathProgramCache]: Analyzing trace with hash -27172620, now seen corresponding path program 1 times [2020-10-14 19:15:49,342 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 19:15:49,346 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1057221318] [2020-10-14 19:15:49,346 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 19:15:49,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:15:49,471 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:15:49,584 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:15:50,024 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:15:50,191 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:15:54,534 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:15:54,534 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 294 [2020-10-14 19:15:54,534 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 19:15:54,534 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5107 [2020-10-14 19:15:54,534 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:15:54,535 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:15:54,535 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-14 19:15:54,535 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 19:15:54,535 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 104 [2020-10-14 19:15:54,535 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 19:15:54,689 WARN L193 SmtUtils]: Spent 107.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-14 19:15:54,691 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 19:15:54,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:15:54,699 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:15:54,707 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:15:54,707 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 19:15:54,707 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 19:15:54,708 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-14 19:15:54,708 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:15:54,708 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:15:54,708 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 19:15:54,708 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 19:15:54,708 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 19:15:54,709 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 19:15:54,786 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 19:15:54,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:15:54,798 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:15:54,814 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:15:54,833 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:15:54,834 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-14 19:15:54,834 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 19:15:54,834 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 39 [2020-10-14 19:15:54,834 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:15:54,834 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:15:54,834 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 19:15:54,834 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 19:15:54,834 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-10-14 19:15:54,835 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 19:15:54,858 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-10-14 19:15:54,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:15:54,909 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:15:55,031 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:15:55,032 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 78 [2020-10-14 19:15:55,032 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 19:15:55,032 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 141 [2020-10-14 19:15:55,032 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:15:55,032 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:15:55,032 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 19:15:55,033 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 19:15:55,033 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 78 [2020-10-14 19:15:55,033 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 19:15:55,184 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2020-10-14 19:15:55,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:15:55,195 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:15:55,209 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:15:55,209 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 28 [2020-10-14 19:15:55,209 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 19:15:55,209 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-14 19:15:55,209 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:15:55,209 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:15:55,209 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 19:15:55,210 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 25 [2020-10-14 19:15:55,210 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 19:15:55,210 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 19:15:55,379 INFO L134 CoverageAnalysis]: Checked inductivity of 183 backedges. 119 proven. 54 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2020-10-14 19:15:55,379 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1057221318] [2020-10-14 19:15:55,379 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 19:15:55,379 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-14 19:15:55,380 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1935031478] [2020-10-14 19:15:55,380 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-14 19:15:55,380 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 19:15:55,381 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-14 19:15:55,381 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2020-10-14 19:15:55,381 INFO L87 Difference]: Start difference. First operand 30443 states and 38476 transitions. Second operand 8 states. [2020-10-14 19:15:55,530 WARN L193 SmtUtils]: Spent 118.00 ms on a formula simplification that was a NOOP. DAG size: 130 [2020-10-14 19:15:56,663 WARN L193 SmtUtils]: Spent 121.00 ms on a formula simplification that was a NOOP. DAG size: 134 [2020-10-14 19:15:58,495 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 19:15:58,495 INFO L93 Difference]: Finished difference Result 75663 states and 96517 transitions. [2020-10-14 19:15:58,496 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-14 19:15:58,496 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 280 [2020-10-14 19:15:58,496 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 19:15:58,647 INFO L225 Difference]: With dead ends: 75663 [2020-10-14 19:15:58,647 INFO L226 Difference]: Without dead ends: 45654 [2020-10-14 19:15:58,694 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=48, Invalid=84, Unknown=0, NotChecked=0, Total=132 [2020-10-14 19:15:58,736 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45654 states. [2020-10-14 19:15:59,421 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45654 to 45392. [2020-10-14 19:15:59,422 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 45392 states. [2020-10-14 19:15:59,953 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45392 states to 45392 states and 56889 transitions. [2020-10-14 19:15:59,953 INFO L78 Accepts]: Start accepts. Automaton has 45392 states and 56889 transitions. Word has length 280 [2020-10-14 19:15:59,954 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 19:15:59,954 INFO L479 AbstractCegarLoop]: Abstraction has 45392 states and 56889 transitions. [2020-10-14 19:15:59,954 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-14 19:15:59,954 INFO L276 IsEmpty]: Start isEmpty. Operand 45392 states and 56889 transitions. [2020-10-14 19:16:00,011 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 303 [2020-10-14 19:16:00,012 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 19:16:00,012 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 19:16:00,012 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-14 19:16:00,012 INFO L427 AbstractCegarLoop]: === Iteration 13 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 19:16:00,013 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 19:16:00,013 INFO L82 PathProgramCache]: Analyzing trace with hash -2049209245, now seen corresponding path program 1 times [2020-10-14 19:16:00,013 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 19:16:00,013 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [781253977] [2020-10-14 19:16:00,014 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 19:16:00,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:16:00,201 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:16:00,309 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:16:00,402 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:16:05,142 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:16:05,142 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 318 [2020-10-14 19:16:05,142 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 19:16:05,142 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5015 [2020-10-14 19:16:05,142 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:16:05,143 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:16:05,143 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 19:16:05,143 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 55 [2020-10-14 19:16:05,143 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 78 [2020-10-14 19:16:05,143 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 19:16:05,311 WARN L193 SmtUtils]: Spent 108.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-14 19:16:05,312 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 19:16:05,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:16:05,316 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:16:05,325 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:16:05,325 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 19:16:05,326 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 19:16:05,326 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-14 19:16:05,326 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:16:05,326 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:16:05,326 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 19:16:05,326 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 19:16:05,326 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 19:16:05,326 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 19:16:05,399 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 19:16:05,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:16:05,403 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:16:05,408 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:16:05,408 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-14 19:16:05,408 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 19:16:05,408 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-14 19:16:05,408 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:16:05,409 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:16:05,409 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 19:16:05,409 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 19:16:05,409 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 19:16:05,409 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 19:16:05,412 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-10-14 19:16:05,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:16:05,425 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:16:05,450 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:16:05,451 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-10-14 19:16:05,451 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 19:16:05,451 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 30 [2020-10-14 19:16:05,451 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:16:05,451 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:16:05,451 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 19:16:05,451 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 19:16:05,452 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 27 [2020-10-14 19:16:05,452 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 19:16:05,462 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2020-10-14 19:16:05,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:16:05,494 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:16:05,609 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:16:05,609 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 78 [2020-10-14 19:16:05,609 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 19:16:05,609 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 127 [2020-10-14 19:16:05,610 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:16:05,610 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:16:05,610 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 19:16:05,610 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 19:16:05,610 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 78 [2020-10-14 19:16:05,610 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 19:16:05,782 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 128 [2020-10-14 19:16:05,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:16:05,800 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:16:05,817 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:16:05,817 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 28 [2020-10-14 19:16:05,817 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 19:16:05,817 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 23 [2020-10-14 19:16:05,817 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:16:05,818 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:16:05,818 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 19:16:05,818 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 25 [2020-10-14 19:16:05,818 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 19:16:05,818 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 19:16:06,023 INFO L134 CoverageAnalysis]: Checked inductivity of 252 backedges. 183 proven. 26 refuted. 0 times theorem prover too weak. 43 trivial. 0 not checked. [2020-10-14 19:16:06,023 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [781253977] [2020-10-14 19:16:06,023 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 19:16:06,023 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 19:16:06,023 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [68708175] [2020-10-14 19:16:06,024 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 19:16:06,024 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 19:16:06,024 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 19:16:06,024 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 19:16:06,024 INFO L87 Difference]: Start difference. First operand 45392 states and 56889 transitions. Second operand 7 states. [2020-10-14 19:16:06,167 WARN L193 SmtUtils]: Spent 122.00 ms on a formula simplification that was a NOOP. DAG size: 133 [2020-10-14 19:16:07,500 WARN L193 SmtUtils]: Spent 131.00 ms on a formula simplification that was a NOOP. DAG size: 139 [2020-10-14 19:16:09,524 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 19:16:09,524 INFO L93 Difference]: Finished difference Result 86063 states and 109314 transitions. [2020-10-14 19:16:09,525 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-14 19:16:09,525 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 302 [2020-10-14 19:16:09,526 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 19:16:09,706 INFO L225 Difference]: With dead ends: 86063 [2020-10-14 19:16:09,706 INFO L226 Difference]: Without dead ends: 54978 [2020-10-14 19:16:09,767 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2020-10-14 19:16:09,827 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54978 states. [2020-10-14 19:16:10,797 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54978 to 54266. [2020-10-14 19:16:10,797 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 54266 states. [2020-10-14 19:16:10,886 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54266 states to 54266 states and 67828 transitions. [2020-10-14 19:16:10,887 INFO L78 Accepts]: Start accepts. Automaton has 54266 states and 67828 transitions. Word has length 302 [2020-10-14 19:16:10,887 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 19:16:10,887 INFO L479 AbstractCegarLoop]: Abstraction has 54266 states and 67828 transitions. [2020-10-14 19:16:10,888 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 19:16:10,888 INFO L276 IsEmpty]: Start isEmpty. Operand 54266 states and 67828 transitions. [2020-10-14 19:16:10,945 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 306 [2020-10-14 19:16:10,945 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 19:16:10,946 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 19:16:10,946 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-14 19:16:10,946 INFO L427 AbstractCegarLoop]: === Iteration 14 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 19:16:10,946 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 19:16:10,947 INFO L82 PathProgramCache]: Analyzing trace with hash 815802377, now seen corresponding path program 1 times [2020-10-14 19:16:10,947 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 19:16:10,947 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1696007142] [2020-10-14 19:16:10,947 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 19:16:11,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:16:11,129 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:16:11,251 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:16:11,348 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:16:14,878 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:16:16,081 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:16:16,081 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 321 [2020-10-14 19:16:16,081 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 19:16:16,082 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5028 [2020-10-14 19:16:16,082 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:16:16,082 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:16:16,082 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 19:16:16,082 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 58 [2020-10-14 19:16:16,082 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 78 [2020-10-14 19:16:16,083 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 19:16:16,274 WARN L193 SmtUtils]: Spent 108.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-14 19:16:16,274 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 19:16:16,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:16:16,280 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:16:16,284 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:16:16,284 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 19:16:16,285 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 19:16:16,285 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-14 19:16:16,285 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:16:16,285 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:16:16,285 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 19:16:16,285 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 19:16:16,285 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 19:16:16,285 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 19:16:16,357 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 19:16:16,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:16:16,361 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:16:16,366 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:16:16,366 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-14 19:16:16,366 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 19:16:16,366 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-14 19:16:16,367 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:16:16,367 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:16:16,367 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 19:16:16,367 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 19:16:16,368 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 19:16:16,368 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 19:16:16,371 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-10-14 19:16:16,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:16:16,387 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:16:16,419 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:16:16,420 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 36 [2020-10-14 19:16:16,420 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 19:16:16,420 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 39 [2020-10-14 19:16:16,420 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:16:16,420 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:16:16,420 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 19:16:16,421 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 19:16:16,421 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-10-14 19:16:16,421 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 19:16:16,440 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2020-10-14 19:16:16,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:16:16,487 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:16:16,626 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:16:16,627 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 78 [2020-10-14 19:16:16,627 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 19:16:16,627 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 158 [2020-10-14 19:16:16,628 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:16:16,628 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:16:16,628 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 19:16:16,628 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 19:16:16,628 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 78 [2020-10-14 19:16:16,629 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 19:16:16,841 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2020-10-14 19:16:16,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:16:16,858 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:16:16,877 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:16:16,877 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 28 [2020-10-14 19:16:16,877 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 19:16:16,877 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 25 [2020-10-14 19:16:16,878 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:16:16,878 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:16:16,878 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 19:16:16,878 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 25 [2020-10-14 19:16:16,878 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 19:16:16,879 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 19:16:17,153 INFO L134 CoverageAnalysis]: Checked inductivity of 258 backedges. 189 proven. 26 refuted. 0 times theorem prover too weak. 43 trivial. 0 not checked. [2020-10-14 19:16:17,153 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1696007142] [2020-10-14 19:16:17,153 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 19:16:17,154 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 19:16:17,154 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [197707150] [2020-10-14 19:16:17,154 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 19:16:17,154 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 19:16:17,154 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 19:16:17,155 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 19:16:17,155 INFO L87 Difference]: Start difference. First operand 54266 states and 67828 transitions. Second operand 7 states. [2020-10-14 19:16:17,313 WARN L193 SmtUtils]: Spent 137.00 ms on a formula simplification that was a NOOP. DAG size: 137 [2020-10-14 19:16:19,026 WARN L193 SmtUtils]: Spent 132.00 ms on a formula simplification that was a NOOP. DAG size: 137 [2020-10-14 19:16:20,772 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 19:16:20,773 INFO L93 Difference]: Finished difference Result 123860 states and 157642 transitions. [2020-10-14 19:16:20,773 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-14 19:16:20,773 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 305 [2020-10-14 19:16:20,774 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 19:16:20,954 INFO L225 Difference]: With dead ends: 123860 [2020-10-14 19:16:20,955 INFO L226 Difference]: Without dead ends: 70044 [2020-10-14 19:16:21,043 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 13 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2020-10-14 19:16:21,113 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 70044 states. [2020-10-14 19:16:22,214 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 70044 to 69632. [2020-10-14 19:16:22,214 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 69632 states. [2020-10-14 19:16:22,325 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69632 states to 69632 states and 87559 transitions. [2020-10-14 19:16:22,325 INFO L78 Accepts]: Start accepts. Automaton has 69632 states and 87559 transitions. Word has length 305 [2020-10-14 19:16:22,326 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 19:16:22,326 INFO L479 AbstractCegarLoop]: Abstraction has 69632 states and 87559 transitions. [2020-10-14 19:16:22,326 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 19:16:22,326 INFO L276 IsEmpty]: Start isEmpty. Operand 69632 states and 87559 transitions. [2020-10-14 19:16:22,378 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 312 [2020-10-14 19:16:22,379 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 19:16:22,379 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 19:16:22,379 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-10-14 19:16:22,379 INFO L427 AbstractCegarLoop]: === Iteration 15 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 19:16:22,379 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 19:16:22,380 INFO L82 PathProgramCache]: Analyzing trace with hash -305057253, now seen corresponding path program 1 times [2020-10-14 19:16:22,380 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 19:16:22,380 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1111850864] [2020-10-14 19:16:22,380 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 19:16:22,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:16:22,452 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:16:22,541 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:16:22,881 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:16:27,190 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:16:27,190 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 327 [2020-10-14 19:16:27,191 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 19:16:27,191 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4764 [2020-10-14 19:16:27,191 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:16:27,191 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:16:27,191 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-14 19:16:27,191 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 19:16:27,192 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 116 [2020-10-14 19:16:27,192 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 19:16:27,355 WARN L193 SmtUtils]: Spent 110.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-14 19:16:27,356 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 19:16:27,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:16:27,363 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:16:27,369 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:16:27,369 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 19:16:27,369 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 19:16:27,369 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-14 19:16:27,370 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:16:27,370 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:16:27,370 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 19:16:27,370 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 19:16:27,370 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 19:16:27,370 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 19:16:27,446 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 19:16:27,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:16:27,485 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:16:27,619 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:16:27,620 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 101 [2020-10-14 19:16:27,620 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 19:16:27,620 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 149 [2020-10-14 19:16:27,620 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:16:27,620 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:16:27,620 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 19:16:27,620 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 19:16:27,621 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 101 [2020-10-14 19:16:27,621 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 19:16:27,672 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2020-10-14 19:16:27,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:16:27,677 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:16:27,689 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:16:27,690 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-14 19:16:27,690 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 19:16:27,690 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-14 19:16:27,690 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:16:27,690 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:16:27,690 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 19:16:27,690 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 19:16:27,690 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-14 19:16:27,691 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 19:16:27,703 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2020-10-14 19:16:27,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:16:27,713 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:16:27,722 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:16:27,723 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-10-14 19:16:27,723 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 19:16:27,723 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-14 19:16:27,723 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:16:27,723 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:16:27,723 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 19:16:27,723 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 17 [2020-10-14 19:16:27,724 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 19:16:27,724 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 19:16:27,729 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 137 [2020-10-14 19:16:27,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:16:27,740 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:16:27,752 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:16:27,753 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 28 [2020-10-14 19:16:27,753 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 19:16:27,753 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-14 19:16:27,753 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:16:27,753 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:16:27,753 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 19:16:27,753 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 25 [2020-10-14 19:16:27,753 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 19:16:27,754 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 19:16:27,853 INFO L134 CoverageAnalysis]: Checked inductivity of 231 backedges. 151 proven. 44 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2020-10-14 19:16:27,853 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1111850864] [2020-10-14 19:16:27,853 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 19:16:27,853 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 19:16:27,854 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [898466900] [2020-10-14 19:16:27,854 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 19:16:27,854 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 19:16:27,855 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 19:16:27,855 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 19:16:27,855 INFO L87 Difference]: Start difference. First operand 69632 states and 87559 transitions. Second operand 7 states. [2020-10-14 19:16:27,995 WARN L193 SmtUtils]: Spent 117.00 ms on a formula simplification that was a NOOP. DAG size: 131 [2020-10-14 19:16:29,229 WARN L193 SmtUtils]: Spent 112.00 ms on a formula simplification that was a NOOP. DAG size: 132 [2020-10-14 19:16:31,167 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 19:16:31,167 INFO L93 Difference]: Finished difference Result 145511 states and 183601 transitions. [2020-10-14 19:16:31,168 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-14 19:16:31,168 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 311 [2020-10-14 19:16:31,168 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 19:16:31,355 INFO L225 Difference]: With dead ends: 145511 [2020-10-14 19:16:31,355 INFO L226 Difference]: Without dead ends: 76341 [2020-10-14 19:16:31,468 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-14 19:16:31,542 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 76341 states. [2020-10-14 19:16:32,583 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 76341 to 76026. [2020-10-14 19:16:32,583 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 76026 states. [2020-10-14 19:16:32,687 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76026 states to 76026 states and 92648 transitions. [2020-10-14 19:16:32,688 INFO L78 Accepts]: Start accepts. Automaton has 76026 states and 92648 transitions. Word has length 311 [2020-10-14 19:16:32,688 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 19:16:32,688 INFO L479 AbstractCegarLoop]: Abstraction has 76026 states and 92648 transitions. [2020-10-14 19:16:32,688 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 19:16:32,688 INFO L276 IsEmpty]: Start isEmpty. Operand 76026 states and 92648 transitions. [2020-10-14 19:16:32,740 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 323 [2020-10-14 19:16:32,740 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 19:16:32,740 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 19:16:32,740 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-10-14 19:16:32,740 INFO L427 AbstractCegarLoop]: === Iteration 16 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 19:16:32,741 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 19:16:32,741 INFO L82 PathProgramCache]: Analyzing trace with hash 1339181506, now seen corresponding path program 1 times [2020-10-14 19:16:32,741 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 19:16:32,741 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [348556638] [2020-10-14 19:16:32,741 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 19:16:32,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:16:32,813 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:16:32,920 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:16:33,021 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:16:37,818 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:16:37,819 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 340 [2020-10-14 19:16:37,819 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 19:16:37,819 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5032 [2020-10-14 19:16:37,819 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:16:37,819 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:16:37,819 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 19:16:37,819 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-10-14 19:16:37,820 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 103 [2020-10-14 19:16:37,820 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 19:16:37,972 WARN L193 SmtUtils]: Spent 108.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-14 19:16:37,973 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 19:16:37,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:16:37,978 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:16:37,981 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:16:37,981 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 19:16:37,981 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 19:16:37,982 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-14 19:16:37,982 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:16:37,982 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:16:37,982 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 19:16:37,982 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 19:16:37,982 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 19:16:37,982 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 19:16:38,056 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 19:16:38,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:16:38,064 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:16:38,081 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:16:38,081 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-14 19:16:38,082 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 19:16:38,082 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-10-14 19:16:38,082 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:16:38,082 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:16:38,082 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 19:16:38,083 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 19:16:38,083 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 19:16:38,083 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 19:16:38,088 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-10-14 19:16:38,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:16:38,489 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:16:38,618 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:16:38,618 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 101 [2020-10-14 19:16:38,619 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 19:16:38,619 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 145 [2020-10-14 19:16:38,619 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:16:38,619 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:16:38,619 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 19:16:38,619 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 19:16:38,619 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 101 [2020-10-14 19:16:38,619 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 19:16:38,718 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2020-10-14 19:16:38,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:16:38,723 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:16:38,727 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:16:38,727 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-14 19:16:38,727 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 19:16:38,728 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-14 19:16:38,728 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:16:38,728 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:16:38,728 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 19:16:38,728 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-14 19:16:38,728 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 19:16:38,729 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 19:16:38,731 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2020-10-14 19:16:38,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:16:38,742 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:16:38,755 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:16:38,755 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-10-14 19:16:38,755 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 19:16:38,755 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-14 19:16:38,756 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:16:38,756 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:16:38,756 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 19:16:38,756 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 17 [2020-10-14 19:16:38,756 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 19:16:38,756 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 19:16:38,762 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 148 [2020-10-14 19:16:38,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:16:38,773 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:16:38,785 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:16:38,785 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 28 [2020-10-14 19:16:38,786 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 19:16:38,786 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-14 19:16:38,786 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:16:38,786 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:16:38,786 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 19:16:38,786 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 25 [2020-10-14 19:16:38,786 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 19:16:38,786 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 19:16:38,892 INFO L134 CoverageAnalysis]: Checked inductivity of 280 backedges. 170 proven. 47 refuted. 0 times theorem prover too weak. 63 trivial. 0 not checked. [2020-10-14 19:16:38,892 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [348556638] [2020-10-14 19:16:38,892 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 19:16:38,892 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 19:16:38,893 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [429196093] [2020-10-14 19:16:38,893 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 19:16:38,893 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 19:16:38,894 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 19:16:38,894 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2020-10-14 19:16:38,894 INFO L87 Difference]: Start difference. First operand 76026 states and 92648 transitions. Second operand 7 states. [2020-10-14 19:16:39,085 WARN L193 SmtUtils]: Spent 110.00 ms on a formula simplification that was a NOOP. DAG size: 128 [2020-10-14 19:16:42,503 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 19:16:42,504 INFO L93 Difference]: Finished difference Result 163275 states and 208341 transitions. [2020-10-14 19:16:42,504 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-14 19:16:42,504 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 322 [2020-10-14 19:16:42,505 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 19:16:42,773 INFO L225 Difference]: With dead ends: 163275 [2020-10-14 19:16:42,773 INFO L226 Difference]: Without dead ends: 87711 [2020-10-14 19:16:42,888 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2020-10-14 19:16:42,975 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 87711 states. [2020-10-14 19:16:46,566 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 87711 to 86283. [2020-10-14 19:16:46,566 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 86283 states. [2020-10-14 19:16:46,742 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 86283 states to 86283 states and 106659 transitions. [2020-10-14 19:16:46,743 INFO L78 Accepts]: Start accepts. Automaton has 86283 states and 106659 transitions. Word has length 322 [2020-10-14 19:16:46,743 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 19:16:46,743 INFO L479 AbstractCegarLoop]: Abstraction has 86283 states and 106659 transitions. [2020-10-14 19:16:46,743 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 19:16:46,743 INFO L276 IsEmpty]: Start isEmpty. Operand 86283 states and 106659 transitions. [2020-10-14 19:16:46,808 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 331 [2020-10-14 19:16:46,808 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 19:16:46,808 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 19:16:46,808 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-10-14 19:16:46,808 INFO L427 AbstractCegarLoop]: === Iteration 17 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 19:16:46,809 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 19:16:46,809 INFO L82 PathProgramCache]: Analyzing trace with hash -2140013790, now seen corresponding path program 1 times [2020-10-14 19:16:46,809 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 19:16:46,809 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1118251543] [2020-10-14 19:16:46,809 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 19:16:46,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:16:46,919 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:16:47,013 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:16:47,902 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:16:49,288 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:16:49,289 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 344 [2020-10-14 19:16:49,289 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 19:16:49,289 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2415 [2020-10-14 19:16:49,289 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:16:49,289 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:16:49,289 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 19:16:49,290 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 110 [2020-10-14 19:16:49,290 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 80 [2020-10-14 19:16:49,290 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 19:16:49,457 WARN L193 SmtUtils]: Spent 107.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-14 19:16:49,458 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 19:16:49,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:16:49,462 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:16:49,466 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:16:49,466 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 19:16:49,466 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 19:16:49,466 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-14 19:16:49,466 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:16:49,466 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:16:49,466 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 19:16:49,467 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 19:16:49,467 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 19:16:49,467 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 19:16:49,546 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 19:16:49,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:16:49,585 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:16:49,939 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:16:49,939 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 101 [2020-10-14 19:16:49,939 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 19:16:49,939 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 369 [2020-10-14 19:16:49,939 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:16:49,940 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:16:49,940 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 19:16:49,940 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 19:16:49,940 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 95 [2020-10-14 19:16:49,940 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 19:16:49,965 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2020-10-14 19:16:49,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:16:49,985 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:16:50,008 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:16:50,237 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:16:50,238 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 49 [2020-10-14 19:16:50,238 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 19:16:50,238 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 260 [2020-10-14 19:16:50,238 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:16:50,238 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:16:50,238 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 19:16:50,238 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 19:16:50,238 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 49 [2020-10-14 19:16:50,239 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 19:16:50,261 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 156 [2020-10-14 19:16:50,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:16:50,276 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:16:50,318 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:16:50,318 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 28 [2020-10-14 19:16:50,318 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 19:16:50,318 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 47 [2020-10-14 19:16:50,318 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:16:50,318 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:16:50,318 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 19:16:50,319 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 19:16:50,319 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-10-14 19:16:50,319 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 19:16:50,406 INFO L134 CoverageAnalysis]: Checked inductivity of 268 backedges. 235 proven. 6 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2020-10-14 19:16:50,406 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1118251543] [2020-10-14 19:16:50,406 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 19:16:50,407 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 19:16:50,407 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [895651289] [2020-10-14 19:16:50,407 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 19:16:50,407 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 19:16:50,408 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 19:16:50,408 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 19:16:50,408 INFO L87 Difference]: Start difference. First operand 86283 states and 106659 transitions. Second operand 7 states. [2020-10-14 19:16:50,623 WARN L193 SmtUtils]: Spent 119.00 ms on a formula simplification that was a NOOP. DAG size: 132 [2020-10-14 19:16:50,859 WARN L193 SmtUtils]: Spent 115.00 ms on a formula simplification that was a NOOP. DAG size: 130 [2020-10-14 19:16:55,227 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 19:16:55,227 INFO L93 Difference]: Finished difference Result 167455 states and 215736 transitions. [2020-10-14 19:16:55,228 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-14 19:16:55,228 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 330 [2020-10-14 19:16:55,228 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 19:16:55,440 INFO L225 Difference]: With dead ends: 167455 [2020-10-14 19:16:55,440 INFO L226 Difference]: Without dead ends: 81598 [2020-10-14 19:16:55,539 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-14 19:16:55,602 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 81598 states. [2020-10-14 19:16:57,221 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 81598 to 78362. [2020-10-14 19:16:57,221 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 78362 states. [2020-10-14 19:16:57,323 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 78362 states to 78362 states and 92590 transitions. [2020-10-14 19:16:57,324 INFO L78 Accepts]: Start accepts. Automaton has 78362 states and 92590 transitions. Word has length 330 [2020-10-14 19:16:57,324 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 19:16:57,324 INFO L479 AbstractCegarLoop]: Abstraction has 78362 states and 92590 transitions. [2020-10-14 19:16:57,324 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 19:16:57,325 INFO L276 IsEmpty]: Start isEmpty. Operand 78362 states and 92590 transitions. [2020-10-14 19:16:57,379 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 340 [2020-10-14 19:16:57,379 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 19:16:57,379 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 19:16:57,379 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-10-14 19:16:57,380 INFO L427 AbstractCegarLoop]: === Iteration 18 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 19:16:57,380 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 19:16:57,380 INFO L82 PathProgramCache]: Analyzing trace with hash 201036025, now seen corresponding path program 1 times [2020-10-14 19:16:57,380 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 19:16:57,380 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [611248159] [2020-10-14 19:16:57,381 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 19:16:57,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:16:57,490 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:16:57,599 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:16:57,700 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:16:57,796 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:17:02,470 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:17:02,470 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 355 [2020-10-14 19:17:02,470 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 19:17:02,470 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5024 [2020-10-14 19:17:02,470 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:17:02,470 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:17:02,471 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 19:17:02,471 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-10-14 19:17:02,471 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 151 [2020-10-14 19:17:02,471 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 19:17:02,627 WARN L193 SmtUtils]: Spent 101.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-14 19:17:02,628 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 19:17:02,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:17:02,633 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:17:02,636 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:17:02,637 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 19:17:02,637 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 19:17:02,637 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-14 19:17:02,637 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:17:02,638 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:17:02,638 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 19:17:02,638 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 19:17:02,638 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 19:17:02,638 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 19:17:02,706 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 19:17:02,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:17:02,713 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:17:02,721 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:17:02,721 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-14 19:17:02,722 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 19:17:02,722 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-14 19:17:02,722 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:17:02,722 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:17:02,722 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 19:17:02,722 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 19:17:02,723 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 19:17:02,723 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 19:17:02,727 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-10-14 19:17:02,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:17:02,770 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:17:02,934 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:17:02,935 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 128 [2020-10-14 19:17:02,935 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 19:17:02,935 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 182 [2020-10-14 19:17:02,935 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:17:02,935 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:17:02,935 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 19:17:02,935 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 19:17:02,935 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 128 [2020-10-14 19:17:02,936 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 19:17:03,092 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 146 [2020-10-14 19:17:03,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:17:03,102 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:17:03,132 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:17:03,132 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-10-14 19:17:03,132 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 19:17:03,132 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 33 [2020-10-14 19:17:03,132 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:17:03,132 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:17:03,132 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 19:17:03,133 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 19:17:03,133 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-10-14 19:17:03,133 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 19:17:03,174 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 165 [2020-10-14 19:17:03,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:17:03,187 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:17:03,199 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:17:03,199 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 28 [2020-10-14 19:17:03,199 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 19:17:03,199 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-14 19:17:03,199 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:17:03,199 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:17:03,200 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 19:17:03,200 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 25 [2020-10-14 19:17:03,200 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 19:17:03,200 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 19:17:03,434 INFO L134 CoverageAnalysis]: Checked inductivity of 268 backedges. 206 proven. 44 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2020-10-14 19:17:03,434 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [611248159] [2020-10-14 19:17:03,434 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 19:17:03,435 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-14 19:17:03,435 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [934245042] [2020-10-14 19:17:03,435 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-14 19:17:03,435 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 19:17:03,436 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-14 19:17:03,436 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2020-10-14 19:17:03,436 INFO L87 Difference]: Start difference. First operand 78362 states and 92590 transitions. Second operand 8 states. [2020-10-14 19:17:03,647 WARN L193 SmtUtils]: Spent 109.00 ms on a formula simplification that was a NOOP. DAG size: 132 [2020-10-14 19:17:05,141 WARN L193 SmtUtils]: Spent 114.00 ms on a formula simplification that was a NOOP. DAG size: 133 [2020-10-14 19:17:07,128 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 19:17:07,128 INFO L93 Difference]: Finished difference Result 157395 states and 192769 transitions. [2020-10-14 19:17:07,128 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-14 19:17:07,129 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 339 [2020-10-14 19:17:07,129 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 19:17:07,316 INFO L225 Difference]: With dead ends: 157395 [2020-10-14 19:17:07,316 INFO L226 Difference]: Without dead ends: 79467 [2020-10-14 19:17:07,387 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=58, Invalid=124, Unknown=0, NotChecked=0, Total=182 [2020-10-14 19:17:07,442 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 79467 states. [2020-10-14 19:17:08,451 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 79467 to 76477. [2020-10-14 19:17:08,452 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 76477 states. [2020-10-14 19:17:08,552 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76477 states to 76477 states and 89501 transitions. [2020-10-14 19:17:08,552 INFO L78 Accepts]: Start accepts. Automaton has 76477 states and 89501 transitions. Word has length 339 [2020-10-14 19:17:08,553 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 19:17:08,553 INFO L479 AbstractCegarLoop]: Abstraction has 76477 states and 89501 transitions. [2020-10-14 19:17:08,553 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-14 19:17:08,553 INFO L276 IsEmpty]: Start isEmpty. Operand 76477 states and 89501 transitions. [2020-10-14 19:17:08,600 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 343 [2020-10-14 19:17:08,600 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 19:17:08,601 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 19:17:08,601 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2020-10-14 19:17:08,601 INFO L427 AbstractCegarLoop]: === Iteration 19 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 19:17:08,601 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 19:17:08,601 INFO L82 PathProgramCache]: Analyzing trace with hash 1606948280, now seen corresponding path program 1 times [2020-10-14 19:17:08,601 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 19:17:08,601 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1408375266] [2020-10-14 19:17:08,602 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 19:17:08,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:17:08,721 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:17:08,822 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:17:09,027 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:17:14,636 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:17:14,637 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 360 [2020-10-14 19:17:14,637 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 19:17:14,637 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5965 [2020-10-14 19:17:14,637 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:17:14,637 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:17:14,637 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-14 19:17:14,637 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-10-14 19:17:14,638 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 135 [2020-10-14 19:17:14,638 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 19:17:14,811 WARN L193 SmtUtils]: Spent 108.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-14 19:17:14,812 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 19:17:14,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:17:14,816 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:17:14,819 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:17:14,819 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 19:17:14,820 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 19:17:14,820 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 19:17:14,820 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:17:14,820 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:17:14,820 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 19:17:14,820 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 19:17:14,821 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 19:17:14,821 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 19:17:14,904 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 19:17:14,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:17:14,911 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:17:14,920 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:17:14,920 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-14 19:17:14,921 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 19:17:14,921 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-14 19:17:14,921 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:17:14,921 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:17:14,921 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 19:17:14,921 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 19:17:14,921 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 19:17:14,921 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 19:17:14,929 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-10-14 19:17:14,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:17:14,943 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:17:15,000 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:17:15,000 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-10-14 19:17:15,000 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 19:17:15,001 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 62 [2020-10-14 19:17:15,001 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:17:15,001 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:17:15,001 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-14 19:17:15,001 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 19:17:15,001 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 33 [2020-10-14 19:17:15,001 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 19:17:15,041 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2020-10-14 19:17:15,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:17:15,080 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:17:15,216 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:17:15,216 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 99 [2020-10-14 19:17:15,217 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 19:17:15,217 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 152 [2020-10-14 19:17:15,217 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:17:15,217 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:17:15,217 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 19:17:15,217 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 19:17:15,217 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 99 [2020-10-14 19:17:15,217 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 19:17:15,285 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 149 [2020-10-14 19:17:15,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:17:15,293 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:17:15,302 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:17:15,302 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-10-14 19:17:15,302 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 19:17:15,302 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-14 19:17:15,302 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:17:15,302 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:17:15,303 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 19:17:15,303 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 17 [2020-10-14 19:17:15,303 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 19:17:15,303 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 19:17:15,307 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 168 [2020-10-14 19:17:15,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:17:15,319 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:17:15,331 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:17:15,332 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 28 [2020-10-14 19:17:15,332 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 19:17:15,332 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-14 19:17:15,332 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:17:15,333 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:17:15,333 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 19:17:15,333 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 25 [2020-10-14 19:17:15,333 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 19:17:15,333 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 19:17:15,457 INFO L134 CoverageAnalysis]: Checked inductivity of 359 backedges. 233 proven. 82 refuted. 0 times theorem prover too weak. 44 trivial. 0 not checked. [2020-10-14 19:17:15,457 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1408375266] [2020-10-14 19:17:15,458 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 19:17:15,458 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-10-14 19:17:15,458 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1966204240] [2020-10-14 19:17:15,459 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-14 19:17:15,459 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 19:17:15,459 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-14 19:17:15,460 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2020-10-14 19:17:15,460 INFO L87 Difference]: Start difference. First operand 76477 states and 89501 transitions. Second operand 10 states. [2020-10-14 19:17:15,739 WARN L193 SmtUtils]: Spent 257.00 ms on a formula simplification. DAG size of input: 136 DAG size of output: 134 [2020-10-14 19:17:15,964 WARN L193 SmtUtils]: Spent 121.00 ms on a formula simplification that was a NOOP. DAG size: 132 [2020-10-14 19:17:17,880 WARN L193 SmtUtils]: Spent 242.00 ms on a formula simplification. DAG size of input: 136 DAG size of output: 134 [2020-10-14 19:17:18,294 WARN L193 SmtUtils]: Spent 116.00 ms on a formula simplification that was a NOOP. DAG size: 132 [2020-10-14 19:17:19,795 WARN L193 SmtUtils]: Spent 241.00 ms on a formula simplification. DAG size of input: 135 DAG size of output: 130 [2020-10-14 19:17:21,123 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 19:17:21,123 INFO L93 Difference]: Finished difference Result 158191 states and 186402 transitions. [2020-10-14 19:17:21,124 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2020-10-14 19:17:21,124 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 342 [2020-10-14 19:17:21,124 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 19:17:21,280 INFO L225 Difference]: With dead ends: 158191 [2020-10-14 19:17:21,280 INFO L226 Difference]: Without dead ends: 82988 [2020-10-14 19:17:21,574 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 24 SyntacticMatches, 1 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 139 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=170, Invalid=532, Unknown=0, NotChecked=0, Total=702 [2020-10-14 19:17:21,620 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 82988 states. [2020-10-14 19:17:22,507 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 82988 to 82266. [2020-10-14 19:17:22,508 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 82266 states. [2020-10-14 19:17:22,617 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 82266 states to 82266 states and 95968 transitions. [2020-10-14 19:17:22,618 INFO L78 Accepts]: Start accepts. Automaton has 82266 states and 95968 transitions. Word has length 342 [2020-10-14 19:17:22,618 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 19:17:22,618 INFO L479 AbstractCegarLoop]: Abstraction has 82266 states and 95968 transitions. [2020-10-14 19:17:22,618 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-14 19:17:22,618 INFO L276 IsEmpty]: Start isEmpty. Operand 82266 states and 95968 transitions. [2020-10-14 19:17:22,669 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 346 [2020-10-14 19:17:22,670 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 19:17:22,670 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 19:17:22,670 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2020-10-14 19:17:22,670 INFO L427 AbstractCegarLoop]: === Iteration 20 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 19:17:22,670 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 19:17:22,671 INFO L82 PathProgramCache]: Analyzing trace with hash 544314206, now seen corresponding path program 1 times [2020-10-14 19:17:22,671 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 19:17:22,671 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1868835561] [2020-10-14 19:17:22,671 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 19:17:22,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:17:22,791 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:17:22,894 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:17:22,983 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:17:24,111 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:17:27,788 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:17:27,788 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 363 [2020-10-14 19:17:27,788 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 19:17:27,788 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5047 [2020-10-14 19:17:27,789 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:17:27,789 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:17:27,789 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-14 19:17:27,789 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-10-14 19:17:27,789 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 159 [2020-10-14 19:17:27,789 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 19:17:27,972 WARN L193 SmtUtils]: Spent 109.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-14 19:17:27,973 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 19:17:27,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:17:27,977 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:17:27,980 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:17:27,980 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 19:17:27,981 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 19:17:27,981 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 19:17:27,981 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:17:27,981 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:17:27,981 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 19:17:27,982 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 19:17:27,982 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 19:17:27,982 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 19:17:28,061 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 19:17:28,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:17:28,067 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:17:28,076 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:17:28,076 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-14 19:17:28,076 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 19:17:28,076 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-14 19:17:28,076 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:17:28,076 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:17:28,076 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 19:17:28,077 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 19:17:28,077 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 19:17:28,077 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 19:17:28,080 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-10-14 19:17:28,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:17:28,093 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:17:28,151 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:17:28,152 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 36 [2020-10-14 19:17:28,152 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 19:17:28,152 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 63 [2020-10-14 19:17:28,152 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:17:28,152 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:17:28,152 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-14 19:17:28,152 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 19:17:28,153 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 36 [2020-10-14 19:17:28,153 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 19:17:28,189 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2020-10-14 19:17:28,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:17:28,227 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:17:28,361 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:17:28,361 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 99 [2020-10-14 19:17:28,361 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 19:17:28,361 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 148 [2020-10-14 19:17:28,361 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:17:28,362 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:17:28,362 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 19:17:28,362 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 19:17:28,362 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 99 [2020-10-14 19:17:28,362 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 19:17:28,605 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 152 [2020-10-14 19:17:28,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:17:28,635 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:17:28,661 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:17:28,662 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-10-14 19:17:28,662 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 19:17:28,662 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 28 [2020-10-14 19:17:28,662 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:17:28,662 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:17:28,662 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 19:17:28,662 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 19:17:28,662 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-10-14 19:17:28,662 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 19:17:28,682 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 171 [2020-10-14 19:17:28,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:17:28,694 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:17:28,706 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:17:28,707 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 28 [2020-10-14 19:17:28,707 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 19:17:28,707 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-14 19:17:28,707 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:17:28,707 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:17:28,707 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 19:17:28,707 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 25 [2020-10-14 19:17:28,708 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 19:17:28,708 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 19:17:28,836 INFO L134 CoverageAnalysis]: Checked inductivity of 365 backedges. 211 proven. 120 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2020-10-14 19:17:28,836 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1868835561] [2020-10-14 19:17:28,836 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 19:17:28,836 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-10-14 19:17:28,837 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [743935176] [2020-10-14 19:17:28,837 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-14 19:17:28,837 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 19:17:28,838 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-14 19:17:28,838 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2020-10-14 19:17:28,838 INFO L87 Difference]: Start difference. First operand 82266 states and 95968 transitions. Second operand 10 states. [2020-10-14 19:17:29,059 WARN L193 SmtUtils]: Spent 111.00 ms on a formula simplification that was a NOOP. DAG size: 128 [2020-10-14 19:17:29,479 WARN L193 SmtUtils]: Spent 237.00 ms on a formula simplification. DAG size of input: 133 DAG size of output: 132 [2020-10-14 19:17:30,307 WARN L193 SmtUtils]: Spent 261.00 ms on a formula simplification. DAG size of input: 136 DAG size of output: 133 [2020-10-14 19:17:30,841 WARN L193 SmtUtils]: Spent 250.00 ms on a formula simplification. DAG size of input: 136 DAG size of output: 132 [2020-10-14 19:17:31,095 WARN L193 SmtUtils]: Spent 118.00 ms on a formula simplification that was a NOOP. DAG size: 132 [2020-10-14 19:17:32,756 WARN L193 SmtUtils]: Spent 109.00 ms on a formula simplification that was a NOOP. DAG size: 131 [2020-10-14 19:17:37,190 WARN L193 SmtUtils]: Spent 253.00 ms on a formula simplification. DAG size of input: 135 DAG size of output: 134