/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SequenceOfStatements --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=BIGGEST --traceabstraction.additional.smt.options log-additional-information=true --traceabstraction.additional.smt.options unknown-allowed=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem15_label19.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-12 14:11:16,953 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-12 14:11:16,957 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-12 14:11:16,999 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-12 14:11:16,999 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-12 14:11:17,007 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-12 14:11:17,010 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-12 14:11:17,013 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-12 14:11:17,016 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-12 14:11:17,019 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-12 14:11:17,020 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-12 14:11:17,021 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-12 14:11:17,022 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-12 14:11:17,025 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-12 14:11:17,027 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-12 14:11:17,029 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-12 14:11:17,031 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-12 14:11:17,032 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-12 14:11:17,033 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-12 14:11:17,041 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-12 14:11:17,044 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-12 14:11:17,045 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-12 14:11:17,046 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-12 14:11:17,046 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-12 14:11:17,065 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-12 14:11:17,065 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-12 14:11:17,065 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-12 14:11:17,066 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-12 14:11:17,067 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-12 14:11:17,070 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-12 14:11:17,070 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-12 14:11:17,071 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-12 14:11:17,072 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-12 14:11:17,074 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-12 14:11:17,076 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-12 14:11:17,076 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-12 14:11:17,076 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-12 14:11:17,077 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-12 14:11:17,077 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-12 14:11:17,079 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-12 14:11:17,079 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-12 14:11:17,080 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-12 14:11:17,125 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-12 14:11:17,125 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-12 14:11:17,128 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-12 14:11:17,128 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-12 14:11:17,128 INFO L138 SettingsManager]: * Use SBE=true [2020-10-12 14:11:17,129 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-12 14:11:17,129 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-12 14:11:17,129 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-12 14:11:17,129 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-12 14:11:17,129 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-12 14:11:17,130 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-12 14:11:17,131 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-12 14:11:17,131 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-12 14:11:17,131 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-12 14:11:17,132 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-12 14:11:17,132 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-12 14:11:17,132 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-12 14:11:17,132 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-12 14:11:17,132 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-12 14:11:17,133 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-12 14:11:17,133 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-12 14:11:17,133 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-12 14:11:17,134 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-12 14:11:17,134 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-12 14:11:17,134 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-12 14:11:17,134 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-12 14:11:17,134 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-12 14:11:17,135 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-12 14:11:17,135 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-12 14:11:17,135 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=BIGGEST;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=BIGGEST;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=BIGGEST;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=BIGGEST;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=BIGGEST;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=BIGGEST;log-additional-information=true;unknown-allowed=true; [2020-10-12 14:11:17,463 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-12 14:11:17,476 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-12 14:11:17,479 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-12 14:11:17,481 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-12 14:11:17,481 INFO L275 PluginConnector]: CDTParser initialized [2020-10-12 14:11:17,482 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem15_label19.c [2020-10-12 14:11:17,553 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/f665d2eb5/a33dabf7413749ef9dfb55e63c3188f1/FLAG6da4f2662 [2020-10-12 14:11:18,302 INFO L306 CDTParser]: Found 1 translation units. [2020-10-12 14:11:18,303 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem15_label19.c [2020-10-12 14:11:18,322 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/f665d2eb5/a33dabf7413749ef9dfb55e63c3188f1/FLAG6da4f2662 [2020-10-12 14:11:18,465 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/f665d2eb5/a33dabf7413749ef9dfb55e63c3188f1 [2020-10-12 14:11:18,477 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-12 14:11:18,479 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-12 14:11:18,481 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-12 14:11:18,481 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-12 14:11:18,485 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-12 14:11:18,486 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.10 02:11:18" (1/1) ... [2020-10-12 14:11:18,489 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@654c884d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 02:11:18, skipping insertion in model container [2020-10-12 14:11:18,489 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.10 02:11:18" (1/1) ... [2020-10-12 14:11:18,498 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-12 14:11:18,572 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-12 14:11:19,691 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-12 14:11:19,700 INFO L203 MainTranslator]: Completed pre-run [2020-10-12 14:11:20,033 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-12 14:11:20,054 INFO L208 MainTranslator]: Completed translation [2020-10-12 14:11:20,056 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 02:11:20 WrapperNode [2020-10-12 14:11:20,056 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-12 14:11:20,057 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-12 14:11:20,057 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-12 14:11:20,057 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-12 14:11:20,072 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 02:11:20" (1/1) ... [2020-10-12 14:11:20,073 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 02:11:20" (1/1) ... [2020-10-12 14:11:20,111 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 02:11:20" (1/1) ... [2020-10-12 14:11:20,111 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 02:11:20" (1/1) ... [2020-10-12 14:11:20,186 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 02:11:20" (1/1) ... [2020-10-12 14:11:20,211 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 02:11:20" (1/1) ... [2020-10-12 14:11:20,229 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 02:11:20" (1/1) ... [2020-10-12 14:11:20,243 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-12 14:11:20,244 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-12 14:11:20,244 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-12 14:11:20,244 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-12 14:11:20,245 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 02:11:20" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-12 14:11:20,320 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-12 14:11:20,320 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-12 14:11:20,320 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-10-12 14:11:20,320 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2020-10-12 14:11:20,321 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-12 14:11:20,321 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-10-12 14:11:20,321 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2020-10-12 14:11:20,321 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-12 14:11:20,322 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-12 14:11:20,322 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-12 14:11:20,322 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-12 14:11:20,322 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-12 14:11:20,322 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-12 14:11:26,113 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-12 14:11:26,114 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-12 14:11:26,122 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.10 02:11:26 BoogieIcfgContainer [2020-10-12 14:11:26,122 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-12 14:11:26,124 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-12 14:11:26,124 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-12 14:11:26,131 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-12 14:11:26,131 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.10 02:11:18" (1/3) ... [2020-10-12 14:11:26,132 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@42d95eb9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.10 02:11:26, skipping insertion in model container [2020-10-12 14:11:26,133 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 02:11:20" (2/3) ... [2020-10-12 14:11:26,133 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@42d95eb9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.10 02:11:26, skipping insertion in model container [2020-10-12 14:11:26,133 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.10 02:11:26" (3/3) ... [2020-10-12 14:11:26,135 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem15_label19.c [2020-10-12 14:11:26,146 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-12 14:11:26,156 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-12 14:11:26,175 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-12 14:11:26,204 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-12 14:11:26,205 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-12 14:11:26,205 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-12 14:11:26,205 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-12 14:11:26,205 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-12 14:11:26,205 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-12 14:11:26,205 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-12 14:11:26,206 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-12 14:11:26,234 INFO L276 IsEmpty]: Start isEmpty. Operand 437 states. [2020-10-12 14:11:26,243 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2020-10-12 14:11:26,243 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 14:11:26,244 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] [2020-10-12 14:11:26,245 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 14:11:26,251 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 14:11:26,252 INFO L82 PathProgramCache]: Analyzing trace with hash 1728507445, now seen corresponding path program 1 times [2020-10-12 14:11:26,261 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 14:11:26,262 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [658889323] [2020-10-12 14:11:26,262 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 14:11:26,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:11:26,525 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:11:26,927 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:11:26,927 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 59 [2020-10-12 14:11:26,927 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 14:11:26,928 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 486 [2020-10-12 14:11:26,930 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:11:26,930 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-12 14:11:26,930 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-12 14:11:26,931 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 53 [2020-10-12 14:11:26,931 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-12 14:11:27,045 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 14:11:27,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:11:27,052 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:11:27,060 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:11:27,061 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 14:11:27,061 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 14:11:27,061 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-12 14:11:27,061 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:11:27,062 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 14:11:27,062 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 14:11:27,062 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-12 14:11:27,062 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 14:11:27,091 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 14:11:27,093 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [658889323] [2020-10-12 14:11:27,095 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 14:11:27,096 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-12 14:11:27,097 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [917740536] [2020-10-12 14:11:27,104 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-12 14:11:27,104 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 14:11:27,119 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-12 14:11:27,120 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-12 14:11:27,123 INFO L87 Difference]: Start difference. First operand 437 states. Second operand 4 states. [2020-10-12 14:11:33,220 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 14:11:33,221 INFO L93 Difference]: Finished difference Result 1199 states and 2164 transitions. [2020-10-12 14:11:33,223 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-12 14:11:33,224 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 51 [2020-10-12 14:11:33,225 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 14:11:33,249 INFO L225 Difference]: With dead ends: 1199 [2020-10-12 14:11:33,249 INFO L226 Difference]: Without dead ends: 697 [2020-10-12 14:11:33,262 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-12 14:11:33,291 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 697 states. [2020-10-12 14:11:33,376 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 697 to 691. [2020-10-12 14:11:33,377 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 691 states. [2020-10-12 14:11:33,382 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 691 states to 691 states and 1012 transitions. [2020-10-12 14:11:33,384 INFO L78 Accepts]: Start accepts. Automaton has 691 states and 1012 transitions. Word has length 51 [2020-10-12 14:11:33,385 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 14:11:33,385 INFO L479 AbstractCegarLoop]: Abstraction has 691 states and 1012 transitions. [2020-10-12 14:11:33,385 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-12 14:11:33,386 INFO L276 IsEmpty]: Start isEmpty. Operand 691 states and 1012 transitions. [2020-10-12 14:11:33,392 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2020-10-12 14:11:33,392 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 14:11:33,393 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 14:11:33,393 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-12 14:11:33,394 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 14:11:33,394 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 14:11:33,394 INFO L82 PathProgramCache]: Analyzing trace with hash 882457234, now seen corresponding path program 1 times [2020-10-12 14:11:33,394 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 14:11:33,395 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1900400219] [2020-10-12 14:11:33,395 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 14:11:33,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:11:33,574 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:11:33,748 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:11:34,729 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:11:36,278 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:11:36,279 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 130 [2020-10-12 14:11:36,279 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-12 14:11:36,279 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2773 [2020-10-12 14:11:36,280 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:11:36,281 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-12 14:11:36,281 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 79 [2020-10-12 14:11:36,281 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 49 [2020-10-12 14:11:36,281 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 14:11:36,494 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 14:11:36,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:11:36,498 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:11:36,500 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:11:36,500 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 14:11:36,500 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 14:11:36,501 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 14:11:36,501 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:11:36,501 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 14:11:36,501 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 14:11:36,501 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 14:11:36,502 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 14:11:36,518 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-12 14:11:36,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:11:36,548 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:11:36,619 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:11:36,619 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 70 [2020-10-12 14:11:36,619 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 14:11:36,620 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 82 [2020-10-12 14:11:36,620 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:11:36,620 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 14:11:36,620 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 14:11:36,621 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 64 [2020-10-12 14:11:36,621 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 14:11:36,708 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 43 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 14:11:36,709 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1900400219] [2020-10-12 14:11:36,709 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 14:11:36,709 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-12 14:11:36,709 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [644910589] [2020-10-12 14:11:36,712 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-12 14:11:36,712 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 14:11:36,712 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-12 14:11:36,713 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2020-10-12 14:11:36,713 INFO L87 Difference]: Start difference. First operand 691 states and 1012 transitions. Second operand 8 states. [2020-10-12 14:11:45,139 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 14:11:45,140 INFO L93 Difference]: Finished difference Result 1507 states and 2170 transitions. [2020-10-12 14:11:45,141 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-12 14:11:45,141 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 120 [2020-10-12 14:11:45,142 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 14:11:45,149 INFO L225 Difference]: With dead ends: 1507 [2020-10-12 14:11:45,150 INFO L226 Difference]: Without dead ends: 695 [2020-10-12 14:11:45,154 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=52, Invalid=80, Unknown=0, NotChecked=0, Total=132 [2020-10-12 14:11:45,156 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 695 states. [2020-10-12 14:11:45,208 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 695 to 691. [2020-10-12 14:11:45,209 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 691 states. [2020-10-12 14:11:45,212 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 691 states to 691 states and 929 transitions. [2020-10-12 14:11:45,212 INFO L78 Accepts]: Start accepts. Automaton has 691 states and 929 transitions. Word has length 120 [2020-10-12 14:11:45,215 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 14:11:45,215 INFO L479 AbstractCegarLoop]: Abstraction has 691 states and 929 transitions. [2020-10-12 14:11:45,215 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-12 14:11:45,216 INFO L276 IsEmpty]: Start isEmpty. Operand 691 states and 929 transitions. [2020-10-12 14:11:45,228 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2020-10-12 14:11:45,229 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 14:11:45,230 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 14:11:45,230 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-12 14:11:45,231 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 14:11:45,231 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 14:11:45,231 INFO L82 PathProgramCache]: Analyzing trace with hash 1032883849, now seen corresponding path program 1 times [2020-10-12 14:11:45,232 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 14:11:45,232 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1143343673] [2020-10-12 14:11:45,233 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 14:11:45,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:11:45,335 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:11:45,432 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:11:46,850 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:11:46,851 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 141 [2020-10-12 14:11:46,851 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 14:11:46,851 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1545 [2020-10-12 14:11:46,852 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:11:46,852 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-12 14:11:46,852 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-12 14:11:46,852 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 86 [2020-10-12 14:11:46,852 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 14:11:46,967 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 14:11:46,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:11:46,973 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:11:46,981 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:11:46,982 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 14:11:46,982 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 14:11:46,982 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-12 14:11:46,983 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:11:46,983 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 14:11:46,983 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 14:11:46,984 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-12 14:11:46,984 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 14:11:47,021 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-12 14:11:47,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:11:47,059 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:11:47,195 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:11:47,196 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 81 [2020-10-12 14:11:47,196 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 14:11:47,196 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 150 [2020-10-12 14:11:47,196 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:11:47,197 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 14:11:47,197 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 14:11:47,197 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 81 [2020-10-12 14:11:47,197 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 14:11:47,329 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 44 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 14:11:47,330 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1143343673] [2020-10-12 14:11:47,330 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 14:11:47,332 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-12 14:11:47,332 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1588855102] [2020-10-12 14:11:47,336 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-12 14:11:47,337 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 14:11:47,338 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-12 14:11:47,340 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-10-12 14:11:47,340 INFO L87 Difference]: Start difference. First operand 691 states and 929 transitions. Second operand 8 states. [2020-10-12 14:11:57,464 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 14:11:57,465 INFO L93 Difference]: Finished difference Result 1697 states and 2210 transitions. [2020-10-12 14:11:57,472 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-12 14:11:57,472 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 131 [2020-10-12 14:11:57,473 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 14:11:57,478 INFO L225 Difference]: With dead ends: 1697 [2020-10-12 14:11:57,478 INFO L226 Difference]: Without dead ends: 1012 [2020-10-12 14:11:57,481 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2020-10-12 14:11:57,482 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1012 states. [2020-10-12 14:11:57,511 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1012 to 1006. [2020-10-12 14:11:57,512 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1006 states. [2020-10-12 14:11:57,516 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1006 states to 1006 states and 1251 transitions. [2020-10-12 14:11:57,516 INFO L78 Accepts]: Start accepts. Automaton has 1006 states and 1251 transitions. Word has length 131 [2020-10-12 14:11:57,517 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 14:11:57,517 INFO L479 AbstractCegarLoop]: Abstraction has 1006 states and 1251 transitions. [2020-10-12 14:11:57,517 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-12 14:11:57,517 INFO L276 IsEmpty]: Start isEmpty. Operand 1006 states and 1251 transitions. [2020-10-12 14:11:57,521 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 289 [2020-10-12 14:11:57,521 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 14:11:57,522 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 14:11:57,522 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-12 14:11:57,522 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 14:11:57,522 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 14:11:57,523 INFO L82 PathProgramCache]: Analyzing trace with hash -1544909855, now seen corresponding path program 1 times [2020-10-12 14:11:57,523 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 14:11:57,523 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1956703345] [2020-10-12 14:11:57,523 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 14:11:57,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:11:57,654 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:11:58,297 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:11:59,715 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:11:59,716 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 298 [2020-10-12 14:11:59,716 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 14:11:59,716 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2112 [2020-10-12 14:11:59,717 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:11:59,717 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-12 14:11:59,717 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-12 14:11:59,717 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 292 [2020-10-12 14:11:59,717 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 14:11:59,827 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 14:11:59,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:11:59,831 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:11:59,836 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:11:59,836 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 14:11:59,837 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 14:11:59,837 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-12 14:11:59,837 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:11:59,837 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 14:11:59,837 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 14:11:59,838 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-12 14:11:59,838 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 14:11:59,855 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-12 14:11:59,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:11:59,950 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:12:00,414 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:12:00,414 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 238 [2020-10-12 14:12:00,414 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 14:12:00,414 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 504 [2020-10-12 14:12:00,415 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:12:00,415 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-12 14:12:00,415 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 14:12:00,415 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 238 [2020-10-12 14:12:00,416 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 14:12:00,727 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 0 proven. 44 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 14:12:00,727 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1956703345] [2020-10-12 14:12:00,728 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 14:12:00,728 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-12 14:12:00,728 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1499929811] [2020-10-12 14:12:00,729 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-12 14:12:00,729 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 14:12:00,730 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-12 14:12:00,730 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2020-10-12 14:12:00,730 INFO L87 Difference]: Start difference. First operand 1006 states and 1251 transitions. Second operand 8 states. [2020-10-12 14:12:09,005 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 14:12:09,006 INFO L93 Difference]: Finished difference Result 2387 states and 3115 transitions. [2020-10-12 14:12:09,007 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-12 14:12:09,007 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 288 [2020-10-12 14:12:09,010 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 14:12:09,019 INFO L225 Difference]: With dead ends: 2387 [2020-10-12 14:12:09,020 INFO L226 Difference]: Without dead ends: 1694 [2020-10-12 14:12:09,023 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=42, Invalid=114, Unknown=0, NotChecked=0, Total=156 [2020-10-12 14:12:09,025 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1694 states. [2020-10-12 14:12:09,072 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1694 to 1653. [2020-10-12 14:12:09,072 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1653 states. [2020-10-12 14:12:09,078 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1653 states to 1653 states and 1979 transitions. [2020-10-12 14:12:09,079 INFO L78 Accepts]: Start accepts. Automaton has 1653 states and 1979 transitions. Word has length 288 [2020-10-12 14:12:09,079 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 14:12:09,080 INFO L479 AbstractCegarLoop]: Abstraction has 1653 states and 1979 transitions. [2020-10-12 14:12:09,080 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-12 14:12:09,080 INFO L276 IsEmpty]: Start isEmpty. Operand 1653 states and 1979 transitions. [2020-10-12 14:12:09,085 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 361 [2020-10-12 14:12:09,086 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 14:12:09,086 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 14:12:09,087 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-12 14:12:09,087 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 14:12:09,087 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 14:12:09,087 INFO L82 PathProgramCache]: Analyzing trace with hash 201120805, now seen corresponding path program 1 times [2020-10-12 14:12:09,087 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 14:12:09,088 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1761804264] [2020-10-12 14:12:09,088 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 14:12:09,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:12:09,240 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:12:09,406 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:12:09,849 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:12:10,291 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:12:13,666 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:12:14,196 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:12:14,196 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 372 [2020-10-12 14:12:14,197 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-12 14:12:14,197 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5021 [2020-10-12 14:12:14,197 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:12:14,197 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-12 14:12:14,198 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-12 14:12:14,198 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 282 [2020-10-12 14:12:14,198 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 14:12:14,331 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 14:12:14,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:12:14,338 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:12:14,344 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:12:14,345 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 14:12:14,345 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 14:12:14,345 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-12 14:12:14,346 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:12:14,346 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 14:12:14,346 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 14:12:14,347 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-12 14:12:14,347 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 14:12:14,371 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-12 14:12:14,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:12:14,523 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:12:15,171 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:12:15,172 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 238 [2020-10-12 14:12:15,172 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 14:12:15,172 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 712 [2020-10-12 14:12:15,173 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:12:15,173 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-12 14:12:15,174 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 14:12:15,174 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 238 [2020-10-12 14:12:15,174 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 14:12:15,493 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 245 [2020-10-12 14:12:15,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:12:15,559 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:12:15,685 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:12:15,778 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:12:15,778 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 73 [2020-10-12 14:12:15,779 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 14:12:15,779 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 246 [2020-10-12 14:12:15,779 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:12:15,779 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 14:12:15,783 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 14:12:15,784 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 73 [2020-10-12 14:12:15,784 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-10-12 14:12:16,173 INFO L134 CoverageAnalysis]: Checked inductivity of 160 backedges. 122 proven. 37 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-12 14:12:16,174 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1761804264] [2020-10-12 14:12:16,174 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 14:12:16,174 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-12 14:12:16,174 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2051550587] [2020-10-12 14:12:16,175 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-12 14:12:16,175 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 14:12:16,176 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-12 14:12:16,176 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2020-10-12 14:12:16,176 INFO L87 Difference]: Start difference. First operand 1653 states and 1979 transitions. Second operand 9 states. [2020-10-12 14:12:32,274 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 14:12:32,274 INFO L93 Difference]: Finished difference Result 3132 states and 3954 transitions. [2020-10-12 14:12:32,275 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-12 14:12:32,276 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 360 [2020-10-12 14:12:32,276 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 14:12:32,288 INFO L225 Difference]: With dead ends: 3132 [2020-10-12 14:12:32,288 INFO L226 Difference]: Without dead ends: 2031 [2020-10-12 14:12:32,292 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 54 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=86, Invalid=256, Unknown=0, NotChecked=0, Total=342 [2020-10-12 14:12:32,295 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2031 states. [2020-10-12 14:12:32,340 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2031 to 1975. [2020-10-12 14:12:32,340 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1975 states. [2020-10-12 14:12:32,348 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1975 states to 1975 states and 2487 transitions. [2020-10-12 14:12:32,348 INFO L78 Accepts]: Start accepts. Automaton has 1975 states and 2487 transitions. Word has length 360 [2020-10-12 14:12:32,349 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 14:12:32,349 INFO L479 AbstractCegarLoop]: Abstraction has 1975 states and 2487 transitions. [2020-10-12 14:12:32,349 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-12 14:12:32,349 INFO L276 IsEmpty]: Start isEmpty. Operand 1975 states and 2487 transitions. [2020-10-12 14:12:32,356 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 406 [2020-10-12 14:12:32,356 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 14:12:32,357 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 14:12:32,357 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-12 14:12:32,357 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 14:12:32,357 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 14:12:32,358 INFO L82 PathProgramCache]: Analyzing trace with hash 1972016181, now seen corresponding path program 1 times [2020-10-12 14:12:32,358 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 14:12:32,358 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [742536666] [2020-10-12 14:12:32,358 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 14:12:32,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:12:32,522 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:12:32,661 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:12:34,991 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:12:34,991 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 417 [2020-10-12 14:12:34,991 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 14:12:34,991 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2535 [2020-10-12 14:12:34,992 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:12:34,992 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 14:12:34,992 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 284 [2020-10-12 14:12:34,992 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 83 [2020-10-12 14:12:34,993 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 14:12:35,124 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 14:12:35,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:12:35,127 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:12:35,129 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:12:35,129 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 14:12:35,130 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 14:12:35,130 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 14:12:35,130 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:12:35,130 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 14:12:35,130 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 14:12:35,131 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 14:12:35,131 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 14:12:35,148 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-12 14:12:35,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:12:35,276 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:12:35,506 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:12:35,506 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 275 [2020-10-12 14:12:35,506 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 14:12:35,507 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 277 [2020-10-12 14:12:35,507 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:12:35,507 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 14:12:35,507 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 14:12:35,507 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 269 [2020-10-12 14:12:35,508 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 14:12:35,638 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-12 14:12:35,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:12:35,666 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:12:35,783 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:12:35,783 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 81 [2020-10-12 14:12:35,783 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 14:12:35,784 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 127 [2020-10-12 14:12:35,784 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:12:35,784 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 14:12:35,784 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 14:12:35,784 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 81 [2020-10-12 14:12:35,785 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 14:12:36,050 INFO L134 CoverageAnalysis]: Checked inductivity of 168 backedges. 165 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-12 14:12:36,051 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [742536666] [2020-10-12 14:12:36,051 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 14:12:36,051 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-12 14:12:36,052 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1870556117] [2020-10-12 14:12:36,053 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-12 14:12:36,053 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 14:12:36,054 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-12 14:12:36,054 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-12 14:12:36,054 INFO L87 Difference]: Start difference. First operand 1975 states and 2487 transitions. Second operand 7 states. [2020-10-12 14:12:46,493 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 14:12:46,493 INFO L93 Difference]: Finished difference Result 5289 states and 6901 transitions. [2020-10-12 14:12:46,495 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-12 14:12:46,495 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 405 [2020-10-12 14:12:46,496 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 14:12:46,516 INFO L225 Difference]: With dead ends: 5289 [2020-10-12 14:12:46,516 INFO L226 Difference]: Without dead ends: 3627 [2020-10-12 14:12:46,523 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 6 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-12 14:12:46,528 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3627 states. [2020-10-12 14:12:46,628 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3627 to 3578. [2020-10-12 14:12:46,628 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3578 states. [2020-10-12 14:12:46,645 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3578 states to 3578 states and 4265 transitions. [2020-10-12 14:12:46,646 INFO L78 Accepts]: Start accepts. Automaton has 3578 states and 4265 transitions. Word has length 405 [2020-10-12 14:12:46,647 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 14:12:46,648 INFO L479 AbstractCegarLoop]: Abstraction has 3578 states and 4265 transitions. [2020-10-12 14:12:46,648 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-12 14:12:46,648 INFO L276 IsEmpty]: Start isEmpty. Operand 3578 states and 4265 transitions. [2020-10-12 14:12:46,665 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 437 [2020-10-12 14:12:46,665 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 14:12:46,666 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 14:12:46,667 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-12 14:12:46,667 INFO L427 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 14:12:46,667 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 14:12:46,668 INFO L82 PathProgramCache]: Analyzing trace with hash -1088812881, now seen corresponding path program 1 times [2020-10-12 14:12:46,668 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 14:12:46,668 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [635584100] [2020-10-12 14:12:46,669 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 14:12:46,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:12:46,922 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:12:47,290 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:12:49,333 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:12:49,333 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 448 [2020-10-12 14:12:49,334 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 14:12:49,334 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2520 [2020-10-12 14:12:49,335 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:12:49,335 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 14:12:49,335 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 284 [2020-10-12 14:12:49,335 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 114 [2020-10-12 14:12:49,336 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 14:12:49,531 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 14:12:49,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:12:49,534 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:12:49,536 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:12:49,536 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 14:12:49,537 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 14:12:49,537 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 14:12:49,537 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:12:49,537 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 14:12:49,537 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 14:12:49,538 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 14:12:49,538 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 14:12:49,557 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-12 14:12:49,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:12:49,658 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:12:49,858 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:12:49,858 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 275 [2020-10-12 14:12:49,859 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 14:12:49,859 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 241 [2020-10-12 14:12:49,859 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:12:49,859 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 14:12:49,859 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 14:12:49,860 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 269 [2020-10-12 14:12:49,860 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 14:12:49,960 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-12 14:12:49,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:12:49,989 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:12:50,126 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:12:50,126 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 112 [2020-10-12 14:12:50,126 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 14:12:50,127 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 148 [2020-10-12 14:12:50,127 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:12:50,127 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 14:12:50,127 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 14:12:50,127 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 112 [2020-10-12 14:12:50,128 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 14:12:50,447 INFO L134 CoverageAnalysis]: Checked inductivity of 199 backedges. 196 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-12 14:12:50,448 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [635584100] [2020-10-12 14:12:50,448 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 14:12:50,448 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-12 14:12:50,448 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2017789982] [2020-10-12 14:12:50,449 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-12 14:12:50,449 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 14:12:50,450 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-12 14:12:50,450 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-12 14:12:50,450 INFO L87 Difference]: Start difference. First operand 3578 states and 4265 transitions. Second operand 7 states. [2020-10-12 14:13:01,404 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 14:13:01,405 INFO L93 Difference]: Finished difference Result 8779 states and 10782 transitions. [2020-10-12 14:13:01,406 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-12 14:13:01,407 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 436 [2020-10-12 14:13:01,408 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 14:13:01,431 INFO L225 Difference]: With dead ends: 8779 [2020-10-12 14:13:01,431 INFO L226 Difference]: Without dead ends: 5514 [2020-10-12 14:13:01,441 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2020-10-12 14:13:01,448 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5514 states. [2020-10-12 14:13:01,567 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5514 to 5469. [2020-10-12 14:13:01,567 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5469 states. [2020-10-12 14:13:01,579 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5469 states to 5469 states and 6301 transitions. [2020-10-12 14:13:01,579 INFO L78 Accepts]: Start accepts. Automaton has 5469 states and 6301 transitions. Word has length 436 [2020-10-12 14:13:01,580 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 14:13:01,580 INFO L479 AbstractCegarLoop]: Abstraction has 5469 states and 6301 transitions. [2020-10-12 14:13:01,581 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-12 14:13:01,581 INFO L276 IsEmpty]: Start isEmpty. Operand 5469 states and 6301 transitions. [2020-10-12 14:13:01,584 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 449 [2020-10-12 14:13:01,584 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 14:13:01,585 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 14:13:01,585 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-12 14:13:01,585 INFO L427 AbstractCegarLoop]: === Iteration 8 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 14:13:01,585 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 14:13:01,586 INFO L82 PathProgramCache]: Analyzing trace with hash 1007660407, now seen corresponding path program 1 times [2020-10-12 14:13:01,586 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 14:13:01,586 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1222780193] [2020-10-12 14:13:01,586 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 14:13:01,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:13:01,787 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:13:02,377 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:13:02,377 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 460 [2020-10-12 14:13:02,377 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 14:13:02,377 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 673 [2020-10-12 14:13:02,378 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:13:02,378 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 14:13:02,378 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 409 [2020-10-12 14:13:02,378 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 50 [2020-10-12 14:13:02,378 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 14:13:02,560 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 14:13:02,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:13:02,562 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:13:02,563 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:13:02,563 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 14:13:02,563 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 14:13:02,565 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 14:13:02,565 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:13:02,565 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 14:13:02,566 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 14:13:02,566 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 14:13:02,566 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 14:13:02,583 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-12 14:13:02,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:13:02,603 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:13:02,683 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:13:02,683 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 287 [2020-10-12 14:13:02,684 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 14:13:02,684 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 83 [2020-10-12 14:13:02,684 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:13:02,684 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 14:13:02,684 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 14:13:02,685 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 14:13:02,685 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 14:13:02,784 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 294 [2020-10-12 14:13:02,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:13:02,808 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:13:02,883 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:13:02,883 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 112 [2020-10-12 14:13:02,883 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 14:13:02,884 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 83 [2020-10-12 14:13:02,884 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:13:02,884 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 14:13:02,884 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 14:13:02,884 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 106 [2020-10-12 14:13:02,884 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 14:13:03,003 INFO L134 CoverageAnalysis]: Checked inductivity of 199 backedges. 89 proven. 2 refuted. 0 times theorem prover too weak. 108 trivial. 0 not checked. [2020-10-12 14:13:03,003 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1222780193] [2020-10-12 14:13:03,003 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 14:13:03,004 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-12 14:13:03,004 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [726356126] [2020-10-12 14:13:03,005 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-12 14:13:03,005 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 14:13:03,005 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-12 14:13:03,005 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-12 14:13:03,006 INFO L87 Difference]: Start difference. First operand 5469 states and 6301 transitions. Second operand 5 states. [2020-10-12 14:13:09,386 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 14:13:09,386 INFO L93 Difference]: Finished difference Result 12206 states and 14554 transitions. [2020-10-12 14:13:09,389 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-12 14:13:09,390 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 448 [2020-10-12 14:13:09,390 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 14:13:09,420 INFO L225 Difference]: With dead ends: 12206 [2020-10-12 14:13:09,420 INFO L226 Difference]: Without dead ends: 7050 [2020-10-12 14:13:09,433 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 7 SyntacticMatches, 2 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-12 14:13:09,441 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7050 states. [2020-10-12 14:13:09,603 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7050 to 7037. [2020-10-12 14:13:09,604 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7037 states. [2020-10-12 14:13:09,619 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7037 states to 7037 states and 8084 transitions. [2020-10-12 14:13:09,621 INFO L78 Accepts]: Start accepts. Automaton has 7037 states and 8084 transitions. Word has length 448 [2020-10-12 14:13:09,623 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 14:13:09,623 INFO L479 AbstractCegarLoop]: Abstraction has 7037 states and 8084 transitions. [2020-10-12 14:13:09,623 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-12 14:13:09,623 INFO L276 IsEmpty]: Start isEmpty. Operand 7037 states and 8084 transitions. [2020-10-12 14:13:09,628 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 485 [2020-10-12 14:13:09,628 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 14:13:09,629 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 14:13:09,629 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-12 14:13:09,630 INFO L427 AbstractCegarLoop]: === Iteration 9 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 14:13:09,630 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 14:13:09,630 INFO L82 PathProgramCache]: Analyzing trace with hash 1753482893, now seen corresponding path program 1 times [2020-10-12 14:13:09,631 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 14:13:09,631 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [65572648] [2020-10-12 14:13:09,631 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 14:13:09,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:13:09,849 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:13:11,188 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:13:11,762 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:13:11,762 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 496 [2020-10-12 14:13:11,762 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 14:13:11,763 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1995 [2020-10-12 14:13:11,763 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:13:11,763 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-12 14:13:11,763 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-12 14:13:11,763 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 480 [2020-10-12 14:13:11,764 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 14:13:11,988 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 14:13:11,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:13:11,992 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:13:11,997 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:13:11,998 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 14:13:11,998 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 14:13:11,998 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-12 14:13:11,998 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:13:11,999 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 14:13:11,999 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 14:13:11,999 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-12 14:13:11,999 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 14:13:12,027 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-12 14:13:12,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:13:12,176 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:13:12,580 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:13:12,580 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 287 [2020-10-12 14:13:12,580 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 14:13:12,580 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 464 [2020-10-12 14:13:12,581 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:13:12,581 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 14:13:12,581 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 14:13:12,581 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 287 [2020-10-12 14:13:12,581 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 14:13:12,720 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 294 [2020-10-12 14:13:12,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:13:12,764 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:13:13,001 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:13:13,001 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 148 [2020-10-12 14:13:13,001 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 14:13:13,001 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 259 [2020-10-12 14:13:13,001 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:13:13,001 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-12 14:13:13,002 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 14:13:13,002 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 148 [2020-10-12 14:13:13,002 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 14:13:13,357 INFO L134 CoverageAnalysis]: Checked inductivity of 235 backedges. 20 proven. 71 refuted. 0 times theorem prover too weak. 144 trivial. 0 not checked. [2020-10-12 14:13:13,357 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [65572648] [2020-10-12 14:13:13,358 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 14:13:13,358 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-12 14:13:13,358 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [735981753] [2020-10-12 14:13:13,359 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-12 14:13:13,359 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 14:13:13,359 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-12 14:13:13,360 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-10-12 14:13:13,360 INFO L87 Difference]: Start difference. First operand 7037 states and 8084 transitions. Second operand 8 states. [2020-10-12 14:13:25,647 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 14:13:25,647 INFO L93 Difference]: Finished difference Result 12620 states and 14719 transitions. [2020-10-12 14:13:25,650 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-12 14:13:25,650 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 484 [2020-10-12 14:13:25,651 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 14:13:25,683 INFO L225 Difference]: With dead ends: 12620 [2020-10-12 14:13:25,684 INFO L226 Difference]: Without dead ends: 7063 [2020-10-12 14:13:25,701 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2020-10-12 14:13:25,710 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7063 states. [2020-10-12 14:13:25,841 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7063 to 7045. [2020-10-12 14:13:25,841 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7045 states. [2020-10-12 14:13:25,855 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7045 states to 7045 states and 8085 transitions. [2020-10-12 14:13:25,856 INFO L78 Accepts]: Start accepts. Automaton has 7045 states and 8085 transitions. Word has length 484 [2020-10-12 14:13:25,858 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 14:13:25,858 INFO L479 AbstractCegarLoop]: Abstraction has 7045 states and 8085 transitions. [2020-10-12 14:13:25,858 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-12 14:13:25,858 INFO L276 IsEmpty]: Start isEmpty. Operand 7045 states and 8085 transitions. [2020-10-12 14:13:25,865 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 540 [2020-10-12 14:13:25,865 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 14:13:25,867 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, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 14:13:25,867 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-12 14:13:25,867 INFO L427 AbstractCegarLoop]: === Iteration 10 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 14:13:25,868 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 14:13:25,868 INFO L82 PathProgramCache]: Analyzing trace with hash -1013240758, now seen corresponding path program 1 times [2020-10-12 14:13:25,868 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 14:13:25,868 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1026538666] [2020-10-12 14:13:25,869 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 14:13:25,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:13:26,095 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:13:26,833 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:13:27,426 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:13:27,427 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 553 [2020-10-12 14:13:27,427 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 14:13:27,427 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1426 [2020-10-12 14:13:27,427 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:13:27,427 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-12 14:13:27,427 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 409 [2020-10-12 14:13:27,428 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 143 [2020-10-12 14:13:27,428 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 14:13:27,551 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 14:13:27,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:13:27,554 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:13:27,556 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:13:27,556 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 14:13:27,556 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 14:13:27,556 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 14:13:27,556 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:13:27,557 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 14:13:27,557 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 14:13:27,557 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 14:13:27,557 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 14:13:27,581 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-12 14:13:27,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:13:27,596 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:13:27,649 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:13:27,650 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 287 [2020-10-12 14:13:27,650 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 14:13:27,650 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 55 [2020-10-12 14:13:27,650 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:13:27,650 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 14:13:27,650 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 14:13:27,650 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 14:13:27,651 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 14:13:27,752 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 294 [2020-10-12 14:13:27,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:13:27,781 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:13:27,834 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:13:27,835 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 112 [2020-10-12 14:13:27,835 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 14:13:27,835 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 65 [2020-10-12 14:13:27,835 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:13:27,835 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 14:13:27,836 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 14:13:27,836 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 106 [2020-10-12 14:13:27,836 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 14:13:27,862 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 405 [2020-10-12 14:13:27,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:13:27,888 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:13:27,917 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:13:27,991 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:13:27,992 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 92 [2020-10-12 14:13:27,992 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 14:13:27,992 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 113 [2020-10-12 14:13:27,992 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:13:27,992 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 14:13:27,992 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 14:13:27,992 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 92 [2020-10-12 14:13:27,992 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 14:13:28,227 INFO L134 CoverageAnalysis]: Checked inductivity of 425 backedges. 266 proven. 45 refuted. 0 times theorem prover too weak. 114 trivial. 0 not checked. [2020-10-12 14:13:28,228 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1026538666] [2020-10-12 14:13:28,228 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 14:13:28,228 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-12 14:13:28,228 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [3621624] [2020-10-12 14:13:28,229 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-12 14:13:28,229 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 14:13:28,229 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-12 14:13:28,229 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-12 14:13:28,229 INFO L87 Difference]: Start difference. First operand 7045 states and 8085 transitions. Second operand 7 states. [2020-10-12 14:13:46,228 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 14:13:46,228 INFO L93 Difference]: Finished difference Result 15489 states and 18544 transitions. [2020-10-12 14:13:46,230 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-12 14:13:46,230 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 539 [2020-10-12 14:13:46,231 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 14:13:46,267 INFO L225 Difference]: With dead ends: 15489 [2020-10-12 14:13:46,268 INFO L226 Difference]: Without dead ends: 10000 [2020-10-12 14:13:46,283 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-12 14:13:46,295 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10000 states. [2020-10-12 14:13:46,457 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10000 to 9638. [2020-10-12 14:13:46,457 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9638 states. [2020-10-12 14:13:46,482 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9638 states to 9638 states and 11173 transitions. [2020-10-12 14:13:46,483 INFO L78 Accepts]: Start accepts. Automaton has 9638 states and 11173 transitions. Word has length 539 [2020-10-12 14:13:46,484 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 14:13:46,484 INFO L479 AbstractCegarLoop]: Abstraction has 9638 states and 11173 transitions. [2020-10-12 14:13:46,485 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-12 14:13:46,485 INFO L276 IsEmpty]: Start isEmpty. Operand 9638 states and 11173 transitions. [2020-10-12 14:13:46,492 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 550 [2020-10-12 14:13:46,492 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 14:13:46,493 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, 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 14:13:46,493 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-12 14:13:46,494 INFO L427 AbstractCegarLoop]: === Iteration 11 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 14:13:46,494 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 14:13:46,495 INFO L82 PathProgramCache]: Analyzing trace with hash 1869841573, now seen corresponding path program 1 times [2020-10-12 14:13:46,495 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 14:13:46,495 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [525688453] [2020-10-12 14:13:46,495 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 14:13:46,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:13:46,733 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:13:47,358 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:13:47,738 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:13:48,779 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:13:48,779 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 563 [2020-10-12 14:13:48,779 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-12 14:13:48,780 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2138 [2020-10-12 14:13:48,780 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:13:48,780 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 14:13:48,780 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 512 [2020-10-12 14:13:48,780 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 21 [2020-10-12 14:13:48,780 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 14:13:49,059 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 14:13:49,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:13:49,062 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:13:49,064 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:13:49,064 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 14:13:49,064 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 14:13:49,065 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 14:13:49,065 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:13:49,065 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 14:13:49,065 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 14:13:49,065 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 14:13:49,066 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 14:13:49,099 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-12 14:13:49,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:13:49,120 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:13:49,209 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:13:49,210 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 287 [2020-10-12 14:13:49,210 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 14:13:49,210 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 91 [2020-10-12 14:13:49,210 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:13:49,210 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 14:13:49,211 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 14:13:49,211 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 14:13:49,211 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 14:13:49,299 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 294 [2020-10-12 14:13:49,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:13:49,305 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:13:49,326 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:13:49,327 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 112 [2020-10-12 14:13:49,327 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 14:13:49,327 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-10-12 14:13:49,327 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:13:49,327 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 14:13:49,327 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 14:13:49,327 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 14:13:49,327 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 14:13:49,351 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 405 [2020-10-12 14:13:49,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:13:49,373 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:13:49,436 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:13:49,437 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 102 [2020-10-12 14:13:49,437 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 14:13:49,437 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 71 [2020-10-12 14:13:49,438 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:13:49,438 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 14:13:49,438 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 14:13:49,438 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 96 [2020-10-12 14:13:49,438 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 14:13:49,614 INFO L134 CoverageAnalysis]: Checked inductivity of 445 backedges. 135 proven. 3 refuted. 0 times theorem prover too weak. 307 trivial. 0 not checked. [2020-10-12 14:13:49,614 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [525688453] [2020-10-12 14:13:49,615 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 14:13:49,615 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-12 14:13:49,615 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [359752410] [2020-10-12 14:13:49,616 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-12 14:13:49,616 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 14:13:49,616 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-12 14:13:49,617 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-12 14:13:49,617 INFO L87 Difference]: Start difference. First operand 9638 states and 11173 transitions. Second operand 5 states. [2020-10-12 14:13:55,962 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 14:13:55,962 INFO L93 Difference]: Finished difference Result 16219 states and 19224 transitions. [2020-10-12 14:13:55,970 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-12 14:13:55,970 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 549 [2020-10-12 14:13:55,971 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 14:13:56,006 INFO L225 Difference]: With dead ends: 16219 [2020-10-12 14:13:56,006 INFO L226 Difference]: Without dead ends: 9652 [2020-10-12 14:13:56,025 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 9 SyntacticMatches, 2 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-12 14:13:56,035 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9652 states. [2020-10-12 14:13:56,250 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9652 to 9638. [2020-10-12 14:13:56,250 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9638 states. [2020-10-12 14:13:56,269 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9638 states to 9638 states and 11167 transitions. [2020-10-12 14:13:56,270 INFO L78 Accepts]: Start accepts. Automaton has 9638 states and 11167 transitions. Word has length 549 [2020-10-12 14:13:56,271 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 14:13:56,271 INFO L479 AbstractCegarLoop]: Abstraction has 9638 states and 11167 transitions. [2020-10-12 14:13:56,271 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-12 14:13:56,271 INFO L276 IsEmpty]: Start isEmpty. Operand 9638 states and 11167 transitions. [2020-10-12 14:13:56,282 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 577 [2020-10-12 14:13:56,282 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 14:13:56,283 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, 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 14:13:56,283 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-12 14:13:56,284 INFO L427 AbstractCegarLoop]: === Iteration 12 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 14:13:56,284 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 14:13:56,285 INFO L82 PathProgramCache]: Analyzing trace with hash 1940570830, now seen corresponding path program 1 times [2020-10-12 14:13:56,285 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 14:13:56,286 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [810932052] [2020-10-12 14:13:56,286 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 14:13:56,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:13:56,559 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:13:57,127 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:13:57,496 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:13:59,279 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:13:59,280 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 590 [2020-10-12 14:13:59,280 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-12 14:13:59,280 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2816 [2020-10-12 14:13:59,280 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:13:59,280 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 14:13:59,280 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 539 [2020-10-12 14:13:59,280 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 21 [2020-10-12 14:13:59,281 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 14:13:59,498 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 14:13:59,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:13:59,501 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:13:59,504 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:13:59,504 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 14:13:59,504 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 14:13:59,504 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 14:13:59,504 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:13:59,504 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 14:13:59,504 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 14:13:59,504 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 14:13:59,505 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 14:13:59,523 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-12 14:13:59,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:13:59,539 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:13:59,595 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:13:59,595 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 287 [2020-10-12 14:13:59,595 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 14:13:59,596 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 58 [2020-10-12 14:13:59,596 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:13:59,596 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 14:13:59,596 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 14:13:59,596 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 14:13:59,596 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 14:13:59,665 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 294 [2020-10-12 14:13:59,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:13:59,671 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:13:59,690 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:13:59,690 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 112 [2020-10-12 14:13:59,690 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 14:13:59,691 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-10-12 14:13:59,691 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:13:59,691 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 14:13:59,691 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 14:13:59,691 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 14:13:59,691 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 14:13:59,715 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 405 [2020-10-12 14:13:59,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:13:59,759 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:13:59,825 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:13:59,825 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 129 [2020-10-12 14:13:59,825 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 14:13:59,826 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 82 [2020-10-12 14:13:59,826 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:13:59,826 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 14:13:59,826 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 14:13:59,826 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 123 [2020-10-12 14:13:59,826 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 14:14:00,380 INFO L134 CoverageAnalysis]: Checked inductivity of 482 backedges. 135 proven. 3 refuted. 0 times theorem prover too weak. 344 trivial. 0 not checked. [2020-10-12 14:14:00,380 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [810932052] [2020-10-12 14:14:00,380 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 14:14:00,381 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-12 14:14:00,381 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [166971365] [2020-10-12 14:14:00,384 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-12 14:14:00,384 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 14:14:00,384 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-12 14:14:00,385 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-12 14:14:00,385 INFO L87 Difference]: Start difference. First operand 9638 states and 11167 transitions. Second operand 5 states. [2020-10-12 14:14:08,937 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 14:14:08,939 INFO L93 Difference]: Finished difference Result 16219 states and 19212 transitions. [2020-10-12 14:14:08,944 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-12 14:14:08,944 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 576 [2020-10-12 14:14:08,945 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 14:14:08,977 INFO L225 Difference]: With dead ends: 16219 [2020-10-12 14:14:08,978 INFO L226 Difference]: Without dead ends: 9652 [2020-10-12 14:14:08,997 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 10 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-12 14:14:09,018 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9652 states. [2020-10-12 14:14:09,198 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9652 to 9636. [2020-10-12 14:14:09,199 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9636 states. [2020-10-12 14:14:09,218 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9636 states to 9636 states and 11147 transitions. [2020-10-12 14:14:09,219 INFO L78 Accepts]: Start accepts. Automaton has 9636 states and 11147 transitions. Word has length 576 [2020-10-12 14:14:09,220 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 14:14:09,221 INFO L479 AbstractCegarLoop]: Abstraction has 9636 states and 11147 transitions. [2020-10-12 14:14:09,221 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-12 14:14:09,221 INFO L276 IsEmpty]: Start isEmpty. Operand 9636 states and 11147 transitions. [2020-10-12 14:14:09,237 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 603 [2020-10-12 14:14:09,237 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 14:14:09,238 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, 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 14:14:09,238 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-12 14:14:09,239 INFO L427 AbstractCegarLoop]: === Iteration 13 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 14:14:09,239 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 14:14:09,239 INFO L82 PathProgramCache]: Analyzing trace with hash 1743896176, now seen corresponding path program 1 times [2020-10-12 14:14:09,240 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 14:14:09,240 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [305377432] [2020-10-12 14:14:09,240 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 14:14:09,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:14:09,524 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:14:09,688 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:14:12,098 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:14:12,099 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 616 [2020-10-12 14:14:12,099 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 14:14:12,099 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2685 [2020-10-12 14:14:12,099 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:14:12,099 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 14:14:12,099 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 565 [2020-10-12 14:14:12,100 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 50 [2020-10-12 14:14:12,100 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 14:14:12,209 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 14:14:12,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:14:12,212 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:14:12,214 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:14:12,214 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 14:14:12,214 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 14:14:12,214 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 14:14:12,214 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:14:12,214 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 14:14:12,215 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 14:14:12,215 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 14:14:12,215 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 14:14:12,231 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-12 14:14:12,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:14:12,245 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:14:12,304 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:14:12,304 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 287 [2020-10-12 14:14:12,304 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 14:14:12,304 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 60 [2020-10-12 14:14:12,305 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:14:12,305 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 14:14:12,305 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 14:14:12,305 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 14:14:12,305 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 14:14:12,372 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 294 [2020-10-12 14:14:12,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:14:12,380 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:14:12,412 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:14:12,413 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 112 [2020-10-12 14:14:12,413 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 14:14:12,413 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 33 [2020-10-12 14:14:12,413 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:14:12,413 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 14:14:12,413 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 14:14:12,414 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 14:14:12,414 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 14:14:12,434 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 405 [2020-10-12 14:14:12,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:14:12,473 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:14:12,548 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:14:12,548 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 155 [2020-10-12 14:14:12,548 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 14:14:12,548 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 91 [2020-10-12 14:14:12,548 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:14:12,548 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 14:14:12,549 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 14:14:12,549 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 149 [2020-10-12 14:14:12,549 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 14:14:13,069 INFO L134 CoverageAnalysis]: Checked inductivity of 508 backedges. 135 proven. 3 refuted. 0 times theorem prover too weak. 370 trivial. 0 not checked. [2020-10-12 14:14:13,070 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [305377432] [2020-10-12 14:14:13,070 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 14:14:13,070 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-12 14:14:13,071 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1090181323] [2020-10-12 14:14:13,071 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-12 14:14:13,071 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 14:14:13,072 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-12 14:14:13,073 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-12 14:14:13,073 INFO L87 Difference]: Start difference. First operand 9636 states and 11147 transitions. Second operand 5 states. [2020-10-12 14:14:23,017 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 14:14:23,017 INFO L93 Difference]: Finished difference Result 20848 states and 24889 transitions. [2020-10-12 14:14:23,020 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-12 14:14:23,020 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 602 [2020-10-12 14:14:23,021 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 14:14:23,047 INFO L225 Difference]: With dead ends: 20848 [2020-10-12 14:14:23,047 INFO L226 Difference]: Without dead ends: 11525 [2020-10-12 14:14:23,066 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-12 14:14:23,078 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11525 states. [2020-10-12 14:14:23,231 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11525 to 11513. [2020-10-12 14:14:23,231 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11513 states. [2020-10-12 14:14:23,253 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11513 states to 11513 states and 13497 transitions. [2020-10-12 14:14:23,253 INFO L78 Accepts]: Start accepts. Automaton has 11513 states and 13497 transitions. Word has length 602 [2020-10-12 14:14:23,255 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 14:14:23,255 INFO L479 AbstractCegarLoop]: Abstraction has 11513 states and 13497 transitions. [2020-10-12 14:14:23,255 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-12 14:14:23,255 INFO L276 IsEmpty]: Start isEmpty. Operand 11513 states and 13497 transitions. [2020-10-12 14:14:23,264 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 616 [2020-10-12 14:14:23,265 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 14:14:23,265 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 14:14:23,266 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-12 14:14:23,266 INFO L427 AbstractCegarLoop]: === Iteration 14 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 14:14:23,266 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 14:14:23,266 INFO L82 PathProgramCache]: Analyzing trace with hash 1942847870, now seen corresponding path program 1 times [2020-10-12 14:14:23,267 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 14:14:23,269 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1089586634] [2020-10-12 14:14:23,269 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 14:14:23,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:14:23,489 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:14:23,608 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:14:24,864 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:14:26,288 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:14:26,289 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 631 [2020-10-12 14:14:26,289 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-12 14:14:26,289 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2876 [2020-10-12 14:14:26,289 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:14:26,289 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 14:14:26,290 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 487 [2020-10-12 14:14:26,290 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 94 [2020-10-12 14:14:26,290 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 14:14:26,429 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 14:14:26,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:14:26,432 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:14:26,433 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:14:26,433 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 14:14:26,433 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 14:14:26,434 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 14:14:26,434 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:14:26,434 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 14:14:26,434 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 14:14:26,435 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 14:14:26,435 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 14:14:26,463 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-12 14:14:26,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:14:26,479 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:14:26,545 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:14:26,546 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 287 [2020-10-12 14:14:26,546 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 14:14:26,546 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 68 [2020-10-12 14:14:26,546 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:14:26,546 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 14:14:26,546 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 14:14:26,547 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 14:14:26,547 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 14:14:26,697 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 294 [2020-10-12 14:14:26,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:14:26,706 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:14:26,725 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:14:26,725 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 112 [2020-10-12 14:14:26,725 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 14:14:26,726 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-10-12 14:14:26,726 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:14:26,726 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 14:14:26,726 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 14:14:26,726 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 14:14:26,726 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 14:14:26,743 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 405 [2020-10-12 14:14:26,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:14:26,760 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:14:26,796 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:14:26,797 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 77 [2020-10-12 14:14:26,797 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 14:14:26,797 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 42 [2020-10-12 14:14:26,797 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:14:26,797 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 14:14:26,797 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 14:14:26,797 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 71 [2020-10-12 14:14:26,798 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 14:14:26,815 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 481 [2020-10-12 14:14:26,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:14:26,842 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:14:26,915 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:14:26,915 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 92 [2020-10-12 14:14:26,915 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 14:14:26,915 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 82 [2020-10-12 14:14:26,916 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:14:26,916 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 14:14:26,916 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 14:14:26,916 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 92 [2020-10-12 14:14:26,916 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 14:14:27,118 INFO L134 CoverageAnalysis]: Checked inductivity of 697 backedges. 435 proven. 2 refuted. 0 times theorem prover too weak. 260 trivial. 0 not checked. [2020-10-12 14:14:27,118 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1089586634] [2020-10-12 14:14:27,119 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 14:14:27,119 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-12 14:14:27,119 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1186408401] [2020-10-12 14:14:27,120 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-12 14:14:27,120 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 14:14:27,120 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-12 14:14:27,120 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-12 14:14:27,120 INFO L87 Difference]: Start difference. First operand 11513 states and 13497 transitions. Second operand 7 states. [2020-10-12 14:14:45,387 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 14:14:45,387 INFO L93 Difference]: Finished difference Result 21940 states and 26937 transitions. [2020-10-12 14:14:45,390 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-12 14:14:45,390 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 615 [2020-10-12 14:14:45,392 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 14:14:45,431 INFO L225 Difference]: With dead ends: 21940 [2020-10-12 14:14:45,431 INFO L226 Difference]: Without dead ends: 14134 [2020-10-12 14:14:45,449 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-12 14:14:45,464 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14134 states. [2020-10-12 14:14:45,856 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14134 to 14108. [2020-10-12 14:14:45,856 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14108 states. [2020-10-12 14:14:45,889 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14108 states to 14108 states and 16815 transitions. [2020-10-12 14:14:45,890 INFO L78 Accepts]: Start accepts. Automaton has 14108 states and 16815 transitions. Word has length 615 [2020-10-12 14:14:45,891 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 14:14:45,891 INFO L479 AbstractCegarLoop]: Abstraction has 14108 states and 16815 transitions. [2020-10-12 14:14:45,892 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-12 14:14:45,892 INFO L276 IsEmpty]: Start isEmpty. Operand 14108 states and 16815 transitions. [2020-10-12 14:14:45,906 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 652 [2020-10-12 14:14:45,907 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 14:14:45,907 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, 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 14:14:45,908 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-10-12 14:14:45,908 INFO L427 AbstractCegarLoop]: === Iteration 15 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 14:14:45,908 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 14:14:45,908 INFO L82 PathProgramCache]: Analyzing trace with hash 851530215, now seen corresponding path program 1 times [2020-10-12 14:14:45,909 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 14:14:45,909 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [169468870] [2020-10-12 14:14:45,909 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 14:14:46,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:14:46,119 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:14:46,249 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:14:47,636 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:14:47,916 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:14:49,114 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:14:49,114 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 665 [2020-10-12 14:14:49,114 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-12 14:14:49,114 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3063 [2020-10-12 14:14:49,114 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:14:49,114 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-12 14:14:49,115 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 486 [2020-10-12 14:14:49,115 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 178 [2020-10-12 14:14:49,115 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 14:14:49,260 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 14:14:49,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:14:49,262 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:14:49,264 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:14:49,264 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 14:14:49,264 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 14:14:49,264 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 14:14:49,265 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:14:49,265 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 14:14:49,265 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 14:14:49,265 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 14:14:49,265 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 14:14:49,293 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-12 14:14:49,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:14:49,308 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:14:49,369 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:14:49,369 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 275 [2020-10-12 14:14:49,369 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 14:14:49,369 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 63 [2020-10-12 14:14:49,369 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:14:49,370 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 14:14:49,370 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 14:14:49,370 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 14:14:49,370 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 14:14:49,436 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-12 14:14:49,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:14:49,488 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:14:49,667 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:14:49,667 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 201 [2020-10-12 14:14:49,668 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 14:14:49,668 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 200 [2020-10-12 14:14:49,668 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:14:49,668 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 14:14:49,668 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 14:14:49,669 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 195 [2020-10-12 14:14:49,669 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 14:14:49,742 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 482 [2020-10-12 14:14:49,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:14:49,797 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:14:49,889 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:14:50,172 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:14:50,173 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 127 [2020-10-12 14:14:50,173 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 14:14:50,174 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 396 [2020-10-12 14:14:50,174 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:14:50,174 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 14:14:50,175 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 14:14:50,175 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 127 [2020-10-12 14:14:50,175 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 14:14:50,553 INFO L134 CoverageAnalysis]: Checked inductivity of 580 backedges. 332 proven. 45 refuted. 0 times theorem prover too weak. 203 trivial. 0 not checked. [2020-10-12 14:14:50,554 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [169468870] [2020-10-12 14:14:50,554 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 14:14:50,554 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-12 14:14:50,555 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1950257237] [2020-10-12 14:14:50,555 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-12 14:14:50,555 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 14:14:50,556 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-12 14:14:50,556 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-10-12 14:14:50,556 INFO L87 Difference]: Start difference. First operand 14108 states and 16815 transitions. Second operand 6 states. [2020-10-12 14:15:03,706 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 14:15:03,707 INFO L93 Difference]: Finished difference Result 32984 states and 40761 transitions. [2020-10-12 14:15:03,709 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-12 14:15:03,709 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 651 [2020-10-12 14:15:03,710 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 14:15:03,759 INFO L225 Difference]: With dead ends: 32984 [2020-10-12 14:15:03,759 INFO L226 Difference]: Without dead ends: 22585 [2020-10-12 14:15:03,778 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-10-12 14:15:03,797 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22585 states. [2020-10-12 14:15:04,105 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22585 to 22525. [2020-10-12 14:15:04,105 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22525 states. [2020-10-12 14:15:04,142 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22525 states to 22525 states and 27559 transitions. [2020-10-12 14:15:04,143 INFO L78 Accepts]: Start accepts. Automaton has 22525 states and 27559 transitions. Word has length 651 [2020-10-12 14:15:04,143 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 14:15:04,144 INFO L479 AbstractCegarLoop]: Abstraction has 22525 states and 27559 transitions. [2020-10-12 14:15:04,144 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-12 14:15:04,144 INFO L276 IsEmpty]: Start isEmpty. Operand 22525 states and 27559 transitions. [2020-10-12 14:15:04,161 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 689 [2020-10-12 14:15:04,162 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 14:15:04,162 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 14:15:04,163 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-10-12 14:15:04,163 INFO L427 AbstractCegarLoop]: === Iteration 16 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 14:15:04,163 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 14:15:04,163 INFO L82 PathProgramCache]: Analyzing trace with hash -702110418, now seen corresponding path program 1 times [2020-10-12 14:15:04,164 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 14:15:04,164 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2000135992] [2020-10-12 14:15:04,164 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 14:15:04,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:15:04,405 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:15:04,602 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:15:05,155 FATAL L256 erpolLogProxyWrapper]: Now shrinking...