/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=WIDESTAMONGSMALL --traceabstraction.additional.smt.options tolerance=0.4 --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/Problem12_label38.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-14 02:50:33,390 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-14 02:50:33,392 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-14 02:50:33,416 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-14 02:50:33,417 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-14 02:50:33,418 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-14 02:50:33,419 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-14 02:50:33,421 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-14 02:50:33,422 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-14 02:50:33,423 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-14 02:50:33,424 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-14 02:50:33,425 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-14 02:50:33,425 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-14 02:50:33,426 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-14 02:50:33,427 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-14 02:50:33,429 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-14 02:50:33,429 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-14 02:50:33,430 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-14 02:50:33,432 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-14 02:50:33,434 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-14 02:50:33,435 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-14 02:50:33,436 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-14 02:50:33,437 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-14 02:50:33,438 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-14 02:50:33,440 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-14 02:50:33,440 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-14 02:50:33,441 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-14 02:50:33,441 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-14 02:50:33,442 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-14 02:50:33,443 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-14 02:50:33,443 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-14 02:50:33,444 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-14 02:50:33,444 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-14 02:50:33,445 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-14 02:50:33,448 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-14 02:50:33,448 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-14 02:50:33,449 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-14 02:50:33,449 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-14 02:50:33,449 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-14 02:50:33,451 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-14 02:50:33,451 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-14 02:50:33,452 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-14 02:50:33,498 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-14 02:50:33,498 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-14 02:50:33,500 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-14 02:50:33,500 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-14 02:50:33,500 INFO L138 SettingsManager]: * Use SBE=true [2020-10-14 02:50:33,500 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-14 02:50:33,500 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-14 02:50:33,501 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-14 02:50:33,501 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-14 02:50:33,502 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-14 02:50:33,502 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-14 02:50:33,502 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-14 02:50:33,503 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-14 02:50:33,503 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-14 02:50:33,504 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-14 02:50:33,504 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-14 02:50:33,504 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-14 02:50:33,504 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-14 02:50:33,505 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-14 02:50:33,505 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-14 02:50:33,505 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-14 02:50:33,505 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-14 02:50:33,505 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-14 02:50:33,506 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-14 02:50:33,506 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-14 02:50:33,506 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-14 02:50:33,506 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-14 02:50:33,506 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-14 02:50:33,506 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-14 02:50:33,507 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=WIDESTAMONGSMALL;tolerance=0.4;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=WIDESTAMONGSMALL;tolerance=0.4;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=WIDESTAMONGSMALL;tolerance=0.4;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=WIDESTAMONGSMALL;tolerance=0.4;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=WIDESTAMONGSMALL;tolerance=0.4;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=WIDESTAMONGSMALL;tolerance=0.4;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=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true;unknown-allowed=true; [2020-10-14 02:50:33,834 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-14 02:50:33,851 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-14 02:50:33,856 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-14 02:50:33,858 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-14 02:50:33,859 INFO L275 PluginConnector]: CDTParser initialized [2020-10-14 02:50:33,860 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem12_label38.c [2020-10-14 02:50:33,918 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/29f55bf16/6ba4587f0c014e199f9aeccd914dfff6/FLAG67ad9dfc3 [2020-10-14 02:50:34,669 INFO L306 CDTParser]: Found 1 translation units. [2020-10-14 02:50:34,670 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem12_label38.c [2020-10-14 02:50:34,705 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/29f55bf16/6ba4587f0c014e199f9aeccd914dfff6/FLAG67ad9dfc3 [2020-10-14 02:50:35,187 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/29f55bf16/6ba4587f0c014e199f9aeccd914dfff6 [2020-10-14 02:50:35,197 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-14 02:50:35,199 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-14 02:50:35,201 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-14 02:50:35,201 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-14 02:50:35,205 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-14 02:50:35,206 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 02:50:35" (1/1) ... [2020-10-14 02:50:35,209 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5a3fa750 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 02:50:35, skipping insertion in model container [2020-10-14 02:50:35,209 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 02:50:35" (1/1) ... [2020-10-14 02:50:35,217 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-14 02:50:35,343 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-14 02:50:37,011 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-14 02:50:37,018 INFO L203 MainTranslator]: Completed pre-run [2020-10-14 02:50:37,611 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-14 02:50:37,637 INFO L208 MainTranslator]: Completed translation [2020-10-14 02:50:37,638 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 02:50:37 WrapperNode [2020-10-14 02:50:37,638 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-14 02:50:37,639 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-14 02:50:37,639 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-14 02:50:37,639 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-14 02:50:37,653 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 02:50:37" (1/1) ... [2020-10-14 02:50:37,653 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 02:50:37" (1/1) ... [2020-10-14 02:50:37,703 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 02:50:37" (1/1) ... [2020-10-14 02:50:37,704 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 02:50:37" (1/1) ... [2020-10-14 02:50:37,808 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 02:50:37" (1/1) ... [2020-10-14 02:50:37,836 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 02:50:37" (1/1) ... [2020-10-14 02:50:37,870 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 02:50:37" (1/1) ... [2020-10-14 02:50:37,896 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-14 02:50:37,896 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-14 02:50:37,896 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-14 02:50:37,897 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-14 02:50:37,898 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 02:50:37" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-14 02:50:37,959 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-14 02:50:37,959 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-14 02:50:37,959 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-10-14 02:50:37,959 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2020-10-14 02:50:37,959 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2020-10-14 02:50:37,960 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output4 [2020-10-14 02:50:37,960 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-14 02:50:37,960 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-10-14 02:50:37,960 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2020-10-14 02:50:37,960 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2020-10-14 02:50:37,961 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output4 [2020-10-14 02:50:37,961 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-14 02:50:37,961 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-14 02:50:37,961 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-14 02:50:37,961 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-14 02:50:37,961 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-14 02:50:37,962 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-14 02:50:42,711 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-14 02:50:42,712 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-14 02:50:42,723 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 02:50:42 BoogieIcfgContainer [2020-10-14 02:50:42,723 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-14 02:50:42,727 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-14 02:50:42,728 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-14 02:50:42,731 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-14 02:50:42,731 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.10 02:50:35" (1/3) ... [2020-10-14 02:50:42,732 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@70d24af3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 02:50:42, skipping insertion in model container [2020-10-14 02:50:42,732 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 02:50:37" (2/3) ... [2020-10-14 02:50:42,733 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@70d24af3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 02:50:42, skipping insertion in model container [2020-10-14 02:50:42,733 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 02:50:42" (3/3) ... [2020-10-14 02:50:42,735 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem12_label38.c [2020-10-14 02:50:42,745 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-14 02:50:42,754 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-14 02:50:42,769 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-14 02:50:42,799 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-14 02:50:42,799 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-14 02:50:42,799 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-14 02:50:42,800 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-14 02:50:42,800 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-14 02:50:42,800 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-14 02:50:42,800 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-14 02:50:42,800 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-14 02:50:42,837 INFO L276 IsEmpty]: Start isEmpty. Operand 839 states. [2020-10-14 02:50:42,844 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2020-10-14 02:50:42,845 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 02:50:42,846 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] [2020-10-14 02:50:42,846 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 02:50:42,852 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 02:50:42,853 INFO L82 PathProgramCache]: Analyzing trace with hash -1431162507, now seen corresponding path program 1 times [2020-10-14 02:50:42,864 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 02:50:42,865 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [588150911] [2020-10-14 02:50:42,865 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 02:50:43,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:50:43,077 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:50:43,443 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:50:43,443 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 38 [2020-10-14 02:50:43,444 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 02:50:43,444 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 412 [2020-10-14 02:50:43,446 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:50:43,447 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:50:43,447 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 02:50:43,447 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 02:50:43,447 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 32 [2020-10-14 02:50:43,447 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-14 02:50:43,572 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 02:50:43,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:50:43,583 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:50:43,595 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:50:43,595 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 02:50:43,596 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 02:50:43,596 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-14 02:50:43,596 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:50:43,597 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:50:43,597 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 02:50:43,597 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 02:50:43,598 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 02:50:43,598 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 02:50:43,612 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 02:50:43,613 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [588150911] [2020-10-14 02:50:43,615 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 02:50:43,616 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-14 02:50:43,617 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [584775875] [2020-10-14 02:50:43,622 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-14 02:50:43,623 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 02:50:43,636 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-14 02:50:43,637 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 02:50:43,639 INFO L87 Difference]: Start difference. First operand 839 states. Second operand 4 states. [2020-10-14 02:50:51,167 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 02:50:51,168 INFO L93 Difference]: Finished difference Result 2471 states and 4736 transitions. [2020-10-14 02:50:51,168 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 02:50:51,170 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 30 [2020-10-14 02:50:51,171 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 02:50:51,201 INFO L225 Difference]: With dead ends: 2471 [2020-10-14 02:50:51,202 INFO L226 Difference]: Without dead ends: 1568 [2020-10-14 02:50:51,211 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 [2020-10-14 02:50:51,230 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1568 states. [2020-10-14 02:50:51,356 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1568 to 1553. [2020-10-14 02:50:51,357 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1553 states. [2020-10-14 02:50:51,366 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1553 states to 1553 states and 2521 transitions. [2020-10-14 02:50:51,368 INFO L78 Accepts]: Start accepts. Automaton has 1553 states and 2521 transitions. Word has length 30 [2020-10-14 02:50:51,368 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 02:50:51,368 INFO L479 AbstractCegarLoop]: Abstraction has 1553 states and 2521 transitions. [2020-10-14 02:50:51,369 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-14 02:50:51,370 INFO L276 IsEmpty]: Start isEmpty. Operand 1553 states and 2521 transitions. [2020-10-14 02:50:51,378 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2020-10-14 02:50:51,378 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 02:50:51,379 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 02:50:51,380 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-14 02:50:51,380 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 02:50:51,380 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 02:50:51,381 INFO L82 PathProgramCache]: Analyzing trace with hash -809031011, now seen corresponding path program 1 times [2020-10-14 02:50:51,381 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 02:50:51,381 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1272036536] [2020-10-14 02:50:51,382 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 02:50:51,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:50:51,473 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:50:51,523 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:50:51,967 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:50:51,968 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 115 [2020-10-14 02:50:51,968 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 02:50:51,968 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 527 [2020-10-14 02:50:51,969 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:50:51,969 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:50:51,969 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 02:50:51,970 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 85 [2020-10-14 02:50:51,970 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 29 [2020-10-14 02:50:51,970 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 02:50:52,025 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 02:50:52,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:50:52,031 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:50:52,034 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:50:52,034 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 02:50:52,034 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 02:50:52,034 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-14 02:50:52,035 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:50:52,035 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:50:52,035 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 02:50:52,036 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 02:50:52,036 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 02:50:52,037 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 02:50:52,053 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 02:50:52,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:50:52,084 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:50:52,144 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:50:52,153 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-10-14 02:50:52,154 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 02:50:52,154 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 70 [2020-10-14 02:50:52,155 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:50:52,155 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:50:52,155 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 02:50:52,155 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 02:50:52,156 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 70 [2020-10-14 02:50:52,156 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 02:50:52,208 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 22 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 02:50:52,209 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1272036536] [2020-10-14 02:50:52,209 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 02:50:52,209 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-14 02:50:52,210 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [268613308] [2020-10-14 02:50:52,212 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 02:50:52,212 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 02:50:52,212 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 02:50:52,213 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-14 02:50:52,213 INFO L87 Difference]: Start difference. First operand 1553 states and 2521 transitions. Second operand 5 states. [2020-10-14 02:51:00,221 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 02:51:00,221 INFO L93 Difference]: Finished difference Result 4672 states and 7649 transitions. [2020-10-14 02:51:00,222 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 02:51:00,222 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 105 [2020-10-14 02:51:00,223 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 02:51:00,240 INFO L225 Difference]: With dead ends: 4672 [2020-10-14 02:51:00,240 INFO L226 Difference]: Without dead ends: 3125 [2020-10-14 02:51:00,245 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-14 02:51:00,250 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3125 states. [2020-10-14 02:51:00,317 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3125 to 3109. [2020-10-14 02:51:00,318 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3109 states. [2020-10-14 02:51:00,328 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3109 states to 3109 states and 4247 transitions. [2020-10-14 02:51:00,329 INFO L78 Accepts]: Start accepts. Automaton has 3109 states and 4247 transitions. Word has length 105 [2020-10-14 02:51:00,330 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 02:51:00,330 INFO L479 AbstractCegarLoop]: Abstraction has 3109 states and 4247 transitions. [2020-10-14 02:51:00,330 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 02:51:00,330 INFO L276 IsEmpty]: Start isEmpty. Operand 3109 states and 4247 transitions. [2020-10-14 02:51:00,332 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2020-10-14 02:51:00,332 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 02:51:00,333 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 02:51:00,333 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-14 02:51:00,333 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 02:51:00,333 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 02:51:00,334 INFO L82 PathProgramCache]: Analyzing trace with hash -813548772, now seen corresponding path program 1 times [2020-10-14 02:51:00,334 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 02:51:00,334 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [318873523] [2020-10-14 02:51:00,334 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 02:51:00,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:51:00,394 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:51:00,599 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:51:00,929 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:51:01,321 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:51:01,321 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 118 [2020-10-14 02:51:01,322 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 02:51:01,322 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 950 [2020-10-14 02:51:01,322 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:51:01,322 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:51:01,323 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 02:51:01,323 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 88 [2020-10-14 02:51:01,323 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 29 [2020-10-14 02:51:01,324 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 02:51:01,396 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 02:51:01,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:51:01,399 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:51:01,402 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:51:01,402 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 02:51:01,403 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 02:51:01,403 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 02:51:01,403 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:51:01,403 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:51:01,404 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 02:51:01,404 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 02:51:01,404 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 02:51:01,404 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 02:51:01,419 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 02:51:01,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:51:01,452 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:51:01,528 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:51:01,528 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 79 [2020-10-14 02:51:01,529 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 02:51:01,529 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 87 [2020-10-14 02:51:01,529 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:51:01,530 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:51:01,530 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 02:51:01,530 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 02:51:01,530 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 73 [2020-10-14 02:51:01,531 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 02:51:01,592 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 22 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 02:51:01,592 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [318873523] [2020-10-14 02:51:01,593 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 02:51:01,593 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-14 02:51:01,593 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [439145273] [2020-10-14 02:51:01,594 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 02:51:01,595 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 02:51:01,595 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 02:51:01,595 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-14 02:51:01,595 INFO L87 Difference]: Start difference. First operand 3109 states and 4247 transitions. Second operand 5 states. [2020-10-14 02:51:09,641 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 02:51:09,644 INFO L93 Difference]: Finished difference Result 7784 states and 11134 transitions. [2020-10-14 02:51:09,645 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 02:51:09,645 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 108 [2020-10-14 02:51:09,646 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 02:51:09,670 INFO L225 Difference]: With dead ends: 7784 [2020-10-14 02:51:09,671 INFO L226 Difference]: Without dead ends: 4681 [2020-10-14 02:51:09,679 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 5 SyntacticMatches, 2 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-14 02:51:09,684 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4681 states. [2020-10-14 02:51:09,820 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4681 to 4673. [2020-10-14 02:51:09,820 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4673 states. [2020-10-14 02:51:09,834 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4673 states to 4673 states and 6164 transitions. [2020-10-14 02:51:09,834 INFO L78 Accepts]: Start accepts. Automaton has 4673 states and 6164 transitions. Word has length 108 [2020-10-14 02:51:09,835 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 02:51:09,835 INFO L479 AbstractCegarLoop]: Abstraction has 4673 states and 6164 transitions. [2020-10-14 02:51:09,835 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 02:51:09,836 INFO L276 IsEmpty]: Start isEmpty. Operand 4673 states and 6164 transitions. [2020-10-14 02:51:09,839 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2020-10-14 02:51:09,840 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 02:51:09,840 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 02:51:09,840 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-14 02:51:09,840 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 02:51:09,841 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 02:51:09,841 INFO L82 PathProgramCache]: Analyzing trace with hash 1661814604, now seen corresponding path program 1 times [2020-10-14 02:51:09,841 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 02:51:09,842 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [278297855] [2020-10-14 02:51:09,842 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 02:51:09,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:51:09,896 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:51:10,082 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:51:10,661 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:51:10,662 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 158 [2020-10-14 02:51:10,662 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 02:51:10,662 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 786 [2020-10-14 02:51:10,663 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:51:10,663 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:51:10,663 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 02:51:10,663 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 128 [2020-10-14 02:51:10,663 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 29 [2020-10-14 02:51:10,663 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 02:51:10,734 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 02:51:10,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:51:10,738 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:51:10,740 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:51:10,741 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 02:51:10,741 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 02:51:10,741 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 02:51:10,742 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:51:10,742 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:51:10,742 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 02:51:10,743 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 02:51:10,743 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 02:51:10,744 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-14 02:51:10,764 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 02:51:10,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:51:10,818 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:51:10,946 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:51:10,947 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 119 [2020-10-14 02:51:10,947 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 02:51:10,947 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 155 [2020-10-14 02:51:10,947 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:51:10,948 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:51:10,948 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 02:51:10,948 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 02:51:10,948 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 113 [2020-10-14 02:51:10,948 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 02:51:11,015 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 22 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 02:51:11,016 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [278297855] [2020-10-14 02:51:11,017 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 02:51:11,017 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-14 02:51:11,017 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [887877601] [2020-10-14 02:51:11,019 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 02:51:11,019 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 02:51:11,020 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 02:51:11,020 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-14 02:51:11,020 INFO L87 Difference]: Start difference. First operand 4673 states and 6164 transitions. Second operand 5 states. [2020-10-14 02:51:20,967 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 02:51:20,967 INFO L93 Difference]: Finished difference Result 14024 states and 18821 transitions. [2020-10-14 02:51:20,968 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 02:51:20,968 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 148 [2020-10-14 02:51:20,969 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 02:51:21,016 INFO L225 Difference]: With dead ends: 14024 [2020-10-14 02:51:21,016 INFO L226 Difference]: Without dead ends: 9357 [2020-10-14 02:51:21,032 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-14 02:51:21,043 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9357 states. [2020-10-14 02:51:21,250 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9357 to 9340. [2020-10-14 02:51:21,250 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9340 states. [2020-10-14 02:51:21,275 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9340 states to 9340 states and 12074 transitions. [2020-10-14 02:51:21,276 INFO L78 Accepts]: Start accepts. Automaton has 9340 states and 12074 transitions. Word has length 148 [2020-10-14 02:51:21,278 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 02:51:21,278 INFO L479 AbstractCegarLoop]: Abstraction has 9340 states and 12074 transitions. [2020-10-14 02:51:21,278 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 02:51:21,278 INFO L276 IsEmpty]: Start isEmpty. Operand 9340 states and 12074 transitions. [2020-10-14 02:51:21,285 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2020-10-14 02:51:21,285 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 02:51:21,286 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-14 02:51:21,286 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-14 02:51:21,286 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 02:51:21,286 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 02:51:21,287 INFO L82 PathProgramCache]: Analyzing trace with hash -1247826320, now seen corresponding path program 1 times [2020-10-14 02:51:21,287 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 02:51:21,287 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1676109100] [2020-10-14 02:51:21,287 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 02:51:21,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:51:21,356 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:51:21,466 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:51:21,641 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:51:22,065 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:51:22,243 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:51:23,167 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:51:23,167 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 189 [2020-10-14 02:51:23,167 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-14 02:51:23,168 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1837 [2020-10-14 02:51:23,168 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:51:23,168 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:51:23,168 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 02:51:23,169 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 85 [2020-10-14 02:51:23,169 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 75 [2020-10-14 02:51:23,169 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 02:51:23,228 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 02:51:23,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:51:23,230 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:51:23,234 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:51:23,234 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 02:51:23,235 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 02:51:23,235 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-14 02:51:23,235 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:51:23,235 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:51:23,236 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 02:51:23,236 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 02:51:23,236 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 02:51:23,236 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 02:51:23,253 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 02:51:23,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:51:23,274 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:51:23,314 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:51:23,314 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-10-14 02:51:23,315 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 02:51:23,315 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 48 [2020-10-14 02:51:23,315 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:51:23,315 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:51:23,316 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 02:51:23,316 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 02:51:23,319 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 70 [2020-10-14 02:51:23,319 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-14 02:51:23,339 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-10-14 02:51:23,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:51:23,368 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:51:23,460 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:51:23,460 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 73 [2020-10-14 02:51:23,460 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 02:51:23,460 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 101 [2020-10-14 02:51:23,461 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:51:23,461 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:51:23,461 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 02:51:23,461 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 02:51:23,462 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 73 [2020-10-14 02:51:23,462 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 02:51:23,544 INFO L134 CoverageAnalysis]: Checked inductivity of 118 backedges. 115 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-14 02:51:23,545 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1676109100] [2020-10-14 02:51:23,545 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 02:51:23,545 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 02:51:23,546 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [538535342] [2020-10-14 02:51:23,546 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 02:51:23,546 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 02:51:23,547 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 02:51:23,547 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 02:51:23,547 INFO L87 Difference]: Start difference. First operand 9340 states and 12074 transitions. Second operand 7 states. [2020-10-14 02:51:36,406 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 02:51:36,407 INFO L93 Difference]: Finished difference Result 23605 states and 31691 transitions. [2020-10-14 02:51:36,408 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-14 02:51:36,408 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 177 [2020-10-14 02:51:36,408 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 02:51:36,458 INFO L225 Difference]: With dead ends: 23605 [2020-10-14 02:51:36,458 INFO L226 Difference]: Without dead ends: 14271 [2020-10-14 02:51:36,480 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-14 02:51:36,497 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14271 states. [2020-10-14 02:51:36,796 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14271 to 14213. [2020-10-14 02:51:36,796 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14213 states. [2020-10-14 02:51:36,824 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14213 states to 14213 states and 18114 transitions. [2020-10-14 02:51:36,824 INFO L78 Accepts]: Start accepts. Automaton has 14213 states and 18114 transitions. Word has length 177 [2020-10-14 02:51:36,825 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 02:51:36,825 INFO L479 AbstractCegarLoop]: Abstraction has 14213 states and 18114 transitions. [2020-10-14 02:51:36,825 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 02:51:36,825 INFO L276 IsEmpty]: Start isEmpty. Operand 14213 states and 18114 transitions. [2020-10-14 02:51:36,830 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 180 [2020-10-14 02:51:36,830 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 02:51:36,830 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-14 02:51:36,830 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-14 02:51:36,831 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 02:51:36,831 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 02:51:36,831 INFO L82 PathProgramCache]: Analyzing trace with hash -676670626, now seen corresponding path program 1 times [2020-10-14 02:51:36,831 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 02:51:36,832 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [146529199] [2020-10-14 02:51:36,832 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 02:51:36,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:51:36,876 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:51:36,929 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:51:37,541 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:51:37,668 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:51:39,461 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:51:39,807 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:51:39,808 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 191 [2020-10-14 02:51:39,808 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-14 02:51:39,808 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2945 [2020-10-14 02:51:39,809 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:51:39,809 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:51:39,809 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 02:51:39,810 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 88 [2020-10-14 02:51:39,810 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 74 [2020-10-14 02:51:39,810 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 02:51:39,886 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 02:51:39,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:51:39,889 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:51:39,893 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:51:39,893 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 02:51:39,893 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 02:51:39,893 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-14 02:51:39,894 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:51:39,894 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:51:39,894 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 02:51:39,894 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 02:51:39,894 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 02:51:39,895 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 02:51:39,911 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 02:51:39,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:51:39,932 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:51:39,974 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:51:39,974 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 79 [2020-10-14 02:51:39,974 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 02:51:39,975 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 49 [2020-10-14 02:51:39,975 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:51:39,975 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:51:39,975 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 02:51:39,975 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 02:51:39,976 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 73 [2020-10-14 02:51:39,976 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 02:51:39,997 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2020-10-14 02:51:40,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:51:40,014 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:51:40,075 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:51:40,075 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 72 [2020-10-14 02:51:40,076 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 02:51:40,076 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 67 [2020-10-14 02:51:40,076 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:51:40,076 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:51:40,076 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 02:51:40,077 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 02:51:40,078 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 72 [2020-10-14 02:51:40,078 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 02:51:40,215 INFO L134 CoverageAnalysis]: Checked inductivity of 117 backedges. 114 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-14 02:51:40,216 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [146529199] [2020-10-14 02:51:40,217 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 02:51:40,217 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 02:51:40,217 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [295451315] [2020-10-14 02:51:40,218 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 02:51:40,218 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 02:51:40,218 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 02:51:40,219 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 02:51:40,219 INFO L87 Difference]: Start difference. First operand 14213 states and 18114 transitions. Second operand 7 states. [2020-10-14 02:52:00,462 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 02:52:00,462 INFO L93 Difference]: Finished difference Result 57021 states and 78478 transitions. [2020-10-14 02:52:00,464 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-14 02:52:00,464 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 179 [2020-10-14 02:52:00,465 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 02:52:00,655 INFO L225 Difference]: With dead ends: 57021 [2020-10-14 02:52:00,656 INFO L226 Difference]: Without dead ends: 42814 [2020-10-14 02:52:00,722 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 10 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-14 02:52:00,792 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42814 states. [2020-10-14 02:52:02,513 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42814 to 40288. [2020-10-14 02:52:02,516 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 40288 states. [2020-10-14 02:52:02,609 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40288 states to 40288 states and 51519 transitions. [2020-10-14 02:52:02,612 INFO L78 Accepts]: Start accepts. Automaton has 40288 states and 51519 transitions. Word has length 179 [2020-10-14 02:52:02,613 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 02:52:02,613 INFO L479 AbstractCegarLoop]: Abstraction has 40288 states and 51519 transitions. [2020-10-14 02:52:02,613 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 02:52:02,613 INFO L276 IsEmpty]: Start isEmpty. Operand 40288 states and 51519 transitions. [2020-10-14 02:52:02,619 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 179 [2020-10-14 02:52:02,619 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 02:52:02,619 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 02:52:02,620 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-14 02:52:02,620 INFO L427 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 02:52:02,620 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 02:52:02,620 INFO L82 PathProgramCache]: Analyzing trace with hash -1691233168, now seen corresponding path program 1 times [2020-10-14 02:52:02,621 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 02:52:02,621 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [572706684] [2020-10-14 02:52:02,621 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 02:52:02,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:52:02,685 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:52:02,755 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:52:03,950 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:52:03,951 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 188 [2020-10-14 02:52:03,951 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 02:52:03,951 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1290 [2020-10-14 02:52:03,951 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:52:03,952 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:52:03,952 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 02:52:03,952 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 158 [2020-10-14 02:52:03,952 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 29 [2020-10-14 02:52:03,952 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 02:52:04,025 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 02:52:04,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:52:04,028 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:52:04,031 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:52:04,032 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 02:52:04,032 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 02:52:04,033 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-14 02:52:04,033 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:52:04,033 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:52:04,033 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 02:52:04,034 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 02:52:04,034 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 02:52:04,034 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 02:52:04,064 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 02:52:04,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:52:04,117 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:52:04,227 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:52:04,227 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 149 [2020-10-14 02:52:04,228 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 02:52:04,228 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 130 [2020-10-14 02:52:04,228 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:52:04,228 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:52:04,229 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 02:52:04,229 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 02:52:04,229 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 143 [2020-10-14 02:52:04,229 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 02:52:04,513 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 22 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 02:52:04,513 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [572706684] [2020-10-14 02:52:04,513 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 02:52:04,514 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-14 02:52:04,514 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [225840502] [2020-10-14 02:52:04,515 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 02:52:04,515 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 02:52:04,515 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 02:52:04,516 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-14 02:52:04,516 INFO L87 Difference]: Start difference. First operand 40288 states and 51519 transitions. Second operand 5 states. [2020-10-14 02:52:16,497 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 02:52:16,498 INFO L93 Difference]: Finished difference Result 99363 states and 130366 transitions. [2020-10-14 02:52:16,499 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 02:52:16,499 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 178 [2020-10-14 02:52:16,500 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 02:52:16,703 INFO L225 Difference]: With dead ends: 99363 [2020-10-14 02:52:16,704 INFO L226 Difference]: Without dead ends: 59085 [2020-10-14 02:52:16,806 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-14 02:52:16,861 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59085 states. [2020-10-14 02:52:19,250 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59085 to 58302. [2020-10-14 02:52:19,251 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 58302 states. [2020-10-14 02:52:19,370 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58302 states to 58302 states and 75732 transitions. [2020-10-14 02:52:19,371 INFO L78 Accepts]: Start accepts. Automaton has 58302 states and 75732 transitions. Word has length 178 [2020-10-14 02:52:19,372 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 02:52:19,372 INFO L479 AbstractCegarLoop]: Abstraction has 58302 states and 75732 transitions. [2020-10-14 02:52:19,372 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 02:52:19,372 INFO L276 IsEmpty]: Start isEmpty. Operand 58302 states and 75732 transitions. [2020-10-14 02:52:19,387 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 218 [2020-10-14 02:52:19,388 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 02:52:19,388 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-14 02:52:19,388 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-14 02:52:19,389 INFO L427 AbstractCegarLoop]: === Iteration 8 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 02:52:19,389 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 02:52:19,389 INFO L82 PathProgramCache]: Analyzing trace with hash -916939374, now seen corresponding path program 1 times [2020-10-14 02:52:19,389 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 02:52:19,390 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [872024139] [2020-10-14 02:52:19,390 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 02:52:19,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:52:19,460 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:52:19,520 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:52:19,781 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:52:20,512 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:52:21,245 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:52:23,344 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:52:23,345 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 229 [2020-10-14 02:52:23,345 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-14 02:52:23,345 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3912 [2020-10-14 02:52:23,345 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:52:23,346 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:52:23,346 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 02:52:23,346 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 128 [2020-10-14 02:52:23,346 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 72 [2020-10-14 02:52:23,346 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 02:52:23,426 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 02:52:23,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:52:23,429 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:52:23,439 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:52:23,439 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 02:52:23,439 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 02:52:23,439 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-14 02:52:23,440 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:52:23,440 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:52:23,440 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 02:52:23,440 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 02:52:23,440 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 02:52:23,441 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 02:52:23,466 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 02:52:23,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:52:23,499 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:52:23,570 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:52:23,570 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 119 [2020-10-14 02:52:23,571 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 02:52:23,571 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 84 [2020-10-14 02:52:23,571 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:52:23,571 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:52:23,571 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 02:52:23,572 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 02:52:23,572 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 113 [2020-10-14 02:52:23,572 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 02:52:23,605 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2020-10-14 02:52:23,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:52:23,625 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:52:23,692 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:52:23,693 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 70 [2020-10-14 02:52:23,693 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 02:52:23,693 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 74 [2020-10-14 02:52:23,693 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:52:23,694 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:52:23,694 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 02:52:23,694 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 02:52:23,694 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 70 [2020-10-14 02:52:23,694 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 02:52:23,812 INFO L134 CoverageAnalysis]: Checked inductivity of 115 backedges. 112 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-14 02:52:23,813 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [872024139] [2020-10-14 02:52:23,813 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 02:52:23,813 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 02:52:23,814 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [206000993] [2020-10-14 02:52:23,814 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 02:52:23,815 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 02:52:23,815 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 02:52:23,815 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 02:52:23,816 INFO L87 Difference]: Start difference. First operand 58302 states and 75732 transitions. Second operand 7 states. [2020-10-14 02:52:48,416 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 02:52:48,416 INFO L93 Difference]: Finished difference Result 157173 states and 213782 transitions. [2020-10-14 02:52:48,418 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-14 02:52:48,419 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 217 [2020-10-14 02:52:48,419 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 02:52:48,817 INFO L225 Difference]: With dead ends: 157173 [2020-10-14 02:52:48,817 INFO L226 Difference]: Without dead ends: 98881 [2020-10-14 02:52:49,332 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-14 02:52:49,428 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 98881 states. [2020-10-14 02:52:50,891 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 98881 to 98597. [2020-10-14 02:52:50,891 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 98597 states. [2020-10-14 02:52:51,142 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 98597 states to 98597 states and 126919 transitions. [2020-10-14 02:52:51,143 INFO L78 Accepts]: Start accepts. Automaton has 98597 states and 126919 transitions. Word has length 217 [2020-10-14 02:52:51,144 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 02:52:51,144 INFO L479 AbstractCegarLoop]: Abstraction has 98597 states and 126919 transitions. [2020-10-14 02:52:51,144 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 02:52:51,144 INFO L276 IsEmpty]: Start isEmpty. Operand 98597 states and 126919 transitions. [2020-10-14 02:52:51,153 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 221 [2020-10-14 02:52:51,153 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 02:52:51,154 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 02:52:51,154 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-14 02:52:51,154 INFO L427 AbstractCegarLoop]: === Iteration 9 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 02:52:51,154 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 02:52:51,155 INFO L82 PathProgramCache]: Analyzing trace with hash -1094066884, now seen corresponding path program 1 times [2020-10-14 02:52:51,155 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 02:52:51,155 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [377205154] [2020-10-14 02:52:51,156 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 02:52:51,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:52:51,237 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:52:51,457 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:52:51,624 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:52:52,956 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:52:52,957 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 230 [2020-10-14 02:52:52,957 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 02:52:52,957 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1750 [2020-10-14 02:52:52,958 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:52:52,958 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:52:52,958 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 02:52:52,958 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 200 [2020-10-14 02:52:52,959 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 29 [2020-10-14 02:52:52,959 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 02:52:53,063 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 02:52:53,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:52:53,066 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:52:53,068 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:52:53,068 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 02:52:53,068 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 02:52:53,068 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 02:52:53,068 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:52:53,069 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:52:53,069 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 02:52:53,069 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 02:52:53,069 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 02:52:53,069 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 02:52:53,103 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 02:52:53,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:52:53,174 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:52:53,299 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:52:53,299 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 191 [2020-10-14 02:52:53,299 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 02:52:53,300 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 151 [2020-10-14 02:52:53,300 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:52:53,300 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:52:53,300 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 02:52:53,300 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 02:52:53,300 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 185 [2020-10-14 02:52:53,301 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 02:52:53,413 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 22 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 02:52:53,414 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [377205154] [2020-10-14 02:52:53,414 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 02:52:53,414 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-14 02:52:53,414 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [555547139] [2020-10-14 02:52:53,415 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 02:52:53,415 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 02:52:53,415 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 02:52:53,416 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-14 02:52:53,416 INFO L87 Difference]: Start difference. First operand 98597 states and 126919 transitions. Second operand 5 states. [2020-10-14 02:53:06,728 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 02:53:06,728 INFO L93 Difference]: Finished difference Result 194883 states and 251286 transitions. [2020-10-14 02:53:06,730 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 02:53:06,730 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 220 [2020-10-14 02:53:06,730 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 02:53:07,044 INFO L225 Difference]: With dead ends: 194883 [2020-10-14 02:53:07,044 INFO L226 Difference]: Without dead ends: 96296 [2020-10-14 02:53:07,222 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-14 02:53:07,328 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 96296 states. [2020-10-14 02:53:10,936 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 96296 to 96278. [2020-10-14 02:53:10,936 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 96278 states. [2020-10-14 02:53:11,096 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 96278 states to 96278 states and 119479 transitions. [2020-10-14 02:53:11,097 INFO L78 Accepts]: Start accepts. Automaton has 96278 states and 119479 transitions. Word has length 220 [2020-10-14 02:53:11,098 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 02:53:11,098 INFO L479 AbstractCegarLoop]: Abstraction has 96278 states and 119479 transitions. [2020-10-14 02:53:11,098 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 02:53:11,098 INFO L276 IsEmpty]: Start isEmpty. Operand 96278 states and 119479 transitions. [2020-10-14 02:53:11,107 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 226 [2020-10-14 02:53:11,107 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 02:53:11,108 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-14 02:53:11,108 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-14 02:53:11,108 INFO L427 AbstractCegarLoop]: === Iteration 10 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 02:53:11,108 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 02:53:11,108 INFO L82 PathProgramCache]: Analyzing trace with hash -847079728, now seen corresponding path program 1 times [2020-10-14 02:53:11,109 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 02:53:11,109 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [801697970] [2020-10-14 02:53:11,109 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 02:53:11,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:53:11,175 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:53:11,241 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:53:11,392 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:53:12,329 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:53:14,609 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:53:15,614 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:53:15,614 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 237 [2020-10-14 02:53:15,614 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-14 02:53:15,615 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4464 [2020-10-14 02:53:15,615 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:53:15,615 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:53:15,616 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 02:53:15,616 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 131 [2020-10-14 02:53:15,616 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 77 [2020-10-14 02:53:15,617 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 02:53:15,730 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 02:53:15,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:53:15,734 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:53:15,736 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:53:15,737 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 02:53:15,737 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 02:53:15,737 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 02:53:15,738 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:53:15,738 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:53:15,738 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 02:53:15,739 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 02:53:15,739 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 02:53:15,739 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 02:53:15,776 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 02:53:15,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:53:15,824 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:53:15,930 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:53:15,930 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 122 [2020-10-14 02:53:15,931 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 02:53:15,931 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 123 [2020-10-14 02:53:15,931 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:53:15,932 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:53:15,932 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 02:53:15,932 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 02:53:15,933 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 116 [2020-10-14 02:53:15,933 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 02:53:15,997 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2020-10-14 02:53:16,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:53:16,026 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:53:16,137 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:53:16,137 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 75 [2020-10-14 02:53:16,137 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 02:53:16,138 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 121 [2020-10-14 02:53:16,138 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:53:16,138 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:53:16,139 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 02:53:16,139 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 02:53:16,139 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 75 [2020-10-14 02:53:16,140 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 02:53:16,320 INFO L134 CoverageAnalysis]: Checked inductivity of 120 backedges. 117 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-14 02:53:16,321 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [801697970] [2020-10-14 02:53:16,321 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 02:53:16,322 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 02:53:16,322 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1322746021] [2020-10-14 02:53:16,323 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 02:53:16,324 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 02:53:16,324 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 02:53:16,324 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 02:53:16,324 INFO L87 Difference]: Start difference. First operand 96278 states and 119479 transitions. Second operand 7 states. [2020-10-14 02:53:34,106 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 02:53:34,106 INFO L93 Difference]: Finished difference Result 231625 states and 300689 transitions. [2020-10-14 02:53:34,108 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-14 02:53:34,108 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 225 [2020-10-14 02:53:34,109 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 02:53:34,522 INFO L225 Difference]: With dead ends: 231625 [2020-10-14 02:53:34,522 INFO L226 Difference]: Without dead ends: 123396 [2020-10-14 02:53:34,646 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-14 02:53:34,754 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 123396 states. [2020-10-14 02:53:36,561 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 123396 to 122375. [2020-10-14 02:53:36,561 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 122375 states. [2020-10-14 02:53:36,726 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 122375 states to 122375 states and 146232 transitions. [2020-10-14 02:53:36,727 INFO L78 Accepts]: Start accepts. Automaton has 122375 states and 146232 transitions. Word has length 225 [2020-10-14 02:53:36,728 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 02:53:36,728 INFO L479 AbstractCegarLoop]: Abstraction has 122375 states and 146232 transitions. [2020-10-14 02:53:36,728 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 02:53:36,728 INFO L276 IsEmpty]: Start isEmpty. Operand 122375 states and 146232 transitions. [2020-10-14 02:53:36,734 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 229 [2020-10-14 02:53:36,734 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 02:53:36,734 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 02:53:36,734 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-14 02:53:36,735 INFO L427 AbstractCegarLoop]: === Iteration 11 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 02:53:36,735 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 02:53:36,735 INFO L82 PathProgramCache]: Analyzing trace with hash -426319956, now seen corresponding path program 1 times [2020-10-14 02:53:36,735 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 02:53:36,735 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [724732564] [2020-10-14 02:53:36,736 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 02:53:36,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:53:36,817 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:53:37,098 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:53:37,779 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:53:37,780 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 238 [2020-10-14 02:53:37,780 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 02:53:37,780 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 993 [2020-10-14 02:53:37,780 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:53:37,781 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:53:37,781 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 02:53:37,781 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 208 [2020-10-14 02:53:37,781 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 29 [2020-10-14 02:53:37,781 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 02:53:37,881 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 02:53:37,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:53:37,883 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:53:37,885 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:53:37,885 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 02:53:37,885 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 02:53:37,885 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 02:53:37,886 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:53:37,886 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:53:37,886 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 02:53:37,886 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 02:53:37,886 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 02:53:37,887 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 02:53:37,917 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 02:53:37,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:53:38,001 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:53:38,168 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:53:38,168 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 199 [2020-10-14 02:53:38,168 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 02:53:38,168 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 200 [2020-10-14 02:53:38,169 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:53:38,169 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:53:38,169 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 02:53:38,169 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 02:53:38,169 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 193 [2020-10-14 02:53:38,169 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 02:53:38,268 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 22 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 02:53:38,269 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [724732564] [2020-10-14 02:53:38,269 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 02:53:38,269 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-14 02:53:38,270 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1604449092] [2020-10-14 02:53:38,271 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 02:53:38,271 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 02:53:38,271 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 02:53:38,272 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-14 02:53:38,272 INFO L87 Difference]: Start difference. First operand 122375 states and 146232 transitions. Second operand 5 states. [2020-10-14 02:53:52,692 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 02:53:52,693 INFO L93 Difference]: Finished difference Result 247057 states and 295386 transitions. [2020-10-14 02:53:52,695 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 02:53:52,695 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 228 [2020-10-14 02:53:52,695 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 02:53:52,956 INFO L225 Difference]: With dead ends: 247057 [2020-10-14 02:53:52,957 INFO L226 Difference]: Without dead ends: 124692 [2020-10-14 02:53:53,095 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-14 02:53:53,200 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 124692 states. [2020-10-14 02:53:57,504 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 124692 to 124688. [2020-10-14 02:53:57,504 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 124688 states. [2020-10-14 02:53:57,668 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 124688 states to 124688 states and 142069 transitions. [2020-10-14 02:53:57,669 INFO L78 Accepts]: Start accepts. Automaton has 124688 states and 142069 transitions. Word has length 228 [2020-10-14 02:53:57,670 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 02:53:57,670 INFO L479 AbstractCegarLoop]: Abstraction has 124688 states and 142069 transitions. [2020-10-14 02:53:57,670 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 02:53:57,670 INFO L276 IsEmpty]: Start isEmpty. Operand 124688 states and 142069 transitions. [2020-10-14 02:53:57,677 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 283 [2020-10-14 02:53:57,678 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 02:53:57,678 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 02:53:57,678 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-14 02:53:57,679 INFO L427 AbstractCegarLoop]: === Iteration 12 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 02:53:57,679 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 02:53:57,679 INFO L82 PathProgramCache]: Analyzing trace with hash 1327846432, now seen corresponding path program 1 times [2020-10-14 02:53:57,679 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 02:53:57,680 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2108781231] [2020-10-14 02:53:57,680 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 02:53:57,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:53:57,774 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:53:58,001 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:53:58,458 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:53:58,458 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 292 [2020-10-14 02:53:58,458 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 02:53:58,458 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 719 [2020-10-14 02:53:58,459 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:53:58,459 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:53:58,459 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 02:53:58,459 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 262 [2020-10-14 02:53:58,459 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 29 [2020-10-14 02:53:58,459 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 02:53:58,549 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 02:53:58,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:53:58,552 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:53:58,553 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:53:58,553 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 02:53:58,553 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 02:53:58,554 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 02:53:58,554 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:53:58,554 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:53:58,554 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 02:53:58,554 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 02:53:58,555 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 02:53:58,555 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 02:53:58,587 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 02:53:58,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:53:58,669 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:53:58,823 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:53:58,824 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 253 [2020-10-14 02:53:58,824 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 02:53:58,824 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 187 [2020-10-14 02:53:58,824 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:53:58,824 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:53:58,825 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 02:53:58,825 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 02:53:58,825 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 247 [2020-10-14 02:53:58,825 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 02:53:58,956 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 22 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 02:53:58,956 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2108781231] [2020-10-14 02:53:58,957 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 02:53:58,957 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-14 02:53:58,957 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [920602286] [2020-10-14 02:53:58,958 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 02:53:58,958 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 02:53:58,958 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 02:53:58,958 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-14 02:53:58,958 INFO L87 Difference]: Start difference. First operand 124688 states and 142069 transitions. Second operand 5 states.