/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 SingleStatement --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=0.2 --traceabstraction.additional.smt.options log-additional-information=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem01_label50.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-25 04:25:47,610 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 04:25:47,613 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 04:25:47,654 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 04:25:47,655 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 04:25:47,665 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 04:25:47,667 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 04:25:47,669 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 04:25:47,672 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 04:25:47,673 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 04:25:47,675 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 04:25:47,677 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 04:25:47,677 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 04:25:47,681 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 04:25:47,684 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 04:25:47,685 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 04:25:47,687 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 04:25:47,689 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 04:25:47,691 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 04:25:47,698 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 04:25:47,700 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 04:25:47,702 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 04:25:47,704 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 04:25:47,705 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 04:25:47,709 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 04:25:47,709 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 04:25:47,710 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 04:25:47,713 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 04:25:47,713 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 04:25:47,715 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 04:25:47,715 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 04:25:47,716 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 04:25:47,717 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 04:25:47,720 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 04:25:47,721 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 04:25:47,721 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 04:25:47,722 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 04:25:47,722 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 04:25:47,722 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 04:25:47,723 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 04:25:47,725 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 04:25:47,726 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 [2020-09-25 04:25:47,766 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 04:25:47,767 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 04:25:47,768 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 04:25:47,768 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 04:25:47,768 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 04:25:47,769 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 04:25:47,769 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 04:25:47,769 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 04:25:47,769 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 04:25:47,770 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 04:25:47,770 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 04:25:47,770 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 04:25:47,770 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 04:25:47,770 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 04:25:47,771 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 04:25:47,771 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 04:25:47,771 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 04:25:47,771 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 04:25:47,772 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 04:25:47,772 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 04:25:47,772 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 04:25:47,772 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 04:25:47,772 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 04:25:47,773 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 04:25:47,773 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 04:25:47,773 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 04:25:47,773 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 04:25:47,773 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 04:25:47,774 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 04:25:47,774 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 -> SingleStatement 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=0.2;log-additional-information=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=0.2;log-additional-information=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=0.2;log-additional-information=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=0.2;log-additional-information=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=0.2;log-additional-information=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=0.2;log-additional-information=true; [2020-09-25 04:25:48,198 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 04:25:48,221 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 04:25:48,226 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 04:25:48,228 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 04:25:48,228 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 04:25:48,229 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem01_label50.c [2020-09-25 04:25:48,317 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/77a8fd552/334b61dbf2f9472496433585a0c4e93a/FLAG8240f1ba9 [2020-09-25 04:25:48,960 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 04:25:48,961 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem01_label50.c [2020-09-25 04:25:48,979 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/77a8fd552/334b61dbf2f9472496433585a0c4e93a/FLAG8240f1ba9 [2020-09-25 04:25:49,204 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/77a8fd552/334b61dbf2f9472496433585a0c4e93a [2020-09-25 04:25:49,218 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 04:25:49,224 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 04:25:49,226 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 04:25:49,226 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 04:25:49,231 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 04:25:49,232 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 04:25:49" (1/1) ... [2020-09-25 04:25:49,237 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1987833a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 04:25:49, skipping insertion in model container [2020-09-25 04:25:49,237 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 04:25:49" (1/1) ... [2020-09-25 04:25:49,249 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 04:25:49,316 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 04:25:49,803 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 04:25:49,812 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 04:25:50,031 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 04:25:50,051 INFO L208 MainTranslator]: Completed translation [2020-09-25 04:25:50,051 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 04:25:50 WrapperNode [2020-09-25 04:25:50,052 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 04:25:50,052 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 04:25:50,055 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 04:25:50,055 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 04:25:50,068 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 04:25:50" (1/1) ... [2020-09-25 04:25:50,069 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 04:25:50" (1/1) ... [2020-09-25 04:25:50,087 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 04:25:50" (1/1) ... [2020-09-25 04:25:50,087 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 04:25:50" (1/1) ... [2020-09-25 04:25:50,135 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 04:25:50" (1/1) ... [2020-09-25 04:25:50,161 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 04:25:50" (1/1) ... [2020-09-25 04:25:50,171 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 04:25:50" (1/1) ... [2020-09-25 04:25:50,180 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 04:25:50,181 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 04:25:50,181 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 04:25:50,181 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 04:25:50,182 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 04:25:50" (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 [2020-09-25 04:25:50,247 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 04:25:50,247 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 04:25:50,247 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-09-25 04:25:50,247 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 04:25:50,248 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-09-25 04:25:50,248 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 04:25:50,248 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-25 04:25:50,248 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-09-25 04:25:50,248 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 04:25:50,248 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 04:25:50,249 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 04:25:51,532 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 04:25:51,536 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-09-25 04:25:51,551 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 04:25:51 BoogieIcfgContainer [2020-09-25 04:25:51,551 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 04:25:51,554 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 04:25:51,554 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 04:25:51,559 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 04:25:51,559 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 04:25:49" (1/3) ... [2020-09-25 04:25:51,560 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2dcf8589 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 04:25:51, skipping insertion in model container [2020-09-25 04:25:51,561 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 04:25:50" (2/3) ... [2020-09-25 04:25:51,561 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2dcf8589 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 04:25:51, skipping insertion in model container [2020-09-25 04:25:51,562 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 04:25:51" (3/3) ... [2020-09-25 04:25:51,564 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem01_label50.c [2020-09-25 04:25:51,577 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 04:25:51,591 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-25 04:25:51,613 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-25 04:25:51,655 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 04:25:51,655 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 04:25:51,656 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 04:25:51,656 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 04:25:51,656 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 04:25:51,656 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 04:25:51,656 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 04:25:51,656 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 04:25:51,686 INFO L276 IsEmpty]: Start isEmpty. Operand 525 states. [2020-09-25 04:25:51,710 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2020-09-25 04:25:51,711 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 04:25:51,712 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 04:25:51,712 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 04:25:51,718 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 04:25:51,719 INFO L82 PathProgramCache]: Analyzing trace with hash 249673445, now seen corresponding path program 1 times [2020-09-25 04:25:51,729 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 04:25:51,729 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1469315484] [2020-09-25 04:25:51,729 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 04:25:52,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:25:52,088 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:25:52,387 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:25:53,203 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:25:54,294 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:25:54,776 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:25:54,829 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:25:55,931 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:25:57,026 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:25:57,027 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 116 [2020-09-25 04:25:57,027 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-09-25 04:25:57,027 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5007 [2020-09-25 04:25:57,031 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:25:57,031 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:25:57,031 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 04:25:57,031 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 18 [2020-09-25 04:25:57,032 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 97 [2020-09-25 04:25:57,032 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-09-25 04:25:57,222 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 04:25:57,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:25:57,235 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:25:57,259 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:25:57,259 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-25 04:25:57,259 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:25:57,259 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 28 [2020-09-25 04:25:57,260 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:25:57,260 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:25:57,260 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 04:25:57,261 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:25:57,261 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-09-25 04:25:57,261 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:25:57,308 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 04:25:57,309 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1469315484] [2020-09-25 04:25:57,311 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 04:25:57,311 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-25 04:25:57,313 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [519806520] [2020-09-25 04:25:57,319 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-25 04:25:57,320 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 04:25:57,337 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-25 04:25:57,339 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-25 04:25:57,341 INFO L87 Difference]: Start difference. First operand 525 states. Second operand 4 states. [2020-09-25 04:25:59,330 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 04:25:59,331 INFO L93 Difference]: Finished difference Result 1268 states and 1667 transitions. [2020-09-25 04:25:59,331 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-25 04:25:59,333 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 107 [2020-09-25 04:25:59,334 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 04:25:59,357 INFO L225 Difference]: With dead ends: 1268 [2020-09-25 04:25:59,357 INFO L226 Difference]: Without dead ends: 694 [2020-09-25 04:25:59,366 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-09-25 04:25:59,389 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 694 states. [2020-09-25 04:25:59,454 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 694 to 603. [2020-09-25 04:25:59,456 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 603 states. [2020-09-25 04:25:59,460 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 603 states to 603 states and 719 transitions. [2020-09-25 04:25:59,462 INFO L78 Accepts]: Start accepts. Automaton has 603 states and 719 transitions. Word has length 107 [2020-09-25 04:25:59,463 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 04:25:59,463 INFO L479 AbstractCegarLoop]: Abstraction has 603 states and 719 transitions. [2020-09-25 04:25:59,463 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-25 04:25:59,463 INFO L276 IsEmpty]: Start isEmpty. Operand 603 states and 719 transitions. [2020-09-25 04:25:59,472 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2020-09-25 04:25:59,472 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 04:25:59,473 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 04:25:59,473 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 04:25:59,473 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 04:25:59,474 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 04:25:59,474 INFO L82 PathProgramCache]: Analyzing trace with hash -72243779, now seen corresponding path program 1 times [2020-09-25 04:25:59,474 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 04:25:59,474 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [368435609] [2020-09-25 04:25:59,475 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 04:25:59,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:25:59,518 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:25:59,587 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:25:59,878 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:26:01,502 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:26:02,370 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:26:03,304 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:26:04,511 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:26:04,512 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 139 [2020-09-25 04:26:04,513 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-09-25 04:26:04,513 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5010 [2020-09-25 04:26:04,513 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:26:04,514 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:26:04,515 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 04:26:04,515 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 20 [2020-09-25 04:26:04,515 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 27 [2020-09-25 04:26:04,516 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 04:26:04,629 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 04:26:04,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:26:04,643 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:26:04,664 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:26:04,665 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-25 04:26:04,665 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:26:04,666 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 27 [2020-09-25 04:26:04,666 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:26:04,667 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:26:04,667 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 04:26:04,667 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:26:04,667 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-09-25 04:26:04,667 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:26:04,704 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-09-25 04:26:04,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:26:04,713 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:26:04,751 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:26:04,752 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-09-25 04:26:04,752 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:26:04,752 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 41 [2020-09-25 04:26:04,752 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:26:04,752 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:26:04,753 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 04:26:04,753 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 04:26:04,753 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-09-25 04:26:04,753 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:26:04,791 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 04:26:04,792 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [368435609] [2020-09-25 04:26:04,792 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 04:26:04,793 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-09-25 04:26:04,793 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [393489945] [2020-09-25 04:26:04,797 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-25 04:26:04,797 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 04:26:04,797 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-25 04:26:04,797 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-09-25 04:26:04,798 INFO L87 Difference]: Start difference. First operand 603 states and 719 transitions. Second operand 7 states. [2020-09-25 04:26:06,956 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 04:26:06,956 INFO L93 Difference]: Finished difference Result 1591 states and 1980 transitions. [2020-09-25 04:26:06,960 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-09-25 04:26:06,961 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 128 [2020-09-25 04:26:06,961 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 04:26:06,968 INFO L225 Difference]: With dead ends: 1591 [2020-09-25 04:26:06,968 INFO L226 Difference]: Without dead ends: 1012 [2020-09-25 04:26:06,971 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-09-25 04:26:06,972 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1012 states. [2020-09-25 04:26:07,018 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1012 to 966. [2020-09-25 04:26:07,019 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 966 states. [2020-09-25 04:26:07,024 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 966 states to 966 states and 1175 transitions. [2020-09-25 04:26:07,025 INFO L78 Accepts]: Start accepts. Automaton has 966 states and 1175 transitions. Word has length 128 [2020-09-25 04:26:07,025 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 04:26:07,025 INFO L479 AbstractCegarLoop]: Abstraction has 966 states and 1175 transitions. [2020-09-25 04:26:07,026 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-25 04:26:07,026 INFO L276 IsEmpty]: Start isEmpty. Operand 966 states and 1175 transitions. [2020-09-25 04:26:07,032 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 130 [2020-09-25 04:26:07,033 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 04:26:07,033 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-09-25 04:26:07,033 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-25 04:26:07,033 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 04:26:07,034 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 04:26:07,034 INFO L82 PathProgramCache]: Analyzing trace with hash -1990961385, now seen corresponding path program 1 times [2020-09-25 04:26:07,034 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 04:26:07,034 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [237597437] [2020-09-25 04:26:07,035 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 04:26:07,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:26:07,069 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:26:07,157 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:26:07,223 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:26:07,295 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:26:09,145 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:26:09,221 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:26:09,260 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:26:10,435 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:26:10,729 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:26:11,221 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:26:11,360 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:26:11,841 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:26:12,068 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:26:12,069 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 140 [2020-09-25 04:26:12,069 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 12 [2020-09-25 04:26:12,069 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5014 [2020-09-25 04:26:12,069 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:26:12,069 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:26:12,069 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 04:26:12,070 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 43 [2020-09-25 04:26:12,070 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 96 [2020-09-25 04:26:12,070 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 04:26:12,183 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 04:26:12,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:26:12,190 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:26:12,202 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:26:12,202 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-25 04:26:12,202 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:26:12,203 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-09-25 04:26:12,203 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:26:12,203 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:26:12,204 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 04:26:12,204 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:26:12,204 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 04:26:12,204 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:26:12,231 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-09-25 04:26:12,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:26:12,238 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:26:12,254 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:26:12,255 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 04:26:12,255 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:26:12,255 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-09-25 04:26:12,255 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:26:12,256 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:26:12,256 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 04:26:12,256 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:26:12,256 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-09-25 04:26:12,256 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:26:12,326 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 9 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 04:26:12,326 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [237597437] [2020-09-25 04:26:12,327 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 04:26:12,327 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-09-25 04:26:12,328 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [826119734] [2020-09-25 04:26:12,329 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 04:26:12,330 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 04:26:12,330 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 04:26:12,330 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-25 04:26:12,330 INFO L87 Difference]: Start difference. First operand 966 states and 1175 transitions. Second operand 5 states. [2020-09-25 04:26:14,276 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 04:26:14,276 INFO L93 Difference]: Finished difference Result 1933 states and 2360 transitions. [2020-09-25 04:26:14,277 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 04:26:14,277 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 129 [2020-09-25 04:26:14,278 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 04:26:14,283 INFO L225 Difference]: With dead ends: 1933 [2020-09-25 04:26:14,283 INFO L226 Difference]: Without dead ends: 991 [2020-09-25 04:26:14,287 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 [2020-09-25 04:26:14,289 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 991 states. [2020-09-25 04:26:14,313 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 991 to 966. [2020-09-25 04:26:14,313 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 966 states. [2020-09-25 04:26:14,320 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 966 states to 966 states and 1128 transitions. [2020-09-25 04:26:14,320 INFO L78 Accepts]: Start accepts. Automaton has 966 states and 1128 transitions. Word has length 129 [2020-09-25 04:26:14,321 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 04:26:14,321 INFO L479 AbstractCegarLoop]: Abstraction has 966 states and 1128 transitions. [2020-09-25 04:26:14,321 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 04:26:14,321 INFO L276 IsEmpty]: Start isEmpty. Operand 966 states and 1128 transitions. [2020-09-25 04:26:14,325 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 137 [2020-09-25 04:26:14,325 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 04:26:14,326 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-09-25 04:26:14,326 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-25 04:26:14,326 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 04:26:14,326 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 04:26:14,327 INFO L82 PathProgramCache]: Analyzing trace with hash -532868870, now seen corresponding path program 1 times [2020-09-25 04:26:14,327 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 04:26:14,327 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [162163483] [2020-09-25 04:26:14,327 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 04:26:14,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:26:14,395 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:26:14,464 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:26:14,684 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:26:15,046 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:26:15,186 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:26:16,313 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:26:16,815 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:26:17,372 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:26:17,993 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:26:19,370 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:26:19,370 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 147 [2020-09-25 04:26:19,370 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-09-25 04:26:19,370 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5007 [2020-09-25 04:26:19,371 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:26:19,371 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:26:19,371 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 04:26:19,371 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 52 [2020-09-25 04:26:19,372 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 94 [2020-09-25 04:26:19,372 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:26:19,465 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 04:26:19,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:26:19,470 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:26:19,481 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:26:19,481 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-25 04:26:19,481 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:26:19,481 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-09-25 04:26:19,482 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:26:19,482 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:26:19,482 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 04:26:19,482 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:26:19,482 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 04:26:19,483 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:26:19,502 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-09-25 04:26:19,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:26:19,513 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:26:19,540 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:26:19,541 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 04:26:19,541 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:26:19,541 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 31 [2020-09-25 04:26:19,541 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:26:19,541 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:26:19,542 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 04:26:19,542 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:26:19,542 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-09-25 04:26:19,542 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 04:26:19,573 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 19 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 04:26:19,575 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [162163483] [2020-09-25 04:26:19,575 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 04:26:19,575 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-09-25 04:26:19,576 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [208198468] [2020-09-25 04:26:19,577 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 04:26:19,577 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 04:26:19,577 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 04:26:19,578 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-25 04:26:19,578 INFO L87 Difference]: Start difference. First operand 966 states and 1128 transitions. Second operand 5 states. [2020-09-25 04:26:21,455 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 04:26:21,456 INFO L93 Difference]: Finished difference Result 2525 states and 3056 transitions. [2020-09-25 04:26:21,457 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 04:26:21,458 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 136 [2020-09-25 04:26:21,458 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 04:26:21,468 INFO L225 Difference]: With dead ends: 2525 [2020-09-25 04:26:21,468 INFO L226 Difference]: Without dead ends: 1583 [2020-09-25 04:26:21,472 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 [2020-09-25 04:26:21,474 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1583 states. [2020-09-25 04:26:21,519 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1583 to 1540. [2020-09-25 04:26:21,519 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1540 states. [2020-09-25 04:26:21,530 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1540 states to 1540 states and 1844 transitions. [2020-09-25 04:26:21,530 INFO L78 Accepts]: Start accepts. Automaton has 1540 states and 1844 transitions. Word has length 136 [2020-09-25 04:26:21,532 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 04:26:21,532 INFO L479 AbstractCegarLoop]: Abstraction has 1540 states and 1844 transitions. [2020-09-25 04:26:21,532 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 04:26:21,532 INFO L276 IsEmpty]: Start isEmpty. Operand 1540 states and 1844 transitions. [2020-09-25 04:26:21,537 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 138 [2020-09-25 04:26:21,538 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 04:26:21,538 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-09-25 04:26:21,538 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-25 04:26:21,538 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 04:26:21,539 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 04:26:21,539 INFO L82 PathProgramCache]: Analyzing trace with hash -645015236, now seen corresponding path program 1 times [2020-09-25 04:26:21,539 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 04:26:21,539 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [836558457] [2020-09-25 04:26:21,540 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 04:26:21,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:26:21,599 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:26:21,703 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:26:21,881 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:26:21,923 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:26:21,994 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:26:22,112 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:26:22,193 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:26:23,140 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:26:23,141 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 148 [2020-09-25 04:26:23,141 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-09-25 04:26:23,141 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1569 [2020-09-25 04:26:23,141 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:26:23,142 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:26:23,142 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-25 04:26:23,142 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 18 [2020-09-25 04:26:23,142 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 33 [2020-09-25 04:26:23,142 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:26:23,218 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 04:26:23,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:26:23,228 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:26:23,263 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:26:23,264 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-25 04:26:23,266 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:26:23,266 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 40 [2020-09-25 04:26:23,266 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:26:23,267 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:26:23,267 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 04:26:23,267 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:26:23,268 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-09-25 04:26:23,268 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:26:23,312 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-09-25 04:26:23,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:26:23,326 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:26:23,388 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:26:23,389 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 26 [2020-09-25 04:26:23,389 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:26:23,389 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 68 [2020-09-25 04:26:23,390 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:26:23,390 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:26:23,390 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 04:26:23,391 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 04:26:23,391 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 25 [2020-09-25 04:26:23,392 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:26:23,599 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 04:26:23,599 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [836558457] [2020-09-25 04:26:23,600 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 04:26:23,600 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-09-25 04:26:23,600 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [187206078] [2020-09-25 04:26:23,601 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-25 04:26:23,601 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 04:26:23,601 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-25 04:26:23,601 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-09-25 04:26:23,602 INFO L87 Difference]: Start difference. First operand 1540 states and 1844 transitions. Second operand 8 states. [2020-09-25 04:26:26,852 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 04:26:26,852 INFO L93 Difference]: Finished difference Result 3218 states and 3858 transitions. [2020-09-25 04:26:26,853 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-09-25 04:26:26,853 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 137 [2020-09-25 04:26:26,853 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 04:26:26,864 INFO L225 Difference]: With dead ends: 3218 [2020-09-25 04:26:26,864 INFO L226 Difference]: Without dead ends: 1843 [2020-09-25 04:26:26,870 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 49 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=98, Invalid=244, Unknown=0, NotChecked=0, Total=342 [2020-09-25 04:26:26,873 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1843 states. [2020-09-25 04:26:26,932 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1843 to 1725. [2020-09-25 04:26:26,932 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1725 states. [2020-09-25 04:26:26,940 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1725 states to 1725 states and 2057 transitions. [2020-09-25 04:26:26,941 INFO L78 Accepts]: Start accepts. Automaton has 1725 states and 2057 transitions. Word has length 137 [2020-09-25 04:26:26,941 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 04:26:26,941 INFO L479 AbstractCegarLoop]: Abstraction has 1725 states and 2057 transitions. [2020-09-25 04:26:26,941 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-09-25 04:26:26,941 INFO L276 IsEmpty]: Start isEmpty. Operand 1725 states and 2057 transitions. [2020-09-25 04:26:26,947 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 159 [2020-09-25 04:26:26,947 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 04:26:26,948 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2020-09-25 04:26:26,948 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-25 04:26:26,948 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 04:26:26,948 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 04:26:26,949 INFO L82 PathProgramCache]: Analyzing trace with hash 281598029, now seen corresponding path program 1 times [2020-09-25 04:26:26,949 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 04:26:26,949 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [295419217] [2020-09-25 04:26:26,949 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 04:26:26,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:26:27,017 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:26:27,117 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:26:27,390 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:26:27,482 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:26:27,540 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:26:27,583 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:26:31,942 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:26:31,942 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 171 [2020-09-25 04:26:31,943 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-09-25 04:26:31,943 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4954 [2020-09-25 04:26:31,943 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:26:31,943 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:26:31,943 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 04:26:31,944 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 44 [2020-09-25 04:26:31,944 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-09-25 04:26:31,944 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:26:32,013 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 04:26:32,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:26:32,018 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:26:32,027 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:26:32,028 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-25 04:26:32,028 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:26:32,028 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-09-25 04:26:32,028 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:26:32,029 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:26:32,029 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 04:26:32,029 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:26:32,029 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 04:26:32,029 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:26:32,054 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-09-25 04:26:32,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:26:32,060 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:26:32,079 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:26:32,079 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-09-25 04:26:32,079 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:26:32,080 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-09-25 04:26:32,080 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:26:32,080 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:26:32,080 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 04:26:32,080 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:26:32,080 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 04:26:32,081 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 04:26:32,088 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2020-09-25 04:26:32,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:26:32,101 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:26:32,158 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:26:32,159 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 26 [2020-09-25 04:26:32,159 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:26:32,159 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 62 [2020-09-25 04:26:32,159 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:26:32,159 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:26:32,160 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 04:26:32,160 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 04:26:32,160 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 25 [2020-09-25 04:26:32,161 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:26:32,297 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 44 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-09-25 04:26:32,297 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [295419217] [2020-09-25 04:26:32,299 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 04:26:32,299 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-09-25 04:26:32,299 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [399030003] [2020-09-25 04:26:32,300 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-25 04:26:32,300 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 04:26:32,301 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-25 04:26:32,301 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-09-25 04:26:32,301 INFO L87 Difference]: Start difference. First operand 1725 states and 2057 transitions. Second operand 7 states. [2020-09-25 04:26:34,801 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 04:26:34,802 INFO L93 Difference]: Finished difference Result 3766 states and 4691 transitions. [2020-09-25 04:26:34,802 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-09-25 04:26:34,802 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 158 [2020-09-25 04:26:34,803 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 04:26:34,815 INFO L225 Difference]: With dead ends: 3766 [2020-09-25 04:26:34,816 INFO L226 Difference]: Without dead ends: 2206 [2020-09-25 04:26:34,821 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2020-09-25 04:26:34,823 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2206 states. [2020-09-25 04:26:34,877 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2206 to 2041. [2020-09-25 04:26:34,877 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2041 states. [2020-09-25 04:26:34,884 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2041 states to 2041 states and 2421 transitions. [2020-09-25 04:26:34,884 INFO L78 Accepts]: Start accepts. Automaton has 2041 states and 2421 transitions. Word has length 158 [2020-09-25 04:26:34,884 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 04:26:34,884 INFO L479 AbstractCegarLoop]: Abstraction has 2041 states and 2421 transitions. [2020-09-25 04:26:34,885 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-25 04:26:34,885 INFO L276 IsEmpty]: Start isEmpty. Operand 2041 states and 2421 transitions. [2020-09-25 04:26:34,891 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 167 [2020-09-25 04:26:34,891 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 04:26:34,892 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2020-09-25 04:26:34,892 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-09-25 04:26:34,892 INFO L427 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 04:26:34,892 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 04:26:34,893 INFO L82 PathProgramCache]: Analyzing trace with hash -1490542447, now seen corresponding path program 1 times [2020-09-25 04:26:34,893 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 04:26:34,893 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [941833105] [2020-09-25 04:26:34,893 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 04:26:34,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:26:34,950 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:26:35,011 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:26:35,178 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:26:36,057 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:26:36,127 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:26:36,189 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:26:36,232 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:26:36,272 FATAL L256 erpolLogProxyWrapper]: Now shrinking...