/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=0.4 --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/Problem02_label56.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-25 05:37:29,629 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 05:37:29,633 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 05:37:29,659 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 05:37:29,659 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 05:37:29,661 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 05:37:29,662 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 05:37:29,664 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 05:37:29,666 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 05:37:29,667 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 05:37:29,668 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 05:37:29,669 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 05:37:29,670 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 05:37:29,671 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 05:37:29,672 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 05:37:29,673 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 05:37:29,674 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 05:37:29,676 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 05:37:29,677 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 05:37:29,680 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 05:37:29,681 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 05:37:29,683 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 05:37:29,684 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 05:37:29,685 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 05:37:29,688 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 05:37:29,689 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 05:37:29,689 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 05:37:29,690 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 05:37:29,691 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 05:37:29,692 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 05:37:29,692 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 05:37:29,693 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 05:37:29,695 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 05:37:29,696 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 05:37:29,697 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 05:37:29,697 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 05:37:29,698 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 05:37:29,698 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 05:37:29,699 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 05:37:29,700 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 05:37:29,701 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 05:37:29,701 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 05:37:29,727 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 05:37:29,728 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 05:37:29,729 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 05:37:29,729 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 05:37:29,730 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 05:37:29,730 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 05:37:29,730 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 05:37:29,730 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 05:37:29,731 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 05:37:29,731 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 05:37:29,731 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 05:37:29,731 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 05:37:29,731 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 05:37:29,732 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 05:37:29,732 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 05:37:29,732 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 05:37:29,732 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 05:37:29,732 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 05:37:29,733 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 05:37:29,733 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 05:37:29,733 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 05:37:29,733 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 05:37:29,733 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 05:37:29,734 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 05:37:29,734 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 05:37:29,734 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 05:37:29,734 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 05:37:29,734 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 05:37:29,735 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 05:37:29,735 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=0.4;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=0.4;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=0.4;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=0.4;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=0.4;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=0.4;log-additional-information=true; [2020-09-25 05:37:30,181 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 05:37:30,203 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 05:37:30,215 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 05:37:30,217 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 05:37:30,218 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 05:37:30,219 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem02_label56.c [2020-09-25 05:37:30,293 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/a693ccf06/3997d93863f6447aa9d0f506295967f7/FLAGbddf597b2 [2020-09-25 05:37:30,960 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 05:37:30,961 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem02_label56.c [2020-09-25 05:37:30,975 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/a693ccf06/3997d93863f6447aa9d0f506295967f7/FLAGbddf597b2 [2020-09-25 05:37:31,169 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/a693ccf06/3997d93863f6447aa9d0f506295967f7 [2020-09-25 05:37:31,182 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 05:37:31,187 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 05:37:31,188 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 05:37:31,188 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 05:37:31,193 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 05:37:31,194 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 05:37:31" (1/1) ... [2020-09-25 05:37:31,199 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5783693b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 05:37:31, skipping insertion in model container [2020-09-25 05:37:31,199 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 05:37:31" (1/1) ... [2020-09-25 05:37:31,208 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 05:37:31,266 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 05:37:31,755 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 05:37:31,762 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 05:37:32,041 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 05:37:32,061 INFO L208 MainTranslator]: Completed translation [2020-09-25 05:37:32,061 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 05:37:32 WrapperNode [2020-09-25 05:37:32,062 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 05:37:32,062 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 05:37:32,063 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 05:37:32,063 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 05:37:32,077 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 05:37:32" (1/1) ... [2020-09-25 05:37:32,077 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 05:37:32" (1/1) ... [2020-09-25 05:37:32,101 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 05:37:32" (1/1) ... [2020-09-25 05:37:32,102 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 05:37:32" (1/1) ... [2020-09-25 05:37:32,141 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 05:37:32" (1/1) ... [2020-09-25 05:37:32,166 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 05:37:32" (1/1) ... [2020-09-25 05:37:32,176 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 05:37:32" (1/1) ... [2020-09-25 05:37:32,185 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 05:37:32,186 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 05:37:32,186 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 05:37:32,186 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 05:37:32,187 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 05:37:32" (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 05:37:32,270 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 05:37:32,270 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 05:37:32,270 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-09-25 05:37:32,270 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 05:37:32,270 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-09-25 05:37:32,271 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 05:37:32,271 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-25 05:37:32,272 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-09-25 05:37:32,272 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 05:37:32,272 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 05:37:32,272 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 05:37:33,644 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 05:37:33,644 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-09-25 05:37:33,655 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 05:37:33 BoogieIcfgContainer [2020-09-25 05:37:33,655 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 05:37:33,657 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 05:37:33,657 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 05:37:33,661 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 05:37:33,662 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 05:37:31" (1/3) ... [2020-09-25 05:37:33,663 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@786d3a14 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 05:37:33, skipping insertion in model container [2020-09-25 05:37:33,663 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 05:37:32" (2/3) ... [2020-09-25 05:37:33,664 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@786d3a14 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 05:37:33, skipping insertion in model container [2020-09-25 05:37:33,664 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 05:37:33" (3/3) ... [2020-09-25 05:37:33,667 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem02_label56.c [2020-09-25 05:37:33,680 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 05:37:33,692 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-25 05:37:33,717 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-25 05:37:33,754 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 05:37:33,754 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 05:37:33,755 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 05:37:33,755 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 05:37:33,755 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 05:37:33,755 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 05:37:33,755 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 05:37:33,755 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 05:37:33,790 INFO L276 IsEmpty]: Start isEmpty. Operand 527 states. [2020-09-25 05:37:33,816 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 150 [2020-09-25 05:37:33,817 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 05:37:33,818 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 05:37:33,819 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 05:37:33,827 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 05:37:33,828 INFO L82 PathProgramCache]: Analyzing trace with hash -934155158, now seen corresponding path program 1 times [2020-09-25 05:37:33,839 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 05:37:33,840 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2106040551] [2020-09-25 05:37:33,840 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 05:37:34,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:37:34,212 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:37:34,462 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:37:35,029 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:37:35,294 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:37:37,423 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:37:37,899 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:37:38,930 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:37:39,130 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:37:39,131 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 158 [2020-09-25 05:37:39,131 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-09-25 05:37:39,131 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-09-25 05:37:39,135 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:37:39,135 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:37:39,136 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 05:37:39,136 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-09-25 05:37:39,136 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 138 [2020-09-25 05:37:39,136 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-09-25 05:37:39,344 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 05:37:39,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:37:39,357 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:37:39,381 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:37:39,381 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 05:37:39,382 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:37:39,382 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 28 [2020-09-25 05:37:39,382 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:37:39,383 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:37:39,383 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 05:37:39,383 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:37:39,383 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-09-25 05:37:39,384 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:37:39,482 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 05:37:39,483 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2106040551] [2020-09-25 05:37:39,485 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 05:37:39,486 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-25 05:37:39,487 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [596723979] [2020-09-25 05:37:39,495 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-25 05:37:39,496 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 05:37:39,515 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-25 05:37:39,517 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-25 05:37:39,519 INFO L87 Difference]: Start difference. First operand 527 states. Second operand 4 states. [2020-09-25 05:37:41,904 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 05:37:41,904 INFO L93 Difference]: Finished difference Result 1247 states and 1695 transitions. [2020-09-25 05:37:41,905 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-25 05:37:41,907 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 149 [2020-09-25 05:37:41,909 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 05:37:41,935 INFO L225 Difference]: With dead ends: 1247 [2020-09-25 05:37:41,935 INFO L226 Difference]: Without dead ends: 669 [2020-09-25 05:37:41,944 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 05:37:41,967 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 669 states. [2020-09-25 05:37:42,039 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 669 to 621. [2020-09-25 05:37:42,041 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 621 states. [2020-09-25 05:37:42,045 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 621 states to 621 states and 723 transitions. [2020-09-25 05:37:42,047 INFO L78 Accepts]: Start accepts. Automaton has 621 states and 723 transitions. Word has length 149 [2020-09-25 05:37:42,048 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 05:37:42,048 INFO L479 AbstractCegarLoop]: Abstraction has 621 states and 723 transitions. [2020-09-25 05:37:42,048 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-25 05:37:42,049 INFO L276 IsEmpty]: Start isEmpty. Operand 621 states and 723 transitions. [2020-09-25 05:37:42,057 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 167 [2020-09-25 05:37:42,057 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 05:37:42,057 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 05:37:42,058 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 05:37:42,058 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 05:37:42,059 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 05:37:42,059 INFO L82 PathProgramCache]: Analyzing trace with hash 1111409233, now seen corresponding path program 1 times [2020-09-25 05:37:42,059 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 05:37:42,060 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1433855056] [2020-09-25 05:37:42,060 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 05:37:42,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:37:42,147 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:37:42,294 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:37:42,503 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:37:42,979 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:37:43,524 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:37:46,664 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:37:46,807 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:37:47,132 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:37:47,133 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 177 [2020-09-25 05:37:47,133 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-09-25 05:37:47,133 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5022 [2020-09-25 05:37:47,134 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:37:47,134 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:37:47,134 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 05:37:47,135 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 40 [2020-09-25 05:37:47,135 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 136 [2020-09-25 05:37:47,135 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:37:47,305 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 05:37:47,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:37:47,317 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:37:47,330 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:37:47,331 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 05:37:47,331 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:37:47,332 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-09-25 05:37:47,332 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:37:47,332 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:37:47,332 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 05:37:47,333 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:37:47,333 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 05:37:47,342 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 9 [2020-09-25 05:37:47,371 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-25 05:37:47,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:37:47,378 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:37:47,391 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:37:47,391 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-09-25 05:37:47,392 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:37:47,392 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-09-25 05:37:47,392 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:37:47,392 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:37:47,393 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 05:37:47,393 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:37:47,393 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-09-25 05:37:47,393 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:37:47,462 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 05:37:47,463 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1433855056] [2020-09-25 05:37:47,463 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 05:37:47,464 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-09-25 05:37:47,464 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [653000525] [2020-09-25 05:37:47,466 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 05:37:47,466 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 05:37:47,467 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 05:37:47,467 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-25 05:37:47,467 INFO L87 Difference]: Start difference. First operand 621 states and 723 transitions. Second operand 5 states. [2020-09-25 05:37:49,448 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 05:37:49,448 INFO L93 Difference]: Finished difference Result 1531 states and 1847 transitions. [2020-09-25 05:37:49,449 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 05:37:49,449 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 166 [2020-09-25 05:37:49,451 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 05:37:49,464 INFO L225 Difference]: With dead ends: 1531 [2020-09-25 05:37:49,464 INFO L226 Difference]: Without dead ends: 932 [2020-09-25 05:37:49,467 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 5 SyntacticMatches, 2 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 05:37:49,469 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 932 states. [2020-09-25 05:37:49,532 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 932 to 922. [2020-09-25 05:37:49,532 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 922 states. [2020-09-25 05:37:49,542 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 922 states to 922 states and 1103 transitions. [2020-09-25 05:37:49,543 INFO L78 Accepts]: Start accepts. Automaton has 922 states and 1103 transitions. Word has length 166 [2020-09-25 05:37:49,544 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 05:37:49,545 INFO L479 AbstractCegarLoop]: Abstraction has 922 states and 1103 transitions. [2020-09-25 05:37:49,545 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 05:37:49,545 INFO L276 IsEmpty]: Start isEmpty. Operand 922 states and 1103 transitions. [2020-09-25 05:37:49,551 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 185 [2020-09-25 05:37:49,552 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 05:37:49,552 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 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] [2020-09-25 05:37:49,553 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-25 05:37:49,553 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 05:37:49,553 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 05:37:49,553 INFO L82 PathProgramCache]: Analyzing trace with hash -375129923, now seen corresponding path program 1 times [2020-09-25 05:37:49,553 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 05:37:49,554 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1344191285] [2020-09-25 05:37:49,554 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 05:37:49,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:37:49,603 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:37:49,672 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:37:49,879 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:37:50,147 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:37:50,259 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:37:50,369 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:37:51,618 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:37:51,967 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:37:52,574 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:37:53,194 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:37:53,937 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:37:54,456 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:37:54,548 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:37:54,586 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:37:54,586 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 197 [2020-09-25 05:37:54,586 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 13 [2020-09-25 05:37:54,587 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5003 [2020-09-25 05:37:54,587 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:37:54,587 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:37:54,587 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 05:37:54,588 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 41 [2020-09-25 05:37:54,588 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-09-25 05:37:54,588 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:37:54,666 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 05:37:54,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:37:54,673 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:37:54,683 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:37:54,684 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 05:37:54,684 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:37:54,684 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-09-25 05:37:54,684 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:37:54,685 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:37:54,685 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 05:37:54,685 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:37:54,685 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 05:37:54,685 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 05:37:54,702 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-25 05:37:54,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:37:54,707 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:37:54,718 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:37:54,719 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-09-25 05:37:54,719 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:37:54,719 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-09-25 05:37:54,719 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:37:54,719 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:37:54,720 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 05:37:54,720 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:37:54,720 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-09-25 05:37:54,720 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:37:54,724 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2020-09-25 05:37:54,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:37:54,732 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:37:54,761 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:37:54,761 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-09-25 05:37:54,762 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:37:54,762 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 32 [2020-09-25 05:37:54,762 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:37:54,762 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:37:54,763 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 05:37:54,763 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 05:37:54,763 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-09-25 05:37:54,763 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:37:54,810 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 30 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-09-25 05:37:54,810 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1344191285] [2020-09-25 05:37:54,810 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 05:37:54,811 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-09-25 05:37:54,811 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1085225947] [2020-09-25 05:37:54,812 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-25 05:37:54,812 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 05:37:54,812 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-25 05:37:54,812 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-09-25 05:37:54,813 INFO L87 Difference]: Start difference. First operand 922 states and 1103 transitions. Second operand 7 states. [2020-09-25 05:37:57,358 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 05:37:57,359 INFO L93 Difference]: Finished difference Result 2178 states and 2719 transitions. [2020-09-25 05:37:57,360 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-09-25 05:37:57,360 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 184 [2020-09-25 05:37:57,360 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 05:37:57,369 INFO L225 Difference]: With dead ends: 2178 [2020-09-25 05:37:57,370 INFO L226 Difference]: Without dead ends: 1278 [2020-09-25 05:37:57,374 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 7 SyntacticMatches, 0 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 05:37:57,376 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1278 states. [2020-09-25 05:37:57,411 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1278 to 1247. [2020-09-25 05:37:57,411 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1247 states. [2020-09-25 05:37:57,417 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1247 states to 1247 states and 1478 transitions. [2020-09-25 05:37:57,418 INFO L78 Accepts]: Start accepts. Automaton has 1247 states and 1478 transitions. Word has length 184 [2020-09-25 05:37:57,418 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 05:37:57,418 INFO L479 AbstractCegarLoop]: Abstraction has 1247 states and 1478 transitions. [2020-09-25 05:37:57,418 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-25 05:37:57,419 INFO L276 IsEmpty]: Start isEmpty. Operand 1247 states and 1478 transitions. [2020-09-25 05:37:57,424 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 190 [2020-09-25 05:37:57,424 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 05:37:57,425 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 05:37:57,425 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-25 05:37:57,425 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 05:37:57,425 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 05:37:57,425 INFO L82 PathProgramCache]: Analyzing trace with hash 817645172, now seen corresponding path program 1 times [2020-09-25 05:37:57,426 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 05:37:57,426 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [908176766] [2020-09-25 05:37:57,426 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 05:37:57,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:37:57,465 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:37:57,523 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:37:57,654 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:37:57,934 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:38:00,282 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:38:01,206 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:38:01,327 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:38:02,469 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:38:02,469 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 202 [2020-09-25 05:38:02,470 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-09-25 05:38:02,470 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5021 [2020-09-25 05:38:02,470 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:38:02,470 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:38:02,470 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 05:38:02,471 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 45 [2020-09-25 05:38:02,471 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 19 [2020-09-25 05:38:02,471 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:38:02,559 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 05:38:02,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:38:02,564 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:38:02,574 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:38:02,575 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 05:38:02,575 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:38:02,575 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-09-25 05:38:02,576 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:38:02,576 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:38:02,576 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 05:38:02,576 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:38:02,576 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 05:38:02,577 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:38:02,594 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-25 05:38:02,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:38:02,601 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:38:02,613 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:38:02,614 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 05:38:02,614 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:38:02,614 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-09-25 05:38:02,614 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:38:02,615 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:38:02,615 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 05:38:02,615 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:38:02,615 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-25 05:38:02,616 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:38:02,620 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2020-09-25 05:38:02,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:38:02,627 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:38:02,653 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:38:02,653 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-09-25 05:38:02,653 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:38:02,654 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 28 [2020-09-25 05:38:02,654 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:38:02,654 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:38:02,654 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 05:38:02,655 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 05:38:02,655 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-09-25 05:38:02,655 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:38:02,706 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 34 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-09-25 05:38:02,707 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [908176766] [2020-09-25 05:38:02,708 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 05:38:02,708 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-09-25 05:38:02,708 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [44703350] [2020-09-25 05:38:02,709 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-25 05:38:02,709 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 05:38:02,710 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-25 05:38:02,710 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-09-25 05:38:02,711 INFO L87 Difference]: Start difference. First operand 1247 states and 1478 transitions. Second operand 7 states. [2020-09-25 05:38:05,337 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 05:38:05,337 INFO L93 Difference]: Finished difference Result 2818 states and 3478 transitions. [2020-09-25 05:38:05,343 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-09-25 05:38:05,343 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 189 [2020-09-25 05:38:05,344 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 05:38:05,355 INFO L225 Difference]: With dead ends: 2818 [2020-09-25 05:38:05,355 INFO L226 Difference]: Without dead ends: 1593 [2020-09-25 05:38:05,360 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 7 SyntacticMatches, 0 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 05:38:05,363 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1593 states. [2020-09-25 05:38:05,420 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1593 to 1563. [2020-09-25 05:38:05,420 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1563 states. [2020-09-25 05:38:05,428 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1563 states to 1563 states and 1847 transitions. [2020-09-25 05:38:05,428 INFO L78 Accepts]: Start accepts. Automaton has 1563 states and 1847 transitions. Word has length 189 [2020-09-25 05:38:05,429 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 05:38:05,429 INFO L479 AbstractCegarLoop]: Abstraction has 1563 states and 1847 transitions. [2020-09-25 05:38:05,429 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-25 05:38:05,429 INFO L276 IsEmpty]: Start isEmpty. Operand 1563 states and 1847 transitions. [2020-09-25 05:38:05,436 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 192 [2020-09-25 05:38:05,436 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 05:38:05,437 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 05:38:05,437 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-25 05:38:05,437 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 05:38:05,438 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 05:38:05,439 INFO L82 PathProgramCache]: Analyzing trace with hash 1713485497, now seen corresponding path program 1 times [2020-09-25 05:38:05,440 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 05:38:05,440 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1062893697] [2020-09-25 05:38:05,440 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 05:38:05,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:38:05,520 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:38:05,581 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:38:05,663 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:38:06,129 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:38:07,881 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:38:08,059 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:38:10,505 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:38:10,530 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:38:10,530 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 202 [2020-09-25 05:38:10,530 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-09-25 05:38:10,530 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5044 [2020-09-25 05:38:10,530 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:38:10,531 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:38:10,531 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 05:38:10,531 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 64 [2020-09-25 05:38:10,531 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 137 [2020-09-25 05:38:10,531 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 05:38:10,656 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 05:38:10,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:38:10,662 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:38:10,673 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:38:10,673 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 05:38:10,674 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:38:10,674 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-09-25 05:38:10,674 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:38:10,675 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:38:10,675 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 05:38:10,675 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:38:10,675 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 05:38:10,676 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:38:10,697 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-25 05:38:10,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:38:10,715 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:38:10,754 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:38:10,754 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 38 [2020-09-25 05:38:10,754 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:38:10,755 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 45 [2020-09-25 05:38:10,755 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:38:10,755 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:38:10,755 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 05:38:10,755 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:38:10,756 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-09-25 05:38:10,756 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 05:38:10,807 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 31 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 05:38:10,808 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1062893697] [2020-09-25 05:38:10,808 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 05:38:10,808 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-09-25 05:38:10,808 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [362551087] [2020-09-25 05:38:10,810 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 05:38:10,810 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 05:38:10,810 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 05:38:10,811 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-25 05:38:10,811 INFO L87 Difference]: Start difference. First operand 1563 states and 1847 transitions. Second operand 5 states. [2020-09-25 05:38:12,638 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 05:38:12,639 INFO L93 Difference]: Finished difference Result 4186 states and 5121 transitions. [2020-09-25 05:38:12,639 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 05:38:12,639 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 191 [2020-09-25 05:38:12,639 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 05:38:12,651 INFO L225 Difference]: With dead ends: 4186 [2020-09-25 05:38:12,651 INFO L226 Difference]: Without dead ends: 2272 [2020-09-25 05:38:12,658 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 05:38:12,661 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2272 states. [2020-09-25 05:38:12,712 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2272 to 2257. [2020-09-25 05:38:12,713 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2257 states. [2020-09-25 05:38:12,720 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2257 states to 2257 states and 2613 transitions. [2020-09-25 05:38:12,721 INFO L78 Accepts]: Start accepts. Automaton has 2257 states and 2613 transitions. Word has length 191 [2020-09-25 05:38:12,721 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 05:38:12,721 INFO L479 AbstractCegarLoop]: Abstraction has 2257 states and 2613 transitions. [2020-09-25 05:38:12,721 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 05:38:12,721 INFO L276 IsEmpty]: Start isEmpty. Operand 2257 states and 2613 transitions. [2020-09-25 05:38:12,729 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 206 [2020-09-25 05:38:12,729 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 05:38:12,729 INFO L422 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 05:38:12,730 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-25 05:38:12,730 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 05:38:12,730 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 05:38:12,730 INFO L82 PathProgramCache]: Analyzing trace with hash -1421897619, now seen corresponding path program 1 times [2020-09-25 05:38:12,731 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 05:38:12,731 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1204290761] [2020-09-25 05:38:12,731 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 05:38:12,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:38:12,811 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:38:12,884 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:38:12,977 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:38:13,109 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:38:17,772 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:38:17,772 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 218 [2020-09-25 05:38:17,772 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-25 05:38:17,772 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-09-25 05:38:17,772 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:38:17,773 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:38:17,773 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 05:38:17,773 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 78 [2020-09-25 05:38:17,773 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 139 [2020-09-25 05:38:17,773 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 05:38:17,881 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 05:38:17,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:38:17,891 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:38:17,901 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:38:17,902 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 05:38:17,902 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:38:17,902 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-09-25 05:38:17,902 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:38:17,903 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:38:17,903 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 05:38:17,903 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:38:17,903 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 05:38:17,903 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:38:17,926 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-25 05:38:17,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:38:17,930 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:38:17,939 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:38:17,939 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 05:38:17,939 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:38:17,940 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-09-25 05:38:17,940 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:38:17,940 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:38:17,940 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 05:38:17,940 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:38:17,941 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 05:38:17,941 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:38:17,944 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2020-09-25 05:38:17,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:38:17,955 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:38:17,983 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:38:17,983 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-09-25 05:38:17,983 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:38:17,983 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 32 [2020-09-25 05:38:17,983 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:38:17,984 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:38:17,984 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 05:38:17,984 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:38:17,984 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-09-25 05:38:17,984 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 05:38:18,021 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 40 proven. 2 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2020-09-25 05:38:18,021 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1204290761] [2020-09-25 05:38:18,022 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 05:38:18,022 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-09-25 05:38:18,022 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1424609990] [2020-09-25 05:38:18,023 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 05:38:18,023 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 05:38:18,023 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 05:38:18,024 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-25 05:38:18,024 INFO L87 Difference]: Start difference. First operand 2257 states and 2613 transitions. Second operand 5 states. [2020-09-25 05:38:19,855 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 05:38:19,855 INFO L93 Difference]: Finished difference Result 5420 states and 6421 transitions. [2020-09-25 05:38:19,856 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 05:38:19,856 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 205 [2020-09-25 05:38:19,856 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 05:38:19,865 INFO L225 Difference]: With dead ends: 5420 [2020-09-25 05:38:19,865 INFO L226 Difference]: Without dead ends: 1904 [2020-09-25 05:38:19,874 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 9 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 05:38:19,877 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1904 states. [2020-09-25 05:38:19,917 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1904 to 1890. [2020-09-25 05:38:19,917 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1890 states. [2020-09-25 05:38:19,923 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1890 states to 1890 states and 2154 transitions. [2020-09-25 05:38:19,923 INFO L78 Accepts]: Start accepts. Automaton has 1890 states and 2154 transitions. Word has length 205 [2020-09-25 05:38:19,924 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 05:38:19,924 INFO L479 AbstractCegarLoop]: Abstraction has 1890 states and 2154 transitions. [2020-09-25 05:38:19,924 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 05:38:19,924 INFO L276 IsEmpty]: Start isEmpty. Operand 1890 states and 2154 transitions. [2020-09-25 05:38:19,932 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 255 [2020-09-25 05:38:19,932 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 05:38:19,932 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2020-09-25 05:38:19,933 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-09-25 05:38:19,933 INFO L427 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 05:38:19,933 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 05:38:19,933 INFO L82 PathProgramCache]: Analyzing trace with hash 1290106335, now seen corresponding path program 1 times [2020-09-25 05:38:19,934 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 05:38:19,934 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1864047307] [2020-09-25 05:38:19,934 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 05:38:19,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:38:20,024 FATAL L256 erpolLogProxyWrapper]: Now shrinking...