/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=SMALLESTAMONGWIDE --traceabstraction.additional.smt.options tolerance=0.5 --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_label52.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-25 14:37:42,636 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 14:37:42,642 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 14:37:42,686 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 14:37:42,686 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 14:37:42,694 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 14:37:42,697 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 14:37:42,701 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 14:37:42,703 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 14:37:42,707 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 14:37:42,708 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 14:37:42,709 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 14:37:42,709 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 14:37:42,712 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 14:37:42,715 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 14:37:42,718 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 14:37:42,719 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 14:37:42,721 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 14:37:42,722 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 14:37:42,730 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 14:37:42,733 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 14:37:42,734 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 14:37:42,735 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 14:37:42,736 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 14:37:42,754 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 14:37:42,754 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 14:37:42,754 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 14:37:42,756 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 14:37:42,756 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 14:37:42,760 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 14:37:42,760 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 14:37:42,761 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 14:37:42,765 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 14:37:42,766 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 14:37:42,767 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 14:37:42,768 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 14:37:42,768 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 14:37:42,769 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 14:37:42,769 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 14:37:42,770 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 14:37:42,772 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 14:37:42,774 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 14:37:42,818 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 14:37:42,819 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 14:37:42,821 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 14:37:42,821 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 14:37:42,821 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 14:37:42,822 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 14:37:42,822 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 14:37:42,822 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 14:37:42,822 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 14:37:42,823 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 14:37:42,824 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 14:37:42,824 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 14:37:42,824 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 14:37:42,825 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 14:37:42,825 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 14:37:42,825 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 14:37:42,825 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 14:37:42,825 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 14:37:42,826 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 14:37:42,826 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 14:37:42,826 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 14:37:42,826 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 14:37:42,826 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 14:37:42,827 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 14:37:42,827 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 14:37:42,827 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 14:37:42,827 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 14:37:42,827 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 14:37:42,827 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 14:37:42,828 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=SMALLESTAMONGWIDE;tolerance=0.5;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=SMALLESTAMONGWIDE;tolerance=0.5;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=SMALLESTAMONGWIDE;tolerance=0.5;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=SMALLESTAMONGWIDE;tolerance=0.5;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=SMALLESTAMONGWIDE;tolerance=0.5;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=SMALLESTAMONGWIDE;tolerance=0.5;log-additional-information=true; [2020-09-25 14:37:43,285 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 14:37:43,303 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 14:37:43,307 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 14:37:43,309 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 14:37:43,309 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 14:37:43,310 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem01_label52.c [2020-09-25 14:37:43,387 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/acedc5930/258eb653db0b4929a725af79e22a9129/FLAGa677f7067 [2020-09-25 14:37:44,038 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 14:37:44,039 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem01_label52.c [2020-09-25 14:37:44,065 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/acedc5930/258eb653db0b4929a725af79e22a9129/FLAGa677f7067 [2020-09-25 14:37:44,281 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/acedc5930/258eb653db0b4929a725af79e22a9129 [2020-09-25 14:37:44,296 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 14:37:44,303 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 14:37:44,304 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 14:37:44,304 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 14:37:44,309 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 14:37:44,310 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 02:37:44" (1/1) ... [2020-09-25 14:37:44,314 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@22f0616b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:37:44, skipping insertion in model container [2020-09-25 14:37:44,314 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 02:37:44" (1/1) ... [2020-09-25 14:37:44,326 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 14:37:44,387 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 14:37:44,865 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 14:37:44,872 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 14:37:45,123 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 14:37:45,145 INFO L208 MainTranslator]: Completed translation [2020-09-25 14:37:45,146 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:37:45 WrapperNode [2020-09-25 14:37:45,146 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 14:37:45,147 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 14:37:45,147 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 14:37:45,147 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 14:37:45,168 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:37:45" (1/1) ... [2020-09-25 14:37:45,168 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:37:45" (1/1) ... [2020-09-25 14:37:45,189 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:37:45" (1/1) ... [2020-09-25 14:37:45,190 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:37:45" (1/1) ... [2020-09-25 14:37:45,239 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:37:45" (1/1) ... [2020-09-25 14:37:45,262 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:37:45" (1/1) ... [2020-09-25 14:37:45,269 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:37:45" (1/1) ... [2020-09-25 14:37:45,278 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 14:37:45,279 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 14:37:45,279 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 14:37:45,279 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 14:37:45,281 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:37:45" (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 14:37:45,380 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 14:37:45,380 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 14:37:45,380 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-09-25 14:37:45,381 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 14:37:45,381 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-09-25 14:37:45,381 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 14:37:45,381 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-25 14:37:45,381 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-09-25 14:37:45,382 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 14:37:45,382 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 14:37:45,382 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 14:37:46,839 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 14:37:46,839 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-09-25 14:37:46,849 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 02:37:46 BoogieIcfgContainer [2020-09-25 14:37:46,849 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 14:37:46,851 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 14:37:46,851 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 14:37:46,855 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 14:37:46,856 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 02:37:44" (1/3) ... [2020-09-25 14:37:46,857 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@366eec5a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 02:37:46, skipping insertion in model container [2020-09-25 14:37:46,857 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:37:45" (2/3) ... [2020-09-25 14:37:46,858 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@366eec5a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 02:37:46, skipping insertion in model container [2020-09-25 14:37:46,858 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 02:37:46" (3/3) ... [2020-09-25 14:37:46,862 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem01_label52.c [2020-09-25 14:37:46,875 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 14:37:46,892 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-25 14:37:46,916 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-25 14:37:46,959 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 14:37:46,959 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 14:37:46,959 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 14:37:46,959 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 14:37:46,960 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 14:37:46,960 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 14:37:46,960 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 14:37:46,960 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 14:37:46,994 INFO L276 IsEmpty]: Start isEmpty. Operand 525 states. [2020-09-25 14:37:47,017 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2020-09-25 14:37:47,017 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 14:37:47,019 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 14:37:47,019 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 14:37:47,027 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 14:37:47,028 INFO L82 PathProgramCache]: Analyzing trace with hash 1583508727, now seen corresponding path program 1 times [2020-09-25 14:37:47,038 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 14:37:47,039 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [655560260] [2020-09-25 14:37:47,039 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 14:37:47,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:37:47,407 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:37:47,683 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:37:48,063 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:37:49,275 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:37:49,652 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:37:50,479 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:37:51,814 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:37:52,260 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:37:52,361 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:37:52,362 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 163 [2020-09-25 14:37:52,362 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-09-25 14:37:52,362 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5048 [2020-09-25 14:37:52,367 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:37:52,367 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:37:52,368 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 14:37:52,368 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 18 [2020-09-25 14:37:52,368 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 144 [2020-09-25 14:37:52,368 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 5 [2020-09-25 14:37:52,599 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 14:37:52,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:37:52,613 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:37:52,632 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:37:52,632 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-25 14:37:52,632 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:37:52,633 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 23 [2020-09-25 14:37:52,633 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:37:52,633 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:37:52,633 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 14:37:52,634 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:37:52,634 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-09-25 14:37:52,634 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:37:52,715 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 14:37:52,716 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [655560260] [2020-09-25 14:37:52,719 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 14:37:52,719 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-25 14:37:52,720 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1596960649] [2020-09-25 14:37:52,728 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-25 14:37:52,728 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 14:37:52,749 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-25 14:37:52,750 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-25 14:37:52,753 INFO L87 Difference]: Start difference. First operand 525 states. Second operand 4 states. [2020-09-25 14:37:55,239 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 14:37:55,240 INFO L93 Difference]: Finished difference Result 1268 states and 1667 transitions. [2020-09-25 14:37:55,241 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-25 14:37:55,243 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 154 [2020-09-25 14:37:55,245 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 14:37:55,291 INFO L225 Difference]: With dead ends: 1268 [2020-09-25 14:37:55,292 INFO L226 Difference]: Without dead ends: 694 [2020-09-25 14:37:55,306 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 14:37:55,335 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 694 states. [2020-09-25 14:37:55,431 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 694 to 603. [2020-09-25 14:37:55,433 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 603 states. [2020-09-25 14:37:55,437 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 603 states to 603 states and 719 transitions. [2020-09-25 14:37:55,440 INFO L78 Accepts]: Start accepts. Automaton has 603 states and 719 transitions. Word has length 154 [2020-09-25 14:37:55,441 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 14:37:55,442 INFO L479 AbstractCegarLoop]: Abstraction has 603 states and 719 transitions. [2020-09-25 14:37:55,442 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-25 14:37:55,442 INFO L276 IsEmpty]: Start isEmpty. Operand 603 states and 719 transitions. [2020-09-25 14:37:55,452 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 176 [2020-09-25 14:37:55,453 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 14:37:55,453 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 14:37:55,454 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 14:37:55,454 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 14:37:55,454 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 14:37:55,455 INFO L82 PathProgramCache]: Analyzing trace with hash -81177825, now seen corresponding path program 1 times [2020-09-25 14:37:55,455 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 14:37:55,455 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [63124942] [2020-09-25 14:37:55,456 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 14:37:55,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:37:55,556 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:37:55,639 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:37:56,135 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:37:56,994 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:37:57,479 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:37:57,913 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:38:00,499 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:38:00,500 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 186 [2020-09-25 14:38:00,500 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-09-25 14:38:00,500 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-09-25 14:38:00,501 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:38:00,501 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:38:00,501 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-09-25 14:38:00,502 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 46 [2020-09-25 14:38:00,502 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 84 [2020-09-25 14:38:00,502 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:38:01,143 WARN L193 SmtUtils]: Spent 136.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 46 [2020-09-25 14:38:01,298 WARN L193 SmtUtils]: Spent 133.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 43 [2020-09-25 14:38:01,542 WARN L193 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 35 [2020-09-25 14:38:01,818 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 14:38:01,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:38:01,827 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:38:01,839 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:38:01,840 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-25 14:38:01,840 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:38:01,840 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-09-25 14:38:01,840 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:38:01,841 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:38:01,841 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 14:38:01,841 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:38:01,841 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 14:38:01,842 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:38:01,877 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-09-25 14:38:01,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:38:01,887 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:38:01,918 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:38:01,919 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-09-25 14:38:01,919 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:38:01,919 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 35 [2020-09-25 14:38:01,919 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:38:01,920 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:38:01,949 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 14:38:01,950 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:38:01,950 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-25 14:38:01,950 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 30 [2020-09-25 14:38:02,133 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 13 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 14:38:02,134 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [63124942] [2020-09-25 14:38:02,134 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 14:38:02,134 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2020-09-25 14:38:02,135 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [606981855] [2020-09-25 14:38:02,137 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-09-25 14:38:02,137 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 14:38:02,138 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-09-25 14:38:02,138 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=134, Unknown=0, NotChecked=0, Total=182 [2020-09-25 14:38:02,138 INFO L87 Difference]: Start difference. First operand 603 states and 719 transitions. Second operand 14 states. [2020-09-25 14:38:02,843 WARN L193 SmtUtils]: Spent 115.00 ms on a formula simplification that was a NOOP. DAG size: 96 [2020-09-25 14:38:03,048 WARN L193 SmtUtils]: Spent 167.00 ms on a formula simplification that was a NOOP. DAG size: 116 [2020-09-25 14:38:03,492 WARN L193 SmtUtils]: Spent 314.00 ms on a formula simplification. DAG size of input: 119 DAG size of output: 113 [2020-09-25 14:38:04,051 WARN L193 SmtUtils]: Spent 332.00 ms on a formula simplification. DAG size of input: 119 DAG size of output: 110 [2020-09-25 14:38:04,429 WARN L193 SmtUtils]: Spent 283.00 ms on a formula simplification. DAG size of input: 119 DAG size of output: 107 [2020-09-25 14:38:04,658 WARN L193 SmtUtils]: Spent 173.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 60 [2020-09-25 14:38:05,458 WARN L193 SmtUtils]: Spent 278.00 ms on a formula simplification. DAG size of input: 119 DAG size of output: 104 [2020-09-25 14:38:06,318 WARN L193 SmtUtils]: Spent 258.00 ms on a formula simplification. DAG size of input: 118 DAG size of output: 99 [2020-09-25 14:38:06,855 WARN L193 SmtUtils]: Spent 127.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 49 [2020-09-25 14:38:07,042 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 14:38:07,043 INFO L93 Difference]: Finished difference Result 1284 states and 1593 transitions. [2020-09-25 14:38:07,045 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-09-25 14:38:07,046 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 175 [2020-09-25 14:38:07,046 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 14:38:07,051 INFO L225 Difference]: With dead ends: 1284 [2020-09-25 14:38:07,051 INFO L226 Difference]: Without dead ends: 705 [2020-09-25 14:38:07,055 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 6 SyntacticMatches, 1 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 101 ImplicationChecksByTransitivity, 3.4s TimeCoverageRelationStatistics Valid=190, Invalid=410, Unknown=0, NotChecked=0, Total=600 [2020-09-25 14:38:07,056 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 705 states. [2020-09-25 14:38:07,083 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 705 to 684. [2020-09-25 14:38:07,083 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 684 states. [2020-09-25 14:38:07,087 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 684 states to 684 states and 809 transitions. [2020-09-25 14:38:07,088 INFO L78 Accepts]: Start accepts. Automaton has 684 states and 809 transitions. Word has length 175 [2020-09-25 14:38:07,088 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 14:38:07,088 INFO L479 AbstractCegarLoop]: Abstraction has 684 states and 809 transitions. [2020-09-25 14:38:07,088 INFO L480 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-09-25 14:38:07,089 INFO L276 IsEmpty]: Start isEmpty. Operand 684 states and 809 transitions. [2020-09-25 14:38:07,093 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 177 [2020-09-25 14:38:07,093 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 14:38:07,093 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 14:38:07,094 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-25 14:38:07,094 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 14:38:07,094 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 14:38:07,094 INFO L82 PathProgramCache]: Analyzing trace with hash -1469093243, now seen corresponding path program 1 times [2020-09-25 14:38:07,095 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 14:38:07,095 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1545838506] [2020-09-25 14:38:07,095 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 14:38:07,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:38:07,136 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:38:07,219 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:38:07,731 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:38:08,360 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:38:08,468 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:38:09,907 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:38:10,736 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:38:11,459 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:38:12,126 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:38:12,126 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 187 [2020-09-25 14:38:12,126 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-09-25 14:38:12,127 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5007 [2020-09-25 14:38:12,127 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:38:12,127 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:38:12,127 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 18 [2020-09-25 14:38:12,128 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 22 [2020-09-25 14:38:12,128 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 109 [2020-09-25 14:38:12,128 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:38:13,189 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 14:38:13,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:38:13,199 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:38:13,216 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:38:13,216 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-25 14:38:13,217 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:38:13,217 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-09-25 14:38:13,217 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:38:13,217 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:38:13,218 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 14:38:13,218 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:38:13,218 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-09-25 14:38:13,218 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:38:13,254 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-09-25 14:38:13,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:38:13,263 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:38:13,288 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:38:13,438 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:38:13,439 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 14:38:13,439 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 14:38:13,439 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 179 [2020-09-25 14:38:13,440 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:38:13,440 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:38:13,441 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-25 14:38:13,441 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:38:13,441 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-09-25 14:38:13,442 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:38:13,819 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 14:38:13,820 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1545838506] [2020-09-25 14:38:13,820 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 14:38:13,825 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20] total 20 [2020-09-25 14:38:13,826 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1599717513] [2020-09-25 14:38:13,827 INFO L459 AbstractCegarLoop]: Interpolant automaton has 20 states [2020-09-25 14:38:13,828 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 14:38:13,828 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2020-09-25 14:38:13,829 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=85, Invalid=295, Unknown=0, NotChecked=0, Total=380 [2020-09-25 14:38:13,829 INFO L87 Difference]: Start difference. First operand 684 states and 809 transitions. Second operand 20 states. [2020-09-25 14:38:15,221 WARN L193 SmtUtils]: Spent 205.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 83 [2020-09-25 14:38:15,514 WARN L193 SmtUtils]: Spent 238.00 ms on a formula simplification. DAG size of input: 93 DAG size of output: 91 [2020-09-25 14:38:16,075 WARN L193 SmtUtils]: Spent 244.00 ms on a formula simplification. DAG size of input: 97 DAG size of output: 89 [2020-09-25 14:38:16,568 WARN L193 SmtUtils]: Spent 216.00 ms on a formula simplification. DAG size of input: 97 DAG size of output: 88 [2020-09-25 14:38:16,965 WARN L193 SmtUtils]: Spent 235.00 ms on a formula simplification. DAG size of input: 97 DAG size of output: 87 [2020-09-25 14:38:18,309 WARN L193 SmtUtils]: Spent 207.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 81 [2020-09-25 14:38:18,672 WARN L193 SmtUtils]: Spent 179.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 80 [2020-09-25 14:38:19,161 WARN L193 SmtUtils]: Spent 217.00 ms on a formula simplification. DAG size of input: 97 DAG size of output: 86 [2020-09-25 14:38:20,529 WARN L193 SmtUtils]: Spent 190.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 78 [2020-09-25 14:38:21,114 WARN L193 SmtUtils]: Spent 219.00 ms on a formula simplification. DAG size of input: 96 DAG size of output: 84 [2020-09-25 14:38:22,129 WARN L193 SmtUtils]: Spent 165.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 76 [2020-09-25 14:38:23,095 WARN L193 SmtUtils]: Spent 164.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 74 [2020-09-25 14:38:24,531 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 14:38:24,531 INFO L93 Difference]: Finished difference Result 2208 states and 2814 transitions. [2020-09-25 14:38:24,532 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2020-09-25 14:38:24,532 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 176 [2020-09-25 14:38:24,533 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 14:38:24,547 INFO L225 Difference]: With dead ends: 2208 [2020-09-25 14:38:24,547 INFO L226 Difference]: Without dead ends: 1548 [2020-09-25 14:38:24,552 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 303 ImplicationChecksByTransitivity, 4.3s TimeCoverageRelationStatistics Valid=545, Invalid=1261, Unknown=0, NotChecked=0, Total=1806 [2020-09-25 14:38:24,554 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1548 states. [2020-09-25 14:38:24,612 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1548 to 1282. [2020-09-25 14:38:24,612 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1282 states. [2020-09-25 14:38:24,621 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1282 states to 1282 states and 1520 transitions. [2020-09-25 14:38:24,621 INFO L78 Accepts]: Start accepts. Automaton has 1282 states and 1520 transitions. Word has length 176 [2020-09-25 14:38:24,622 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 14:38:24,622 INFO L479 AbstractCegarLoop]: Abstraction has 1282 states and 1520 transitions. [2020-09-25 14:38:24,622 INFO L480 AbstractCegarLoop]: Interpolant automaton has 20 states. [2020-09-25 14:38:24,622 INFO L276 IsEmpty]: Start isEmpty. Operand 1282 states and 1520 transitions. [2020-09-25 14:38:24,632 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 184 [2020-09-25 14:38:24,632 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 14:38:24,633 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 14:38:24,633 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-25 14:38:24,634 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 14:38:24,634 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 14:38:24,634 INFO L82 PathProgramCache]: Analyzing trace with hash -231794110, now seen corresponding path program 1 times [2020-09-25 14:38:24,634 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 14:38:24,635 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [745689039] [2020-09-25 14:38:24,635 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 14:38:24,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:38:24,723 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:38:24,845 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:38:25,025 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:38:25,683 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:38:25,901 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:38:26,754 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:38:29,041 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:38:29,687 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:38:29,688 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 194 [2020-09-25 14:38:29,688 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-09-25 14:38:29,688 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5004 [2020-09-25 14:38:29,688 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:38:29,689 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:38:29,689 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-25 14:38:29,689 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-09-25 14:38:29,689 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 172 [2020-09-25 14:38:29,689 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:38:29,816 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 14:38:29,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:38:29,826 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:38:29,845 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:38:29,846 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-25 14:38:29,846 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:38:29,846 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 23 [2020-09-25 14:38:29,846 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:38:29,847 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:38:29,847 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 14:38:29,847 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:38:29,847 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-09-25 14:38:29,847 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:38:29,873 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-09-25 14:38:29,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:38:29,886 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:38:29,914 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:38:29,947 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:38:29,947 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 14:38:29,948 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 14:38:29,948 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 65 [2020-09-25 14:38:29,948 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:38:29,948 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:38:29,948 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 14:38:29,949 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:38:29,949 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-09-25 14:38:29,949 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:38:29,984 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 12 proven. 1 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2020-09-25 14:38:29,984 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [745689039] [2020-09-25 14:38:29,984 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 14:38:29,985 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-09-25 14:38:29,985 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [398071285] [2020-09-25 14:38:29,985 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 14:38:29,986 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 14:38:29,986 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 14:38:29,986 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-25 14:38:29,986 INFO L87 Difference]: Start difference. First operand 1282 states and 1520 transitions. Second operand 5 states. [2020-09-25 14:38:31,805 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 14:38:31,806 INFO L93 Difference]: Finished difference Result 3145 states and 3889 transitions. [2020-09-25 14:38:31,808 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 14:38:31,808 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 183 [2020-09-25 14:38:31,809 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 14:38:31,821 INFO L225 Difference]: With dead ends: 3145 [2020-09-25 14:38:31,822 INFO L226 Difference]: Without dead ends: 1887 [2020-09-25 14:38:31,827 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 14:38:31,829 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1887 states. [2020-09-25 14:38:31,887 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1887 to 1854. [2020-09-25 14:38:31,888 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1854 states. [2020-09-25 14:38:31,899 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1854 states to 1854 states and 2275 transitions. [2020-09-25 14:38:31,899 INFO L78 Accepts]: Start accepts. Automaton has 1854 states and 2275 transitions. Word has length 183 [2020-09-25 14:38:31,901 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 14:38:31,901 INFO L479 AbstractCegarLoop]: Abstraction has 1854 states and 2275 transitions. [2020-09-25 14:38:31,901 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 14:38:31,901 INFO L276 IsEmpty]: Start isEmpty. Operand 1854 states and 2275 transitions. [2020-09-25 14:38:31,913 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 185 [2020-09-25 14:38:31,913 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 14:38:31,913 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 14:38:31,913 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-25 14:38:31,914 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 14:38:31,914 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 14:38:31,914 INFO L82 PathProgramCache]: Analyzing trace with hash -1550643776, now seen corresponding path program 1 times [2020-09-25 14:38:31,915 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 14:38:31,915 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1245884509] [2020-09-25 14:38:31,918 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 14:38:31,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:38:31,999 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:38:32,130 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:38:32,313 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:38:32,476 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:38:32,683 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:38:32,841 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:38:33,147 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:38:33,463 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:38:33,555 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:38:33,610 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:38:33,741 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:38:34,255 FATAL L256 erpolLogProxyWrapper]: Now shrinking...