/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=0.1 --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_label11.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-25 10:06:14,000 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 10:06:14,005 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 10:06:14,053 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 10:06:14,053 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 10:06:14,062 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 10:06:14,064 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 10:06:14,068 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 10:06:14,071 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 10:06:14,074 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 10:06:14,075 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 10:06:14,076 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 10:06:14,077 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 10:06:14,080 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 10:06:14,082 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 10:06:14,084 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 10:06:14,086 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 10:06:14,088 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 10:06:14,089 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 10:06:14,098 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 10:06:14,101 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 10:06:14,102 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 10:06:14,103 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 10:06:14,104 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 10:06:14,120 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 10:06:14,121 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 10:06:14,121 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 10:06:14,125 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 10:06:14,126 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 10:06:14,127 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 10:06:14,127 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 10:06:14,131 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 10:06:14,132 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 10:06:14,133 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 10:06:14,134 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 10:06:14,136 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 10:06:14,137 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 10:06:14,137 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 10:06:14,137 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 10:06:14,138 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 10:06:14,139 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 10:06:14,140 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 10:06:14,184 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 10:06:14,184 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 10:06:14,186 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 10:06:14,187 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 10:06:14,187 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 10:06:14,187 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 10:06:14,188 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 10:06:14,188 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 10:06:14,188 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 10:06:14,188 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 10:06:14,189 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 10:06:14,190 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 10:06:14,190 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 10:06:14,190 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 10:06:14,190 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 10:06:14,191 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 10:06:14,191 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 10:06:14,191 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 10:06:14,191 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 10:06:14,191 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 10:06:14,192 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 10:06:14,192 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 10:06:14,192 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 10:06:14,193 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 10:06:14,193 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 10:06:14,193 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 10:06:14,193 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 10:06:14,193 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 10:06:14,194 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 10:06:14,194 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=0.1;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=0.1;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=0.1;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=0.1;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=0.1;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=0.1;log-additional-information=true; [2020-09-25 10:06:14,672 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 10:06:14,691 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 10:06:14,695 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 10:06:14,699 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 10:06:14,700 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 10:06:14,701 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem01_label11.c [2020-09-25 10:06:14,810 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/b423ce587/3d8bb22bae044c778918c78d7e74be6f/FLAGd2dab2dd7 [2020-09-25 10:06:15,469 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 10:06:15,472 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem01_label11.c [2020-09-25 10:06:15,500 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/b423ce587/3d8bb22bae044c778918c78d7e74be6f/FLAGd2dab2dd7 [2020-09-25 10:06:15,699 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/b423ce587/3d8bb22bae044c778918c78d7e74be6f [2020-09-25 10:06:15,712 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 10:06:15,717 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 10:06:15,719 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 10:06:15,719 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 10:06:15,723 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 10:06:15,725 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 10:06:15" (1/1) ... [2020-09-25 10:06:15,729 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@75e37eeb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:06:15, skipping insertion in model container [2020-09-25 10:06:15,730 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 10:06:15" (1/1) ... [2020-09-25 10:06:15,739 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 10:06:15,801 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 10:06:16,389 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 10:06:16,409 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 10:06:16,618 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 10:06:16,638 INFO L208 MainTranslator]: Completed translation [2020-09-25 10:06:16,638 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:06:16 WrapperNode [2020-09-25 10:06:16,639 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 10:06:16,640 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 10:06:16,640 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 10:06:16,640 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 10:06:16,654 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:06:16" (1/1) ... [2020-09-25 10:06:16,654 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:06:16" (1/1) ... [2020-09-25 10:06:16,673 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:06:16" (1/1) ... [2020-09-25 10:06:16,674 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:06:16" (1/1) ... [2020-09-25 10:06:16,718 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:06:16" (1/1) ... [2020-09-25 10:06:16,736 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:06:16" (1/1) ... [2020-09-25 10:06:16,742 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:06:16" (1/1) ... [2020-09-25 10:06:16,753 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 10:06:16,754 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 10:06:16,754 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 10:06:16,754 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 10:06:16,756 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:06:16" (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 10:06:16,854 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 10:06:16,854 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 10:06:16,854 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-09-25 10:06:16,854 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 10:06:16,855 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-09-25 10:06:16,855 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 10:06:16,855 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-25 10:06:16,856 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-09-25 10:06:16,856 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 10:06:16,856 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 10:06:16,856 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 10:06:18,312 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 10:06:18,312 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-09-25 10:06:18,330 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 10:06:18 BoogieIcfgContainer [2020-09-25 10:06:18,332 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 10:06:18,335 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 10:06:18,336 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 10:06:18,339 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 10:06:18,340 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 10:06:15" (1/3) ... [2020-09-25 10:06:18,341 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@57f7315f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 10:06:18, skipping insertion in model container [2020-09-25 10:06:18,341 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:06:16" (2/3) ... [2020-09-25 10:06:18,342 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@57f7315f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 10:06:18, skipping insertion in model container [2020-09-25 10:06:18,342 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 10:06:18" (3/3) ... [2020-09-25 10:06:18,345 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem01_label11.c [2020-09-25 10:06:18,358 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 10:06:18,371 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-25 10:06:18,395 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-25 10:06:18,436 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 10:06:18,437 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 10:06:18,437 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 10:06:18,438 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 10:06:18,438 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 10:06:18,438 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 10:06:18,438 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 10:06:18,438 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 10:06:18,488 INFO L276 IsEmpty]: Start isEmpty. Operand 525 states. [2020-09-25 10:06:18,525 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 138 [2020-09-25 10:06:18,525 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 10:06:18,527 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] [2020-09-25 10:06:18,527 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 10:06:18,536 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 10:06:18,537 INFO L82 PathProgramCache]: Analyzing trace with hash 149723165, now seen corresponding path program 1 times [2020-09-25 10:06:18,548 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 10:06:18,549 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1766651903] [2020-09-25 10:06:18,549 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 10:06:18,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:06:19,008 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:06:19,311 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:06:19,640 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:06:19,920 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:06:20,356 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:06:20,895 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:06:23,612 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:06:23,896 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:06:23,896 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 146 [2020-09-25 10:06:23,897 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-09-25 10:06:23,897 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5009 [2020-09-25 10:06:23,902 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:06:23,902 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:06:23,902 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 10:06:23,902 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 23 [2020-09-25 10:06:23,903 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 122 [2020-09-25 10:06:23,903 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 5 [2020-09-25 10:06:24,163 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 10:06:24,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:06:24,188 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:06:24,216 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:06:24,216 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-25 10:06:24,217 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:06:24,217 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 34 [2020-09-25 10:06:24,217 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:06:24,218 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:06:24,218 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 10:06:24,219 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:06:24,219 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 19 [2020-09-25 10:06:24,219 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 10:06:24,314 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 10:06:24,316 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1766651903] [2020-09-25 10:06:24,319 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 10:06:24,320 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-25 10:06:24,321 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1807040055] [2020-09-25 10:06:24,330 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 10:06:24,330 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 10:06:24,348 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 10:06:24,349 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-25 10:06:24,351 INFO L87 Difference]: Start difference. First operand 525 states. Second operand 5 states. [2020-09-25 10:06:26,697 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 10:06:26,697 INFO L93 Difference]: Finished difference Result 1259 states and 1658 transitions. [2020-09-25 10:06:26,698 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-25 10:06:26,699 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 137 [2020-09-25 10:06:26,701 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 10:06:26,727 INFO L225 Difference]: With dead ends: 1259 [2020-09-25 10:06:26,727 INFO L226 Difference]: Without dead ends: 685 [2020-09-25 10:06:26,738 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 4 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 10:06:26,762 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 685 states. [2020-09-25 10:06:26,840 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 685 to 603. [2020-09-25 10:06:26,842 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 603 states. [2020-09-25 10:06:26,846 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 603 states to 603 states and 725 transitions. [2020-09-25 10:06:26,848 INFO L78 Accepts]: Start accepts. Automaton has 603 states and 725 transitions. Word has length 137 [2020-09-25 10:06:26,849 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 10:06:26,849 INFO L479 AbstractCegarLoop]: Abstraction has 603 states and 725 transitions. [2020-09-25 10:06:26,849 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 10:06:26,850 INFO L276 IsEmpty]: Start isEmpty. Operand 603 states and 725 transitions. [2020-09-25 10:06:26,854 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 159 [2020-09-25 10:06:26,855 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 10:06:26,855 INFO L422 BasicCegarLoop]: trace histogram [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 10:06:26,856 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 10:06:26,856 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 10:06:26,856 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 10:06:26,856 INFO L82 PathProgramCache]: Analyzing trace with hash 1946630892, now seen corresponding path program 1 times [2020-09-25 10:06:26,857 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 10:06:26,857 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [300790014] [2020-09-25 10:06:26,857 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 10:06:26,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:06:26,905 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:06:27,067 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:06:27,569 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:06:27,781 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:06:27,902 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:06:28,497 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:06:31,420 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:06:31,532 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:06:31,887 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:06:31,887 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 169 [2020-09-25 10:06:31,887 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-09-25 10:06:31,888 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-09-25 10:06:31,888 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:06:31,888 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:06:31,888 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-09-25 10:06:31,889 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 18 [2020-09-25 10:06:31,889 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 138 [2020-09-25 10:06:31,889 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:06:32,381 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 10:06:32,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:06:32,396 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:06:32,439 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:06:32,439 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-25 10:06:32,439 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:06:32,439 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 48 [2020-09-25 10:06:32,440 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:06:32,440 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:06:32,440 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 10:06:32,440 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:06:32,441 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-09-25 10:06:32,441 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:06:32,494 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-09-25 10:06:32,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:06:32,503 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:06:32,529 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:06:32,581 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:06:32,581 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-09-25 10:06:32,582 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 10:06:32,582 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 81 [2020-09-25 10:06:32,582 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:06:32,582 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:06:32,583 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 10:06:32,583 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 10:06:32,583 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-09-25 10:06:32,584 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:06:32,830 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 10 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 10:06:32,831 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [300790014] [2020-09-25 10:06:32,831 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 10:06:32,831 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2020-09-25 10:06:32,832 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [464644948] [2020-09-25 10:06:32,834 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-09-25 10:06:32,834 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 10:06:32,834 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-09-25 10:06:32,835 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=117, Unknown=0, NotChecked=0, Total=182 [2020-09-25 10:06:32,835 INFO L87 Difference]: Start difference. First operand 603 states and 725 transitions. Second operand 14 states. [2020-09-25 10:06:33,457 WARN L193 SmtUtils]: Spent 118.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 65 [2020-09-25 10:06:35,376 WARN L193 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 67 [2020-09-25 10:06:35,631 WARN L193 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 60 [2020-09-25 10:06:39,856 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 10:06:39,857 INFO L93 Difference]: Finished difference Result 2369 states and 3195 transitions. [2020-09-25 10:06:39,857 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-09-25 10:06:39,857 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 158 [2020-09-25 10:06:39,858 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 10:06:39,877 INFO L225 Difference]: With dead ends: 2369 [2020-09-25 10:06:39,877 INFO L226 Difference]: Without dead ends: 1555 [2020-09-25 10:06:39,884 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 4 SyntacticMatches, 1 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 223 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=330, Invalid=600, Unknown=0, NotChecked=0, Total=930 [2020-09-25 10:06:39,886 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1555 states. [2020-09-25 10:06:39,953 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1555 to 1210. [2020-09-25 10:06:39,953 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1210 states. [2020-09-25 10:06:39,960 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1210 states to 1210 states and 1456 transitions. [2020-09-25 10:06:39,961 INFO L78 Accepts]: Start accepts. Automaton has 1210 states and 1456 transitions. Word has length 158 [2020-09-25 10:06:39,961 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 10:06:39,962 INFO L479 AbstractCegarLoop]: Abstraction has 1210 states and 1456 transitions. [2020-09-25 10:06:39,962 INFO L480 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-09-25 10:06:39,962 INFO L276 IsEmpty]: Start isEmpty. Operand 1210 states and 1456 transitions. [2020-09-25 10:06:39,970 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 159 [2020-09-25 10:06:39,971 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 10:06:39,971 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-09-25 10:06:39,972 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-25 10:06:39,972 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 10:06:39,972 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 10:06:39,973 INFO L82 PathProgramCache]: Analyzing trace with hash 1076336430, now seen corresponding path program 1 times [2020-09-25 10:06:39,973 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 10:06:39,973 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1316742428] [2020-09-25 10:06:39,973 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 10:06:40,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:06:40,070 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:06:40,475 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:06:40,575 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:06:40,676 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:06:41,549 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:06:41,669 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:06:41,845 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:06:43,034 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:06:43,110 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:06:45,053 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:06:45,053 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 169 [2020-09-25 10:06:45,054 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-09-25 10:06:45,054 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5023 [2020-09-25 10:06:45,055 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:06:45,055 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:06:45,055 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-09-25 10:06:45,055 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 18 [2020-09-25 10:06:45,056 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 138 [2020-09-25 10:06:45,056 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:06:45,237 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 10:06:45,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:06:45,249 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:06:45,297 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:06:45,297 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-25 10:06:45,298 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:06:45,298 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 53 [2020-09-25 10:06:45,298 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:06:45,298 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:06:45,299 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 10:06:45,299 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:06:45,299 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-09-25 10:06:45,299 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:06:45,360 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-09-25 10:06:45,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:06:45,370 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:06:45,408 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:06:45,463 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:06:45,463 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-09-25 10:06:45,464 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 10:06:45,464 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 96 [2020-09-25 10:06:45,464 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:06:45,464 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:06:45,464 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-25 10:06:45,465 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 10:06:45,465 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-09-25 10:06:45,465 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:06:45,681 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 7 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 10:06:45,682 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1316742428] [2020-09-25 10:06:45,682 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 10:06:45,682 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-09-25 10:06:45,683 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2146931931] [2020-09-25 10:06:45,683 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-09-25 10:06:45,683 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 10:06:45,684 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-09-25 10:06:45,684 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=114, Unknown=0, NotChecked=0, Total=156 [2020-09-25 10:06:45,684 INFO L87 Difference]: Start difference. First operand 1210 states and 1456 transitions. Second operand 13 states. [2020-09-25 10:06:51,129 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 10:06:51,129 INFO L93 Difference]: Finished difference Result 3428 states and 4163 transitions. [2020-09-25 10:06:51,130 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2020-09-25 10:06:51,130 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 158 [2020-09-25 10:06:51,131 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 10:06:51,148 INFO L225 Difference]: With dead ends: 3428 [2020-09-25 10:06:51,149 INFO L226 Difference]: Without dead ends: 2123 [2020-09-25 10:06:51,155 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 4 SyntacticMatches, 1 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 246 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=286, Invalid=706, Unknown=0, NotChecked=0, Total=992 [2020-09-25 10:06:51,158 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2123 states. [2020-09-25 10:06:51,224 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2123 to 1784. [2020-09-25 10:06:51,224 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1784 states. [2020-09-25 10:06:51,232 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1784 states to 1784 states and 2100 transitions. [2020-09-25 10:06:51,232 INFO L78 Accepts]: Start accepts. Automaton has 1784 states and 2100 transitions. Word has length 158 [2020-09-25 10:06:51,233 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 10:06:51,233 INFO L479 AbstractCegarLoop]: Abstraction has 1784 states and 2100 transitions. [2020-09-25 10:06:51,242 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-09-25 10:06:51,242 INFO L276 IsEmpty]: Start isEmpty. Operand 1784 states and 2100 transitions. [2020-09-25 10:06:51,253 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 187 [2020-09-25 10:06:51,253 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 10:06:51,254 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 10:06:51,254 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-25 10:06:51,254 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 10:06:51,255 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 10:06:51,255 INFO L82 PathProgramCache]: Analyzing trace with hash -1439591385, now seen corresponding path program 1 times [2020-09-25 10:06:51,256 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 10:06:51,257 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1238978682] [2020-09-25 10:06:51,257 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 10:06:51,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:06:51,344 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:06:51,611 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:06:51,724 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:06:51,884 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:06:52,065 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:06:53,286 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:06:54,975 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:06:55,747 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:06:56,336 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:06:56,336 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 199 [2020-09-25 10:06:56,338 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-09-25 10:06:56,338 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5035 [2020-09-25 10:06:56,338 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:06:56,339 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:06:56,339 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 16 [2020-09-25 10:06:56,340 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 18 [2020-09-25 10:06:56,340 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 168 [2020-09-25 10:06:56,340 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:06:56,667 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 10:06:56,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:06:56,680 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:06:56,724 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:06:56,725 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-25 10:06:56,725 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:06:56,725 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 49 [2020-09-25 10:06:56,726 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:06:56,726 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:06:56,727 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 10:06:56,727 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:06:56,727 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-09-25 10:06:56,727 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:06:56,783 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-09-25 10:06:56,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:06:56,789 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:06:56,806 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:06:56,820 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:06:56,821 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-09-25 10:06:56,821 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 10:06:56,821 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 33 [2020-09-25 10:06:56,822 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:06:56,822 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:06:56,823 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 10:06:56,823 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 10:06:56,823 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-09-25 10:06:56,824 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:06:56,852 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2020-09-25 10:06:56,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:06:56,866 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:06:56,941 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:06:57,061 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:06:57,062 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 28 [2020-09-25 10:06:57,062 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 10:06:57,063 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 202 [2020-09-25 10:06:57,063 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:06:57,063 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:06:57,064 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-25 10:06:57,064 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 10:06:57,064 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 27 [2020-09-25 10:06:57,065 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:06:57,454 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 21 proven. 16 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-09-25 10:06:57,455 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1238978682] [2020-09-25 10:06:57,455 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 10:06:57,455 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2020-09-25 10:06:57,455 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [212261726] [2020-09-25 10:06:57,456 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-09-25 10:06:57,456 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 10:06:57,457 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-09-25 10:06:57,457 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=129, Unknown=0, NotChecked=0, Total=182 [2020-09-25 10:06:57,457 INFO L87 Difference]: Start difference. First operand 1784 states and 2100 transitions. Second operand 14 states. [2020-09-25 10:07:02,482 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 10:07:02,483 INFO L93 Difference]: Finished difference Result 2685 states and 3138 transitions. [2020-09-25 10:07:02,483 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2020-09-25 10:07:02,483 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 186 [2020-09-25 10:07:02,484 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 10:07:02,499 INFO L225 Difference]: With dead ends: 2685 [2020-09-25 10:07:02,499 INFO L226 Difference]: Without dead ends: 2412 [2020-09-25 10:07:02,503 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 6 SyntacticMatches, 1 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 254 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=339, Invalid=783, Unknown=0, NotChecked=0, Total=1122 [2020-09-25 10:07:02,507 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2412 states. [2020-09-25 10:07:02,586 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2412 to 1771. [2020-09-25 10:07:02,586 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1771 states. [2020-09-25 10:07:02,592 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1771 states to 1771 states and 2075 transitions. [2020-09-25 10:07:02,593 INFO L78 Accepts]: Start accepts. Automaton has 1771 states and 2075 transitions. Word has length 186 [2020-09-25 10:07:02,593 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 10:07:02,593 INFO L479 AbstractCegarLoop]: Abstraction has 1771 states and 2075 transitions. [2020-09-25 10:07:02,593 INFO L480 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-09-25 10:07:02,593 INFO L276 IsEmpty]: Start isEmpty. Operand 1771 states and 2075 transitions. [2020-09-25 10:07:02,600 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 198 [2020-09-25 10:07:02,600 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 10:07:02,601 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 10:07:02,601 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-25 10:07:02,601 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 10:07:02,601 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 10:07:02,602 INFO L82 PathProgramCache]: Analyzing trace with hash 673687336, now seen corresponding path program 1 times [2020-09-25 10:07:02,602 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 10:07:02,602 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1138469614] [2020-09-25 10:07:02,602 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 10:07:02,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:07:02,673 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:07:02,758 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:07:02,898 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:07:03,537 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:07:04,600 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:07:05,156 FATAL L256 erpolLogProxyWrapper]: Now shrinking...