/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=SMALLEST --traceabstraction.additional.smt.options log-additional-information=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem02_label55.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-24 18:23:32,006 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-24 18:23:32,011 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-24 18:23:32,055 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-24 18:23:32,056 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-24 18:23:32,067 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-24 18:23:32,069 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-24 18:23:32,070 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-24 18:23:32,072 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-24 18:23:32,076 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-24 18:23:32,077 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-24 18:23:32,079 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-24 18:23:32,079 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-24 18:23:32,082 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-24 18:23:32,083 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-24 18:23:32,084 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-24 18:23:32,087 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-24 18:23:32,089 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-24 18:23:32,091 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-24 18:23:32,097 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-24 18:23:32,101 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-24 18:23:32,103 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-24 18:23:32,105 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-24 18:23:32,106 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-24 18:23:32,111 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-24 18:23:32,111 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-24 18:23:32,111 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-24 18:23:32,115 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-24 18:23:32,115 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-24 18:23:32,116 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-24 18:23:32,117 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-24 18:23:32,117 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-24 18:23:32,118 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-24 18:23:32,119 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-24 18:23:32,121 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-24 18:23:32,121 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-24 18:23:32,122 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-24 18:23:32,122 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-24 18:23:32,122 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-24 18:23:32,123 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-24 18:23:32,125 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-24 18:23:32,126 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 [2020-09-24 18:23:32,173 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-24 18:23:32,173 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-24 18:23:32,175 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-24 18:23:32,175 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-24 18:23:32,176 INFO L138 SettingsManager]: * Use SBE=true [2020-09-24 18:23:32,176 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-24 18:23:32,176 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-24 18:23:32,176 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-24 18:23:32,177 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-24 18:23:32,177 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-24 18:23:32,178 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-24 18:23:32,178 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-24 18:23:32,178 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-24 18:23:32,179 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-24 18:23:32,179 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-24 18:23:32,179 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-24 18:23:32,179 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-24 18:23:32,180 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-24 18:23:32,180 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-24 18:23:32,180 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-24 18:23:32,180 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-24 18:23:32,180 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-24 18:23:32,181 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-24 18:23:32,181 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-24 18:23:32,181 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-24 18:23:32,181 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-24 18:23:32,181 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-24 18:23:32,182 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-24 18:23:32,182 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-24 18:23:32,182 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=SMALLEST;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=SMALLEST;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=SMALLEST;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=SMALLEST;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=SMALLEST;log-additional-information=true; [2020-09-24 18:23:32,676 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-24 18:23:32,702 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-24 18:23:32,707 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-24 18:23:32,709 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-24 18:23:32,710 INFO L275 PluginConnector]: CDTParser initialized [2020-09-24 18:23:32,711 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem02_label55.c [2020-09-24 18:23:32,811 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/5714d3575/fe8548fdac314114b33de00020e0a3ed/FLAG3dd1fc308 [2020-09-24 18:23:33,467 INFO L306 CDTParser]: Found 1 translation units. [2020-09-24 18:23:33,468 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem02_label55.c [2020-09-24 18:23:33,484 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/5714d3575/fe8548fdac314114b33de00020e0a3ed/FLAG3dd1fc308 [2020-09-24 18:23:33,717 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/5714d3575/fe8548fdac314114b33de00020e0a3ed [2020-09-24 18:23:33,731 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-24 18:23:33,736 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-24 18:23:33,739 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-24 18:23:33,739 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-24 18:23:33,743 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-24 18:23:33,745 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 06:23:33" (1/1) ... [2020-09-24 18:23:33,750 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@d198e76 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 06:23:33, skipping insertion in model container [2020-09-24 18:23:33,751 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 06:23:33" (1/1) ... [2020-09-24 18:23:33,762 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-24 18:23:33,833 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-24 18:23:34,372 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-24 18:23:34,379 INFO L203 MainTranslator]: Completed pre-run [2020-09-24 18:23:34,577 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-24 18:23:34,603 INFO L208 MainTranslator]: Completed translation [2020-09-24 18:23:34,603 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 06:23:34 WrapperNode [2020-09-24 18:23:34,604 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-24 18:23:34,605 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-24 18:23:34,605 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-24 18:23:34,605 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-24 18:23:34,619 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 06:23:34" (1/1) ... [2020-09-24 18:23:34,619 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 06:23:34" (1/1) ... [2020-09-24 18:23:34,638 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 06:23:34" (1/1) ... [2020-09-24 18:23:34,638 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 06:23:34" (1/1) ... [2020-09-24 18:23:34,678 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 06:23:34" (1/1) ... [2020-09-24 18:23:34,697 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 06:23:34" (1/1) ... [2020-09-24 18:23:34,702 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 06:23:34" (1/1) ... [2020-09-24 18:23:34,709 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-24 18:23:34,709 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-24 18:23:34,709 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-24 18:23:34,710 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-24 18:23:34,711 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 06:23:34" (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 [2020-09-24 18:23:34,783 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-24 18:23:34,783 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-24 18:23:34,784 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-09-24 18:23:34,784 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-24 18:23:34,784 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-09-24 18:23:34,784 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-24 18:23:34,784 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-24 18:23:34,784 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-09-24 18:23:34,785 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-24 18:23:34,785 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-24 18:23:34,785 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-24 18:23:36,105 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-24 18:23:36,106 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-09-24 18:23:36,116 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 06:23:36 BoogieIcfgContainer [2020-09-24 18:23:36,116 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-24 18:23:36,117 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-24 18:23:36,118 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-24 18:23:36,121 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-24 18:23:36,122 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.09 06:23:33" (1/3) ... [2020-09-24 18:23:36,123 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@440552fd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 06:23:36, skipping insertion in model container [2020-09-24 18:23:36,123 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 06:23:34" (2/3) ... [2020-09-24 18:23:36,124 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@440552fd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 06:23:36, skipping insertion in model container [2020-09-24 18:23:36,124 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 06:23:36" (3/3) ... [2020-09-24 18:23:36,126 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem02_label55.c [2020-09-24 18:23:36,138 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-24 18:23:36,151 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-24 18:23:36,175 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-24 18:23:36,210 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-24 18:23:36,211 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-24 18:23:36,211 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-24 18:23:36,211 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-24 18:23:36,211 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-24 18:23:36,211 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-24 18:23:36,212 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-24 18:23:36,212 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-24 18:23:36,246 INFO L276 IsEmpty]: Start isEmpty. Operand 527 states. [2020-09-24 18:23:36,267 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2020-09-24 18:23:36,268 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 18:23:36,271 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] [2020-09-24 18:23:36,272 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 18:23:36,278 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 18:23:36,284 INFO L82 PathProgramCache]: Analyzing trace with hash -1120036286, now seen corresponding path program 1 times [2020-09-24 18:23:36,296 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 18:23:36,297 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [454804373] [2020-09-24 18:23:36,297 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 18:23:36,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:23:36,671 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:23:36,929 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:23:37,028 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:23:37,145 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:23:38,952 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:23:39,623 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:23:40,682 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:23:40,764 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:23:41,115 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:23:41,256 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:23:41,574 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:23:41,574 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 140 [2020-09-24 18:23:41,575 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 10 [2020-09-24 18:23:41,575 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5014 [2020-09-24 18:23:41,578 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:23:41,579 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-24 18:23:41,579 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 17 [2020-09-24 18:23:41,579 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 122 [2020-09-24 18:23:41,580 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-09-24 18:23:41,796 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 18:23:41,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:23:41,809 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:23:41,836 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:23:41,836 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-24 18:23:41,837 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:23:41,837 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 31 [2020-09-24 18:23:41,838 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:23:41,838 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 18:23:41,838 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:23:41,839 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-09-24 18:23:41,839 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 18:23:41,911 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 18:23:41,912 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [454804373] [2020-09-24 18:23:41,915 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 18:23:41,915 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-24 18:23:41,916 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [144682501] [2020-09-24 18:23:41,924 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-24 18:23:41,925 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 18:23:41,950 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-24 18:23:41,952 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-24 18:23:41,955 INFO L87 Difference]: Start difference. First operand 527 states. Second operand 4 states. [2020-09-24 18:23:44,295 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 18:23:44,296 INFO L93 Difference]: Finished difference Result 1396 states and 1850 transitions. [2020-09-24 18:23:44,296 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-24 18:23:44,298 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 131 [2020-09-24 18:23:44,299 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 18:23:44,330 INFO L225 Difference]: With dead ends: 1396 [2020-09-24 18:23:44,331 INFO L226 Difference]: Without dead ends: 788 [2020-09-24 18:23:44,340 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 [2020-09-24 18:23:44,364 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 788 states. [2020-09-24 18:23:44,443 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 788 to 665. [2020-09-24 18:23:44,445 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 665 states. [2020-09-24 18:23:44,449 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 665 states to 665 states and 813 transitions. [2020-09-24 18:23:44,451 INFO L78 Accepts]: Start accepts. Automaton has 665 states and 813 transitions. Word has length 131 [2020-09-24 18:23:44,452 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 18:23:44,453 INFO L479 AbstractCegarLoop]: Abstraction has 665 states and 813 transitions. [2020-09-24 18:23:44,453 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-24 18:23:44,453 INFO L276 IsEmpty]: Start isEmpty. Operand 665 states and 813 transitions. [2020-09-24 18:23:44,463 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 150 [2020-09-24 18:23:44,463 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 18:23:44,463 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-09-24 18:23:44,464 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-24 18:23:44,464 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 18:23:44,464 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 18:23:44,465 INFO L82 PathProgramCache]: Analyzing trace with hash 1110069102, now seen corresponding path program 1 times [2020-09-24 18:23:44,465 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 18:23:44,465 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1517914848] [2020-09-24 18:23:44,466 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 18:23:44,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:23:44,545 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:23:44,625 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:23:44,753 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:23:45,184 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:23:45,268 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:23:45,789 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:23:47,506 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:23:47,862 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:23:48,586 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:23:48,950 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:23:49,542 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:23:49,543 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 160 [2020-09-24 18:23:49,544 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 10 [2020-09-24 18:23:49,551 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5028 [2020-09-24 18:23:49,552 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:23:49,552 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 18:23:49,552 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 40 [2020-09-24 18:23:49,552 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 119 [2020-09-24 18:23:49,554 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 18:23:49,717 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 18:23:49,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:23:49,723 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:23:49,733 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:23:49,734 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-24 18:23:49,734 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:23:49,734 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-09-24 18:23:49,734 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:23:49,735 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 18:23:49,735 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:23:49,735 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 18:23:49,735 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:23:49,756 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-24 18:23:49,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:23:49,761 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:23:49,775 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:23:49,775 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-09-24 18:23:49,776 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:23:49,776 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-09-24 18:23:49,776 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:23:49,776 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 18:23:49,776 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:23:49,777 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-09-24 18:23:49,777 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:23:49,807 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 8 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 18:23:49,808 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1517914848] [2020-09-24 18:23:49,808 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 18:23:49,808 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-09-24 18:23:49,808 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [848335329] [2020-09-24 18:23:49,811 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-24 18:23:49,811 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 18:23:49,811 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-24 18:23:49,811 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-24 18:23:49,812 INFO L87 Difference]: Start difference. First operand 665 states and 813 transitions. Second operand 5 states. [2020-09-24 18:23:51,563 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 18:23:51,564 INFO L93 Difference]: Finished difference Result 1624 states and 2084 transitions. [2020-09-24 18:23:51,565 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-24 18:23:51,565 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 149 [2020-09-24 18:23:51,566 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 18:23:51,573 INFO L225 Difference]: With dead ends: 1624 [2020-09-24 18:23:51,573 INFO L226 Difference]: Without dead ends: 981 [2020-09-24 18:23:51,577 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-09-24 18:23:51,579 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 981 states. [2020-09-24 18:23:51,615 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 981 to 969. [2020-09-24 18:23:51,616 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 969 states. [2020-09-24 18:23:51,621 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 969 states to 969 states and 1223 transitions. [2020-09-24 18:23:51,621 INFO L78 Accepts]: Start accepts. Automaton has 969 states and 1223 transitions. Word has length 149 [2020-09-24 18:23:51,622 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 18:23:51,622 INFO L479 AbstractCegarLoop]: Abstraction has 969 states and 1223 transitions. [2020-09-24 18:23:51,622 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-24 18:23:51,623 INFO L276 IsEmpty]: Start isEmpty. Operand 969 states and 1223 transitions. [2020-09-24 18:23:51,657 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 154 [2020-09-24 18:23:51,658 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 18:23:51,658 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] [2020-09-24 18:23:51,658 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-24 18:23:51,659 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 18:23:51,659 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 18:23:51,659 INFO L82 PathProgramCache]: Analyzing trace with hash 2022394144, now seen corresponding path program 1 times [2020-09-24 18:23:51,659 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 18:23:51,659 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1708620516] [2020-09-24 18:23:51,660 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 18:23:51,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:23:51,742 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:23:51,884 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:23:52,049 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:23:52,405 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:23:53,591 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:23:54,234 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:23:54,876 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:23:55,137 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:23:55,245 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:23:55,315 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:23:56,710 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:23:56,711 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 164 [2020-09-24 18:23:56,711 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 10 [2020-09-24 18:23:56,711 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-09-24 18:23:56,712 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:23:56,712 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 18:23:56,712 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 45 [2020-09-24 18:23:56,712 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 118 [2020-09-24 18:23:56,712 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:23:56,831 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 18:23:56,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:23:56,841 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:23:56,852 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:23:56,853 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-24 18:23:56,853 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:23:56,854 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-09-24 18:23:56,854 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:23:56,854 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 18:23:56,855 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:23:56,855 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 18:23:56,855 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 18:23:56,879 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-24 18:23:56,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:23:56,891 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:23:56,908 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:23:56,909 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-24 18:23:56,909 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:23:56,910 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-09-24 18:23:56,910 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:23:56,910 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 18:23:56,911 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:23:56,911 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-24 18:23:56,911 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 18:23:56,982 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 13 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 18:23:56,983 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1708620516] [2020-09-24 18:23:56,983 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 18:23:56,983 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-09-24 18:23:56,984 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [988532095] [2020-09-24 18:23:56,985 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-24 18:23:56,985 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 18:23:56,986 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-24 18:23:56,986 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-24 18:23:56,986 INFO L87 Difference]: Start difference. First operand 969 states and 1223 transitions. Second operand 5 states. [2020-09-24 18:23:58,812 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 18:23:58,812 INFO L93 Difference]: Finished difference Result 2249 states and 2932 transitions. [2020-09-24 18:23:58,814 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-24 18:23:58,814 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 153 [2020-09-24 18:23:58,816 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 18:23:58,827 INFO L225 Difference]: With dead ends: 2249 [2020-09-24 18:23:58,827 INFO L226 Difference]: Without dead ends: 1302 [2020-09-24 18:23:58,832 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-09-24 18:23:58,834 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1302 states. [2020-09-24 18:23:58,867 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1302 to 1273. [2020-09-24 18:23:58,867 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1273 states. [2020-09-24 18:23:58,874 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1273 states to 1273 states and 1570 transitions. [2020-09-24 18:23:58,874 INFO L78 Accepts]: Start accepts. Automaton has 1273 states and 1570 transitions. Word has length 153 [2020-09-24 18:23:58,875 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 18:23:58,875 INFO L479 AbstractCegarLoop]: Abstraction has 1273 states and 1570 transitions. [2020-09-24 18:23:58,875 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-24 18:23:58,876 INFO L276 IsEmpty]: Start isEmpty. Operand 1273 states and 1570 transitions. [2020-09-24 18:23:58,881 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 167 [2020-09-24 18:23:58,882 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 18:23:58,882 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 18:23:58,882 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-24 18:23:58,883 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 18:23:58,883 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 18:23:58,883 INFO L82 PathProgramCache]: Analyzing trace with hash -1226984387, now seen corresponding path program 1 times [2020-09-24 18:23:58,884 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 18:23:58,884 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1658270268] [2020-09-24 18:23:58,884 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 18:23:58,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:23:58,924 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:23:58,969 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:23:59,032 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:23:59,282 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:23:59,422 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:24:03,918 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:24:03,918 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 179 [2020-09-24 18:24:03,919 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-09-24 18:24:03,919 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5013 [2020-09-24 18:24:03,919 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:24:03,919 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 18:24:03,919 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 41 [2020-09-24 18:24:03,920 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-09-24 18:24:03,920 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:24:04,006 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 18:24:04,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:24:04,013 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:24:04,024 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:24:04,024 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-24 18:24:04,024 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:24:04,024 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-09-24 18:24:04,025 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:24:04,025 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 18:24:04,025 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:24:04,025 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 18:24:04,025 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:24:04,049 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-24 18:24:04,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:24:04,056 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:24:04,069 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:24:04,070 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-09-24 18:24:04,070 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:24:04,070 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-09-24 18:24:04,070 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:24:04,070 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 18:24:04,071 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:24:04,071 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-09-24 18:24:04,071 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:24:04,075 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2020-09-24 18:24:04,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:24:04,082 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:24:04,110 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:24:04,111 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-09-24 18:24:04,111 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:24:04,112 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 31 [2020-09-24 18:24:04,112 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:24:04,112 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 18:24:04,113 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-24 18:24:04,113 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-09-24 18:24:04,113 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 18:24:04,191 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 30 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-09-24 18:24:04,192 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1658270268] [2020-09-24 18:24:04,193 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 18:24:04,193 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-09-24 18:24:04,193 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1283407152] [2020-09-24 18:24:04,194 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-24 18:24:04,194 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 18:24:04,195 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-24 18:24:04,196 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-09-24 18:24:04,196 INFO L87 Difference]: Start difference. First operand 1273 states and 1570 transitions. Second operand 7 states. [2020-09-24 18:24:07,233 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 18:24:07,233 INFO L93 Difference]: Finished difference Result 3784 states and 5110 transitions. [2020-09-24 18:24:07,234 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-09-24 18:24:07,234 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 166 [2020-09-24 18:24:07,234 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 18:24:07,257 INFO L225 Difference]: With dead ends: 3784 [2020-09-24 18:24:07,257 INFO L226 Difference]: Without dead ends: 2202 [2020-09-24 18:24:07,269 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2020-09-24 18:24:07,272 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2202 states. [2020-09-24 18:24:07,359 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2202 to 1888. [2020-09-24 18:24:07,359 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1888 states. [2020-09-24 18:24:07,367 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1888 states to 1888 states and 2331 transitions. [2020-09-24 18:24:07,368 INFO L78 Accepts]: Start accepts. Automaton has 1888 states and 2331 transitions. Word has length 166 [2020-09-24 18:24:07,368 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 18:24:07,368 INFO L479 AbstractCegarLoop]: Abstraction has 1888 states and 2331 transitions. [2020-09-24 18:24:07,369 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-24 18:24:07,369 INFO L276 IsEmpty]: Start isEmpty. Operand 1888 states and 2331 transitions. [2020-09-24 18:24:07,377 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 167 [2020-09-24 18:24:07,377 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 18:24:07,377 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 18:24:07,378 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-24 18:24:07,378 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 18:24:07,378 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 18:24:07,378 INFO L82 PathProgramCache]: Analyzing trace with hash 793940622, now seen corresponding path program 1 times [2020-09-24 18:24:07,378 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 18:24:07,379 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [358402216] [2020-09-24 18:24:07,379 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 18:24:07,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:24:07,446 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:24:07,508 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:24:07,665 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:24:07,905 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:24:08,016 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:24:09,859 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:24:10,094 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:24:12,419 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:24:12,419 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 177 [2020-09-24 18:24:12,419 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-09-24 18:24:12,419 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5004 [2020-09-24 18:24:12,419 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:24:12,420 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 18:24:12,420 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 57 [2020-09-24 18:24:12,420 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 119 [2020-09-24 18:24:12,420 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:24:12,511 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 18:24:12,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:24:12,516 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:24:12,525 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:24:12,525 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-24 18:24:12,525 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:24:12,526 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-09-24 18:24:12,526 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:24:12,526 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 18:24:12,526 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:24:12,526 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 18:24:12,526 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:24:12,545 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-24 18:24:12,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:24:12,557 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:24:12,573 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:24:12,573 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 31 [2020-09-24 18:24:12,573 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:24:12,574 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-09-24 18:24:12,574 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:24:12,574 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 18:24:12,574 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:24:12,575 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 21 [2020-09-24 18:24:12,575 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:24:12,604 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 24 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 18:24:12,604 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [358402216] [2020-09-24 18:24:12,604 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 18:24:12,604 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-09-24 18:24:12,605 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1123605926] [2020-09-24 18:24:12,605 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-24 18:24:12,605 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 18:24:12,606 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-24 18:24:12,606 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-24 18:24:12,606 INFO L87 Difference]: Start difference. First operand 1888 states and 2331 transitions. Second operand 5 states. [2020-09-24 18:24:14,435 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 18:24:14,435 INFO L93 Difference]: Finished difference Result 4662 states and 5921 transitions. [2020-09-24 18:24:14,435 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-24 18:24:14,436 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 166 [2020-09-24 18:24:14,436 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 18:24:14,450 INFO L225 Difference]: With dead ends: 4662 [2020-09-24 18:24:14,450 INFO L226 Difference]: Without dead ends: 2806 [2020-09-24 18:24:14,458 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-09-24 18:24:14,461 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2806 states. [2020-09-24 18:24:14,522 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2806 to 2348. [2020-09-24 18:24:14,522 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2348 states. [2020-09-24 18:24:14,531 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2348 states to 2348 states and 2922 transitions. [2020-09-24 18:24:14,532 INFO L78 Accepts]: Start accepts. Automaton has 2348 states and 2922 transitions. Word has length 166 [2020-09-24 18:24:14,532 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 18:24:14,532 INFO L479 AbstractCegarLoop]: Abstraction has 2348 states and 2922 transitions. [2020-09-24 18:24:14,532 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-24 18:24:14,533 INFO L276 IsEmpty]: Start isEmpty. Operand 2348 states and 2922 transitions. [2020-09-24 18:24:14,547 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 220 [2020-09-24 18:24:14,547 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 18:24:14,547 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 18:24:14,548 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-24 18:24:14,548 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 18:24:14,548 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 18:24:14,548 INFO L82 PathProgramCache]: Analyzing trace with hash -2022116309, now seen corresponding path program 1 times [2020-09-24 18:24:14,549 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 18:24:14,549 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1019525631] [2020-09-24 18:24:14,549 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 18:24:14,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:24:14,612 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:24:14,690 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:24:15,104 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:24:15,768 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:24:17,879 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:24:19,586 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:24:19,586 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 232 [2020-09-24 18:24:19,586 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-09-24 18:24:19,587 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-09-24 18:24:19,587 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:24:19,587 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 18:24:19,587 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 67 [2020-09-24 18:24:19,587 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 46 [2020-09-24 18:24:19,588 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:24:19,686 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 18:24:19,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:24:19,691 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:24:19,701 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:24:19,702 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-24 18:24:19,702 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:24:19,702 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-09-24 18:24:19,702 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:24:19,703 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 18:24:19,703 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:24:19,703 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 18:24:19,703 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:24:19,719 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-24 18:24:19,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:24:19,733 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:24:19,765 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:24:19,765 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 39 [2020-09-24 18:24:19,765 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:24:19,765 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 38 [2020-09-24 18:24:19,765 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:24:19,766 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 18:24:19,766 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:24:19,766 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 31 [2020-09-24 18:24:19,766 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:24:19,774 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2020-09-24 18:24:19,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:24:19,788 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:24:19,852 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:24:19,853 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 41 [2020-09-24 18:24:19,853 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:24:19,853 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 70 [2020-09-24 18:24:19,853 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:24:19,854 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 18:24:19,854 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-24 18:24:19,854 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 40 [2020-09-24 18:24:19,854 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:24:19,908 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 109 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-09-24 18:24:19,908 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1019525631] [2020-09-24 18:24:19,908 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 18:24:19,909 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-09-24 18:24:19,910 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1510278352] [2020-09-24 18:24:19,910 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-24 18:24:19,910 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 18:24:19,910 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-24 18:24:19,910 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-09-24 18:24:19,911 INFO L87 Difference]: Start difference. First operand 2348 states and 2922 transitions. Second operand 7 states.