/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_label52.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-24 18:23:25,698 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-24 18:23:25,702 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-24 18:23:25,749 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-24 18:23:25,750 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-24 18:23:25,760 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-24 18:23:25,762 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-24 18:23:25,766 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-24 18:23:25,768 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-24 18:23:25,772 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-24 18:23:25,773 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-24 18:23:25,774 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-24 18:23:25,774 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-24 18:23:25,777 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-24 18:23:25,780 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-24 18:23:25,782 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-24 18:23:25,784 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-24 18:23:25,785 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-24 18:23:25,786 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-24 18:23:25,794 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-24 18:23:25,796 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-24 18:23:25,797 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-24 18:23:25,798 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-24 18:23:25,799 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-24 18:23:25,803 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-24 18:23:25,803 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-24 18:23:25,803 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-24 18:23:25,807 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-24 18:23:25,807 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-24 18:23:25,808 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-24 18:23:25,808 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-24 18:23:25,809 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-24 18:23:25,810 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-24 18:23:25,811 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-24 18:23:25,813 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-24 18:23:25,813 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-24 18:23:25,814 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-24 18:23:25,814 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-24 18:23:25,814 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-24 18:23:25,815 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-24 18:23:25,817 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-24 18:23:25,818 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 18:23:25,867 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-24 18:23:25,867 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-24 18:23:25,869 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-24 18:23:25,870 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-24 18:23:25,870 INFO L138 SettingsManager]: * Use SBE=true [2020-09-24 18:23:25,870 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-24 18:23:25,870 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-24 18:23:25,871 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-24 18:23:25,871 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-24 18:23:25,871 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-24 18:23:25,872 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-24 18:23:25,872 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-24 18:23:25,873 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-24 18:23:25,873 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-24 18:23:25,873 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-24 18:23:25,874 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-24 18:23:25,874 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-24 18:23:25,874 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-24 18:23:25,874 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-24 18:23:25,874 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-24 18:23:25,875 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-24 18:23:25,875 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-24 18:23:25,875 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-24 18:23:25,875 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-24 18:23:25,875 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-24 18:23:25,876 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-24 18:23:25,876 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-24 18:23:25,876 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-24 18:23:25,876 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-24 18:23:25,876 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 18:23:26,346 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-24 18:23:26,367 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-24 18:23:26,371 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-24 18:23:26,375 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-24 18:23:26,375 INFO L275 PluginConnector]: CDTParser initialized [2020-09-24 18:23:26,376 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem02_label52.c [2020-09-24 18:23:26,474 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/26d8ec1af/d2c1917a6f074e58a2c98e1c9e900abc/FLAGbd4f3bfb3 [2020-09-24 18:23:27,151 INFO L306 CDTParser]: Found 1 translation units. [2020-09-24 18:23:27,152 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem02_label52.c [2020-09-24 18:23:27,166 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/26d8ec1af/d2c1917a6f074e58a2c98e1c9e900abc/FLAGbd4f3bfb3 [2020-09-24 18:23:27,357 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/26d8ec1af/d2c1917a6f074e58a2c98e1c9e900abc [2020-09-24 18:23:27,372 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-24 18:23:27,378 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-24 18:23:27,382 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-24 18:23:27,382 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-24 18:23:27,386 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-24 18:23:27,387 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 06:23:27" (1/1) ... [2020-09-24 18:23:27,393 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3d876c0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 06:23:27, skipping insertion in model container [2020-09-24 18:23:27,394 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 06:23:27" (1/1) ... [2020-09-24 18:23:27,401 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-24 18:23:27,449 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-24 18:23:27,884 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-24 18:23:27,896 INFO L203 MainTranslator]: Completed pre-run [2020-09-24 18:23:28,144 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-24 18:23:28,178 INFO L208 MainTranslator]: Completed translation [2020-09-24 18:23:28,178 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 06:23:28 WrapperNode [2020-09-24 18:23:28,178 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-24 18:23:28,179 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-24 18:23:28,180 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-24 18:23:28,180 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-24 18:23:28,196 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 06:23:28" (1/1) ... [2020-09-24 18:23:28,197 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 06:23:28" (1/1) ... [2020-09-24 18:23:28,216 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 06:23:28" (1/1) ... [2020-09-24 18:23:28,217 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 06:23:28" (1/1) ... [2020-09-24 18:23:28,256 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 06:23:28" (1/1) ... [2020-09-24 18:23:28,275 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 06:23:28" (1/1) ... [2020-09-24 18:23:28,279 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 06:23:28" (1/1) ... [2020-09-24 18:23:28,287 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-24 18:23:28,287 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-24 18:23:28,287 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-24 18:23:28,287 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-24 18:23:28,289 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 06:23:28" (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 18:23:28,362 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-24 18:23:28,362 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-24 18:23:28,362 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-09-24 18:23:28,362 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-24 18:23:28,363 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-09-24 18:23:28,363 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-24 18:23:28,363 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-24 18:23:28,363 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-09-24 18:23:28,363 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-24 18:23:28,364 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-24 18:23:28,364 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-24 18:23:29,786 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-24 18:23:29,787 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-09-24 18:23:29,796 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 06:23:29 BoogieIcfgContainer [2020-09-24 18:23:29,796 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-24 18:23:29,797 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-24 18:23:29,798 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-24 18:23:29,801 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-24 18:23:29,802 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.09 06:23:27" (1/3) ... [2020-09-24 18:23:29,803 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2bb4822a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 06:23:29, skipping insertion in model container [2020-09-24 18:23:29,803 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 06:23:28" (2/3) ... [2020-09-24 18:23:29,804 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2bb4822a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 06:23:29, skipping insertion in model container [2020-09-24 18:23:29,804 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 06:23:29" (3/3) ... [2020-09-24 18:23:29,806 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem02_label52.c [2020-09-24 18:23:29,819 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-24 18:23:29,831 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-24 18:23:29,857 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-24 18:23:29,899 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-24 18:23:29,900 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-24 18:23:29,900 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-24 18:23:29,900 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-24 18:23:29,900 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-24 18:23:29,900 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-24 18:23:29,901 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-24 18:23:29,901 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-24 18:23:29,935 INFO L276 IsEmpty]: Start isEmpty. Operand 527 states. [2020-09-24 18:23:29,954 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2020-09-24 18:23:29,955 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 18:23:29,956 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] [2020-09-24 18:23:29,957 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 18:23:29,965 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 18:23:29,965 INFO L82 PathProgramCache]: Analyzing trace with hash 1349342961, now seen corresponding path program 1 times [2020-09-24 18:23:29,977 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 18:23:29,978 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1087928403] [2020-09-24 18:23:29,978 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 18:23:30,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:23:30,375 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:23:30,619 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:23:31,440 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:23:32,567 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:23:32,660 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:23:32,855 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:23:33,479 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:23:34,057 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:23:34,375 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:23:35,295 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:23:35,295 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 139 [2020-09-24 18:23:35,296 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-09-24 18:23:35,296 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5013 [2020-09-24 18:23:35,299 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:23:35,300 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-24 18:23:35,300 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 20 [2020-09-24 18:23:35,300 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 118 [2020-09-24 18:23:35,300 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-09-24 18:23:35,488 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 18:23:35,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:23:35,513 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:23:35,568 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:23:35,569 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-24 18:23:35,569 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:23:35,569 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 69 [2020-09-24 18:23:35,570 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:23:35,571 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 18:23:35,571 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:23:35,571 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-09-24 18:23:35,571 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 18:23:35,621 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 18:23:35,622 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1087928403] [2020-09-24 18:23:35,625 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 18:23:35,625 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-24 18:23:35,627 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1801244268] [2020-09-24 18:23:35,634 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-24 18:23:35,635 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 18:23:35,652 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-24 18:23:35,653 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-24 18:23:35,656 INFO L87 Difference]: Start difference. First operand 527 states. Second operand 4 states. [2020-09-24 18:23:37,822 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 18:23:37,825 INFO L93 Difference]: Finished difference Result 1206 states and 1652 transitions. [2020-09-24 18:23:37,828 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-24 18:23:37,830 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 130 [2020-09-24 18:23:37,831 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 18:23:37,871 INFO L225 Difference]: With dead ends: 1206 [2020-09-24 18:23:37,871 INFO L226 Difference]: Without dead ends: 628 [2020-09-24 18:23:37,882 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 18:23:37,907 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 628 states. [2020-09-24 18:23:38,008 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 628 to 615. [2020-09-24 18:23:38,012 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 615 states. [2020-09-24 18:23:38,019 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 615 states to 615 states and 751 transitions. [2020-09-24 18:23:38,022 INFO L78 Accepts]: Start accepts. Automaton has 615 states and 751 transitions. Word has length 130 [2020-09-24 18:23:38,025 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 18:23:38,025 INFO L479 AbstractCegarLoop]: Abstraction has 615 states and 751 transitions. [2020-09-24 18:23:38,026 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-24 18:23:38,026 INFO L276 IsEmpty]: Start isEmpty. Operand 615 states and 751 transitions. [2020-09-24 18:23:38,038 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 165 [2020-09-24 18:23:38,038 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 18:23:38,042 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 18:23:38,043 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-24 18:23:38,043 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 18:23:38,043 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 18:23:38,043 INFO L82 PathProgramCache]: Analyzing trace with hash -240509204, now seen corresponding path program 1 times [2020-09-24 18:23:38,044 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 18:23:38,044 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [220272646] [2020-09-24 18:23:38,044 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 18:23:38,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:23:38,132 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:23:38,243 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:23:38,376 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:23:39,425 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:23:41,438 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:23:41,538 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:23:43,109 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:23:43,109 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 175 [2020-09-24 18:23:43,112 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-09-24 18:23:43,113 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5009 [2020-09-24 18:23:43,113 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:23:43,113 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 18:23:43,114 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 57 [2020-09-24 18:23:43,115 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 117 [2020-09-24 18:23:43,119 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 6 [2020-09-24 18:23:43,273 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 18:23:43,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:23:43,285 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:23:43,306 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:23:43,307 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-24 18:23:43,307 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:23:43,307 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 26 [2020-09-24 18:23:43,307 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:23:43,309 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 18:23:43,309 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:23:43,309 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 18:23:43,309 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 18:23:43,337 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-24 18:23:43,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:23:43,360 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:23:43,393 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:23:43,394 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-09-24 18:23:43,394 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:23:43,394 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 40 [2020-09-24 18:23:43,395 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:23:43,395 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 18:23:43,395 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:23:43,395 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 21 [2020-09-24 18:23:43,396 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:23:43,496 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 22 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 18:23:43,496 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [220272646] [2020-09-24 18:23:43,497 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 18:23:43,498 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-09-24 18:23:43,498 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1145780004] [2020-09-24 18:23:43,502 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-24 18:23:43,503 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 18:23:43,503 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-24 18:23:43,503 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-09-24 18:23:43,503 INFO L87 Difference]: Start difference. First operand 615 states and 751 transitions. Second operand 6 states. [2020-09-24 18:23:46,083 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 18:23:46,084 INFO L93 Difference]: Finished difference Result 1902 states and 2495 transitions. [2020-09-24 18:23:46,084 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-09-24 18:23:46,085 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 164 [2020-09-24 18:23:46,086 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 18:23:46,094 INFO L225 Difference]: With dead ends: 1902 [2020-09-24 18:23:46,094 INFO L226 Difference]: Without dead ends: 1309 [2020-09-24 18:23:46,098 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-09-24 18:23:46,100 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1309 states. [2020-09-24 18:23:46,150 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1309 to 1226. [2020-09-24 18:23:46,151 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1226 states. [2020-09-24 18:23:46,157 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1226 states to 1226 states and 1541 transitions. [2020-09-24 18:23:46,158 INFO L78 Accepts]: Start accepts. Automaton has 1226 states and 1541 transitions. Word has length 164 [2020-09-24 18:23:46,158 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 18:23:46,159 INFO L479 AbstractCegarLoop]: Abstraction has 1226 states and 1541 transitions. [2020-09-24 18:23:46,159 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-09-24 18:23:46,159 INFO L276 IsEmpty]: Start isEmpty. Operand 1226 states and 1541 transitions. [2020-09-24 18:23:46,164 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 198 [2020-09-24 18:23:46,164 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 18:23:46,165 INFO L422 BasicCegarLoop]: trace histogram [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, 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] [2020-09-24 18:23:46,165 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-24 18:23:46,165 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 18:23:46,166 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 18:23:46,166 INFO L82 PathProgramCache]: Analyzing trace with hash 887772483, now seen corresponding path program 1 times [2020-09-24 18:23:46,166 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 18:23:46,166 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [791785576] [2020-09-24 18:23:46,166 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 18:23:46,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:23:46,209 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:23:46,262 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:23:46,501 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:23:46,931 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:23:51,209 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:23:51,210 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 210 [2020-09-24 18:23:51,210 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-24 18:23:51,211 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5019 [2020-09-24 18:23:51,211 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:23:51,211 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 18:23:51,212 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 62 [2020-09-24 18:23:51,212 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 29 [2020-09-24 18:23:51,212 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 18:23:51,364 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 18:23:51,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:23:51,372 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:23:51,390 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:23:51,390 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-24 18:23:51,390 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:23:51,391 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-09-24 18:23:51,391 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:23:51,391 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 18:23:51,391 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:23:51,391 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 18:23:51,392 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:23:51,408 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-24 18:23:51,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:23:51,423 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:23:51,456 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:23:51,457 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-09-24 18:23:51,457 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:23:51,457 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 39 [2020-09-24 18:23:51,457 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:23:51,458 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 18:23:51,458 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:23:51,458 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-09-24 18:23:51,458 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:23:51,481 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2020-09-24 18:23:51,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:23:51,498 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:23:51,565 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:23:51,565 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-24 18:23:51,566 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:23:51,566 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 74 [2020-09-24 18:23:51,566 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:23:51,566 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 18:23:51,567 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-24 18:23:51,567 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-09-24 18:23:51,567 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:23:51,634 INFO L134 CoverageAnalysis]: Checked inductivity of 74 backedges. 71 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-09-24 18:23:51,635 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [791785576] [2020-09-24 18:23:51,635 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 18:23:51,636 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-09-24 18:23:51,636 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1520227857] [2020-09-24 18:23:51,637 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-24 18:23:51,637 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 18:23:51,637 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-24 18:23:51,638 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-09-24 18:23:51,638 INFO L87 Difference]: Start difference. First operand 1226 states and 1541 transitions. Second operand 7 states. [2020-09-24 18:23:54,663 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 18:23:54,664 INFO L93 Difference]: Finished difference Result 3681 states and 5007 transitions. [2020-09-24 18:23:54,665 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-09-24 18:23:54,665 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 197 [2020-09-24 18:23:54,666 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 18:23:54,690 INFO L225 Difference]: With dead ends: 3681 [2020-09-24 18:23:54,690 INFO L226 Difference]: Without dead ends: 2122 [2020-09-24 18:23:54,700 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 18:23:54,703 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2122 states. [2020-09-24 18:23:54,790 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2122 to 1820. [2020-09-24 18:23:54,790 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1820 states. [2020-09-24 18:23:54,801 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1820 states to 1820 states and 2244 transitions. [2020-09-24 18:23:54,801 INFO L78 Accepts]: Start accepts. Automaton has 1820 states and 2244 transitions. Word has length 197 [2020-09-24 18:23:54,802 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 18:23:54,802 INFO L479 AbstractCegarLoop]: Abstraction has 1820 states and 2244 transitions. [2020-09-24 18:23:54,802 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-24 18:23:54,802 INFO L276 IsEmpty]: Start isEmpty. Operand 1820 states and 2244 transitions. [2020-09-24 18:23:54,811 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 229 [2020-09-24 18:23:54,811 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 18:23:54,844 INFO L422 BasicCegarLoop]: trace histogram [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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-09-24 18:23:54,844 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-24 18:23:54,844 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 18:23:54,845 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 18:23:54,845 INFO L82 PathProgramCache]: Analyzing trace with hash -360122193, now seen corresponding path program 1 times [2020-09-24 18:23:54,845 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 18:23:54,845 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [339621100] [2020-09-24 18:23:54,846 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 18:23:54,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:23:54,932 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:23:55,024 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:23:55,126 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:23:55,748 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:23:56,152 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:23:56,480 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:23:59,930 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:23:59,931 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 241 [2020-09-24 18:23:59,931 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-09-24 18:23:59,931 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5036 [2020-09-24 18:23:59,931 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:23:59,931 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 18:23:59,931 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 91 [2020-09-24 18:23:59,931 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 31 [2020-09-24 18:23:59,932 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:24:00,005 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 18:24:00,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:24:00,011 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:24:00,020 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:24:00,021 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-24 18:24:00,021 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:24:00,022 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-09-24 18:24:00,022 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:24:00,022 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 18:24:00,023 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:24:00,023 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 18:24:00,023 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 18:24:00,047 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-24 18:24:00,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:24:00,076 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:24:00,145 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:24:00,146 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 65 [2020-09-24 18:24:00,146 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:24:00,146 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 82 [2020-09-24 18:24:00,146 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:24:00,147 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 18:24:00,147 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:24:00,147 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 55 [2020-09-24 18:24:00,147 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:24:00,203 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2020-09-24 18:24:00,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:24:00,217 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:24:00,275 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:24:00,275 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-24 18:24:00,276 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:24:00,276 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 63 [2020-09-24 18:24:00,276 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:24:00,277 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 18:24:00,277 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-24 18:24:00,277 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-09-24 18:24:00,278 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 18:24:00,393 INFO L134 CoverageAnalysis]: Checked inductivity of 102 backedges. 99 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-09-24 18:24:00,395 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [339621100] [2020-09-24 18:24:00,395 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 18:24:00,395 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-09-24 18:24:00,395 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1902672837] [2020-09-24 18:24:00,396 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-24 18:24:00,396 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 18:24:00,396 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-24 18:24:00,397 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-09-24 18:24:00,398 INFO L87 Difference]: Start difference. First operand 1820 states and 2244 transitions. Second operand 7 states. [2020-09-24 18:24:02,906 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 18:24:02,906 INFO L93 Difference]: Finished difference Result 4067 states and 5065 transitions. [2020-09-24 18:24:02,906 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-09-24 18:24:02,907 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 228 [2020-09-24 18:24:02,907 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 18:24:02,917 INFO L225 Difference]: With dead ends: 4067 [2020-09-24 18:24:02,917 INFO L226 Difference]: Without dead ends: 1764 [2020-09-24 18:24:02,925 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 9 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=37, Invalid=73, Unknown=0, NotChecked=0, Total=110 [2020-09-24 18:24:02,927 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1764 states. [2020-09-24 18:24:02,982 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1764 to 1764. [2020-09-24 18:24:02,983 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1764 states. [2020-09-24 18:24:02,992 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1764 states to 1764 states and 2135 transitions. [2020-09-24 18:24:02,992 INFO L78 Accepts]: Start accepts. Automaton has 1764 states and 2135 transitions. Word has length 228 [2020-09-24 18:24:02,992 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 18:24:02,992 INFO L479 AbstractCegarLoop]: Abstraction has 1764 states and 2135 transitions. [2020-09-24 18:24:02,993 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-24 18:24:02,993 INFO L276 IsEmpty]: Start isEmpty. Operand 1764 states and 2135 transitions. [2020-09-24 18:24:03,003 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 246 [2020-09-24 18:24:03,003 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 18:24:03,004 INFO L422 BasicCegarLoop]: trace histogram [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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-09-24 18:24:03,004 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-24 18:24:03,004 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 18:24:03,004 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 18:24:03,005 INFO L82 PathProgramCache]: Analyzing trace with hash 102848156, now seen corresponding path program 1 times [2020-09-24 18:24:03,005 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 18:24:03,005 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [376648065] [2020-09-24 18:24:03,005 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 18:24:03,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:24:03,070 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:24:03,156 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:24:03,497 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:24:03,666 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:24:04,170 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:24:07,271 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:24:08,049 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:24:08,050 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 258 [2020-09-24 18:24:08,050 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-09-24 18:24:08,051 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5007 [2020-09-24 18:24:08,051 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:24:08,051 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-24 18:24:08,051 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-09-24 18:24:08,052 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 90 [2020-09-24 18:24:08,052 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 18:24:08,169 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 18:24:08,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:24:08,180 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:24:08,196 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:24:08,197 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-24 18:24:08,197 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:24:08,197 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-09-24 18:24:08,198 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:24:08,198 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 18:24:08,199 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:24:08,199 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-09-24 18:24:08,199 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 18:24:08,230 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-24 18:24:08,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:24:08,281 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:24:08,499 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:24:08,499 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 82 [2020-09-24 18:24:08,501 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:24:08,502 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 241 [2020-09-24 18:24:08,502 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:24:08,502 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 18:24:08,503 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-24 18:24:08,503 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 81 [2020-09-24 18:24:08,504 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 18:24:08,570 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2020-09-24 18:24:08,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:24:08,580 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:24:08,598 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:24:08,599 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-24 18:24:08,599 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:24:08,599 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-09-24 18:24:08,599 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:24:08,600 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 18:24:08,600 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 22 [2020-09-24 18:24:08,600 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 18:24:08,600 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:24:08,703 INFO L134 CoverageAnalysis]: Checked inductivity of 123 backedges. 98 proven. 14 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2020-09-24 18:24:08,703 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [376648065] [2020-09-24 18:24:08,703 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 18:24:08,704 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-09-24 18:24:08,704 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1053728856] [2020-09-24 18:24:08,704 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-24 18:24:08,705 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 18:24:08,705 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-24 18:24:08,705 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-09-24 18:24:08,705 INFO L87 Difference]: Start difference. First operand 1764 states and 2135 transitions. Second operand 7 states. [2020-09-24 18:24:10,547 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 18:24:10,548 INFO L93 Difference]: Finished difference Result 3703 states and 4550 transitions. [2020-09-24 18:24:10,548 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-09-24 18:24:10,548 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 245 [2020-09-24 18:24:10,549 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 18:24:10,559 INFO L225 Difference]: With dead ends: 3703 [2020-09-24 18:24:10,559 INFO L226 Difference]: Without dead ends: 1971 [2020-09-24 18:24:10,566 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 10 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2020-09-24 18:24:10,568 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1971 states. [2020-09-24 18:24:10,614 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1971 to 1939. [2020-09-24 18:24:10,614 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1939 states. [2020-09-24 18:24:10,622 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1939 states to 1939 states and 2304 transitions. [2020-09-24 18:24:10,623 INFO L78 Accepts]: Start accepts. Automaton has 1939 states and 2304 transitions. Word has length 245 [2020-09-24 18:24:10,623 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 18:24:10,623 INFO L479 AbstractCegarLoop]: Abstraction has 1939 states and 2304 transitions. [2020-09-24 18:24:10,623 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-24 18:24:10,624 INFO L276 IsEmpty]: Start isEmpty. Operand 1939 states and 2304 transitions. [2020-09-24 18:24:10,630 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 257 [2020-09-24 18:24:10,631 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 18:24:10,631 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 18:24:10,631 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-24 18:24:10,632 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 18:24:10,632 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 18:24:10,632 INFO L82 PathProgramCache]: Analyzing trace with hash -2072894464, now seen corresponding path program 1 times [2020-09-24 18:24:10,632 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 18:24:10,633 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1764465523] [2020-09-24 18:24:10,633 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 18:24:10,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:24:10,674 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:24:10,757 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:24:11,026 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:24:11,486 FATAL L256 erpolLogProxyWrapper]: Now shrinking...