/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SingleStatement --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=WIDESTAMONGSMALL --traceabstraction.additional.smt.options tolerance=0.4 --traceabstraction.additional.smt.options log-additional-information=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem01_label35.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-25 05:33:45,972 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 05:33:45,975 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 05:33:46,001 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 05:33:46,001 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 05:33:46,003 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 05:33:46,004 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 05:33:46,006 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 05:33:46,007 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 05:33:46,008 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 05:33:46,009 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 05:33:46,011 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 05:33:46,011 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 05:33:46,012 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 05:33:46,013 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 05:33:46,015 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 05:33:46,016 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 05:33:46,017 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 05:33:46,019 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 05:33:46,020 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 05:33:46,022 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 05:33:46,023 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 05:33:46,025 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 05:33:46,026 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 05:33:46,028 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 05:33:46,028 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 05:33:46,029 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 05:33:46,030 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 05:33:46,030 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 05:33:46,031 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 05:33:46,032 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 05:33:46,033 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 05:33:46,034 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 05:33:46,034 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 05:33:46,036 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 05:33:46,036 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 05:33:46,037 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 05:33:46,037 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 05:33:46,037 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 05:33:46,038 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 05:33:46,039 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 05:33:46,040 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-09-25 05:33:46,067 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 05:33:46,067 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 05:33:46,069 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 05:33:46,069 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 05:33:46,069 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 05:33:46,069 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 05:33:46,069 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 05:33:46,070 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 05:33:46,070 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 05:33:46,070 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 05:33:46,070 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 05:33:46,070 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 05:33:46,071 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 05:33:46,073 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 05:33:46,073 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 05:33:46,073 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 05:33:46,073 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 05:33:46,074 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 05:33:46,074 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 05:33:46,074 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 05:33:46,074 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 05:33:46,075 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 05:33:46,075 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 05:33:46,075 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 05:33:46,075 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 05:33:46,075 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 05:33:46,078 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 05:33:46,078 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 05:33:46,078 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 05:33:46,078 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SingleStatement Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true; [2020-09-25 05:33:46,562 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 05:33:46,589 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 05:33:46,593 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 05:33:46,595 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 05:33:46,596 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 05:33:46,597 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem01_label35.c [2020-09-25 05:33:46,664 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/50d4ef531/9a7aca9873b543a0a4607f5f29b2c89a/FLAG6457ec1ab [2020-09-25 05:33:47,244 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 05:33:47,245 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem01_label35.c [2020-09-25 05:33:47,258 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/50d4ef531/9a7aca9873b543a0a4607f5f29b2c89a/FLAG6457ec1ab [2020-09-25 05:33:47,454 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/50d4ef531/9a7aca9873b543a0a4607f5f29b2c89a [2020-09-25 05:33:47,466 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 05:33:47,472 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 05:33:47,473 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 05:33:47,474 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 05:33:47,478 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 05:33:47,479 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 05:33:47" (1/1) ... [2020-09-25 05:33:47,483 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@572c06d7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 05:33:47, skipping insertion in model container [2020-09-25 05:33:47,483 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 05:33:47" (1/1) ... [2020-09-25 05:33:47,492 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 05:33:47,547 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 05:33:48,121 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 05:33:48,139 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 05:33:48,420 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 05:33:48,447 INFO L208 MainTranslator]: Completed translation [2020-09-25 05:33:48,449 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 05:33:48 WrapperNode [2020-09-25 05:33:48,449 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 05:33:48,450 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 05:33:48,451 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 05:33:48,451 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 05:33:48,473 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 05:33:48" (1/1) ... [2020-09-25 05:33:48,476 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 05:33:48" (1/1) ... [2020-09-25 05:33:48,518 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 05:33:48" (1/1) ... [2020-09-25 05:33:48,521 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 05:33:48" (1/1) ... [2020-09-25 05:33:48,574 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 05:33:48" (1/1) ... [2020-09-25 05:33:48,591 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 05:33:48" (1/1) ... [2020-09-25 05:33:48,600 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 05:33:48" (1/1) ... [2020-09-25 05:33:48,613 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 05:33:48,614 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 05:33:48,614 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 05:33:48,614 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 05:33:48,616 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 05:33:48" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 05:33:48,695 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 05:33:48,695 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 05:33:48,696 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-09-25 05:33:48,696 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 05:33:48,696 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-09-25 05:33:48,696 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 05:33:48,696 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-25 05:33:48,697 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-09-25 05:33:48,697 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 05:33:48,697 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 05:33:48,697 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 05:33:50,044 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 05:33:50,045 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-09-25 05:33:50,063 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 05:33:50 BoogieIcfgContainer [2020-09-25 05:33:50,064 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 05:33:50,067 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 05:33:50,067 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 05:33:50,072 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 05:33:50,073 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 05:33:47" (1/3) ... [2020-09-25 05:33:50,076 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@552682b5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 05:33:50, skipping insertion in model container [2020-09-25 05:33:50,077 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 05:33:48" (2/3) ... [2020-09-25 05:33:50,077 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@552682b5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 05:33:50, skipping insertion in model container [2020-09-25 05:33:50,077 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 05:33:50" (3/3) ... [2020-09-25 05:33:50,080 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem01_label35.c [2020-09-25 05:33:50,094 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 05:33:50,111 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-25 05:33:50,133 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-25 05:33:50,176 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 05:33:50,177 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 05:33:50,177 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 05:33:50,177 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 05:33:50,177 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 05:33:50,177 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 05:33:50,178 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 05:33:50,178 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 05:33:50,218 INFO L276 IsEmpty]: Start isEmpty. Operand 525 states. [2020-09-25 05:33:50,252 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2020-09-25 05:33:50,252 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 05:33:50,254 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] [2020-09-25 05:33:50,255 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 05:33:50,261 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 05:33:50,261 INFO L82 PathProgramCache]: Analyzing trace with hash -850053121, now seen corresponding path program 1 times [2020-09-25 05:33:50,271 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 05:33:50,271 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [890084536] [2020-09-25 05:33:50,272 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 05:33:50,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:33:50,609 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:33:51,034 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:33:51,655 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:33:52,465 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:33:52,884 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:33:53,377 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:33:55,523 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:33:55,523 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 117 [2020-09-25 05:33:55,523 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-09-25 05:33:55,523 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-09-25 05:33:55,527 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:33:55,528 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:33:55,528 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 05:33:55,528 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-09-25 05:33:55,528 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 95 [2020-09-25 05:33:55,530 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 5 [2020-09-25 05:33:55,713 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 05:33:55,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:33:55,734 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:33:55,766 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:33:55,767 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-25 05:33:55,767 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:33:55,767 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 37 [2020-09-25 05:33:55,767 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:33:55,768 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:33:55,769 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 05:33:55,769 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:33:55,769 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-09-25 05:33:55,769 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:33:55,831 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 05:33:55,832 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [890084536] [2020-09-25 05:33:55,835 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 05:33:55,835 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-25 05:33:55,837 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [83646186] [2020-09-25 05:33:55,845 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 05:33:55,846 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 05:33:55,867 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 05:33:55,868 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-25 05:33:55,871 INFO L87 Difference]: Start difference. First operand 525 states. Second operand 5 states. [2020-09-25 05:33:58,576 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 05:33:58,576 INFO L93 Difference]: Finished difference Result 1360 states and 1895 transitions. [2020-09-25 05:33:58,577 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-09-25 05:33:58,578 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 108 [2020-09-25 05:33:58,580 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 05:33:58,605 INFO L225 Difference]: With dead ends: 1360 [2020-09-25 05:33:58,606 INFO L226 Difference]: Without dead ends: 781 [2020-09-25 05:33:58,616 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-09-25 05:33:58,640 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 781 states. [2020-09-25 05:33:58,746 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 781 to 746. [2020-09-25 05:33:58,747 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 746 states. [2020-09-25 05:33:58,754 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 746 states to 746 states and 914 transitions. [2020-09-25 05:33:58,756 INFO L78 Accepts]: Start accepts. Automaton has 746 states and 914 transitions. Word has length 108 [2020-09-25 05:33:58,758 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 05:33:58,758 INFO L479 AbstractCegarLoop]: Abstraction has 746 states and 914 transitions. [2020-09-25 05:33:58,758 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 05:33:58,759 INFO L276 IsEmpty]: Start isEmpty. Operand 746 states and 914 transitions. [2020-09-25 05:33:58,769 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 130 [2020-09-25 05:33:58,769 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 05:33:58,770 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 05:33:58,770 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 05:33:58,771 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 05:33:58,771 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 05:33:58,771 INFO L82 PathProgramCache]: Analyzing trace with hash -1639648560, now seen corresponding path program 1 times [2020-09-25 05:33:58,772 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 05:33:58,772 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1076516447] [2020-09-25 05:33:58,772 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 05:33:58,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:33:58,834 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:33:59,094 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:33:59,217 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:34:00,269 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:34:00,270 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 140 [2020-09-25 05:34:00,270 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-25 05:34:00,270 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1452 [2020-09-25 05:34:00,271 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:34:00,271 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:34:00,272 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 05:34:00,272 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 46 [2020-09-25 05:34:00,272 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 93 [2020-09-25 05:34:00,272 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:34:00,422 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 05:34:00,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:34:00,428 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:34:00,439 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:34:00,440 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-25 05:34:00,440 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:34:00,441 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-09-25 05:34:00,441 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:34:00,441 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:34:00,441 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 05:34:00,442 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:34:00,442 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 05:34:00,442 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:34:00,464 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-09-25 05:34:00,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:34:00,472 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:34:00,490 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:34:00,490 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-09-25 05:34:00,490 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:34:00,491 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-09-25 05:34:00,491 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:34:00,491 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:34:00,491 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 05:34:00,491 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:34:00,492 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 05:34:00,492 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:34:00,518 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 10 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 05:34:00,519 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1076516447] [2020-09-25 05:34:00,519 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 05:34:00,520 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-09-25 05:34:00,520 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1607251921] [2020-09-25 05:34:00,522 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 05:34:00,522 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 05:34:00,523 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 05:34:00,523 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-25 05:34:00,523 INFO L87 Difference]: Start difference. First operand 746 states and 914 transitions. Second operand 5 states. [2020-09-25 05:34:02,564 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 05:34:02,565 INFO L93 Difference]: Finished difference Result 1928 states and 2459 transitions. [2020-09-25 05:34:02,567 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 05:34:02,567 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 129 [2020-09-25 05:34:02,568 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 05:34:02,578 INFO L225 Difference]: With dead ends: 1928 [2020-09-25 05:34:02,578 INFO L226 Difference]: Without dead ends: 1206 [2020-09-25 05:34:02,582 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-09-25 05:34:02,584 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1206 states. [2020-09-25 05:34:02,625 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1206 to 1036. [2020-09-25 05:34:02,625 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1036 states. [2020-09-25 05:34:02,630 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1036 states to 1036 states and 1250 transitions. [2020-09-25 05:34:02,631 INFO L78 Accepts]: Start accepts. Automaton has 1036 states and 1250 transitions. Word has length 129 [2020-09-25 05:34:02,631 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 05:34:02,632 INFO L479 AbstractCegarLoop]: Abstraction has 1036 states and 1250 transitions. [2020-09-25 05:34:02,632 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 05:34:02,632 INFO L276 IsEmpty]: Start isEmpty. Operand 1036 states and 1250 transitions. [2020-09-25 05:34:02,642 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 134 [2020-09-25 05:34:02,642 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 05:34:02,642 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-09-25 05:34:02,643 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-25 05:34:02,643 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 05:34:02,643 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 05:34:02,643 INFO L82 PathProgramCache]: Analyzing trace with hash -1999519641, now seen corresponding path program 1 times [2020-09-25 05:34:02,643 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 05:34:02,644 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [912984992] [2020-09-25 05:34:02,644 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 05:34:02,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:34:02,719 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:34:02,859 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:34:02,926 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:34:03,063 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:34:03,132 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:34:03,370 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:34:03,755 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:34:07,183 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:34:07,184 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 144 [2020-09-25 05:34:07,184 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-09-25 05:34:07,184 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4496 [2020-09-25 05:34:07,184 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:34:07,185 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:34:07,185 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-25 05:34:07,185 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 18 [2020-09-25 05:34:07,185 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-09-25 05:34:07,186 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:34:07,284 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 05:34:07,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:34:07,295 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:34:07,324 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:34:07,324 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-25 05:34:07,325 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:34:07,325 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 33 [2020-09-25 05:34:07,325 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:34:07,325 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:34:07,325 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 05:34:07,326 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:34:07,326 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-09-25 05:34:07,326 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:34:07,365 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-09-25 05:34:07,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:34:07,375 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:34:07,429 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:34:07,430 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 21 [2020-09-25 05:34:07,430 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:34:07,431 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 59 [2020-09-25 05:34:07,431 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:34:07,432 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:34:07,432 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 05:34:07,433 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 05:34:07,433 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-09-25 05:34:07,434 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 05:34:07,554 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 05:34:07,555 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [912984992] [2020-09-25 05:34:07,555 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 05:34:07,555 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-09-25 05:34:07,556 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [367179740] [2020-09-25 05:34:07,558 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-25 05:34:07,559 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 05:34:07,560 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-25 05:34:07,560 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-09-25 05:34:07,560 INFO L87 Difference]: Start difference. First operand 1036 states and 1250 transitions. Second operand 8 states. [2020-09-25 05:34:10,305 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 05:34:10,306 INFO L93 Difference]: Finished difference Result 3198 states and 4083 transitions. [2020-09-25 05:34:10,306 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-09-25 05:34:10,306 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 133 [2020-09-25 05:34:10,307 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 05:34:10,321 INFO L225 Difference]: With dead ends: 3198 [2020-09-25 05:34:10,321 INFO L226 Difference]: Without dead ends: 1974 [2020-09-25 05:34:10,328 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 35 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=77, Invalid=195, Unknown=0, NotChecked=0, Total=272 [2020-09-25 05:34:10,331 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1974 states. [2020-09-25 05:34:10,399 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1974 to 1755. [2020-09-25 05:34:10,400 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1755 states. [2020-09-25 05:34:10,410 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1755 states to 1755 states and 2060 transitions. [2020-09-25 05:34:10,414 INFO L78 Accepts]: Start accepts. Automaton has 1755 states and 2060 transitions. Word has length 133 [2020-09-25 05:34:10,415 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 05:34:10,415 INFO L479 AbstractCegarLoop]: Abstraction has 1755 states and 2060 transitions. [2020-09-25 05:34:10,415 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-09-25 05:34:10,415 INFO L276 IsEmpty]: Start isEmpty. Operand 1755 states and 2060 transitions. [2020-09-25 05:34:10,421 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2020-09-25 05:34:10,421 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 05:34:10,421 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 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] [2020-09-25 05:34:10,421 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-25 05:34:10,422 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 05:34:10,422 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 05:34:10,422 INFO L82 PathProgramCache]: Analyzing trace with hash -1160097473, now seen corresponding path program 1 times [2020-09-25 05:34:10,422 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 05:34:10,423 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1454768834] [2020-09-25 05:34:10,423 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 05:34:10,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:34:10,466 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:34:10,663 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:34:10,751 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:34:10,906 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:34:10,947 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:34:10,993 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:34:12,209 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:34:15,466 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:34:15,467 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 167 [2020-09-25 05:34:15,467 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-09-25 05:34:15,467 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5017 [2020-09-25 05:34:15,467 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:34:15,468 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:34:15,468 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-25 05:34:15,468 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 23 [2020-09-25 05:34:15,468 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 46 [2020-09-25 05:34:15,468 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:34:15,547 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 05:34:15,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:34:15,556 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:34:15,577 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:34:15,577 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-25 05:34:15,578 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:34:15,578 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 24 [2020-09-25 05:34:15,578 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:34:15,578 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:34:15,578 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 05:34:15,579 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:34:15,579 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 19 [2020-09-25 05:34:15,579 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:34:15,602 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-09-25 05:34:15,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:34:15,610 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:34:15,619 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:34:15,721 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:34:15,721 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-09-25 05:34:15,721 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 05:34:15,721 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 114 [2020-09-25 05:34:15,722 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:34:15,722 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:34:15,723 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 05:34:15,723 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 05:34:15,723 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-09-25 05:34:15,726 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-09-25 05:34:15,765 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2020-09-25 05:34:15,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:34:15,794 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:34:15,843 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:34:15,844 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 21 [2020-09-25 05:34:15,844 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:34:15,845 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 60 [2020-09-25 05:34:15,845 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:34:15,845 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:34:15,846 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 05:34:15,846 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 05:34:15,847 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-09-25 05:34:15,847 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:34:15,919 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 35 proven. 2 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-09-25 05:34:15,922 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1454768834] [2020-09-25 05:34:15,922 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 05:34:15,922 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-09-25 05:34:15,923 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1460202553] [2020-09-25 05:34:15,924 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-09-25 05:34:15,925 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 05:34:15,925 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-09-25 05:34:15,926 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2020-09-25 05:34:15,926 INFO L87 Difference]: Start difference. First operand 1755 states and 2060 transitions. Second operand 9 states. [2020-09-25 05:34:16,520 WARN L193 SmtUtils]: Spent 132.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 60 [2020-09-25 05:34:18,345 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 05:34:18,346 INFO L93 Difference]: Finished difference Result 4717 states and 6171 transitions. [2020-09-25 05:34:18,346 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2020-09-25 05:34:18,346 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 154 [2020-09-25 05:34:18,347 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 05:34:18,366 INFO L225 Difference]: With dead ends: 4717 [2020-09-25 05:34:18,367 INFO L226 Difference]: Without dead ends: 2802 [2020-09-25 05:34:18,376 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 61 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=96, Invalid=284, Unknown=0, NotChecked=0, Total=380 [2020-09-25 05:34:18,380 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2802 states. [2020-09-25 05:34:18,459 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2802 to 2249. [2020-09-25 05:34:18,459 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2249 states. [2020-09-25 05:34:18,466 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2249 states to 2249 states and 2632 transitions. [2020-09-25 05:34:18,467 INFO L78 Accepts]: Start accepts. Automaton has 2249 states and 2632 transitions. Word has length 154 [2020-09-25 05:34:18,467 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 05:34:18,467 INFO L479 AbstractCegarLoop]: Abstraction has 2249 states and 2632 transitions. [2020-09-25 05:34:18,467 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-09-25 05:34:18,468 INFO L276 IsEmpty]: Start isEmpty. Operand 2249 states and 2632 transitions. [2020-09-25 05:34:18,474 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 163 [2020-09-25 05:34:18,474 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 05:34:18,474 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2020-09-25 05:34:18,474 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-25 05:34:18,475 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 05:34:18,475 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 05:34:18,475 INFO L82 PathProgramCache]: Analyzing trace with hash 1106704956, now seen corresponding path program 1 times [2020-09-25 05:34:18,475 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 05:34:18,475 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1310497297] [2020-09-25 05:34:18,476 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 05:34:18,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:34:18,530 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:34:18,595 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:34:18,779 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:34:19,191 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:34:19,286 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:34:19,407 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:34:19,472 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:34:19,557 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:34:23,521 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:34:23,521 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 175 [2020-09-25 05:34:23,522 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-09-25 05:34:23,522 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5016 [2020-09-25 05:34:23,522 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:34:23,522 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:34:23,522 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-25 05:34:23,523 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 18 [2020-09-25 05:34:23,523 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 35 [2020-09-25 05:34:23,523 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:34:23,605 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 05:34:23,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:34:23,614 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:34:23,647 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:34:23,648 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-25 05:34:23,648 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:34:23,648 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 37 [2020-09-25 05:34:23,648 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:34:23,648 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:34:23,649 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 05:34:23,649 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:34:23,649 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-09-25 05:34:23,649 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:34:23,685 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-09-25 05:34:23,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:34:23,703 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:34:23,767 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:34:23,767 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 05:34:23,768 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:34:23,768 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 71 [2020-09-25 05:34:23,768 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:34:23,769 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:34:23,769 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 05:34:23,769 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 05:34:23,769 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-09-25 05:34:23,770 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:34:23,804 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2020-09-25 05:34:23,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:34:23,811 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:34:23,822 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:34:23,822 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 21 [2020-09-25 05:34:23,823 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:34:23,823 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-09-25 05:34:23,823 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:34:23,823 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:34:23,824 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 05:34:23,824 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 18 [2020-09-25 05:34:23,824 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 05:34:23,824 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:34:23,859 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 33 proven. 7 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2020-09-25 05:34:23,860 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1310497297] [2020-09-25 05:34:23,860 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 05:34:23,860 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-09-25 05:34:23,860 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1238152537] [2020-09-25 05:34:23,861 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-25 05:34:23,861 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 05:34:23,861 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-25 05:34:23,862 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-09-25 05:34:23,862 INFO L87 Difference]: Start difference. First operand 2249 states and 2632 transitions. Second operand 8 states. [2020-09-25 05:34:24,322 WARN L193 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 63 [2020-09-25 05:34:26,763 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 05:34:26,764 INFO L93 Difference]: Finished difference Result 4974 states and 5830 transitions. [2020-09-25 05:34:26,764 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-09-25 05:34:26,764 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 162 [2020-09-25 05:34:26,764 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 05:34:26,775 INFO L225 Difference]: With dead ends: 4974 [2020-09-25 05:34:26,775 INFO L226 Difference]: Without dead ends: 2749 [2020-09-25 05:34:26,782 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 12 SyntacticMatches, 2 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 41 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=77, Invalid=195, Unknown=0, NotChecked=0, Total=272 [2020-09-25 05:34:26,785 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2749 states. [2020-09-25 05:34:26,839 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2749 to 2562. [2020-09-25 05:34:26,840 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2562 states. [2020-09-25 05:34:26,852 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2562 states to 2562 states and 2963 transitions. [2020-09-25 05:34:26,853 INFO L78 Accepts]: Start accepts. Automaton has 2562 states and 2963 transitions. Word has length 162 [2020-09-25 05:34:26,853 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 05:34:26,853 INFO L479 AbstractCegarLoop]: Abstraction has 2562 states and 2963 transitions. [2020-09-25 05:34:26,853 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-09-25 05:34:26,853 INFO L276 IsEmpty]: Start isEmpty. Operand 2562 states and 2963 transitions. [2020-09-25 05:34:26,860 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 180 [2020-09-25 05:34:26,860 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 05:34:26,861 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 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, 1, 1, 1] [2020-09-25 05:34:26,861 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-25 05:34:26,861 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 05:34:26,862 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 05:34:26,862 INFO L82 PathProgramCache]: Analyzing trace with hash 2100501785, now seen corresponding path program 1 times [2020-09-25 05:34:26,862 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 05:34:26,862 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1176534722] [2020-09-25 05:34:26,862 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 05:34:26,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:34:26,943 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:34:27,026 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:34:27,213 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:34:27,266 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:34:27,707 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:34:27,860 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:34:28,010 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:34:31,503 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:34:31,559 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:34:31,923 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:34:31,923 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 194 [2020-09-25 05:34:31,923 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-09-25 05:34:31,923 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5019 [2020-09-25 05:34:31,924 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:34:31,924 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:34:31,924 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-25 05:34:31,924 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 41 [2020-09-25 05:34:31,925 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 55 [2020-09-25 05:34:31,925 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:34:32,020 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 05:34:32,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:34:32,025 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:34:32,037 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:34:32,038 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-25 05:34:32,038 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:34:32,038 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-09-25 05:34:32,038 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:34:32,038 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:34:32,039 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 05:34:32,039 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:34:32,039 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 05:34:32,039 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 05:34:32,062 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-09-25 05:34:32,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:34:32,069 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:34:32,079 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:34:32,079 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-09-25 05:34:32,079 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:34:32,080 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-09-25 05:34:32,080 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:34:32,080 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:34:32,080 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 05:34:32,080 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:34:32,080 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 3 [2020-09-25 05:34:32,080 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 05:34:32,083 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2020-09-25 05:34:32,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:34:32,097 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:34:32,125 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:34:32,171 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:34:32,171 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 05:34:32,172 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 05:34:32,172 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 78 [2020-09-25 05:34:32,172 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:34:32,172 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:34:32,172 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 05:34:32,172 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:34:32,172 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-09-25 05:34:32,173 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 05:34:32,191 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2020-09-25 05:34:32,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:34:32,202 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:34:32,244 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:34:32,245 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 21 [2020-09-25 05:34:32,245 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:34:32,245 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 46 [2020-09-25 05:34:32,246 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:34:32,246 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:34:32,246 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 05:34:32,247 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 05:34:32,247 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-09-25 05:34:32,247 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:34:32,351 INFO L134 CoverageAnalysis]: Checked inductivity of 88 backedges. 70 proven. 14 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-09-25 05:34:32,352 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1176534722] [2020-09-25 05:34:32,354 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 05:34:32,355 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-09-25 05:34:32,355 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [221323512] [2020-09-25 05:34:32,356 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-09-25 05:34:32,356 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 05:34:32,356 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-09-25 05:34:32,357 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2020-09-25 05:34:32,357 INFO L87 Difference]: Start difference. First operand 2562 states and 2963 transitions. Second operand 9 states. [2020-09-25 05:34:33,141 WARN L193 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 63 [2020-09-25 05:34:35,805 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 05:34:35,805 INFO L93 Difference]: Finished difference Result 6047 states and 7164 transitions. [2020-09-25 05:34:35,805 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-09-25 05:34:35,805 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 179 [2020-09-25 05:34:35,806 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 05:34:35,819 INFO L225 Difference]: With dead ends: 6047 [2020-09-25 05:34:35,819 INFO L226 Difference]: Without dead ends: 3650 [2020-09-25 05:34:35,825 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 78 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=104, Invalid=316, Unknown=0, NotChecked=0, Total=420 [2020-09-25 05:34:35,829 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3650 states. [2020-09-25 05:34:35,904 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3650 to 3159. [2020-09-25 05:34:35,904 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3159 states. [2020-09-25 05:34:35,911 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3159 states to 3159 states and 3674 transitions. [2020-09-25 05:34:35,911 INFO L78 Accepts]: Start accepts. Automaton has 3159 states and 3674 transitions. Word has length 179 [2020-09-25 05:34:35,912 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 05:34:35,912 INFO L479 AbstractCegarLoop]: Abstraction has 3159 states and 3674 transitions. [2020-09-25 05:34:35,912 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-09-25 05:34:35,912 INFO L276 IsEmpty]: Start isEmpty. Operand 3159 states and 3674 transitions. [2020-09-25 05:34:35,921 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 194 [2020-09-25 05:34:35,922 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 05:34:35,922 INFO L422 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 05:34:35,922 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-09-25 05:34:35,923 INFO L427 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 05:34:35,923 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 05:34:35,923 INFO L82 PathProgramCache]: Analyzing trace with hash -831779598, now seen corresponding path program 1 times [2020-09-25 05:34:35,923 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 05:34:35,924 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1101840833] [2020-09-25 05:34:35,924 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 05:34:35,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:34:36,001 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:34:36,079 FATAL L256 erpolLogProxyWrapper]: Now shrinking...