/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/Problem02_label01.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-25 05:34:59,946 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 05:34:59,951 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 05:34:59,999 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 05:35:00,000 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 05:35:00,008 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 05:35:00,010 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 05:35:00,014 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 05:35:00,017 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 05:35:00,021 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 05:35:00,022 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 05:35:00,023 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 05:35:00,024 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 05:35:00,027 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 05:35:00,030 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 05:35:00,032 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 05:35:00,033 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 05:35:00,034 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 05:35:00,036 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 05:35:00,045 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 05:35:00,047 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 05:35:00,048 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 05:35:00,051 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 05:35:00,052 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 05:35:00,065 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 05:35:00,068 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 05:35:00,068 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 05:35:00,069 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 05:35:00,073 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 05:35:00,074 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 05:35:00,074 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 05:35:00,075 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 05:35:00,079 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 05:35:00,080 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 05:35:00,083 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 05:35:00,083 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 05:35:00,084 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 05:35:00,084 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 05:35:00,085 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 05:35:00,086 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 05:35:00,087 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 05:35:00,088 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 05:35:00,133 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 05:35:00,134 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 05:35:00,136 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 05:35:00,136 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 05:35:00,137 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 05:35:00,137 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 05:35:00,137 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 05:35:00,138 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 05:35:00,138 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 05:35:00,138 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 05:35:00,139 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 05:35:00,139 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 05:35:00,140 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 05:35:00,140 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 05:35:00,140 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 05:35:00,140 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 05:35:00,141 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 05:35:00,141 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 05:35:00,141 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 05:35:00,141 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 05:35:00,141 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 05:35:00,142 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 05:35:00,142 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 05:35:00,142 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 05:35:00,142 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 05:35:00,143 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 05:35:00,143 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 05:35:00,143 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 05:35:00,143 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 05:35:00,143 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 05:35:00,602 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 05:35:00,620 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 05:35:00,624 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 05:35:00,626 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 05:35:00,627 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 05:35:00,628 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem02_label01.c [2020-09-25 05:35:00,713 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/31bdba18c/4737ad0420a74c318ae8a24c217b16e6/FLAGf03e11c93 [2020-09-25 05:35:01,355 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 05:35:01,356 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem02_label01.c [2020-09-25 05:35:01,369 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/31bdba18c/4737ad0420a74c318ae8a24c217b16e6/FLAGf03e11c93 [2020-09-25 05:35:01,586 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/31bdba18c/4737ad0420a74c318ae8a24c217b16e6 [2020-09-25 05:35:01,601 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 05:35:01,607 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 05:35:01,608 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 05:35:01,609 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 05:35:01,613 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 05:35:01,614 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 05:35:01" (1/1) ... [2020-09-25 05:35:01,619 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@75e37eeb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 05:35:01, skipping insertion in model container [2020-09-25 05:35:01,619 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 05:35:01" (1/1) ... [2020-09-25 05:35:01,628 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 05:35:01,704 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 05:35:02,163 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 05:35:02,171 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 05:35:02,480 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 05:35:02,501 INFO L208 MainTranslator]: Completed translation [2020-09-25 05:35:02,502 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 05:35:02 WrapperNode [2020-09-25 05:35:02,502 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 05:35:02,503 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 05:35:02,503 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 05:35:02,503 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 05:35:02,521 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 05:35:02" (1/1) ... [2020-09-25 05:35:02,521 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 05:35:02" (1/1) ... [2020-09-25 05:35:02,541 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 05:35:02" (1/1) ... [2020-09-25 05:35:02,542 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 05:35:02" (1/1) ... [2020-09-25 05:35:02,581 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 05:35:02" (1/1) ... [2020-09-25 05:35:02,600 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 05:35:02" (1/1) ... [2020-09-25 05:35:02,605 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 05:35:02" (1/1) ... [2020-09-25 05:35:02,611 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 05:35:02,612 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 05:35:02,612 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 05:35:02,612 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 05:35:02,614 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 05:35:02" (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 05:35:02,706 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 05:35:02,706 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 05:35:02,706 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-09-25 05:35:02,706 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 05:35:02,706 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-09-25 05:35:02,707 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 05:35:02,707 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-25 05:35:02,707 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-09-25 05:35:02,707 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 05:35:02,708 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 05:35:02,708 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 05:35:04,073 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 05:35:04,073 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-09-25 05:35:04,083 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 05:35:04 BoogieIcfgContainer [2020-09-25 05:35:04,084 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 05:35:04,085 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 05:35:04,085 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 05:35:04,089 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 05:35:04,089 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 05:35:01" (1/3) ... [2020-09-25 05:35:04,091 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@39890648 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 05:35:04, skipping insertion in model container [2020-09-25 05:35:04,091 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 05:35:02" (2/3) ... [2020-09-25 05:35:04,091 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@39890648 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 05:35:04, skipping insertion in model container [2020-09-25 05:35:04,092 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 05:35:04" (3/3) ... [2020-09-25 05:35:04,094 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem02_label01.c [2020-09-25 05:35:04,106 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 05:35:04,119 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-25 05:35:04,142 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-25 05:35:04,178 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 05:35:04,178 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 05:35:04,178 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 05:35:04,179 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 05:35:04,179 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 05:35:04,179 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 05:35:04,179 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 05:35:04,179 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 05:35:04,212 INFO L276 IsEmpty]: Start isEmpty. Operand 527 states. [2020-09-25 05:35:04,234 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2020-09-25 05:35:04,234 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 05:35:04,236 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 05:35:04,236 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 05:35:04,244 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 05:35:04,244 INFO L82 PathProgramCache]: Analyzing trace with hash 1587967458, now seen corresponding path program 1 times [2020-09-25 05:35:04,254 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 05:35:04,255 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [829968196] [2020-09-25 05:35:04,255 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 05:35:04,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:35:04,678 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:35:04,904 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:35:05,436 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:35:05,804 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:35:06,922 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:35:08,121 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:35:08,217 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:35:08,375 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:35:09,293 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:35:09,540 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:35:09,541 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 148 [2020-09-25 05:35:09,542 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-09-25 05:35:09,542 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5021 [2020-09-25 05:35:09,547 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:35:09,548 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:35:09,548 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 05:35:09,548 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 17 [2020-09-25 05:35:09,549 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 130 [2020-09-25 05:35:09,550 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 7 [2020-09-25 05:35:09,794 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 05:35:09,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:35:09,807 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:35:09,829 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:35:09,829 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 05:35:09,829 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:35:09,830 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 26 [2020-09-25 05:35:09,830 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:35:09,830 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:35:09,830 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 05:35:09,831 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:35:09,831 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-09-25 05:35:09,831 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:35:09,877 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 05:35:09,878 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [829968196] [2020-09-25 05:35:09,880 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 05:35:09,881 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-25 05:35:09,882 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [696617791] [2020-09-25 05:35:09,888 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 05:35:09,889 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 05:35:09,908 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 05:35:09,909 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-25 05:35:09,912 INFO L87 Difference]: Start difference. First operand 527 states. Second operand 5 states. [2020-09-25 05:35:12,720 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 05:35:12,720 INFO L93 Difference]: Finished difference Result 1396 states and 1850 transitions. [2020-09-25 05:35:12,722 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-25 05:35:12,726 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 139 [2020-09-25 05:35:12,727 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 05:35:12,770 INFO L225 Difference]: With dead ends: 1396 [2020-09-25 05:35:12,771 INFO L226 Difference]: Without dead ends: 788 [2020-09-25 05:35:12,782 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-09-25 05:35:12,803 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 788 states. [2020-09-25 05:35:12,884 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 788 to 665. [2020-09-25 05:35:12,886 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 665 states. [2020-09-25 05:35:12,891 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 665 states to 665 states and 813 transitions. [2020-09-25 05:35:12,893 INFO L78 Accepts]: Start accepts. Automaton has 665 states and 813 transitions. Word has length 139 [2020-09-25 05:35:12,897 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 05:35:12,897 INFO L479 AbstractCegarLoop]: Abstraction has 665 states and 813 transitions. [2020-09-25 05:35:12,898 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 05:35:12,898 INFO L276 IsEmpty]: Start isEmpty. Operand 665 states and 813 transitions. [2020-09-25 05:35:12,907 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 158 [2020-09-25 05:35:12,908 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 05:35:12,908 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 05:35:12,909 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 05:35:12,909 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 05:35:12,910 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 05:35:12,910 INFO L82 PathProgramCache]: Analyzing trace with hash 366034702, now seen corresponding path program 1 times [2020-09-25 05:35:12,910 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 05:35:12,910 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1349600806] [2020-09-25 05:35:12,911 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 05:35:12,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:35:13,027 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:35:13,124 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:35:13,384 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:35:13,535 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:35:13,826 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:35:13,967 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:35:15,015 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:35:15,273 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:35:18,007 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:35:18,008 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 168 [2020-09-25 05:35:18,008 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-09-25 05:35:18,008 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5016 [2020-09-25 05:35:18,009 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:35:18,009 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:35:18,009 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 05:35:18,010 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 39 [2020-09-25 05:35:18,010 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 128 [2020-09-25 05:35:18,010 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:35:18,201 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 05:35:18,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:35:18,207 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:35:18,217 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:35:18,218 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 05:35:18,218 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:35:18,218 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-09-25 05:35:18,219 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:35:18,219 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:35:18,219 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 05:35:18,219 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:35:18,220 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 05:35:18,220 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:35:18,242 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-25 05:35:18,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:35:18,250 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:35:18,265 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:35:18,265 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-09-25 05:35:18,265 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:35:18,266 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-09-25 05:35:18,266 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:35:18,266 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:35:18,267 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 05:35:18,267 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:35:18,267 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 3 [2020-09-25 05:35:18,268 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:35:18,368 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 8 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 05:35:18,369 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1349600806] [2020-09-25 05:35:18,369 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 05:35:18,369 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-09-25 05:35:18,370 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [658793582] [2020-09-25 05:35:18,372 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 05:35:18,372 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 05:35:18,372 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 05:35:18,373 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-25 05:35:18,373 INFO L87 Difference]: Start difference. First operand 665 states and 813 transitions. Second operand 5 states. [2020-09-25 05:35:20,431 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 05:35:20,431 INFO L93 Difference]: Finished difference Result 1623 states and 2082 transitions. [2020-09-25 05:35:20,432 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 05:35:20,432 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 157 [2020-09-25 05:35:20,433 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 05:35:20,440 INFO L225 Difference]: With dead ends: 1623 [2020-09-25 05:35:20,440 INFO L226 Difference]: Without dead ends: 980 [2020-09-25 05:35:20,443 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 05:35:20,446 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 980 states. [2020-09-25 05:35:20,483 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 980 to 968. [2020-09-25 05:35:20,483 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 968 states. [2020-09-25 05:35:20,489 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 968 states to 968 states and 1232 transitions. [2020-09-25 05:35:20,490 INFO L78 Accepts]: Start accepts. Automaton has 968 states and 1232 transitions. Word has length 157 [2020-09-25 05:35:20,490 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 05:35:20,490 INFO L479 AbstractCegarLoop]: Abstraction has 968 states and 1232 transitions. [2020-09-25 05:35:20,491 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 05:35:20,491 INFO L276 IsEmpty]: Start isEmpty. Operand 968 states and 1232 transitions. [2020-09-25 05:35:20,497 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2020-09-25 05:35:20,497 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 05:35:20,499 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 05:35:20,499 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-25 05:35:20,499 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 05:35:20,499 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 05:35:20,500 INFO L82 PathProgramCache]: Analyzing trace with hash -1889998438, now seen corresponding path program 1 times [2020-09-25 05:35:20,500 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 05:35:20,500 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1665079499] [2020-09-25 05:35:20,500 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 05:35:20,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:35:20,594 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:35:20,703 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:35:20,992 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:35:21,117 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:35:21,942 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:35:22,155 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:35:25,568 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:35:25,569 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 188 [2020-09-25 05:35:25,569 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-09-25 05:35:25,569 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5009 [2020-09-25 05:35:25,569 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:35:25,570 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:35:25,570 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 05:35:25,570 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 61 [2020-09-25 05:35:25,570 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 126 [2020-09-25 05:35:25,571 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:35:25,689 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 05:35:25,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:35:25,697 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:35:25,703 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:35:25,703 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 05:35:25,703 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:35:25,704 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-09-25 05:35:25,704 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:35:25,705 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:35:25,705 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 05:35:25,705 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:35:25,706 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 05:35:25,706 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:35:25,734 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-25 05:35:25,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:35:25,754 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:35:25,800 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:35:25,801 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-09-25 05:35:25,801 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:35:25,802 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 53 [2020-09-25 05:35:25,802 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:35:25,802 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:35:25,803 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 05:35:25,803 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:35:25,803 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 25 [2020-09-25 05:35:25,804 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:35:25,884 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 26 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 05:35:25,884 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1665079499] [2020-09-25 05:35:25,885 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 05:35:25,885 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-09-25 05:35:25,885 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1855081544] [2020-09-25 05:35:25,887 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 05:35:25,887 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 05:35:25,888 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 05:35:25,888 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-25 05:35:25,889 INFO L87 Difference]: Start difference. First operand 968 states and 1232 transitions. Second operand 5 states. [2020-09-25 05:35:28,033 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 05:35:28,033 INFO L93 Difference]: Finished difference Result 2422 states and 3187 transitions. [2020-09-25 05:35:28,034 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 05:35:28,034 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 177 [2020-09-25 05:35:28,035 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 05:35:28,049 INFO L225 Difference]: With dead ends: 2422 [2020-09-25 05:35:28,049 INFO L226 Difference]: Without dead ends: 1476 [2020-09-25 05:35:28,054 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 05:35:28,058 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1476 states. [2020-09-25 05:35:28,110 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1476 to 1426. [2020-09-25 05:35:28,111 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1426 states. [2020-09-25 05:35:28,120 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1426 states to 1426 states and 1751 transitions. [2020-09-25 05:35:28,120 INFO L78 Accepts]: Start accepts. Automaton has 1426 states and 1751 transitions. Word has length 177 [2020-09-25 05:35:28,121 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 05:35:28,122 INFO L479 AbstractCegarLoop]: Abstraction has 1426 states and 1751 transitions. [2020-09-25 05:35:28,122 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 05:35:28,122 INFO L276 IsEmpty]: Start isEmpty. Operand 1426 states and 1751 transitions. [2020-09-25 05:35:28,130 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 197 [2020-09-25 05:35:28,130 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 05:35:28,130 INFO L422 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 05:35:28,131 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-25 05:35:28,139 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 05:35:28,139 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 05:35:28,140 INFO L82 PathProgramCache]: Analyzing trace with hash 1392969778, now seen corresponding path program 1 times [2020-09-25 05:35:28,140 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 05:35:28,141 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1298408943] [2020-09-25 05:35:28,141 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 05:35:28,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:35:28,225 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:35:28,285 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:35:28,661 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:35:28,730 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:35:31,908 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:35:32,776 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:35:33,188 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:35:33,189 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 209 [2020-09-25 05:35:33,189 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-09-25 05:35:33,189 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5005 [2020-09-25 05:35:33,190 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:35:33,190 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:35:33,190 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 05:35:33,191 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 80 [2020-09-25 05:35:33,192 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 128 [2020-09-25 05:35:33,192 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 05:35:33,349 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 05:35:33,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:35:33,354 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:35:33,364 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:35:33,364 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 05:35:33,364 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:35:33,364 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-09-25 05:35:33,365 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:35:33,365 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:35:33,365 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 05:35:33,365 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:35:33,366 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 05:35:33,366 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:35:33,392 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-25 05:35:33,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:35:33,395 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:35:33,402 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:35:33,402 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-09-25 05:35:33,403 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:35:33,403 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-25 05:35:33,403 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:35:33,404 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:35:33,404 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 05:35:33,404 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:35:33,404 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 05:35:33,405 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:35:33,408 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2020-09-25 05:35:33,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:35:33,424 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:35:33,464 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:35:33,465 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 36 [2020-09-25 05:35:33,465 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:35:33,465 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 47 [2020-09-25 05:35:33,466 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:35:33,466 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:35:33,466 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 05:35:33,467 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:35:33,467 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 25 [2020-09-25 05:35:33,467 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:35:33,556 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 44 proven. 2 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2020-09-25 05:35:33,556 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1298408943] [2020-09-25 05:35:33,556 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 05:35:33,557 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-09-25 05:35:33,557 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [681412047] [2020-09-25 05:35:33,558 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 05:35:33,558 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 05:35:33,558 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 05:35:33,559 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-25 05:35:33,559 INFO L87 Difference]: Start difference. First operand 1426 states and 1751 transitions. Second operand 5 states. [2020-09-25 05:35:35,855 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 05:35:35,859 INFO L93 Difference]: Finished difference Result 3476 states and 4457 transitions. [2020-09-25 05:35:35,859 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 05:35:35,860 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 196 [2020-09-25 05:35:35,860 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 05:35:35,872 INFO L225 Difference]: With dead ends: 3476 [2020-09-25 05:35:35,873 INFO L226 Difference]: Without dead ends: 2072 [2020-09-25 05:35:35,878 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-09-25 05:35:35,881 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2072 states. [2020-09-25 05:35:35,936 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2072 to 2034. [2020-09-25 05:35:35,936 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2034 states. [2020-09-25 05:35:35,946 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2034 states to 2034 states and 2499 transitions. [2020-09-25 05:35:35,947 INFO L78 Accepts]: Start accepts. Automaton has 2034 states and 2499 transitions. Word has length 196 [2020-09-25 05:35:35,947 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 05:35:35,948 INFO L479 AbstractCegarLoop]: Abstraction has 2034 states and 2499 transitions. [2020-09-25 05:35:35,948 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 05:35:35,948 INFO L276 IsEmpty]: Start isEmpty. Operand 2034 states and 2499 transitions. [2020-09-25 05:35:35,957 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 204 [2020-09-25 05:35:35,957 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 05:35:35,957 INFO L422 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 05:35:35,958 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-25 05:35:35,958 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 05:35:35,958 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 05:35:35,958 INFO L82 PathProgramCache]: Analyzing trace with hash 546258273, now seen corresponding path program 1 times [2020-09-25 05:35:35,958 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 05:35:35,959 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1433477278] [2020-09-25 05:35:35,959 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 05:35:35,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:35:36,015 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:35:36,071 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:35:37,325 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:35:37,451 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:35:37,958 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:35:38,652 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:35:38,736 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:35:40,987 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:35:40,987 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 216 [2020-09-25 05:35:40,987 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-09-25 05:35:40,988 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4999 [2020-09-25 05:35:40,988 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:35:40,988 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:35:40,988 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 05:35:40,988 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 87 [2020-09-25 05:35:40,989 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 128 [2020-09-25 05:35:40,989 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 05:35:41,116 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 05:35:41,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:35:41,123 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:35:41,132 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:35:41,132 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 05:35:41,132 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:35:41,132 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-09-25 05:35:41,132 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:35:41,133 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:35:41,133 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 05:35:41,133 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:35:41,133 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 05:35:41,133 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 05:35:41,157 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-25 05:35:41,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:35:41,162 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:35:41,175 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:35:41,176 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-09-25 05:35:41,176 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:35:41,176 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-09-25 05:35:41,176 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:35:41,176 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:35:41,176 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 05:35:41,176 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:35:41,176 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 05:35:41,177 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 05:35:41,182 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2020-09-25 05:35:41,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:35:41,189 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:35:41,207 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:35:41,207 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-09-25 05:35:41,207 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:35:41,207 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-09-25 05:35:41,207 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:35:41,208 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:35:41,208 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 05:35:41,208 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:35:41,208 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-09-25 05:35:41,208 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 05:35:41,258 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 46 proven. 2 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2020-09-25 05:35:41,258 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1433477278] [2020-09-25 05:35:41,258 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 05:35:41,259 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-09-25 05:35:41,259 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1598964448] [2020-09-25 05:35:41,260 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 05:35:41,260 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 05:35:41,260 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 05:35:41,260 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-25 05:35:41,261 INFO L87 Difference]: Start difference. First operand 2034 states and 2499 transitions. Second operand 5 states. [2020-09-25 05:35:43,583 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 05:35:43,584 INFO L93 Difference]: Finished difference Result 4680 states and 5952 transitions. [2020-09-25 05:35:43,585 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 05:35:43,585 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 203 [2020-09-25 05:35:43,586 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 05:35:43,602 INFO L225 Difference]: With dead ends: 4680 [2020-09-25 05:35:43,603 INFO L226 Difference]: Without dead ends: 2668 [2020-09-25 05:35:43,611 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-09-25 05:35:43,616 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2668 states. [2020-09-25 05:35:43,702 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2668 to 2644. [2020-09-25 05:35:43,702 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2644 states. [2020-09-25 05:35:43,714 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2644 states to 2644 states and 3205 transitions. [2020-09-25 05:35:43,715 INFO L78 Accepts]: Start accepts. Automaton has 2644 states and 3205 transitions. Word has length 203 [2020-09-25 05:35:43,715 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 05:35:43,716 INFO L479 AbstractCegarLoop]: Abstraction has 2644 states and 3205 transitions. [2020-09-25 05:35:43,716 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 05:35:43,716 INFO L276 IsEmpty]: Start isEmpty. Operand 2644 states and 3205 transitions. [2020-09-25 05:35:43,729 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 247 [2020-09-25 05:35:43,730 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 05:35:43,730 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 05:35:43,730 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-25 05:35:43,731 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 05:35:43,731 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 05:35:43,731 INFO L82 PathProgramCache]: Analyzing trace with hash -1688950377, now seen corresponding path program 1 times [2020-09-25 05:35:43,731 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 05:35:43,732 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [558932466] [2020-09-25 05:35:43,732 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 05:35:43,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:35:43,814 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:35:43,935 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:35:44,020 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:35:44,106 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:35:47,361 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:35:47,425 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:35:47,494 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:35:48,622 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:35:48,788 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:35:48,788 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 259 [2020-09-25 05:35:48,788 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-09-25 05:35:48,788 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5010 [2020-09-25 05:35:48,788 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:35:48,788 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:35:48,789 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 05:35:48,789 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 127 [2020-09-25 05:35:48,789 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-09-25 05:35:48,789 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 05:35:48,860 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 05:35:48,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:35:48,865 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:35:48,869 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:35:48,870 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 05:35:48,870 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:35:48,870 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-25 05:35:48,870 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:35:48,870 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:35:48,870 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 05:35:48,871 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:35:48,871 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 05:35:48,871 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 05:35:48,889 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-25 05:35:48,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:35:48,894 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:35:48,907 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:35:48,907 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-09-25 05:35:48,907 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:35:48,908 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-09-25 05:35:48,908 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:35:48,908 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:35:48,908 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 05:35:48,908 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:35:48,908 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 05:35:48,908 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 05:35:48,914 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2020-09-25 05:35:48,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:35:48,933 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:35:48,978 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:35:48,978 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 65 [2020-09-25 05:35:48,978 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:35:48,978 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 52 [2020-09-25 05:35:48,978 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:35:48,978 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:35:48,979 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 05:35:48,979 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 52 [2020-09-25 05:35:48,979 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-09-25 05:35:48,979 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 05:35:49,049 INFO L134 CoverageAnalysis]: Checked inductivity of 116 backedges. 89 proven. 0 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2020-09-25 05:35:49,049 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [558932466] [2020-09-25 05:35:49,050 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 05:35:49,050 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-25 05:35:49,050 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1059004766] [2020-09-25 05:35:49,051 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 05:35:49,051 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 05:35:49,051 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 05:35:49,051 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-25 05:35:49,052 INFO L87 Difference]: Start difference. First operand 2644 states and 3205 transitions. Second operand 5 states.