/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=1.0 --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_label54.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-25 09:04:17,015 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 09:04:17,019 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 09:04:17,061 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 09:04:17,061 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 09:04:17,072 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 09:04:17,075 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 09:04:17,077 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 09:04:17,080 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 09:04:17,082 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 09:04:17,083 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 09:04:17,086 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 09:04:17,086 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 09:04:17,089 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 09:04:17,091 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 09:04:17,092 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 09:04:17,094 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 09:04:17,095 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 09:04:17,096 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 09:04:17,105 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 09:04:17,107 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 09:04:17,108 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 09:04:17,109 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 09:04:17,111 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 09:04:17,114 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 09:04:17,114 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 09:04:17,115 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 09:04:17,117 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 09:04:17,118 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 09:04:17,119 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 09:04:17,120 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 09:04:17,120 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 09:04:17,121 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 09:04:17,122 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 09:04:17,123 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 09:04:17,124 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 09:04:17,124 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 09:04:17,125 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 09:04:17,125 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 09:04:17,126 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 09:04:17,128 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 09:04:17,129 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 09:04:17,172 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 09:04:17,172 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 09:04:17,174 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 09:04:17,175 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 09:04:17,175 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 09:04:17,175 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 09:04:17,176 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 09:04:17,176 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 09:04:17,176 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 09:04:17,176 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 09:04:17,177 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 09:04:17,177 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 09:04:17,177 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 09:04:17,178 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 09:04:17,178 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 09:04:17,178 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 09:04:17,179 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 09:04:17,179 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 09:04:17,179 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 09:04:17,179 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 09:04:17,179 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 09:04:17,180 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 09:04:17,180 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 09:04:17,180 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 09:04:17,180 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 09:04:17,180 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 09:04:17,181 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 09:04:17,181 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 09:04:17,181 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 09:04:17,181 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=1.0;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=1.0;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=1.0;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=1.0;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=1.0;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=1.0;log-additional-information=true; [2020-09-25 09:04:17,615 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 09:04:17,633 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 09:04:17,640 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 09:04:17,641 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 09:04:17,642 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 09:04:17,643 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem02_label54.c [2020-09-25 09:04:17,716 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/a4d986151/592834a380ed4111af34945303170282/FLAG7682be02d [2020-09-25 09:04:18,350 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 09:04:18,355 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem02_label54.c [2020-09-25 09:04:18,368 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/a4d986151/592834a380ed4111af34945303170282/FLAG7682be02d [2020-09-25 09:04:18,557 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/a4d986151/592834a380ed4111af34945303170282 [2020-09-25 09:04:18,572 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 09:04:18,578 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 09:04:18,579 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 09:04:18,580 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 09:04:18,584 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 09:04:18,585 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 09:04:18" (1/1) ... [2020-09-25 09:04:18,589 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3d876c0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 09:04:18, skipping insertion in model container [2020-09-25 09:04:18,589 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 09:04:18" (1/1) ... [2020-09-25 09:04:18,598 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 09:04:18,648 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 09:04:19,183 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 09:04:19,190 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 09:04:19,391 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 09:04:19,415 INFO L208 MainTranslator]: Completed translation [2020-09-25 09:04:19,415 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 09:04:19 WrapperNode [2020-09-25 09:04:19,416 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 09:04:19,416 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 09:04:19,417 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 09:04:19,417 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 09:04:19,432 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 09:04:19" (1/1) ... [2020-09-25 09:04:19,433 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 09:04:19" (1/1) ... [2020-09-25 09:04:19,450 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 09:04:19" (1/1) ... [2020-09-25 09:04:19,451 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 09:04:19" (1/1) ... [2020-09-25 09:04:19,490 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 09:04:19" (1/1) ... [2020-09-25 09:04:19,514 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 09:04:19" (1/1) ... [2020-09-25 09:04:19,524 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 09:04:19" (1/1) ... [2020-09-25 09:04:19,528 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 09:04:19,528 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 09:04:19,528 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 09:04:19,528 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 09:04:19,529 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 09:04:19" (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 09:04:19,593 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 09:04:19,593 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 09:04:19,593 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-09-25 09:04:19,594 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 09:04:19,594 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-09-25 09:04:19,594 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 09:04:19,594 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-25 09:04:19,594 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-09-25 09:04:19,594 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 09:04:19,595 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 09:04:19,595 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 09:04:20,841 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 09:04:20,841 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-09-25 09:04:20,850 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 09:04:20 BoogieIcfgContainer [2020-09-25 09:04:20,851 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 09:04:20,852 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 09:04:20,852 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 09:04:20,856 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 09:04:20,856 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 09:04:18" (1/3) ... [2020-09-25 09:04:20,857 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2bb4822a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 09:04:20, skipping insertion in model container [2020-09-25 09:04:20,858 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 09:04:19" (2/3) ... [2020-09-25 09:04:20,858 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2bb4822a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 09:04:20, skipping insertion in model container [2020-09-25 09:04:20,858 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 09:04:20" (3/3) ... [2020-09-25 09:04:20,860 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem02_label54.c [2020-09-25 09:04:20,872 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 09:04:20,884 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-25 09:04:20,909 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-25 09:04:20,948 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 09:04:20,948 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 09:04:20,948 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 09:04:20,949 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 09:04:20,949 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 09:04:20,949 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 09:04:20,949 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 09:04:20,949 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 09:04:20,981 INFO L276 IsEmpty]: Start isEmpty. Operand 527 states. [2020-09-25 09:04:21,000 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2020-09-25 09:04:21,001 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 09:04:21,002 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] [2020-09-25 09:04:21,003 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 09:04:21,011 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 09:04:21,012 INFO L82 PathProgramCache]: Analyzing trace with hash 79338610, now seen corresponding path program 1 times [2020-09-25 09:04:21,023 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 09:04:21,023 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1087928403] [2020-09-25 09:04:21,024 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 09:04:21,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:04:21,437 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:04:21,773 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:04:21,856 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:04:22,284 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:04:22,641 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:04:23,547 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:04:24,211 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:04:25,496 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:04:26,303 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:04:26,303 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 136 [2020-09-25 09:04:26,304 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-09-25 09:04:26,304 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-09-25 09:04:26,308 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:04:26,308 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:04:26,308 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 09:04:26,308 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 18 [2020-09-25 09:04:26,309 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 117 [2020-09-25 09:04:26,309 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 5 [2020-09-25 09:04:26,504 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 09:04:26,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:04:26,516 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:04:26,540 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:04:26,540 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 09:04:26,540 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:04:26,541 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 27 [2020-09-25 09:04:26,541 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:04:26,541 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:04:26,541 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 09:04:26,542 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 09:04:26,542 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-09-25 09:04:26,542 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:04:26,585 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 09:04:26,586 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1087928403] [2020-09-25 09:04:26,589 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 09:04:26,589 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-25 09:04:26,591 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1751439930] [2020-09-25 09:04:26,599 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-25 09:04:26,599 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 09:04:26,619 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-25 09:04:26,620 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-25 09:04:26,624 INFO L87 Difference]: Start difference. First operand 527 states. Second operand 4 states. [2020-09-25 09:04:28,724 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 09:04:28,725 INFO L93 Difference]: Finished difference Result 1386 states and 1837 transitions. [2020-09-25 09:04:28,726 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-25 09:04:28,728 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 127 [2020-09-25 09:04:28,729 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 09:04:28,774 INFO L225 Difference]: With dead ends: 1386 [2020-09-25 09:04:28,775 INFO L226 Difference]: Without dead ends: 787 [2020-09-25 09:04:28,788 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-09-25 09:04:28,813 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 787 states. [2020-09-25 09:04:28,893 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 787 to 733. [2020-09-25 09:04:28,895 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 733 states. [2020-09-25 09:04:28,899 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 733 states to 733 states and 884 transitions. [2020-09-25 09:04:28,901 INFO L78 Accepts]: Start accepts. Automaton has 733 states and 884 transitions. Word has length 127 [2020-09-25 09:04:28,902 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 09:04:28,902 INFO L479 AbstractCegarLoop]: Abstraction has 733 states and 884 transitions. [2020-09-25 09:04:28,902 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-25 09:04:28,903 INFO L276 IsEmpty]: Start isEmpty. Operand 733 states and 884 transitions. [2020-09-25 09:04:28,909 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2020-09-25 09:04:28,910 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 09:04:28,910 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] [2020-09-25 09:04:28,911 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 09:04:28,911 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 09:04:28,911 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 09:04:28,911 INFO L82 PathProgramCache]: Analyzing trace with hash -1605843042, now seen corresponding path program 1 times [2020-09-25 09:04:28,912 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 09:04:28,912 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1290123194] [2020-09-25 09:04:28,912 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 09:04:28,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:04:29,019 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:04:29,088 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:04:29,397 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:04:29,534 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:04:30,344 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:04:30,635 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:04:31,192 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:04:31,557 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:04:33,988 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:04:33,989 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 156 [2020-09-25 09:04:33,989 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-09-25 09:04:33,990 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5006 [2020-09-25 09:04:33,990 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:04:33,991 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:04:33,991 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-25 09:04:33,991 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 20 [2020-09-25 09:04:33,992 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 135 [2020-09-25 09:04:33,992 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:04:34,146 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 09:04:34,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:04:34,155 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:04:34,175 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:04:34,175 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 09:04:34,176 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:04:34,176 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 23 [2020-09-25 09:04:34,176 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:04:34,176 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:04:34,177 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 09:04:34,177 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 09:04:34,177 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-09-25 09:04:34,177 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:04:34,199 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-25 09:04:34,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:04:34,205 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:04:34,217 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:04:34,228 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:04:34,228 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-09-25 09:04:34,228 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 09:04:34,229 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 25 [2020-09-25 09:04:34,229 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:04:34,229 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:04:34,229 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 09:04:34,230 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 09:04:34,230 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-09-25 09:04:34,230 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:04:34,270 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2020-09-25 09:04:34,271 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1290123194] [2020-09-25 09:04:34,271 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 09:04:34,271 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-09-25 09:04:34,272 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1045854359] [2020-09-25 09:04:34,274 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-25 09:04:34,274 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 09:04:34,274 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-25 09:04:34,275 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-09-25 09:04:34,275 INFO L87 Difference]: Start difference. First operand 733 states and 884 transitions. Second operand 6 states. [2020-09-25 09:04:36,151 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 09:04:36,151 INFO L93 Difference]: Finished difference Result 1761 states and 2227 transitions. [2020-09-25 09:04:36,152 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-09-25 09:04:36,152 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 145 [2020-09-25 09:04:36,153 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 09:04:36,160 INFO L225 Difference]: With dead ends: 1761 [2020-09-25 09:04:36,160 INFO L226 Difference]: Without dead ends: 1050 [2020-09-25 09:04:36,163 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=23, Unknown=0, NotChecked=0, Total=42 [2020-09-25 09:04:36,165 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1050 states. [2020-09-25 09:04:36,201 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1050 to 1038. [2020-09-25 09:04:36,202 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1038 states. [2020-09-25 09:04:36,207 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1038 states to 1038 states and 1286 transitions. [2020-09-25 09:04:36,207 INFO L78 Accepts]: Start accepts. Automaton has 1038 states and 1286 transitions. Word has length 145 [2020-09-25 09:04:36,208 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 09:04:36,208 INFO L479 AbstractCegarLoop]: Abstraction has 1038 states and 1286 transitions. [2020-09-25 09:04:36,208 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-09-25 09:04:36,209 INFO L276 IsEmpty]: Start isEmpty. Operand 1038 states and 1286 transitions. [2020-09-25 09:04:36,215 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 162 [2020-09-25 09:04:36,216 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 09:04:36,216 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 09:04:36,216 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-25 09:04:36,216 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 09:04:36,217 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 09:04:36,217 INFO L82 PathProgramCache]: Analyzing trace with hash -1464054185, now seen corresponding path program 1 times [2020-09-25 09:04:36,217 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 09:04:36,218 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [526734600] [2020-09-25 09:04:36,218 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 09:04:36,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:04:36,257 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:04:36,345 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:04:36,948 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:04:37,017 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:04:37,418 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:04:37,570 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:04:40,412 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:04:40,413 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 172 [2020-09-25 09:04:40,413 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-09-25 09:04:40,413 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4172 [2020-09-25 09:04:40,414 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:04:40,414 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:04:40,414 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 09:04:40,414 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 54 [2020-09-25 09:04:40,416 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 117 [2020-09-25 09:04:40,416 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 09:04:40,524 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 09:04:40,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:04:40,530 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:04:40,540 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:04:40,540 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 09:04:40,540 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:04:40,540 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-09-25 09:04:40,541 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:04:40,541 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:04:40,541 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 09:04:40,541 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 09:04:40,541 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 09:04:40,542 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:04:40,561 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-25 09:04:40,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:04:40,574 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:04:40,599 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:04:40,599 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-09-25 09:04:40,599 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:04:40,600 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 29 [2020-09-25 09:04:40,600 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:04:40,600 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:04:40,600 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 09:04:40,600 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 09:04:40,601 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-09-25 09:04:40,601 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:04:40,647 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 22 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 09:04:40,648 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [526734600] [2020-09-25 09:04:40,648 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 09:04:40,648 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-09-25 09:04:40,648 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [664088204] [2020-09-25 09:04:40,649 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-25 09:04:40,649 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 09:04:40,650 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-25 09:04:40,650 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-09-25 09:04:40,650 INFO L87 Difference]: Start difference. First operand 1038 states and 1286 transitions. Second operand 6 states. [2020-09-25 09:04:43,014 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 09:04:43,014 INFO L93 Difference]: Finished difference Result 2830 states and 3649 transitions. [2020-09-25 09:04:43,015 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-09-25 09:04:43,015 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 161 [2020-09-25 09:04:43,016 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 09:04:43,023 INFO L225 Difference]: With dead ends: 2830 [2020-09-25 09:04:43,023 INFO L226 Difference]: Without dead ends: 1129 [2020-09-25 09:04:43,028 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-09-25 09:04:43,031 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1129 states. [2020-09-25 09:04:43,067 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1129 to 1117. [2020-09-25 09:04:43,067 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1117 states. [2020-09-25 09:04:43,073 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1117 states to 1117 states and 1349 transitions. [2020-09-25 09:04:43,073 INFO L78 Accepts]: Start accepts. Automaton has 1117 states and 1349 transitions. Word has length 161 [2020-09-25 09:04:43,074 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 09:04:43,074 INFO L479 AbstractCegarLoop]: Abstraction has 1117 states and 1349 transitions. [2020-09-25 09:04:43,074 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-09-25 09:04:43,074 INFO L276 IsEmpty]: Start isEmpty. Operand 1117 states and 1349 transitions. [2020-09-25 09:04:43,079 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 166 [2020-09-25 09:04:43,079 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 09:04:43,080 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, 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 09:04:43,080 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-25 09:04:43,080 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 09:04:43,081 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 09:04:43,081 INFO L82 PathProgramCache]: Analyzing trace with hash -1343420525, now seen corresponding path program 1 times [2020-09-25 09:04:43,081 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 09:04:43,081 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1572057777] [2020-09-25 09:04:43,081 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 09:04:43,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:04:43,128 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:04:43,210 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:04:43,440 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:04:44,190 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:04:44,742 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:04:48,113 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:04:48,113 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 176 [2020-09-25 09:04:48,113 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-09-25 09:04:48,113 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5004 [2020-09-25 09:04:48,114 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:04:48,114 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:04:48,114 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-25 09:04:48,114 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 59 [2020-09-25 09:04:48,114 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 96 [2020-09-25 09:04:48,115 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:04:48,277 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 09:04:48,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:04:48,282 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:04:48,291 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:04:48,291 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 09:04:48,292 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:04:48,292 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-09-25 09:04:48,292 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:04:48,292 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:04:48,293 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 09:04:48,293 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 09:04:48,293 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 09:04:48,294 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:04:48,321 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-25 09:04:48,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:04:48,338 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:04:48,414 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:04:48,414 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-09-25 09:04:48,414 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:04:48,415 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 82 [2020-09-25 09:04:48,415 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:04:48,415 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:04:48,416 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 09:04:48,419 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 09:04:48,420 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-09-25 09:04:48,420 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-09-25 09:04:48,687 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 28 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 09:04:48,690 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1572057777] [2020-09-25 09:04:48,690 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 09:04:48,690 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-09-25 09:04:48,691 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [496490905] [2020-09-25 09:04:48,691 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-25 09:04:48,692 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 09:04:48,692 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-25 09:04:48,697 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2020-09-25 09:04:48,697 INFO L87 Difference]: Start difference. First operand 1117 states and 1349 transitions. Second operand 8 states. [2020-09-25 09:04:52,164 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 09:04:52,164 INFO L93 Difference]: Finished difference Result 3332 states and 4281 transitions. [2020-09-25 09:04:52,165 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-09-25 09:04:52,165 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 165 [2020-09-25 09:04:52,166 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 09:04:52,178 INFO L225 Difference]: With dead ends: 3332 [2020-09-25 09:04:52,178 INFO L226 Difference]: Without dead ends: 2144 [2020-09-25 09:04:52,185 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 8 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=42, Invalid=68, Unknown=0, NotChecked=0, Total=110 [2020-09-25 09:04:52,188 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2144 states. [2020-09-25 09:04:52,247 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2144 to 2092. [2020-09-25 09:04:52,248 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2092 states. [2020-09-25 09:04:52,256 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2092 states to 2092 states and 2497 transitions. [2020-09-25 09:04:52,256 INFO L78 Accepts]: Start accepts. Automaton has 2092 states and 2497 transitions. Word has length 165 [2020-09-25 09:04:52,256 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 09:04:52,256 INFO L479 AbstractCegarLoop]: Abstraction has 2092 states and 2497 transitions. [2020-09-25 09:04:52,257 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-09-25 09:04:52,257 INFO L276 IsEmpty]: Start isEmpty. Operand 2092 states and 2497 transitions. [2020-09-25 09:04:52,265 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 190 [2020-09-25 09:04:52,265 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 09:04:52,266 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 09:04:52,266 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-25 09:04:52,266 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 09:04:52,266 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 09:04:52,266 INFO L82 PathProgramCache]: Analyzing trace with hash 207491829, now seen corresponding path program 1 times [2020-09-25 09:04:52,267 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 09:04:52,267 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1645780386] [2020-09-25 09:04:52,267 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 09:04:52,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:04:52,321 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:04:52,385 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:04:52,528 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:04:52,574 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:04:53,073 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:04:53,980 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:04:57,305 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:04:57,305 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 202 [2020-09-25 09:04:57,306 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-09-25 09:04:57,306 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5008 [2020-09-25 09:04:57,306 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:04:57,306 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:04:57,306 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 09:04:57,306 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 88 [2020-09-25 09:04:57,307 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 113 [2020-09-25 09:04:57,307 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 09:04:57,448 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 09:04:57,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:04:57,454 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:04:57,464 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:04:57,465 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 09:04:57,465 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:04:57,465 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-09-25 09:04:57,466 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:04:57,466 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:04:57,466 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 09:04:57,467 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 09:04:57,467 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 09:04:57,467 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:04:57,485 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-25 09:04:57,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:04:57,488 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:04:57,495 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:04:57,495 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-09-25 09:04:57,496 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:04:57,496 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-25 09:04:57,496 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:04:57,497 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:04:57,497 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 09:04:57,497 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 09:04:57,498 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 09:04:57,498 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:04:57,500 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2020-09-25 09:04:57,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:04:57,518 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:04:57,562 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:04:57,562 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 40 [2020-09-25 09:04:57,563 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:04:57,563 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 52 [2020-09-25 09:04:57,563 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:04:57,563 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:04:57,564 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 09:04:57,564 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 09:04:57,564 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 32 [2020-09-25 09:04:57,564 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:04:57,671 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 46 proven. 2 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2020-09-25 09:04:57,672 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1645780386] [2020-09-25 09:04:57,672 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 09:04:57,672 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-09-25 09:04:57,672 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1136504253] [2020-09-25 09:04:57,673 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 09:04:57,673 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 09:04:57,673 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 09:04:57,673 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-25 09:04:57,674 INFO L87 Difference]: Start difference. First operand 2092 states and 2497 transitions. Second operand 5 states. [2020-09-25 09:04:59,537 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 09:04:59,538 INFO L93 Difference]: Finished difference Result 4904 states and 6019 transitions. [2020-09-25 09:04:59,539 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 09:04:59,539 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 189 [2020-09-25 09:04:59,540 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 09:04:59,553 INFO L225 Difference]: With dead ends: 4904 [2020-09-25 09:04:59,553 INFO L226 Difference]: Without dead ends: 2834 [2020-09-25 09:04:59,559 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 8 SyntacticMatches, 1 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 09:04:59,563 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2834 states. [2020-09-25 09:04:59,620 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2834 to 2720. [2020-09-25 09:04:59,620 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2720 states. [2020-09-25 09:04:59,629 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2720 states to 2720 states and 3293 transitions. [2020-09-25 09:04:59,630 INFO L78 Accepts]: Start accepts. Automaton has 2720 states and 3293 transitions. Word has length 189 [2020-09-25 09:04:59,630 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 09:04:59,630 INFO L479 AbstractCegarLoop]: Abstraction has 2720 states and 3293 transitions. [2020-09-25 09:04:59,630 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 09:04:59,630 INFO L276 IsEmpty]: Start isEmpty. Operand 2720 states and 3293 transitions. [2020-09-25 09:04:59,638 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 197 [2020-09-25 09:04:59,639 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 09:04:59,639 INFO L422 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 09:04:59,639 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-25 09:04:59,639 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 09:04:59,640 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 09:04:59,640 INFO L82 PathProgramCache]: Analyzing trace with hash 924850542, now seen corresponding path program 1 times [2020-09-25 09:04:59,640 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 09:04:59,640 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1546958887] [2020-09-25 09:04:59,641 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 09:04:59,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:04:59,694 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:04:59,761 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:04:59,854 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:05:00,277 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:05:01,680 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:05:02,157 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:05:03,526 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:05:04,670 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:05:04,671 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 209 [2020-09-25 09:05:04,671 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-09-25 09:05:04,671 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-09-25 09:05:04,671 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:05:04,671 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:05:04,671 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-25 09:05:04,671 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 92 [2020-09-25 09:05:04,672 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 96 [2020-09-25 09:05:04,672 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 09:05:04,807 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 09:05:04,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:05:04,813 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:05:04,823 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:05:04,824 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 09:05:04,824 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:05:04,824 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-09-25 09:05:04,824 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:05:04,824 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:05:04,824 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 09:05:04,825 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 09:05:04,825 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 09:05:04,825 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 09:05:04,843 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-25 09:05:04,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:05:04,849 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:05:04,866 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:05:04,866 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 41 [2020-09-25 09:05:04,866 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:05:04,866 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-09-25 09:05:04,867 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:05:04,867 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:05:04,867 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 09:05:04,867 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 09:05:04,867 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 09:05:04,868 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:05:04,877 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2020-09-25 09:05:04,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:05:04,885 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:05:04,922 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:05:04,923 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-09-25 09:05:04,923 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:05:04,923 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 41 [2020-09-25 09:05:04,923 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:05:04,924 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:05:04,924 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 09:05:04,924 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 09:05:04,924 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-09-25 09:05:04,924 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:05:05,110 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 55 proven. 2 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2020-09-25 09:05:05,110 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1546958887] [2020-09-25 09:05:05,111 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 09:05:05,111 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-09-25 09:05:05,111 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [851675537] [2020-09-25 09:05:05,112 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-25 09:05:05,112 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 09:05:05,112 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-25 09:05:05,112 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2020-09-25 09:05:05,112 INFO L87 Difference]: Start difference. First operand 2720 states and 3293 transitions. Second operand 8 states.