/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_label03.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-25 09:01:49,055 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 09:01:49,058 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 09:01:49,085 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 09:01:49,085 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 09:01:49,086 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 09:01:49,088 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 09:01:49,090 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 09:01:49,092 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 09:01:49,093 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 09:01:49,094 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 09:01:49,095 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 09:01:49,096 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 09:01:49,097 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 09:01:49,098 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 09:01:49,100 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 09:01:49,101 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 09:01:49,102 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 09:01:49,104 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 09:01:49,106 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 09:01:49,108 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 09:01:49,109 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 09:01:49,110 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 09:01:49,111 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 09:01:49,114 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 09:01:49,114 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 09:01:49,115 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 09:01:49,116 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 09:01:49,116 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 09:01:49,117 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 09:01:49,117 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 09:01:49,118 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 09:01:49,119 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 09:01:49,120 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 09:01:49,121 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 09:01:49,122 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 09:01:49,122 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 09:01:49,123 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 09:01:49,123 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 09:01:49,127 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 09:01:49,127 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 09:01:49,128 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 09:01:49,161 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 09:01:49,161 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 09:01:49,162 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 09:01:49,163 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 09:01:49,163 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 09:01:49,163 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 09:01:49,163 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 09:01:49,164 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 09:01:49,164 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 09:01:49,164 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 09:01:49,164 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 09:01:49,164 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 09:01:49,165 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 09:01:49,165 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 09:01:49,165 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 09:01:49,165 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 09:01:49,165 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 09:01:49,166 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 09:01:49,166 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 09:01:49,166 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 09:01:49,166 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 09:01:49,166 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 09:01:49,167 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 09:01:49,167 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 09:01:49,167 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 09:01:49,167 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 09:01:49,167 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 09:01:49,168 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 09:01:49,168 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 09:01:49,168 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 09:01:49,632 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 09:01:49,659 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 09:01:49,667 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 09:01:49,668 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 09:01:49,669 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 09:01:49,670 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem02_label03.c [2020-09-25 09:01:49,751 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/06282f933/e70e17cb45014d21b9bc5adaf608a3bc/FLAGd14b52924 [2020-09-25 09:01:50,415 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 09:01:50,416 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem02_label03.c [2020-09-25 09:01:50,440 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/06282f933/e70e17cb45014d21b9bc5adaf608a3bc/FLAGd14b52924 [2020-09-25 09:01:50,631 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/06282f933/e70e17cb45014d21b9bc5adaf608a3bc [2020-09-25 09:01:50,646 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 09:01:50,653 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 09:01:50,654 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 09:01:50,655 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 09:01:50,660 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 09:01:50,661 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 09:01:50" (1/1) ... [2020-09-25 09:01:50,667 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1f78b0b2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 09:01:50, skipping insertion in model container [2020-09-25 09:01:50,667 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 09:01:50" (1/1) ... [2020-09-25 09:01:50,677 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 09:01:50,752 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 09:01:51,233 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 09:01:51,240 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 09:01:51,489 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 09:01:51,512 INFO L208 MainTranslator]: Completed translation [2020-09-25 09:01:51,512 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 09:01:51 WrapperNode [2020-09-25 09:01:51,513 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 09:01:51,513 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 09:01:51,514 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 09:01:51,514 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 09:01:51,528 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 09:01:51" (1/1) ... [2020-09-25 09:01:51,529 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 09:01:51" (1/1) ... [2020-09-25 09:01:51,551 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 09:01:51" (1/1) ... [2020-09-25 09:01:51,551 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 09:01:51" (1/1) ... [2020-09-25 09:01:51,593 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 09:01:51" (1/1) ... [2020-09-25 09:01:51,619 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 09:01:51" (1/1) ... [2020-09-25 09:01:51,627 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 09:01:51" (1/1) ... [2020-09-25 09:01:51,638 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 09:01:51,639 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 09:01:51,639 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 09:01:51,639 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 09:01:51,640 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 09:01:51" (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 09:01:51,721 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 09:01:51,721 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 09:01:51,721 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-09-25 09:01:51,721 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 09:01:51,721 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-09-25 09:01:51,721 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 09:01:51,722 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-25 09:01:51,722 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-09-25 09:01:51,722 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 09:01:51,722 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 09:01:51,722 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 09:01:53,095 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 09:01:53,095 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-09-25 09:01:53,107 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 09:01:53 BoogieIcfgContainer [2020-09-25 09:01:53,108 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 09:01:53,109 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 09:01:53,110 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 09:01:53,114 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 09:01:53,114 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 09:01:50" (1/3) ... [2020-09-25 09:01:53,115 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@60617e18 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 09:01:53, skipping insertion in model container [2020-09-25 09:01:53,115 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 09:01:51" (2/3) ... [2020-09-25 09:01:53,116 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@60617e18 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 09:01:53, skipping insertion in model container [2020-09-25 09:01:53,116 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 09:01:53" (3/3) ... [2020-09-25 09:01:53,118 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem02_label03.c [2020-09-25 09:01:53,133 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 09:01:53,144 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-25 09:01:53,167 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-25 09:01:53,212 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 09:01:53,213 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 09:01:53,213 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 09:01:53,213 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 09:01:53,214 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 09:01:53,214 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 09:01:53,214 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 09:01:53,214 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 09:01:53,260 INFO L276 IsEmpty]: Start isEmpty. Operand 527 states. [2020-09-25 09:01:53,296 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 156 [2020-09-25 09:01:53,296 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 09:01:53,298 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 09:01:53,298 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 09:01:53,308 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 09:01:53,308 INFO L82 PathProgramCache]: Analyzing trace with hash 1547939106, now seen corresponding path program 1 times [2020-09-25 09:01:53,322 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 09:01:53,322 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1803637987] [2020-09-25 09:01:53,323 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 09:01:53,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:01:53,761 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:01:54,136 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:01:54,516 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:01:54,977 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:01:56,206 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:01:56,391 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:01:57,679 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:01:58,650 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:01:58,651 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 164 [2020-09-25 09:01:58,651 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-09-25 09:01:58,651 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5014 [2020-09-25 09:01:58,655 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:01:58,655 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:01:58,655 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 09:01:58,656 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 22 [2020-09-25 09:01:58,656 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 141 [2020-09-25 09:01:58,656 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-09-25 09:01:58,899 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 09:01:58,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:01:58,917 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:01:58,942 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:01:58,942 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 09:01:58,942 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:01:58,943 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 31 [2020-09-25 09:01:58,943 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:01:58,943 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:01:58,943 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 09:01:58,944 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 09:01:58,944 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-09-25 09:01:58,944 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:01:59,042 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 09:01:59,044 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1803637987] [2020-09-25 09:01:59,047 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 09:01:59,047 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-25 09:01:59,049 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1598998506] [2020-09-25 09:01:59,060 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-25 09:01:59,060 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 09:01:59,084 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-25 09:01:59,085 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-25 09:01:59,089 INFO L87 Difference]: Start difference. First operand 527 states. Second operand 4 states. [2020-09-25 09:02:01,344 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 09:02:01,345 INFO L93 Difference]: Finished difference Result 1205 states and 1651 transitions. [2020-09-25 09:02:01,348 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-25 09:02:01,349 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 155 [2020-09-25 09:02:01,351 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 09:02:01,395 INFO L225 Difference]: With dead ends: 1205 [2020-09-25 09:02:01,395 INFO L226 Difference]: Without dead ends: 627 [2020-09-25 09:02:01,409 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 09:02:01,435 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 627 states. [2020-09-25 09:02:01,539 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 627 to 613. [2020-09-25 09:02:01,540 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 613 states. [2020-09-25 09:02:01,546 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 613 states to 613 states and 759 transitions. [2020-09-25 09:02:01,548 INFO L78 Accepts]: Start accepts. Automaton has 613 states and 759 transitions. Word has length 155 [2020-09-25 09:02:01,549 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 09:02:01,549 INFO L479 AbstractCegarLoop]: Abstraction has 613 states and 759 transitions. [2020-09-25 09:02:01,549 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-25 09:02:01,550 INFO L276 IsEmpty]: Start isEmpty. Operand 613 states and 759 transitions. [2020-09-25 09:02:01,555 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 190 [2020-09-25 09:02:01,555 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 09:02:01,555 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 09:02:01,556 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 09:02:01,556 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 09:02:01,556 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 09:02:01,557 INFO L82 PathProgramCache]: Analyzing trace with hash 372852103, now seen corresponding path program 1 times [2020-09-25 09:02:01,557 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 09:02:01,557 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [261363236] [2020-09-25 09:02:01,557 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 09:02:01,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:02:01,606 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:02:01,682 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:02:01,886 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:02:02,428 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:02:05,389 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:02:05,531 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:02:06,286 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:02:06,590 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:02:06,591 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 200 [2020-09-25 09:02:06,591 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-09-25 09:02:06,591 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5004 [2020-09-25 09:02:06,592 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:02:06,593 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:02:06,596 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 09:02:06,597 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 55 [2020-09-25 09:02:06,597 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 144 [2020-09-25 09:02:06,597 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 5 [2020-09-25 09:02:06,726 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 09:02:06,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:02:06,738 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:02:06,748 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:02:06,749 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 09:02:06,749 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:02:06,750 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-09-25 09:02:06,750 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:02:06,750 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:02:06,751 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 09:02:06,751 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 09:02:06,751 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 09:02:06,760 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 9 [2020-09-25 09:02:06,784 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-25 09:02:06,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:02:06,800 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:02:06,831 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:02:06,831 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-09-25 09:02:06,831 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:02:06,832 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 36 [2020-09-25 09:02:06,832 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:02:06,832 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:02:06,832 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 09:02:06,833 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 09:02:06,833 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 19 [2020-09-25 09:02:06,833 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:02:06,930 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 09:02:06,930 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [261363236] [2020-09-25 09:02:06,931 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 09:02:06,931 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-09-25 09:02:06,931 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1029420239] [2020-09-25 09:02:06,936 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 09:02:06,936 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 09:02:06,937 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 09:02:06,937 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-25 09:02:06,937 INFO L87 Difference]: Start difference. First operand 613 states and 759 transitions. Second operand 5 states. [2020-09-25 09:02:09,227 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 09:02:09,228 INFO L93 Difference]: Finished difference Result 1680 states and 2139 transitions. [2020-09-25 09:02:09,230 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 09:02:09,231 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 189 [2020-09-25 09:02:09,231 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 09:02:09,237 INFO L225 Difference]: With dead ends: 1680 [2020-09-25 09:02:09,237 INFO L226 Difference]: Without dead ends: 1089 [2020-09-25 09:02:09,240 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 09:02:09,243 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1089 states. [2020-09-25 09:02:09,274 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1089 to 968. [2020-09-25 09:02:09,274 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 968 states. [2020-09-25 09:02:09,279 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 968 states to 968 states and 1232 transitions. [2020-09-25 09:02:09,280 INFO L78 Accepts]: Start accepts. Automaton has 968 states and 1232 transitions. Word has length 189 [2020-09-25 09:02:09,280 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 09:02:09,280 INFO L479 AbstractCegarLoop]: Abstraction has 968 states and 1232 transitions. [2020-09-25 09:02:09,281 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 09:02:09,281 INFO L276 IsEmpty]: Start isEmpty. Operand 968 states and 1232 transitions. [2020-09-25 09:02:09,285 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 194 [2020-09-25 09:02:09,285 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 09:02:09,286 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 09:02:09,286 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-25 09:02:09,286 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 09:02:09,287 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 09:02:09,287 INFO L82 PathProgramCache]: Analyzing trace with hash 835170522, now seen corresponding path program 1 times [2020-09-25 09:02:09,287 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 09:02:09,287 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [581027820] [2020-09-25 09:02:09,288 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 09:02:09,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:02:09,371 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:02:09,456 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:02:09,990 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:02:10,071 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:02:11,326 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:02:11,474 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:02:14,225 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:02:14,349 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:02:14,387 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:02:14,388 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 204 [2020-09-25 09:02:14,388 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-09-25 09:02:14,388 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5055 [2020-09-25 09:02:14,389 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:02:14,389 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:02:14,389 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 09:02:14,389 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 61 [2020-09-25 09:02:14,389 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 142 [2020-09-25 09:02:14,390 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:02:14,521 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 09:02:14,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:02:14,526 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:02:14,540 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:02:14,540 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 09:02:14,540 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:02:14,541 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-09-25 09:02:14,541 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:02:14,541 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:02:14,541 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 09:02:14,542 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 09:02:14,542 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 09:02:14,542 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:02:14,563 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-25 09:02:14,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:02:14,578 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:02:14,611 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:02:14,611 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-09-25 09:02:14,611 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:02:14,612 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 39 [2020-09-25 09:02:14,612 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:02:14,612 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:02:14,612 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 09:02:14,612 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 09:02:14,613 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 25 [2020-09-25 09:02:14,613 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:02:14,677 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 09:02:14,677 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [581027820] [2020-09-25 09:02:14,677 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 09:02:14,678 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-09-25 09:02:14,678 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1637340689] [2020-09-25 09:02:14,679 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 09:02:14,680 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 09:02:14,680 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 09:02:14,680 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-25 09:02:14,681 INFO L87 Difference]: Start difference. First operand 968 states and 1232 transitions. Second operand 5 states. [2020-09-25 09:02:16,929 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 09:02:16,929 INFO L93 Difference]: Finished difference Result 2423 states and 3188 transitions. [2020-09-25 09:02:16,929 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 09:02:16,930 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 193 [2020-09-25 09:02:16,931 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 09:02:16,940 INFO L225 Difference]: With dead ends: 2423 [2020-09-25 09:02:16,940 INFO L226 Difference]: Without dead ends: 1477 [2020-09-25 09:02:16,945 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 6 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 09:02:16,947 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1477 states. [2020-09-25 09:02:16,990 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1477 to 1426. [2020-09-25 09:02:16,990 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1426 states. [2020-09-25 09:02:16,998 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1426 states to 1426 states and 1751 transitions. [2020-09-25 09:02:16,998 INFO L78 Accepts]: Start accepts. Automaton has 1426 states and 1751 transitions. Word has length 193 [2020-09-25 09:02:17,000 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 09:02:17,000 INFO L479 AbstractCegarLoop]: Abstraction has 1426 states and 1751 transitions. [2020-09-25 09:02:17,000 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 09:02:17,000 INFO L276 IsEmpty]: Start isEmpty. Operand 1426 states and 1751 transitions. [2020-09-25 09:02:17,007 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 213 [2020-09-25 09:02:17,007 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 09:02:17,007 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 09:02:17,008 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-25 09:02:17,009 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 09:02:17,010 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 09:02:17,010 INFO L82 PathProgramCache]: Analyzing trace with hash -1504338062, now seen corresponding path program 1 times [2020-09-25 09:02:17,010 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 09:02:17,011 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2124546620] [2020-09-25 09:02:17,011 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 09:02:17,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:02:17,084 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:02:17,151 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:02:17,226 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:02:17,713 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:02:22,071 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:02:22,072 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 225 [2020-09-25 09:02:22,072 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-25 09:02:22,072 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5025 [2020-09-25 09:02:22,073 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:02:22,073 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:02:22,073 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-25 09:02:22,073 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 80 [2020-09-25 09:02:22,073 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 101 [2020-09-25 09:02:22,074 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:02:22,353 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 09:02:22,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:02:22,359 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:02:22,371 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:02:22,372 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 09:02:22,372 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:02:22,372 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-09-25 09:02:22,373 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:02:22,373 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:02:22,373 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 09:02:22,373 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 09:02:22,373 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 09:02:22,374 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:02:22,397 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-25 09:02:22,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:02:22,400 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:02:22,407 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:02:22,407 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-09-25 09:02:22,408 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:02:22,408 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-25 09:02:22,408 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:02:22,408 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:02:22,408 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 09:02:22,409 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 09:02:22,409 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 09:02:22,409 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:02:22,412 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2020-09-25 09:02:22,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:02:22,428 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:02:22,531 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:02:22,531 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 36 [2020-09-25 09:02:22,531 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:02:22,532 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 110 [2020-09-25 09:02:22,532 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:02:22,532 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:02:22,532 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 09:02:22,533 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 09:02:22,533 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-09-25 09:02:22,533 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:02:22,856 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 09:02:22,858 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2124546620] [2020-09-25 09:02:22,858 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 09:02:22,859 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-09-25 09:02:22,859 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1780052118] [2020-09-25 09:02:22,861 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-25 09:02:22,861 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 09:02:22,862 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-25 09:02:22,866 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2020-09-25 09:02:22,866 INFO L87 Difference]: Start difference. First operand 1426 states and 1751 transitions. Second operand 8 states. [2020-09-25 09:02:25,708 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 09:02:25,708 INFO L93 Difference]: Finished difference Result 3242 states and 4123 transitions. [2020-09-25 09:02:25,709 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-09-25 09:02:25,709 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 212 [2020-09-25 09:02:25,710 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 09:02:25,720 INFO L225 Difference]: With dead ends: 3242 [2020-09-25 09:02:25,720 INFO L226 Difference]: Without dead ends: 1740 [2020-09-25 09:02:25,726 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 8 SyntacticMatches, 2 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=34, Invalid=56, Unknown=0, NotChecked=0, Total=90 [2020-09-25 09:02:25,729 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1740 states. [2020-09-25 09:02:25,777 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1740 to 1722. [2020-09-25 09:02:25,777 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1722 states. [2020-09-25 09:02:25,785 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1722 states to 1722 states and 2075 transitions. [2020-09-25 09:02:25,786 INFO L78 Accepts]: Start accepts. Automaton has 1722 states and 2075 transitions. Word has length 212 [2020-09-25 09:02:25,786 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 09:02:25,787 INFO L479 AbstractCegarLoop]: Abstraction has 1722 states and 2075 transitions. [2020-09-25 09:02:25,787 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-09-25 09:02:25,787 INFO L276 IsEmpty]: Start isEmpty. Operand 1722 states and 2075 transitions. [2020-09-25 09:02:25,795 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 220 [2020-09-25 09:02:25,795 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 09:02:25,796 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 09:02:25,796 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-25 09:02:25,796 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 09:02:25,796 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 09:02:25,797 INFO L82 PathProgramCache]: Analyzing trace with hash 1577293473, now seen corresponding path program 1 times [2020-09-25 09:02:25,797 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 09:02:25,797 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1661732084] [2020-09-25 09:02:25,797 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 09:02:25,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:02:25,863 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:02:25,956 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:02:26,076 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:02:26,396 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:02:27,379 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:02:30,835 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:02:30,835 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 232 [2020-09-25 09:02:30,836 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-09-25 09:02:30,836 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-09-25 09:02:30,836 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:02:30,837 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:02:30,837 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-25 09:02:30,838 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 86 [2020-09-25 09:02:30,838 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 111 [2020-09-25 09:02:30,846 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 9 [2020-09-25 09:02:31,091 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 09:02:31,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:02:31,097 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:02:31,109 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:02:31,110 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 09:02:31,110 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:02:31,111 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-09-25 09:02:31,111 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:02:31,112 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:02:31,112 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 09:02:31,113 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 09:02:31,113 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 09:02:31,114 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 09:02:31,142 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-25 09:02:31,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:02:31,150 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:02:31,171 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:02:31,172 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-09-25 09:02:31,173 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:02:31,173 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 24 [2020-09-25 09:02:31,173 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:02:31,174 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:02:31,174 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 09:02:31,175 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 09:02:31,175 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 09:02:31,176 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 09:02:31,186 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2020-09-25 09:02:31,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:02:31,194 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:02:31,259 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:02:31,259 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-09-25 09:02:31,259 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:02:31,260 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 67 [2020-09-25 09:02:31,260 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:02:31,260 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:02:31,261 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 09:02:31,261 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 09:02:31,261 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-09-25 09:02:31,262 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:02:31,547 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 09:02:31,548 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1661732084] [2020-09-25 09:02:31,548 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 09:02:31,549 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-09-25 09:02:31,549 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [561473231] [2020-09-25 09:02:31,550 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-09-25 09:02:31,550 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 09:02:31,550 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-09-25 09:02:31,550 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2020-09-25 09:02:31,551 INFO L87 Difference]: Start difference. First operand 1722 states and 2075 transitions. Second operand 10 states. [2020-09-25 09:02:36,595 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 09:02:36,596 INFO L93 Difference]: Finished difference Result 5202 states and 6708 transitions. [2020-09-25 09:02:36,596 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-09-25 09:02:36,596 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 219 [2020-09-25 09:02:36,597 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 09:02:36,616 INFO L225 Difference]: With dead ends: 5202 [2020-09-25 09:02:36,617 INFO L226 Difference]: Without dead ends: 3083 [2020-09-25 09:02:36,626 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 10 SyntacticMatches, 1 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=66, Invalid=116, Unknown=0, NotChecked=0, Total=182 [2020-09-25 09:02:36,630 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3083 states. [2020-09-25 09:02:36,734 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3083 to 3071. [2020-09-25 09:02:36,734 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3071 states. [2020-09-25 09:02:36,746 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3071 states to 3071 states and 3701 transitions. [2020-09-25 09:02:36,747 INFO L78 Accepts]: Start accepts. Automaton has 3071 states and 3701 transitions. Word has length 219 [2020-09-25 09:02:36,747 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 09:02:36,747 INFO L479 AbstractCegarLoop]: Abstraction has 3071 states and 3701 transitions. [2020-09-25 09:02:36,747 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-09-25 09:02:36,748 INFO L276 IsEmpty]: Start isEmpty. Operand 3071 states and 3701 transitions. [2020-09-25 09:02:36,763 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 257 [2020-09-25 09:02:36,763 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 09:02:36,764 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 09:02:36,764 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-25 09:02:36,764 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 09:02:36,764 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 09:02:36,765 INFO L82 PathProgramCache]: Analyzing trace with hash -248213104, now seen corresponding path program 1 times [2020-09-25 09:02:36,765 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 09:02:36,765 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [781646271] [2020-09-25 09:02:36,765 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 09:02:36,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:02:36,835 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:02:36,929 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:02:37,276 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:02:37,369 FATAL L256 erpolLogProxyWrapper]: Now shrinking...