/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=SMALLESTAMONGWIDE --traceabstraction.additional.smt.options tolerance=0.3 --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/Problem14_label30.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-25 12:28:15,403 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 12:28:15,408 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 12:28:15,456 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 12:28:15,456 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 12:28:15,467 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 12:28:15,470 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 12:28:15,474 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 12:28:15,477 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 12:28:15,511 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 12:28:15,514 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 12:28:15,516 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 12:28:15,516 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 12:28:15,523 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 12:28:15,526 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 12:28:15,529 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 12:28:15,532 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 12:28:15,533 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 12:28:15,535 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 12:28:15,537 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 12:28:15,539 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 12:28:15,540 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 12:28:15,541 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 12:28:15,544 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 12:28:15,547 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 12:28:15,547 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 12:28:15,547 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 12:28:15,549 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 12:28:15,549 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 12:28:15,550 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 12:28:15,551 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 12:28:15,552 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 12:28:15,553 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 12:28:15,555 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 12:28:15,556 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 12:28:15,557 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 12:28:15,558 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 12:28:15,558 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 12:28:15,558 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 12:28:15,559 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 12:28:15,560 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 12:28:15,561 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 12:28:15,587 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 12:28:15,587 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 12:28:15,589 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 12:28:15,589 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 12:28:15,589 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 12:28:15,590 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 12:28:15,590 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 12:28:15,590 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 12:28:15,590 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 12:28:15,590 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 12:28:15,591 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 12:28:15,591 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 12:28:15,591 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 12:28:15,591 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 12:28:15,591 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 12:28:15,592 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 12:28:15,592 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 12:28:15,592 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 12:28:15,592 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 12:28:15,593 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 12:28:15,593 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 12:28:15,593 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 12:28:15,593 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 12:28:15,594 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 12:28:15,594 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 12:28:15,594 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 12:28:15,594 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 12:28:15,594 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 12:28:15,595 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 12:28:15,595 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=SMALLESTAMONGWIDE;tolerance=0.3;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=SMALLESTAMONGWIDE;tolerance=0.3;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=SMALLESTAMONGWIDE;tolerance=0.3;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=SMALLESTAMONGWIDE;tolerance=0.3;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=SMALLESTAMONGWIDE;tolerance=0.3;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=SMALLESTAMONGWIDE;tolerance=0.3;log-additional-information=true; [2020-09-25 12:28:16,066 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 12:28:16,097 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 12:28:16,102 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 12:28:16,104 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 12:28:16,106 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 12:28:16,107 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem14_label30.c [2020-09-25 12:28:16,190 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/e6ba9e07d/fe1ed7a766264e08a177051acbc598d0/FLAG6c92ecd27 [2020-09-25 12:28:16,890 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 12:28:16,891 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem14_label30.c [2020-09-25 12:28:16,910 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/e6ba9e07d/fe1ed7a766264e08a177051acbc598d0/FLAG6c92ecd27 [2020-09-25 12:28:17,082 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/e6ba9e07d/fe1ed7a766264e08a177051acbc598d0 [2020-09-25 12:28:17,097 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 12:28:17,103 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 12:28:17,105 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 12:28:17,105 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 12:28:17,109 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 12:28:17,110 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 12:28:17" (1/1) ... [2020-09-25 12:28:17,115 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2a2283 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:28:17, skipping insertion in model container [2020-09-25 12:28:17,115 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 12:28:17" (1/1) ... [2020-09-25 12:28:17,125 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 12:28:17,198 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 12:28:17,814 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 12:28:17,820 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 12:28:17,938 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 12:28:17,963 INFO L208 MainTranslator]: Completed translation [2020-09-25 12:28:17,963 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:28:17 WrapperNode [2020-09-25 12:28:17,964 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 12:28:17,965 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 12:28:17,965 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 12:28:17,965 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 12:28:17,985 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:28:17" (1/1) ... [2020-09-25 12:28:17,985 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:28:17" (1/1) ... [2020-09-25 12:28:18,011 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:28:17" (1/1) ... [2020-09-25 12:28:18,012 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:28:17" (1/1) ... [2020-09-25 12:28:18,059 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:28:17" (1/1) ... [2020-09-25 12:28:18,081 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:28:17" (1/1) ... [2020-09-25 12:28:18,088 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:28:17" (1/1) ... [2020-09-25 12:28:18,103 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 12:28:18,104 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 12:28:18,104 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 12:28:18,104 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 12:28:18,106 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:28:17" (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 12:28:18,198 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 12:28:18,199 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 12:28:18,199 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-09-25 12:28:18,199 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 12:28:18,199 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-09-25 12:28:18,200 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 12:28:18,200 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-25 12:28:18,200 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-09-25 12:28:18,200 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 12:28:18,201 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 12:28:18,201 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 12:28:20,013 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 12:28:20,013 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-09-25 12:28:20,024 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 12:28:20 BoogieIcfgContainer [2020-09-25 12:28:20,025 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 12:28:20,027 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 12:28:20,027 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 12:28:20,032 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 12:28:20,032 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 12:28:17" (1/3) ... [2020-09-25 12:28:20,034 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1af7c353 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 12:28:20, skipping insertion in model container [2020-09-25 12:28:20,034 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:28:17" (2/3) ... [2020-09-25 12:28:20,034 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1af7c353 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 12:28:20, skipping insertion in model container [2020-09-25 12:28:20,035 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 12:28:20" (3/3) ... [2020-09-25 12:28:20,037 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem14_label30.c [2020-09-25 12:28:20,052 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 12:28:20,065 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-25 12:28:20,089 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-25 12:28:20,127 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 12:28:20,127 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 12:28:20,127 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 12:28:20,128 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 12:28:20,128 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 12:28:20,128 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 12:28:20,128 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 12:28:20,128 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 12:28:20,166 INFO L276 IsEmpty]: Start isEmpty. Operand 678 states. [2020-09-25 12:28:20,179 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2020-09-25 12:28:20,179 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 12:28:20,181 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] [2020-09-25 12:28:20,182 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 12:28:20,191 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 12:28:20,191 INFO L82 PathProgramCache]: Analyzing trace with hash 2082104676, now seen corresponding path program 1 times [2020-09-25 12:28:20,204 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 12:28:20,204 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [658661623] [2020-09-25 12:28:20,205 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 12:28:20,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:28:20,550 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:28:20,875 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:28:21,292 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:28:21,292 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 71 [2020-09-25 12:28:21,293 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 12:28:21,293 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 844 [2020-09-25 12:28:21,297 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:28:21,298 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:28:21,298 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 12:28:21,298 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-09-25 12:28:21,299 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 56 [2020-09-25 12:28:21,299 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 5 [2020-09-25 12:28:21,488 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 12:28:21,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:28:21,502 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:28:21,523 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:28:21,524 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 12:28:21,525 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:28:21,525 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 25 [2020-09-25 12:28:21,525 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:28:21,526 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:28:21,526 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 12:28:21,526 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:28:21,527 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-09-25 12:28:21,527 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:28:21,561 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 12:28:21,562 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [658661623] [2020-09-25 12:28:21,565 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 12:28:21,565 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-25 12:28:21,566 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [43860239] [2020-09-25 12:28:21,574 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-25 12:28:21,574 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 12:28:21,592 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-25 12:28:21,594 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-25 12:28:21,596 INFO L87 Difference]: Start difference. First operand 678 states. Second operand 4 states. [2020-09-25 12:28:24,653 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 12:28:24,654 INFO L93 Difference]: Finished difference Result 1663 states and 2205 transitions. [2020-09-25 12:28:24,654 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-25 12:28:24,656 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 62 [2020-09-25 12:28:24,656 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 12:28:24,683 INFO L225 Difference]: With dead ends: 1663 [2020-09-25 12:28:24,683 INFO L226 Difference]: Without dead ends: 911 [2020-09-25 12:28:24,697 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-09-25 12:28:24,720 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 911 states. [2020-09-25 12:28:24,811 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 911 to 891. [2020-09-25 12:28:24,814 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 891 states. [2020-09-25 12:28:24,825 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 891 states to 891 states and 1043 transitions. [2020-09-25 12:28:24,828 INFO L78 Accepts]: Start accepts. Automaton has 891 states and 1043 transitions. Word has length 62 [2020-09-25 12:28:24,828 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 12:28:24,829 INFO L479 AbstractCegarLoop]: Abstraction has 891 states and 1043 transitions. [2020-09-25 12:28:24,829 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-25 12:28:24,829 INFO L276 IsEmpty]: Start isEmpty. Operand 891 states and 1043 transitions. [2020-09-25 12:28:24,838 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 157 [2020-09-25 12:28:24,838 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 12:28:24,838 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, 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] [2020-09-25 12:28:24,839 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 12:28:24,839 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 12:28:24,839 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 12:28:24,840 INFO L82 PathProgramCache]: Analyzing trace with hash 589777722, now seen corresponding path program 1 times [2020-09-25 12:28:24,840 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 12:28:24,840 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1232199139] [2020-09-25 12:28:24,841 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 12:28:24,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:28:24,930 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:28:25,031 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:28:25,185 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:28:26,046 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:28:26,128 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:28:29,363 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:28:29,890 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:28:29,891 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 167 [2020-09-25 12:28:29,891 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-09-25 12:28:29,891 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-09-25 12:28:29,891 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:28:29,892 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:28:29,892 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 12:28:29,893 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-09-25 12:28:29,893 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 95 [2020-09-25 12:28:29,893 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:28:29,967 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 12:28:29,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:28:29,977 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:28:29,993 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:28:29,994 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 12:28:30,016 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:28:30,017 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-09-25 12:28:30,017 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:28:30,017 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:28:30,018 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 12:28:30,018 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:28:30,019 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-25 12:28:30,019 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:28:30,039 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 12:28:30,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:28:30,078 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:28:30,237 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:28:30,237 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 90 [2020-09-25 12:28:30,237 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:28:30,238 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 176 [2020-09-25 12:28:30,238 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:28:30,238 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:28:30,239 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 12:28:30,239 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 12:28:30,239 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 89 [2020-09-25 12:28:30,239 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:28:30,427 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 46 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 12:28:30,428 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1232199139] [2020-09-25 12:28:30,428 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 12:28:30,428 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-09-25 12:28:30,429 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1597223483] [2020-09-25 12:28:30,431 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-25 12:28:30,431 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 12:28:30,432 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-25 12:28:30,432 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-09-25 12:28:30,432 INFO L87 Difference]: Start difference. First operand 891 states and 1043 transitions. Second operand 7 states. [2020-09-25 12:28:33,259 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 12:28:33,259 INFO L93 Difference]: Finished difference Result 2191 states and 2666 transitions. [2020-09-25 12:28:33,260 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-09-25 12:28:33,260 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 156 [2020-09-25 12:28:33,261 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 12:28:33,268 INFO L225 Difference]: With dead ends: 2191 [2020-09-25 12:28:33,268 INFO L226 Difference]: Without dead ends: 1315 [2020-09-25 12:28:33,272 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2020-09-25 12:28:33,277 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1315 states. [2020-09-25 12:28:33,313 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1315 to 1277. [2020-09-25 12:28:33,313 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1277 states. [2020-09-25 12:28:33,320 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1277 states to 1277 states and 1515 transitions. [2020-09-25 12:28:33,321 INFO L78 Accepts]: Start accepts. Automaton has 1277 states and 1515 transitions. Word has length 156 [2020-09-25 12:28:33,324 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 12:28:33,324 INFO L479 AbstractCegarLoop]: Abstraction has 1277 states and 1515 transitions. [2020-09-25 12:28:33,324 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-25 12:28:33,324 INFO L276 IsEmpty]: Start isEmpty. Operand 1277 states and 1515 transitions. [2020-09-25 12:28:33,341 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 240 [2020-09-25 12:28:33,342 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 12:28:33,343 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 12:28:33,343 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-25 12:28:33,344 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 12:28:33,344 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 12:28:33,344 INFO L82 PathProgramCache]: Analyzing trace with hash -1204524291, now seen corresponding path program 1 times [2020-09-25 12:28:33,345 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 12:28:33,345 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1449554942] [2020-09-25 12:28:33,345 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 12:28:33,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:28:33,459 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:28:33,607 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:28:33,702 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:28:33,816 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:28:33,947 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:28:35,015 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:28:35,269 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:28:35,654 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:28:38,437 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:28:38,437 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 252 [2020-09-25 12:28:38,438 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-09-25 12:28:38,438 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5022 [2020-09-25 12:28:38,438 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:28:38,438 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:28:38,439 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-09-25 12:28:38,439 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-09-25 12:28:38,439 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 129 [2020-09-25 12:28:38,439 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:28:38,553 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 12:28:38,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:28:38,562 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:28:38,584 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:28:38,584 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 12:28:38,584 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:28:38,585 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 24 [2020-09-25 12:28:38,585 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:28:38,585 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:28:38,585 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 12:28:38,586 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:28:38,586 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-09-25 12:28:38,587 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:28:38,610 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 12:28:38,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:28:38,640 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:28:38,946 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:28:38,946 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 79 [2020-09-25 12:28:38,946 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:28:38,947 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 319 [2020-09-25 12:28:38,947 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:28:38,947 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:28:38,948 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-25 12:28:38,948 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 12:28:38,948 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 78 [2020-09-25 12:28:38,949 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:28:39,099 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2020-09-25 12:28:39,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:28:39,136 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:28:39,199 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:28:39,314 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:28:39,314 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 90 [2020-09-25 12:28:39,314 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 12:28:39,314 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 193 [2020-09-25 12:28:39,315 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:28:39,315 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:28:39,315 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 12:28:39,315 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 12:28:39,316 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 89 [2020-09-25 12:28:39,316 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:28:40,057 INFO L134 CoverageAnalysis]: Checked inductivity of 171 backedges. 102 proven. 68 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-09-25 12:28:40,058 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1449554942] [2020-09-25 12:28:40,058 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 12:28:40,058 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-09-25 12:28:40,058 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [864434065] [2020-09-25 12:28:40,061 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-09-25 12:28:40,062 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 12:28:40,064 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-09-25 12:28:40,071 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=122, Unknown=0, NotChecked=0, Total=156 [2020-09-25 12:28:40,071 INFO L87 Difference]: Start difference. First operand 1277 states and 1515 transitions. Second operand 13 states. [2020-09-25 12:28:41,059 WARN L193 SmtUtils]: Spent 116.00 ms on a formula simplification. DAG size of input: 49 DAG size of output: 43 [2020-09-25 12:28:42,687 WARN L193 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 45 DAG size of output: 40 [2020-09-25 12:28:46,499 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 12:28:46,500 INFO L93 Difference]: Finished difference Result 2888 states and 3474 transitions. [2020-09-25 12:28:46,501 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2020-09-25 12:28:46,501 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 239 [2020-09-25 12:28:46,502 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 12:28:46,515 INFO L225 Difference]: With dead ends: 2888 [2020-09-25 12:28:46,515 INFO L226 Difference]: Without dead ends: 1559 [2020-09-25 12:28:46,522 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 256 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=223, Invalid=833, Unknown=0, NotChecked=0, Total=1056 [2020-09-25 12:28:46,524 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1559 states. [2020-09-25 12:28:46,581 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1559 to 1462. [2020-09-25 12:28:46,581 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1462 states. [2020-09-25 12:28:46,587 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1462 states to 1462 states and 1726 transitions. [2020-09-25 12:28:46,594 INFO L78 Accepts]: Start accepts. Automaton has 1462 states and 1726 transitions. Word has length 239 [2020-09-25 12:28:46,595 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 12:28:46,595 INFO L479 AbstractCegarLoop]: Abstraction has 1462 states and 1726 transitions. [2020-09-25 12:28:46,595 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-09-25 12:28:46,595 INFO L276 IsEmpty]: Start isEmpty. Operand 1462 states and 1726 transitions. [2020-09-25 12:28:46,600 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 260 [2020-09-25 12:28:46,600 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 12:28:46,601 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 12:28:46,601 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-25 12:28:46,601 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 12:28:46,601 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 12:28:46,602 INFO L82 PathProgramCache]: Analyzing trace with hash -1974405537, now seen corresponding path program 1 times [2020-09-25 12:28:46,602 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 12:28:46,603 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1169838263] [2020-09-25 12:28:46,604 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 12:28:46,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:28:46,708 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:28:46,838 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:28:47,288 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:28:48,875 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:28:48,997 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:28:49,076 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:28:50,981 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:28:51,701 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:28:51,701 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 272 [2020-09-25 12:28:51,702 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-09-25 12:28:51,702 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5040 [2020-09-25 12:28:51,702 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:28:51,702 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:28:51,702 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 12:28:51,703 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-09-25 12:28:51,703 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 122 [2020-09-25 12:28:51,703 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:28:51,773 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 12:28:51,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:28:51,779 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:28:51,791 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:28:51,791 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 12:28:51,791 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:28:51,792 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-09-25 12:28:51,792 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:28:51,792 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:28:51,792 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 12:28:51,792 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:28:51,793 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 12:28:51,793 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 12:28:51,809 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 12:28:51,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:28:51,855 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:28:52,086 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:28:52,087 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 114 [2020-09-25 12:28:52,087 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:28:52,088 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 253 [2020-09-25 12:28:52,088 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:28:52,088 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:28:52,089 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 12:28:52,089 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 12:28:52,089 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 113 [2020-09-25 12:28:52,090 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:28:52,225 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2020-09-25 12:28:52,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:28:52,252 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:28:52,292 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:28:52,292 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 75 [2020-09-25 12:28:52,293 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:28:52,293 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 51 [2020-09-25 12:28:52,293 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:28:52,294 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:28:52,294 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 12:28:52,294 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 72 [2020-09-25 12:28:52,295 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 12:28:52,295 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:28:52,443 INFO L134 CoverageAnalysis]: Checked inductivity of 167 backedges. 92 proven. 64 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2020-09-25 12:28:52,444 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1169838263] [2020-09-25 12:28:52,444 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 12:28:52,445 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-09-25 12:28:52,445 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1315821623] [2020-09-25 12:28:52,446 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-25 12:28:52,447 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 12:28:52,447 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-25 12:28:52,448 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-09-25 12:28:52,448 INFO L87 Difference]: Start difference. First operand 1462 states and 1726 transitions. Second operand 7 states. [2020-09-25 12:28:56,159 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 12:28:56,159 INFO L93 Difference]: Finished difference Result 3604 states and 4357 transitions. [2020-09-25 12:28:56,161 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-09-25 12:28:56,161 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 259 [2020-09-25 12:28:56,162 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 12:28:56,174 INFO L225 Difference]: With dead ends: 3604 [2020-09-25 12:28:56,174 INFO L226 Difference]: Without dead ends: 2157 [2020-09-25 12:28:56,180 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 9 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-09-25 12:28:56,183 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2157 states. [2020-09-25 12:28:56,234 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2157 to 2043. [2020-09-25 12:28:56,234 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2043 states. [2020-09-25 12:28:56,244 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2043 states to 2043 states and 2408 transitions. [2020-09-25 12:28:56,244 INFO L78 Accepts]: Start accepts. Automaton has 2043 states and 2408 transitions. Word has length 259 [2020-09-25 12:28:56,246 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 12:28:56,246 INFO L479 AbstractCegarLoop]: Abstraction has 2043 states and 2408 transitions. [2020-09-25 12:28:56,246 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-25 12:28:56,246 INFO L276 IsEmpty]: Start isEmpty. Operand 2043 states and 2408 transitions. [2020-09-25 12:28:56,253 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 305 [2020-09-25 12:28:56,254 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 12:28:56,254 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 12:28:56,254 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-25 12:28:56,255 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 12:28:56,255 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 12:28:56,255 INFO L82 PathProgramCache]: Analyzing trace with hash 1445306711, now seen corresponding path program 1 times [2020-09-25 12:28:56,255 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 12:28:56,256 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [959589170] [2020-09-25 12:28:56,256 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 12:28:56,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:28:56,370 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:28:56,479 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:28:56,683 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:28:57,576 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:28:58,548 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:28:58,768 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:29:00,235 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:29:00,538 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:29:00,704 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:29:01,355 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:29:01,356 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 317 [2020-09-25 12:29:01,356 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-09-25 12:29:01,356 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5035 [2020-09-25 12:29:01,356 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:29:01,357 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:29:01,357 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-09-25 12:29:01,357 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-09-25 12:29:01,357 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 246 [2020-09-25 12:29:01,357 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:29:01,476 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 12:29:01,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:29:01,482 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:29:01,494 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:29:01,495 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 12:29:01,495 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:29:01,495 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-09-25 12:29:01,495 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:29:01,495 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:29:01,496 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 12:29:01,496 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:29:01,496 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-09-25 12:29:01,496 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 12:29:01,522 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 12:29:01,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:29:01,551 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:29:01,627 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:29:01,627 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 89 [2020-09-25 12:29:01,627 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:29:01,628 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 90 [2020-09-25 12:29:01,628 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:29:01,628 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:29:01,628 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 12:29:01,628 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 12:29:01,628 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 88 [2020-09-25 12:29:01,628 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 12:29:01,692 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2020-09-25 12:29:01,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:29:01,747 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:29:01,982 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:29:01,983 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 145 [2020-09-25 12:29:01,983 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:29:01,983 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 261 [2020-09-25 12:29:01,983 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:29:01,984 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:29:01,984 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 12:29:01,985 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 12:29:01,985 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 144 [2020-09-25 12:29:01,985 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:29:02,399 INFO L134 CoverageAnalysis]: Checked inductivity of 182 backedges. 179 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-09-25 12:29:02,399 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [959589170] [2020-09-25 12:29:02,399 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 12:29:02,400 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-09-25 12:29:02,400 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2017663424] [2020-09-25 12:29:02,401 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-09-25 12:29:02,401 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 12:29:02,401 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-09-25 12:29:02,402 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2020-09-25 12:29:02,402 INFO L87 Difference]: Start difference. First operand 2043 states and 2408 transitions. Second operand 10 states.