/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=0.2 --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_label14.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-25 11:15:50,911 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 11:15:50,916 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 11:15:50,965 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 11:15:50,966 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 11:15:50,977 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 11:15:50,979 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 11:15:50,984 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 11:15:50,987 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 11:15:50,990 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 11:15:50,991 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 11:15:50,993 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 11:15:50,993 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 11:15:50,996 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 11:15:51,000 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 11:15:51,002 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 11:15:51,004 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 11:15:51,005 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 11:15:51,007 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 11:15:51,017 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 11:15:51,018 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 11:15:51,020 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 11:15:51,021 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 11:15:51,022 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 11:15:51,025 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 11:15:51,025 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 11:15:51,025 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 11:15:51,029 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 11:15:51,029 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 11:15:51,030 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 11:15:51,031 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 11:15:51,032 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 11:15:51,032 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 11:15:51,033 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 11:15:51,034 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 11:15:51,035 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 11:15:51,035 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 11:15:51,036 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 11:15:51,036 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 11:15:51,037 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 11:15:51,039 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 11:15:51,040 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-09-25 11:15:51,094 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 11:15:51,094 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 11:15:51,097 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 11:15:51,097 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 11:15:51,097 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 11:15:51,098 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 11:15:51,098 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 11:15:51,098 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 11:15:51,099 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 11:15:51,099 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 11:15:51,100 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 11:15:51,100 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 11:15:51,100 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 11:15:51,101 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 11:15:51,101 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 11:15:51,101 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 11:15:51,101 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 11:15:51,102 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 11:15:51,102 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 11:15:51,102 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 11:15:51,102 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 11:15:51,102 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 11:15:51,103 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 11:15:51,103 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 11:15:51,103 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 11:15:51,103 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 11:15:51,103 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 11:15:51,104 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 11:15:51,104 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 11:15:51,104 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=0.2;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=0.2;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=0.2;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=0.2;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=0.2;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=0.2;log-additional-information=true; [2020-09-25 11:15:51,560 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 11:15:51,587 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 11:15:51,595 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 11:15:51,597 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 11:15:51,598 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 11:15:51,599 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem02_label14.c [2020-09-25 11:15:51,684 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/68e4bb87b/8e1e70bc3b8a459a828f9f2d325a140d/FLAG0e2707c0c [2020-09-25 11:15:52,337 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 11:15:52,338 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem02_label14.c [2020-09-25 11:15:52,361 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/68e4bb87b/8e1e70bc3b8a459a828f9f2d325a140d/FLAG0e2707c0c [2020-09-25 11:15:52,581 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/68e4bb87b/8e1e70bc3b8a459a828f9f2d325a140d [2020-09-25 11:15:52,596 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 11:15:52,603 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 11:15:52,604 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 11:15:52,604 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 11:15:52,611 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 11:15:52,613 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 11:15:52" (1/1) ... [2020-09-25 11:15:52,616 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4734e8fc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:15:52, skipping insertion in model container [2020-09-25 11:15:52,617 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 11:15:52" (1/1) ... [2020-09-25 11:15:52,626 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 11:15:52,702 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 11:15:53,188 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 11:15:53,195 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 11:15:53,435 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 11:15:53,456 INFO L208 MainTranslator]: Completed translation [2020-09-25 11:15:53,457 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:15:53 WrapperNode [2020-09-25 11:15:53,457 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 11:15:53,458 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 11:15:53,458 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 11:15:53,458 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 11:15:53,476 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:15:53" (1/1) ... [2020-09-25 11:15:53,477 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:15:53" (1/1) ... [2020-09-25 11:15:53,496 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:15:53" (1/1) ... [2020-09-25 11:15:53,496 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:15:53" (1/1) ... [2020-09-25 11:15:53,541 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:15:53" (1/1) ... [2020-09-25 11:15:53,560 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:15:53" (1/1) ... [2020-09-25 11:15:53,565 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:15:53" (1/1) ... [2020-09-25 11:15:53,572 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 11:15:53,573 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 11:15:53,573 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 11:15:53,573 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 11:15:53,578 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:15:53" (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 11:15:53,666 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 11:15:53,666 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 11:15:53,666 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-09-25 11:15:53,666 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 11:15:53,667 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-09-25 11:15:53,667 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 11:15:53,667 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-25 11:15:53,667 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-09-25 11:15:53,667 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 11:15:53,667 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 11:15:53,668 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 11:15:54,967 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 11:15:54,967 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-09-25 11:15:54,976 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 11:15:54 BoogieIcfgContainer [2020-09-25 11:15:54,977 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 11:15:54,978 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 11:15:54,978 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 11:15:54,982 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 11:15:54,982 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 11:15:52" (1/3) ... [2020-09-25 11:15:54,983 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@526e8696 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 11:15:54, skipping insertion in model container [2020-09-25 11:15:54,984 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:15:53" (2/3) ... [2020-09-25 11:15:54,984 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@526e8696 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 11:15:54, skipping insertion in model container [2020-09-25 11:15:54,984 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 11:15:54" (3/3) ... [2020-09-25 11:15:54,987 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem02_label14.c [2020-09-25 11:15:54,999 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 11:15:55,010 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-25 11:15:55,033 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-25 11:15:55,067 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 11:15:55,067 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 11:15:55,067 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 11:15:55,067 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 11:15:55,067 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 11:15:55,068 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 11:15:55,068 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 11:15:55,068 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 11:15:55,102 INFO L276 IsEmpty]: Start isEmpty. Operand 527 states. [2020-09-25 11:15:55,124 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2020-09-25 11:15:55,124 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 11:15:55,127 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] [2020-09-25 11:15:55,127 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 11:15:55,134 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 11:15:55,135 INFO L82 PathProgramCache]: Analyzing trace with hash 569136050, now seen corresponding path program 1 times [2020-09-25 11:15:55,145 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 11:15:55,145 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1436210047] [2020-09-25 11:15:55,145 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 11:15:55,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:15:55,548 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:15:55,873 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:15:56,218 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:15:57,268 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:15:57,861 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:15:58,966 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:15:59,829 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:16:00,492 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:16:00,492 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 152 [2020-09-25 11:16:00,493 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-09-25 11:16:00,493 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5022 [2020-09-25 11:16:00,497 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:16:00,498 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:16:00,498 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 11:16:00,498 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 22 [2020-09-25 11:16:00,498 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 129 [2020-09-25 11:16:00,499 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 5 [2020-09-25 11:16:00,728 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 11:16:00,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:16:00,752 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:16:00,778 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:16:00,778 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 11:16:00,778 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:16:00,779 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 38 [2020-09-25 11:16:00,779 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:16:00,780 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:16:00,780 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 11:16:00,780 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:16:00,781 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-09-25 11:16:00,781 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 11:16:00,838 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 11:16:00,839 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1436210047] [2020-09-25 11:16:00,841 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 11:16:00,842 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-25 11:16:00,843 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1436821309] [2020-09-25 11:16:00,851 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-25 11:16:00,851 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 11:16:00,869 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-25 11:16:00,870 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-25 11:16:00,873 INFO L87 Difference]: Start difference. First operand 527 states. Second operand 4 states. [2020-09-25 11:16:03,333 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 11:16:03,333 INFO L93 Difference]: Finished difference Result 1205 states and 1651 transitions. [2020-09-25 11:16:03,337 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-25 11:16:03,339 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 143 [2020-09-25 11:16:03,340 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 11:16:03,381 INFO L225 Difference]: With dead ends: 1205 [2020-09-25 11:16:03,381 INFO L226 Difference]: Without dead ends: 627 [2020-09-25 11:16:03,394 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 11:16:03,422 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 627 states. [2020-09-25 11:16:03,502 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 627 to 613. [2020-09-25 11:16:03,504 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 613 states. [2020-09-25 11:16:03,508 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 613 states to 613 states and 759 transitions. [2020-09-25 11:16:03,511 INFO L78 Accepts]: Start accepts. Automaton has 613 states and 759 transitions. Word has length 143 [2020-09-25 11:16:03,512 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 11:16:03,512 INFO L479 AbstractCegarLoop]: Abstraction has 613 states and 759 transitions. [2020-09-25 11:16:03,512 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-25 11:16:03,516 INFO L276 IsEmpty]: Start isEmpty. Operand 613 states and 759 transitions. [2020-09-25 11:16:03,534 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2020-09-25 11:16:03,534 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 11:16:03,534 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] [2020-09-25 11:16:03,538 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 11:16:03,538 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 11:16:03,538 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 11:16:03,539 INFO L82 PathProgramCache]: Analyzing trace with hash 1046453143, now seen corresponding path program 1 times [2020-09-25 11:16:03,539 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 11:16:03,539 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [931715565] [2020-09-25 11:16:03,539 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 11:16:03,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:16:03,602 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:16:03,653 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:16:03,993 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:16:04,294 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:16:08,603 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:16:08,604 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 188 [2020-09-25 11:16:08,604 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-25 11:16:08,604 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5021 [2020-09-25 11:16:08,604 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:16:08,605 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:16:08,605 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-09-25 11:16:08,605 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-09-25 11:16:08,605 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 136 [2020-09-25 11:16:08,606 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:16:08,900 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 11:16:08,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:16:08,910 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:16:08,931 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:16:08,931 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 11:16:08,931 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:16:08,931 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 24 [2020-09-25 11:16:08,932 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:16:08,932 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:16:08,932 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 11:16:08,932 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:16:08,933 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-09-25 11:16:08,933 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:16:08,956 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-25 11:16:08,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:16:08,971 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:16:09,069 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:16:09,108 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:16:09,109 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-09-25 11:16:09,109 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 11:16:09,109 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 143 [2020-09-25 11:16:09,109 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:16:09,110 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:16:09,110 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-25 11:16:09,110 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:16:09,110 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-09-25 11:16:09,111 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:16:09,342 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 11:16:09,343 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [931715565] [2020-09-25 11:16:09,343 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 11:16:09,343 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-09-25 11:16:09,343 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1087221671] [2020-09-25 11:16:09,346 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-09-25 11:16:09,346 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 11:16:09,346 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-09-25 11:16:09,347 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2020-09-25 11:16:09,347 INFO L87 Difference]: Start difference. First operand 613 states and 759 transitions. Second operand 10 states. [2020-09-25 11:16:10,289 WARN L193 SmtUtils]: Spent 109.00 ms on a formula simplification that was a NOOP. DAG size: 64 [2020-09-25 11:16:12,888 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 11:16:12,888 INFO L93 Difference]: Finished difference Result 1381 states and 1829 transitions. [2020-09-25 11:16:12,889 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-09-25 11:16:12,889 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 177 [2020-09-25 11:16:12,890 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 11:16:12,895 INFO L225 Difference]: With dead ends: 1381 [2020-09-25 11:16:12,895 INFO L226 Difference]: Without dead ends: 689 [2020-09-25 11:16:12,900 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 9 SyntacticMatches, 2 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=79, Invalid=131, Unknown=0, NotChecked=0, Total=210 [2020-09-25 11:16:12,901 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 689 states. [2020-09-25 11:16:12,928 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 689 to 521. [2020-09-25 11:16:12,928 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 521 states. [2020-09-25 11:16:12,932 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 521 states to 521 states and 585 transitions. [2020-09-25 11:16:12,933 INFO L78 Accepts]: Start accepts. Automaton has 521 states and 585 transitions. Word has length 177 [2020-09-25 11:16:12,933 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 11:16:12,933 INFO L479 AbstractCegarLoop]: Abstraction has 521 states and 585 transitions. [2020-09-25 11:16:12,934 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-09-25 11:16:12,934 INFO L276 IsEmpty]: Start isEmpty. Operand 521 states and 585 transitions. [2020-09-25 11:16:12,937 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 182 [2020-09-25 11:16:12,938 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 11:16:12,938 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] [2020-09-25 11:16:12,939 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-25 11:16:12,939 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 11:16:12,939 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 11:16:12,939 INFO L82 PathProgramCache]: Analyzing trace with hash 139340650, now seen corresponding path program 1 times [2020-09-25 11:16:12,940 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 11:16:12,940 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1909176282] [2020-09-25 11:16:12,961 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 11:16:13,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:16:13,042 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:16:13,119 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:16:13,409 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:16:13,482 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:16:14,570 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:16:14,728 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:16:15,674 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:16:16,037 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:16:18,011 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:16:18,011 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 192 [2020-09-25 11:16:18,011 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-09-25 11:16:18,011 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5007 [2020-09-25 11:16:18,012 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:16:18,014 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:16:18,014 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 11:16:18,014 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 59 [2020-09-25 11:16:18,014 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 132 [2020-09-25 11:16:18,014 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 11:16:18,139 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 11:16:18,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:16:18,146 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:16:18,158 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:16:18,159 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 11:16:18,159 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:16:18,159 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-09-25 11:16:18,160 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:16:18,160 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:16:18,160 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 11:16:18,161 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:16:18,161 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 11:16:18,161 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:16:18,188 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-25 11:16:18,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:16:18,209 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:16:18,244 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:16:18,245 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-09-25 11:16:18,245 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:16:18,246 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 42 [2020-09-25 11:16:18,246 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:16:18,246 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:16:18,247 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 11:16:18,247 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:16:18,247 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-09-25 11:16:18,248 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:16:18,333 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 11:16:18,334 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1909176282] [2020-09-25 11:16:18,335 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 11:16:18,335 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-09-25 11:16:18,336 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1997836641] [2020-09-25 11:16:18,337 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 11:16:18,338 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 11:16:18,338 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 11:16:18,339 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-25 11:16:18,339 INFO L87 Difference]: Start difference. First operand 521 states and 585 transitions. Second operand 5 states. [2020-09-25 11:16:20,365 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 11:16:20,365 INFO L93 Difference]: Finished difference Result 1414 states and 1625 transitions. [2020-09-25 11:16:20,366 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 11:16:20,366 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 181 [2020-09-25 11:16:20,367 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 11:16:20,372 INFO L225 Difference]: With dead ends: 1414 [2020-09-25 11:16:20,372 INFO L226 Difference]: Without dead ends: 718 [2020-09-25 11:16:20,375 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 11:16:20,376 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 718 states. [2020-09-25 11:16:20,400 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 718 to 644. [2020-09-25 11:16:20,400 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 644 states. [2020-09-25 11:16:20,404 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 644 states to 644 states and 740 transitions. [2020-09-25 11:16:20,404 INFO L78 Accepts]: Start accepts. Automaton has 644 states and 740 transitions. Word has length 181 [2020-09-25 11:16:20,404 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 11:16:20,405 INFO L479 AbstractCegarLoop]: Abstraction has 644 states and 740 transitions. [2020-09-25 11:16:20,405 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 11:16:20,405 INFO L276 IsEmpty]: Start isEmpty. Operand 644 states and 740 transitions. [2020-09-25 11:16:20,409 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 225 [2020-09-25 11:16:20,409 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 11:16:20,410 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, 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] [2020-09-25 11:16:20,410 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-25 11:16:20,410 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 11:16:20,410 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 11:16:20,411 INFO L82 PathProgramCache]: Analyzing trace with hash -127875039, now seen corresponding path program 1 times [2020-09-25 11:16:20,411 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 11:16:20,411 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [979168059] [2020-09-25 11:16:20,411 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 11:16:20,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:16:20,504 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:16:20,592 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:16:20,722 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:16:21,070 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:16:21,539 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:16:23,832 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:16:24,301 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:16:25,459 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:16:25,543 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:16:25,543 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 235 [2020-09-25 11:16:25,543 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-09-25 11:16:25,543 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5081 [2020-09-25 11:16:25,544 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:16:25,544 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:16:25,544 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 18 [2020-09-25 11:16:25,544 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 17 [2020-09-25 11:16:25,544 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 217 [2020-09-25 11:16:25,545 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:16:25,757 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 11:16:25,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:16:25,767 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:16:25,822 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:16:25,822 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 11:16:25,822 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:16:25,823 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 60 [2020-09-25 11:16:25,823 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:16:25,823 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:16:25,823 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 11:16:25,823 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:16:25,824 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-09-25 11:16:25,824 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:16:25,949 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-25 11:16:25,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:16:25,989 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:16:26,158 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:16:26,541 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:16:26,541 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 77 [2020-09-25 11:16:26,542 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 11:16:26,542 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 568 [2020-09-25 11:16:26,543 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:16:26,543 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:16:26,544 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 11:16:26,544 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 11:16:26,544 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 76 [2020-09-25 11:16:26,544 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 11:16:26,749 INFO L134 CoverageAnalysis]: Checked inductivity of 69 backedges. 0 proven. 69 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 11:16:26,750 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [979168059] [2020-09-25 11:16:26,750 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 11:16:26,750 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2020-09-25 11:16:26,751 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1664188851] [2020-09-25 11:16:26,752 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-09-25 11:16:26,753 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 11:16:26,753 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-09-25 11:16:26,754 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=136, Unknown=0, NotChecked=0, Total=182 [2020-09-25 11:16:26,754 INFO L87 Difference]: Start difference. First operand 644 states and 740 transitions. Second operand 14 states. [2020-09-25 11:16:27,126 WARN L193 SmtUtils]: Spent 135.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 72 [2020-09-25 11:16:32,610 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 11:16:32,610 INFO L93 Difference]: Finished difference Result 1994 states and 2493 transitions. [2020-09-25 11:16:32,612 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2020-09-25 11:16:32,613 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 224 [2020-09-25 11:16:32,613 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 11:16:32,628 INFO L225 Difference]: With dead ends: 1994 [2020-09-25 11:16:32,628 INFO L226 Difference]: Without dead ends: 1372 [2020-09-25 11:16:32,633 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 254 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=271, Invalid=851, Unknown=0, NotChecked=0, Total=1122 [2020-09-25 11:16:32,636 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1372 states. [2020-09-25 11:16:32,709 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1372 to 1158. [2020-09-25 11:16:32,710 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1158 states. [2020-09-25 11:16:32,715 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1158 states to 1158 states and 1306 transitions. [2020-09-25 11:16:32,715 INFO L78 Accepts]: Start accepts. Automaton has 1158 states and 1306 transitions. Word has length 224 [2020-09-25 11:16:32,715 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 11:16:32,716 INFO L479 AbstractCegarLoop]: Abstraction has 1158 states and 1306 transitions. [2020-09-25 11:16:32,716 INFO L480 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-09-25 11:16:32,716 INFO L276 IsEmpty]: Start isEmpty. Operand 1158 states and 1306 transitions. [2020-09-25 11:16:32,722 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 242 [2020-09-25 11:16:32,722 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 11:16:32,722 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 11:16:32,723 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-25 11:16:32,723 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 11:16:32,723 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 11:16:32,723 INFO L82 PathProgramCache]: Analyzing trace with hash -1633762342, now seen corresponding path program 1 times [2020-09-25 11:16:32,724 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 11:16:32,724 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1787008983] [2020-09-25 11:16:32,724 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 11:16:32,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:16:32,824 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:16:32,901 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:16:33,122 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:16:34,622 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:16:36,182 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:16:36,315 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:16:37,822 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:16:37,906 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:16:37,907 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 254 [2020-09-25 11:16:37,907 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-09-25 11:16:37,907 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5112 [2020-09-25 11:16:37,907 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:16:37,908 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:16:37,908 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 19 [2020-09-25 11:16:37,908 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 18 [2020-09-25 11:16:37,908 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 235 [2020-09-25 11:16:37,908 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 11:16:38,139 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 11:16:38,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:16:38,149 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:16:38,180 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:16:38,180 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 11:16:38,180 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:16:38,180 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 35 [2020-09-25 11:16:38,181 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:16:38,181 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:16:38,181 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 11:16:38,181 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:16:38,182 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-09-25 11:16:38,182 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:16:38,235 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-25 11:16:38,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:16:38,243 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:16:38,280 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:16:38,280 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-09-25 11:16:38,280 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:16:38,280 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 39 [2020-09-25 11:16:38,280 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:16:38,281 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:16:38,281 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 11:16:38,281 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 11:16:38,281 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-09-25 11:16:38,282 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:16:38,357 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2020-09-25 11:16:38,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:16:38,383 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:16:38,498 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:16:38,810 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:16:38,811 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 77 [2020-09-25 11:16:38,811 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 11:16:38,811 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 438 [2020-09-25 11:16:38,812 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:16:38,812 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:16:38,812 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 11:16:38,812 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 11:16:38,812 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 76 [2020-09-25 11:16:38,813 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:16:39,034 INFO L134 CoverageAnalysis]: Checked inductivity of 94 backedges. 7 proven. 86 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-09-25 11:16:39,034 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1787008983] [2020-09-25 11:16:39,035 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 11:16:39,035 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2020-09-25 11:16:39,035 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1778717782] [2020-09-25 11:16:39,036 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-09-25 11:16:39,036 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 11:16:39,036 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-09-25 11:16:39,037 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=130, Unknown=0, NotChecked=0, Total=182 [2020-09-25 11:16:39,037 INFO L87 Difference]: Start difference. First operand 1158 states and 1306 transitions. Second operand 14 states. [2020-09-25 11:16:40,036 WARN L193 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 55 [2020-09-25 11:16:40,416 WARN L193 SmtUtils]: Spent 124.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 58 [2020-09-25 11:16:41,675 WARN L193 SmtUtils]: Spent 141.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 60