/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/Problem10_label36.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-25 12:26:58,276 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 12:26:58,280 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 12:26:58,307 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 12:26:58,307 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 12:26:58,309 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 12:26:58,310 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 12:26:58,312 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 12:26:58,314 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 12:26:58,315 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 12:26:58,317 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 12:26:58,318 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 12:26:58,318 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 12:26:58,320 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 12:26:58,321 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 12:26:58,322 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 12:26:58,323 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 12:26:58,324 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 12:26:58,326 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 12:26:58,329 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 12:26:58,330 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 12:26:58,332 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 12:26:58,333 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 12:26:58,334 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 12:26:58,342 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 12:26:58,342 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 12:26:58,343 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 12:26:58,344 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 12:26:58,344 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 12:26:58,345 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 12:26:58,346 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 12:26:58,348 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 12:26:58,349 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 12:26:58,350 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 12:26:58,353 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 12:26:58,353 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 12:26:58,355 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 12:26:58,355 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 12:26:58,355 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 12:26:58,357 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 12:26:58,359 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 12:26:58,360 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 12:26:58,420 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 12:26:58,421 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 12:26:58,423 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 12:26:58,424 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 12:26:58,424 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 12:26:58,424 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 12:26:58,424 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 12:26:58,425 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 12:26:58,425 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 12:26:58,425 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 12:26:58,425 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 12:26:58,425 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 12:26:58,426 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 12:26:58,427 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 12:26:58,427 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 12:26:58,427 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 12:26:58,428 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 12:26:58,428 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 12:26:58,428 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 12:26:58,429 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 12:26:58,429 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 12:26:58,429 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 12:26:58,429 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 12:26:58,429 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 12:26:58,430 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 12:26:58,430 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 12:26:58,430 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 12:26:58,430 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 12:26:58,430 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 12:26:58,431 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 12:26:58,926 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 12:26:58,953 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 12:26:58,958 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 12:26:58,960 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 12:26:58,960 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 12:26:58,961 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem10_label36.c [2020-09-25 12:26:59,052 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/c970a87b0/649d75d545654e2c879a8c8cf5b4ebd7/FLAG947f4f25e [2020-09-25 12:26:59,685 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 12:26:59,686 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem10_label36.c [2020-09-25 12:26:59,700 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/c970a87b0/649d75d545654e2c879a8c8cf5b4ebd7/FLAG947f4f25e [2020-09-25 12:26:59,931 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/c970a87b0/649d75d545654e2c879a8c8cf5b4ebd7 [2020-09-25 12:26:59,946 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 12:26:59,953 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 12:26:59,956 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 12:26:59,956 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 12:26:59,960 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 12:26:59,962 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 12:26:59" (1/1) ... [2020-09-25 12:26:59,967 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@347c51ca and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:26:59, skipping insertion in model container [2020-09-25 12:26:59,967 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 12:26:59" (1/1) ... [2020-09-25 12:26:59,979 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 12:27:00,052 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 12:27:00,590 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 12:27:00,596 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 12:27:00,740 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 12:27:00,777 INFO L208 MainTranslator]: Completed translation [2020-09-25 12:27:00,778 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:27:00 WrapperNode [2020-09-25 12:27:00,778 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 12:27:00,779 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 12:27:00,780 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 12:27:00,780 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 12:27:00,794 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:27:00" (1/1) ... [2020-09-25 12:27:00,794 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:27:00" (1/1) ... [2020-09-25 12:27:00,819 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:27:00" (1/1) ... [2020-09-25 12:27:00,820 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:27:00" (1/1) ... [2020-09-25 12:27:00,871 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:27:00" (1/1) ... [2020-09-25 12:27:00,893 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:27:00" (1/1) ... [2020-09-25 12:27:00,908 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:27:00" (1/1) ... [2020-09-25 12:27:00,918 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 12:27:00,919 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 12:27:00,919 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 12:27:00,919 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 12:27:00,920 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:27:00" (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 12:27:01,023 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 12:27:01,024 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 12:27:01,024 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-09-25 12:27:01,024 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 12:27:01,024 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-09-25 12:27:01,025 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 12:27:01,025 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-25 12:27:01,026 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-09-25 12:27:01,027 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 12:27:01,027 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 12:27:01,027 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 12:27:02,561 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 12:27:02,562 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-09-25 12:27:02,580 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 12:27:02 BoogieIcfgContainer [2020-09-25 12:27:02,580 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 12:27:02,583 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 12:27:02,583 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 12:27:02,587 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 12:27:02,587 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 12:26:59" (1/3) ... [2020-09-25 12:27:02,589 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@b01f935 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 12:27:02, skipping insertion in model container [2020-09-25 12:27:02,589 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:27:00" (2/3) ... [2020-09-25 12:27:02,590 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@b01f935 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 12:27:02, skipping insertion in model container [2020-09-25 12:27:02,590 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 12:27:02" (3/3) ... [2020-09-25 12:27:02,596 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem10_label36.c [2020-09-25 12:27:02,608 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 12:27:02,622 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-25 12:27:02,641 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-25 12:27:02,674 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 12:27:02,674 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 12:27:02,675 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 12:27:02,675 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 12:27:02,675 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 12:27:02,675 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 12:27:02,675 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 12:27:02,675 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 12:27:02,705 INFO L276 IsEmpty]: Start isEmpty. Operand 456 states. [2020-09-25 12:27:02,715 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2020-09-25 12:27:02,715 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 12:27:02,717 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] [2020-09-25 12:27:02,717 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 12:27:02,725 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 12:27:02,726 INFO L82 PathProgramCache]: Analyzing trace with hash -2108492313, now seen corresponding path program 1 times [2020-09-25 12:27:02,737 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 12:27:02,738 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [214183840] [2020-09-25 12:27:02,738 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 12:27:02,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:27:03,022 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:27:03,305 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:27:03,795 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:27:03,795 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 67 [2020-09-25 12:27:03,796 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 12:27:03,796 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 872 [2020-09-25 12:27:03,800 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:27:03,800 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:27:03,800 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 12:27:03,801 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-09-25 12:27:03,801 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 53 [2020-09-25 12:27:03,801 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 5 [2020-09-25 12:27:03,927 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 12:27:03,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:27:03,936 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:27:03,962 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:27:03,962 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 12:27:03,963 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:27:03,963 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 29 [2020-09-25 12:27:03,963 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:27:03,964 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:27:03,964 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 12:27:03,964 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:27:03,964 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-25 12:27:03,965 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:27:03,991 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 12:27:03,992 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [214183840] [2020-09-25 12:27:03,995 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 12:27:03,995 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-25 12:27:03,997 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [739532194] [2020-09-25 12:27:04,005 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-25 12:27:04,006 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 12:27:04,024 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-25 12:27:04,025 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-25 12:27:04,028 INFO L87 Difference]: Start difference. First operand 456 states. Second operand 4 states. [2020-09-25 12:27:06,097 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 12:27:06,098 INFO L93 Difference]: Finished difference Result 1089 states and 1514 transitions. [2020-09-25 12:27:06,098 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-25 12:27:06,100 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 58 [2020-09-25 12:27:06,101 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 12:27:06,121 INFO L225 Difference]: With dead ends: 1089 [2020-09-25 12:27:06,122 INFO L226 Difference]: Without dead ends: 575 [2020-09-25 12:27:06,134 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 12:27:06,157 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 575 states. [2020-09-25 12:27:06,232 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 575 to 545. [2020-09-25 12:27:06,234 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 545 states. [2020-09-25 12:27:06,237 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 545 states to 545 states and 642 transitions. [2020-09-25 12:27:06,240 INFO L78 Accepts]: Start accepts. Automaton has 545 states and 642 transitions. Word has length 58 [2020-09-25 12:27:06,240 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 12:27:06,241 INFO L479 AbstractCegarLoop]: Abstraction has 545 states and 642 transitions. [2020-09-25 12:27:06,241 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-25 12:27:06,241 INFO L276 IsEmpty]: Start isEmpty. Operand 545 states and 642 transitions. [2020-09-25 12:27:06,248 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 138 [2020-09-25 12:27:06,248 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 12:27:06,249 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 12:27:06,249 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 12:27:06,250 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 12:27:06,250 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 12:27:06,250 INFO L82 PathProgramCache]: Analyzing trace with hash 1346618775, now seen corresponding path program 1 times [2020-09-25 12:27:06,251 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 12:27:06,251 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1231919469] [2020-09-25 12:27:06,251 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 12:27:06,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:27:06,341 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:27:06,486 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:27:06,561 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:27:06,821 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:27:06,917 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:27:06,981 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:27:07,465 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:27:10,645 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:27:10,646 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 148 [2020-09-25 12:27:10,646 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-09-25 12:27:10,646 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4340 [2020-09-25 12:27:10,647 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:27:10,647 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:27:10,647 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-25 12:27:10,647 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-09-25 12:27:10,648 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 135 [2020-09-25 12:27:10,648 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:27:10,746 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 12:27:10,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:27:10,753 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:27:10,767 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:27:10,767 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 12:27:10,768 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:27:10,768 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-09-25 12:27:10,768 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:27:10,769 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:27:10,769 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 12:27:10,769 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:27:10,769 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 12:27:10,769 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:27:10,784 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 12:27:10,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:27:10,815 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:27:10,893 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:27:10,964 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:27:10,964 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 75 [2020-09-25 12:27:10,965 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 12:27:10,965 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 161 [2020-09-25 12:27:10,965 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:27:10,965 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:27:10,966 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 12:27:10,966 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:27:10,966 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 65 [2020-09-25 12:27:10,966 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:27:11,033 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 34 proven. 1 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2020-09-25 12:27:11,034 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1231919469] [2020-09-25 12:27:11,034 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 12:27:11,036 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-09-25 12:27:11,036 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2145224631] [2020-09-25 12:27:11,038 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 12:27:11,039 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 12:27:11,039 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 12:27:11,039 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-25 12:27:11,039 INFO L87 Difference]: Start difference. First operand 545 states and 642 transitions. Second operand 5 states. [2020-09-25 12:27:12,838 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 12:27:12,839 INFO L93 Difference]: Finished difference Result 1389 states and 1702 transitions. [2020-09-25 12:27:12,839 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 12:27:12,840 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 137 [2020-09-25 12:27:12,841 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 12:27:12,846 INFO L225 Difference]: With dead ends: 1389 [2020-09-25 12:27:12,847 INFO L226 Difference]: Without dead ends: 859 [2020-09-25 12:27:12,849 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-09-25 12:27:12,852 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 859 states. [2020-09-25 12:27:12,899 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 859 to 849. [2020-09-25 12:27:12,900 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 849 states. [2020-09-25 12:27:12,910 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 849 states to 849 states and 1017 transitions. [2020-09-25 12:27:12,910 INFO L78 Accepts]: Start accepts. Automaton has 849 states and 1017 transitions. Word has length 137 [2020-09-25 12:27:12,911 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 12:27:12,911 INFO L479 AbstractCegarLoop]: Abstraction has 849 states and 1017 transitions. [2020-09-25 12:27:12,911 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 12:27:12,912 INFO L276 IsEmpty]: Start isEmpty. Operand 849 states and 1017 transitions. [2020-09-25 12:27:12,919 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 148 [2020-09-25 12:27:12,919 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 12:27:12,920 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 12:27:12,920 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-25 12:27:12,920 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 12:27:12,920 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 12:27:12,921 INFO L82 PathProgramCache]: Analyzing trace with hash -921428875, now seen corresponding path program 1 times [2020-09-25 12:27:12,921 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 12:27:12,921 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1978351010] [2020-09-25 12:27:12,921 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 12:27:12,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:27:12,993 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:27:13,113 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:27:13,209 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:27:13,593 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:27:14,835 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:27:15,037 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:27:15,123 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:27:16,082 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:27:17,969 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:27:17,969 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 158 [2020-09-25 12:27:17,969 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-09-25 12:27:17,969 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5010 [2020-09-25 12:27:17,970 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:27:17,970 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:27:17,971 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-09-25 12:27:17,971 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-25 12:27:17,971 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 146 [2020-09-25 12:27:17,971 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:27:18,108 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 12:27:18,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:27:18,115 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:27:18,144 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:27:18,146 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 12:27:18,146 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:27:18,146 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 33 [2020-09-25 12:27:18,146 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:27:18,147 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:27:18,147 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 12:27:18,147 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:27:18,147 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 12:27:18,148 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:27:18,180 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 12:27:18,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:27:18,212 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:27:18,312 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:27:18,312 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 85 [2020-09-25 12:27:18,313 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:27:18,313 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 114 [2020-09-25 12:27:18,313 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:27:18,313 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:27:18,313 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 12:27:18,314 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 12:27:18,314 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 84 [2020-09-25 12:27:18,314 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:27:18,407 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 12:27:18,407 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1978351010] [2020-09-25 12:27:18,407 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 12:27:18,408 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-09-25 12:27:18,408 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [668120276] [2020-09-25 12:27:18,409 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-25 12:27:18,409 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 12:27:18,409 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-25 12:27:18,409 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2020-09-25 12:27:18,410 INFO L87 Difference]: Start difference. First operand 849 states and 1017 transitions. Second operand 8 states. [2020-09-25 12:27:21,687 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 12:27:21,688 INFO L93 Difference]: Finished difference Result 2420 states and 2994 transitions. [2020-09-25 12:27:21,688 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-09-25 12:27:21,688 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 147 [2020-09-25 12:27:21,690 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 12:27:21,706 INFO L225 Difference]: With dead ends: 2420 [2020-09-25 12:27:21,707 INFO L226 Difference]: Without dead ends: 1586 [2020-09-25 12:27:21,711 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 4 SyntacticMatches, 1 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=44, Invalid=112, Unknown=0, NotChecked=0, Total=156 [2020-09-25 12:27:21,713 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1586 states. [2020-09-25 12:27:21,789 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1586 to 1497. [2020-09-25 12:27:21,792 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1497 states. [2020-09-25 12:27:21,801 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1497 states to 1497 states and 1758 transitions. [2020-09-25 12:27:21,801 INFO L78 Accepts]: Start accepts. Automaton has 1497 states and 1758 transitions. Word has length 147 [2020-09-25 12:27:21,803 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 12:27:21,803 INFO L479 AbstractCegarLoop]: Abstraction has 1497 states and 1758 transitions. [2020-09-25 12:27:21,804 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-09-25 12:27:21,804 INFO L276 IsEmpty]: Start isEmpty. Operand 1497 states and 1758 transitions. [2020-09-25 12:27:21,816 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 218 [2020-09-25 12:27:21,816 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 12:27:21,816 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, 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] [2020-09-25 12:27:21,817 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-25 12:27:21,817 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 12:27:21,817 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 12:27:21,817 INFO L82 PathProgramCache]: Analyzing trace with hash -352912224, now seen corresponding path program 1 times [2020-09-25 12:27:21,817 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 12:27:21,819 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [97207980] [2020-09-25 12:27:21,819 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 12:27:21,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:27:21,906 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:27:22,071 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:27:22,201 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:27:23,020 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:27:23,154 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:27:23,211 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:27:23,311 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:27:25,198 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:27:26,880 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:27:26,881 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 230 [2020-09-25 12:27:26,881 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-09-25 12:27:26,881 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5015 [2020-09-25 12:27:26,881 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:27:26,882 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:27:26,882 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-09-25 12:27:26,882 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-25 12:27:26,882 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 167 [2020-09-25 12:27:26,882 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:27:26,962 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 12:27:26,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:27:26,968 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:27:26,981 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:27:26,981 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 12:27:26,981 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:27:26,981 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-09-25 12:27:26,982 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:27:26,982 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:27:26,982 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 12:27:26,982 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:27:26,983 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 12:27:26,983 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:27:27,001 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 12:27:27,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:27:27,026 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:27:27,073 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:27:27,112 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:27:27,112 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 75 [2020-09-25 12:27:27,113 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 12:27:27,113 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 98 [2020-09-25 12:27:27,113 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:27:27,113 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:27:27,113 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 12:27:27,113 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:27:27,113 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 66 [2020-09-25 12:27:27,114 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 12:27:27,152 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2020-09-25 12:27:27,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:27:27,175 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:27:27,252 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:27:27,253 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-09-25 12:27:27,253 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:27:27,253 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 87 [2020-09-25 12:27:27,253 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:27:27,254 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:27:27,254 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 12:27:27,254 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 12:27:27,254 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 75 [2020-09-25 12:27:27,254 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:27:27,402 INFO L134 CoverageAnalysis]: Checked inductivity of 160 backedges. 150 proven. 9 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-09-25 12:27:27,403 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [97207980] [2020-09-25 12:27:27,403 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 12:27:27,403 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-09-25 12:27:27,404 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [884619348] [2020-09-25 12:27:27,404 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-09-25 12:27:27,405 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 12:27:27,405 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-09-25 12:27:27,405 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2020-09-25 12:27:27,406 INFO L87 Difference]: Start difference. First operand 1497 states and 1758 transitions. Second operand 9 states. [2020-09-25 12:27:31,368 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 12:27:31,369 INFO L93 Difference]: Finished difference Result 3566 states and 4479 transitions. [2020-09-25 12:27:31,371 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-09-25 12:27:31,372 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 217 [2020-09-25 12:27:31,372 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 12:27:31,388 INFO L225 Difference]: With dead ends: 3566 [2020-09-25 12:27:31,388 INFO L226 Difference]: Without dead ends: 2722 [2020-09-25 12:27:31,392 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 9 SyntacticMatches, 1 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 33 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=85, Invalid=221, Unknown=0, NotChecked=0, Total=306 [2020-09-25 12:27:31,396 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2722 states. [2020-09-25 12:27:31,474 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2722 to 2319. [2020-09-25 12:27:31,474 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2319 states. [2020-09-25 12:27:31,484 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2319 states to 2319 states and 2924 transitions. [2020-09-25 12:27:31,484 INFO L78 Accepts]: Start accepts. Automaton has 2319 states and 2924 transitions. Word has length 217 [2020-09-25 12:27:31,484 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 12:27:31,485 INFO L479 AbstractCegarLoop]: Abstraction has 2319 states and 2924 transitions. [2020-09-25 12:27:31,485 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-09-25 12:27:31,485 INFO L276 IsEmpty]: Start isEmpty. Operand 2319 states and 2924 transitions. [2020-09-25 12:27:31,490 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 227 [2020-09-25 12:27:31,490 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 12:27:31,490 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, 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] [2020-09-25 12:27:31,490 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-25 12:27:31,491 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 12:27:31,491 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 12:27:31,491 INFO L82 PathProgramCache]: Analyzing trace with hash 1072222917, now seen corresponding path program 1 times [2020-09-25 12:27:31,491 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 12:27:31,492 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1724829168] [2020-09-25 12:27:31,492 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 12:27:31,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:27:31,570 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:27:31,762 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:27:31,877 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:27:32,559 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:27:32,641 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:27:32,688 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:27:34,214 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:27:36,540 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:27:36,541 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 239 [2020-09-25 12:27:36,541 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-09-25 12:27:36,541 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5007 [2020-09-25 12:27:36,541 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:27:36,542 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:27:36,542 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-09-25 12:27:36,542 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-25 12:27:36,542 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 174 [2020-09-25 12:27:36,542 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:27:36,607 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 12:27:36,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:27:36,617 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:27:36,632 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:27:36,632 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 12:27:36,632 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:27:36,632 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-09-25 12:27:36,633 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:27:36,633 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:27:36,633 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 12:27:36,633 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:27:36,633 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 12:27:36,634 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:27:36,659 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 12:27:36,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:27:36,690 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:27:36,784 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:27:36,784 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 75 [2020-09-25 12:27:36,784 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:27:36,784 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 108 [2020-09-25 12:27:36,785 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:27:36,785 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:27:36,785 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 12:27:36,785 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 12:27:36,786 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 74 [2020-09-25 12:27:36,786 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:27:36,834 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2020-09-25 12:27:36,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:27:36,862 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:27:36,969 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:27:36,970 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 85 [2020-09-25 12:27:36,970 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:27:36,970 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 120 [2020-09-25 12:27:36,970 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:27:36,970 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:27:36,970 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 12:27:36,970 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 12:27:36,970 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 84 [2020-09-25 12:27:36,971 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 12:27:37,056 INFO L134 CoverageAnalysis]: Checked inductivity of 160 backedges. 157 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-09-25 12:27:37,057 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1724829168] [2020-09-25 12:27:37,057 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 12:27:37,057 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-09-25 12:27:37,057 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1256276997] [2020-09-25 12:27:37,058 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-09-25 12:27:37,058 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 12:27:37,058 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-09-25 12:27:37,058 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2020-09-25 12:27:37,059 INFO L87 Difference]: Start difference. First operand 2319 states and 2924 transitions. Second operand 10 states. [2020-09-25 12:27:41,494 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 12:27:41,494 INFO L93 Difference]: Finished difference Result 5544 states and 7450 transitions. [2020-09-25 12:27:41,495 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-09-25 12:27:41,495 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 226 [2020-09-25 12:27:41,496 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 12:27:41,516 INFO L225 Difference]: With dead ends: 5544 [2020-09-25 12:27:41,516 INFO L226 Difference]: Without dead ends: 3885 [2020-09-25 12:27:41,524 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 70 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=107, Invalid=313, Unknown=0, NotChecked=0, Total=420 [2020-09-25 12:27:41,529 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3885 states. [2020-09-25 12:27:41,619 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3885 to 3783. [2020-09-25 12:27:41,619 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3783 states. [2020-09-25 12:27:41,632 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3783 states to 3783 states and 4879 transitions. [2020-09-25 12:27:41,632 INFO L78 Accepts]: Start accepts. Automaton has 3783 states and 4879 transitions. Word has length 226 [2020-09-25 12:27:41,633 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 12:27:41,633 INFO L479 AbstractCegarLoop]: Abstraction has 3783 states and 4879 transitions. [2020-09-25 12:27:41,633 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-09-25 12:27:41,633 INFO L276 IsEmpty]: Start isEmpty. Operand 3783 states and 4879 transitions. [2020-09-25 12:27:41,638 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 231 [2020-09-25 12:27:41,638 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 12:27:41,638 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, 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] [2020-09-25 12:27:41,639 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-25 12:27:41,639 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 12:27:41,639 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 12:27:41,639 INFO L82 PathProgramCache]: Analyzing trace with hash -477888366, now seen corresponding path program 1 times [2020-09-25 12:27:41,640 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 12:27:41,640 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1092557951] [2020-09-25 12:27:41,640 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 12:27:41,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:27:41,717 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:27:41,798 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:27:42,033 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:27:42,195 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:27:43,452 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:27:43,633 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:27:44,291 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:27:46,482 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:27:46,716 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:27:46,717 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 243 [2020-09-25 12:27:46,717 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-09-25 12:27:46,717 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5033 [2020-09-25 12:27:46,717 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:27:46,718 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:27:46,718 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-25 12:27:46,718 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-09-25 12:27:46,718 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 196 [2020-09-25 12:27:46,718 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 12:27:46,844 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 12:27:46,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:27:46,849 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:27:46,867 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:27:46,867 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 12:27:46,867 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:27:46,868 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-09-25 12:27:46,868 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:27:46,868 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:27:46,868 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 12:27:46,868 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:27:46,869 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-09-25 12:27:46,869 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:27:46,896 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 12:27:46,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:27:46,931 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:27:46,996 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:27:47,047 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:27:47,048 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 85 [2020-09-25 12:27:47,048 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 12:27:47,048 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 133 [2020-09-25 12:27:47,049 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:27:47,049 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:27:47,049 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 12:27:47,050 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:27:47,050 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 74 [2020-09-25 12:27:47,050 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:27:47,078 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2020-09-25 12:27:47,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:27:47,113 FATAL L256 erpolLogProxyWrapper]: Now shrinking...