/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 SequenceOfStatements --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=BIGGEST --traceabstraction.additional.smt.options log-additional-information=true --traceabstraction.additional.smt.options unknown-allowed=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem15_label44.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-12 14:17:42,236 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-12 14:17:42,240 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-12 14:17:42,289 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-12 14:17:42,289 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-12 14:17:42,298 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-12 14:17:42,301 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-12 14:17:42,305 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-12 14:17:42,308 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-12 14:17:42,312 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-12 14:17:42,313 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-12 14:17:42,314 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-12 14:17:42,314 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-12 14:17:42,318 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-12 14:17:42,321 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-12 14:17:42,324 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-12 14:17:42,325 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-12 14:17:42,328 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-12 14:17:42,330 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-12 14:17:42,340 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-12 14:17:42,344 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-12 14:17:42,346 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-12 14:17:42,347 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-12 14:17:42,348 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-12 14:17:42,350 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-12 14:17:42,350 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-12 14:17:42,350 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-12 14:17:42,351 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-12 14:17:42,352 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-12 14:17:42,353 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-12 14:17:42,353 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-12 14:17:42,354 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-12 14:17:42,354 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-12 14:17:42,355 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-12 14:17:42,356 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-12 14:17:42,356 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-12 14:17:42,357 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-12 14:17:42,357 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-12 14:17:42,358 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-12 14:17:42,358 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-12 14:17:42,359 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-12 14:17:42,360 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 [2020-10-12 14:17:42,383 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-12 14:17:42,383 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-12 14:17:42,384 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-12 14:17:42,385 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-12 14:17:42,385 INFO L138 SettingsManager]: * Use SBE=true [2020-10-12 14:17:42,385 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-12 14:17:42,385 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-12 14:17:42,385 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-12 14:17:42,386 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-12 14:17:42,386 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-12 14:17:42,386 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-12 14:17:42,386 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-12 14:17:42,386 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-12 14:17:42,387 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-12 14:17:42,387 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-12 14:17:42,387 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-12 14:17:42,387 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-12 14:17:42,387 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-12 14:17:42,388 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-12 14:17:42,388 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-12 14:17:42,388 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-12 14:17:42,388 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-12 14:17:42,389 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-12 14:17:42,389 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-12 14:17:42,389 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-12 14:17:42,389 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-12 14:17:42,389 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-12 14:17:42,390 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-12 14:17:42,390 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-12 14:17:42,390 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 -> SequenceOfStatements 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=BIGGEST;log-additional-information=true;unknown-allowed=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=BIGGEST;log-additional-information=true;unknown-allowed=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=BIGGEST;log-additional-information=true;unknown-allowed=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=BIGGEST;log-additional-information=true;unknown-allowed=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=BIGGEST;log-additional-information=true;unknown-allowed=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=BIGGEST;log-additional-information=true;unknown-allowed=true; [2020-10-12 14:17:42,729 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-12 14:17:42,746 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-12 14:17:42,750 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-12 14:17:42,753 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-12 14:17:42,754 INFO L275 PluginConnector]: CDTParser initialized [2020-10-12 14:17:42,755 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem15_label44.c [2020-10-12 14:17:42,845 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/0a8383f3a/8a15456f84484d70b558423ebb8bb704/FLAGebe565e4a [2020-10-12 14:17:43,580 INFO L306 CDTParser]: Found 1 translation units. [2020-10-12 14:17:43,580 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem15_label44.c [2020-10-12 14:17:43,603 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/0a8383f3a/8a15456f84484d70b558423ebb8bb704/FLAGebe565e4a [2020-10-12 14:17:43,725 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/0a8383f3a/8a15456f84484d70b558423ebb8bb704 [2020-10-12 14:17:43,739 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-12 14:17:43,742 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-12 14:17:43,746 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-12 14:17:43,747 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-12 14:17:43,751 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-12 14:17:43,753 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.10 02:17:43" (1/1) ... [2020-10-12 14:17:43,758 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@29eb21d5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 02:17:43, skipping insertion in model container [2020-10-12 14:17:43,759 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.10 02:17:43" (1/1) ... [2020-10-12 14:17:43,768 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-12 14:17:43,847 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-12 14:17:44,899 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-12 14:17:44,911 INFO L203 MainTranslator]: Completed pre-run [2020-10-12 14:17:45,376 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-12 14:17:45,401 INFO L208 MainTranslator]: Completed translation [2020-10-12 14:17:45,403 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 02:17:45 WrapperNode [2020-10-12 14:17:45,403 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-12 14:17:45,404 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-12 14:17:45,405 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-12 14:17:45,405 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-12 14:17:45,429 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 02:17:45" (1/1) ... [2020-10-12 14:17:45,432 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 02:17:45" (1/1) ... [2020-10-12 14:17:45,488 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 02:17:45" (1/1) ... [2020-10-12 14:17:45,489 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 02:17:45" (1/1) ... [2020-10-12 14:17:45,591 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 02:17:45" (1/1) ... [2020-10-12 14:17:45,640 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 02:17:45" (1/1) ... [2020-10-12 14:17:45,666 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 02:17:45" (1/1) ... [2020-10-12 14:17:45,702 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-12 14:17:45,703 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-12 14:17:45,703 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-12 14:17:45,704 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-12 14:17:45,705 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 02:17:45" (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 [2020-10-12 14:17:45,806 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-12 14:17:45,806 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-12 14:17:45,807 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-10-12 14:17:45,807 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2020-10-12 14:17:45,807 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-12 14:17:45,807 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-10-12 14:17:45,808 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2020-10-12 14:17:45,809 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-12 14:17:45,809 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-12 14:17:45,810 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-12 14:17:45,810 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-12 14:17:45,810 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-12 14:17:45,811 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-12 14:17:52,433 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-12 14:17:52,433 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-12 14:17:52,442 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.10 02:17:52 BoogieIcfgContainer [2020-10-12 14:17:52,442 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-12 14:17:52,444 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-12 14:17:52,444 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-12 14:17:52,449 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-12 14:17:52,450 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.10 02:17:43" (1/3) ... [2020-10-12 14:17:52,451 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@33a20f2c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.10 02:17:52, skipping insertion in model container [2020-10-12 14:17:52,452 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 02:17:45" (2/3) ... [2020-10-12 14:17:52,452 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@33a20f2c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.10 02:17:52, skipping insertion in model container [2020-10-12 14:17:52,452 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.10 02:17:52" (3/3) ... [2020-10-12 14:17:52,455 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem15_label44.c [2020-10-12 14:17:52,472 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-12 14:17:52,484 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-12 14:17:52,505 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-12 14:17:52,545 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-12 14:17:52,546 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-12 14:17:52,546 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-12 14:17:52,546 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-12 14:17:52,546 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-12 14:17:52,547 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-12 14:17:52,547 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-12 14:17:52,547 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-12 14:17:52,586 INFO L276 IsEmpty]: Start isEmpty. Operand 437 states. [2020-10-12 14:17:52,602 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2020-10-12 14:17:52,602 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 14:17:52,604 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] [2020-10-12 14:17:52,605 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 14:17:52,617 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 14:17:52,618 INFO L82 PathProgramCache]: Analyzing trace with hash 1323114568, now seen corresponding path program 1 times [2020-10-12 14:17:52,635 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 14:17:52,636 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1409204419] [2020-10-12 14:17:52,636 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 14:17:52,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:17:53,093 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:17:53,587 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:17:53,588 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 80 [2020-10-12 14:17:53,588 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 14:17:53,588 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 594 [2020-10-12 14:17:53,591 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:17:53,591 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-12 14:17:53,591 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-12 14:17:53,592 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 74 [2020-10-12 14:17:53,592 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-12 14:17:53,811 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 14:17:53,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:17:53,822 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:17:53,835 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:17:53,835 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 14:17:53,836 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 14:17:53,836 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-12 14:17:53,837 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:17:53,837 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 14:17:53,837 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 14:17:53,837 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-12 14:17:53,838 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 14:17:53,872 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 14:17:53,874 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1409204419] [2020-10-12 14:17:53,876 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 14:17:53,877 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-12 14:17:53,878 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1051625459] [2020-10-12 14:17:53,885 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-12 14:17:53,885 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 14:17:53,901 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-12 14:17:53,902 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-12 14:17:53,905 INFO L87 Difference]: Start difference. First operand 437 states. Second operand 5 states. [2020-10-12 14:18:00,976 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 14:18:00,977 INFO L93 Difference]: Finished difference Result 1203 states and 2166 transitions. [2020-10-12 14:18:00,983 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-12 14:18:00,984 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 72 [2020-10-12 14:18:00,985 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 14:18:01,011 INFO L225 Difference]: With dead ends: 1203 [2020-10-12 14:18:01,012 INFO L226 Difference]: Without dead ends: 702 [2020-10-12 14:18:01,027 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-12 14:18:01,052 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 702 states. [2020-10-12 14:18:01,158 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 702 to 696. [2020-10-12 14:18:01,160 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 696 states. [2020-10-12 14:18:01,165 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 696 states to 696 states and 1015 transitions. [2020-10-12 14:18:01,167 INFO L78 Accepts]: Start accepts. Automaton has 696 states and 1015 transitions. Word has length 72 [2020-10-12 14:18:01,168 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 14:18:01,169 INFO L479 AbstractCegarLoop]: Abstraction has 696 states and 1015 transitions. [2020-10-12 14:18:01,169 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-12 14:18:01,169 INFO L276 IsEmpty]: Start isEmpty. Operand 696 states and 1015 transitions. [2020-10-12 14:18:01,183 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 152 [2020-10-12 14:18:01,183 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 14:18:01,184 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 14:18:01,184 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-12 14:18:01,184 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 14:18:01,185 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 14:18:01,185 INFO L82 PathProgramCache]: Analyzing trace with hash -394780911, now seen corresponding path program 1 times [2020-10-12 14:18:01,186 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 14:18:01,186 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1016008772] [2020-10-12 14:18:01,186 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 14:18:01,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:18:01,324 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:18:01,744 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:18:02,705 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:18:02,853 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:18:02,854 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 161 [2020-10-12 14:18:02,854 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-12 14:18:02,854 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1579 [2020-10-12 14:18:02,855 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:18:02,856 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-12 14:18:02,857 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-12 14:18:02,857 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 155 [2020-10-12 14:18:02,857 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-12 14:18:02,960 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 14:18:02,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:18:02,967 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:18:02,979 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:18:02,979 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 14:18:02,979 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 14:18:02,980 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-12 14:18:02,984 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:18:02,984 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 14:18:02,984 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 14:18:02,984 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-12 14:18:02,985 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 14:18:02,999 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-12 14:18:03,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:18:03,041 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:18:03,115 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:18:03,308 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:18:03,308 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 80 [2020-10-12 14:18:03,309 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 14:18:03,309 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 283 [2020-10-12 14:18:03,309 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:18:03,309 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 14:18:03,310 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 14:18:03,310 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 80 [2020-10-12 14:18:03,310 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 14:18:03,414 INFO L134 CoverageAnalysis]: Checked inductivity of 65 backedges. 0 proven. 62 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-10-12 14:18:03,414 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1016008772] [2020-10-12 14:18:03,415 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 14:18:03,415 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-12 14:18:03,416 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [838726642] [2020-10-12 14:18:03,418 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-12 14:18:03,418 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 14:18:03,419 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-12 14:18:03,419 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-10-12 14:18:03,420 INFO L87 Difference]: Start difference. First operand 696 states and 1015 transitions. Second operand 6 states. [2020-10-12 14:18:13,699 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 14:18:13,700 INFO L93 Difference]: Finished difference Result 2028 states and 2973 transitions. [2020-10-12 14:18:13,700 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-12 14:18:13,701 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 151 [2020-10-12 14:18:13,702 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 14:18:13,712 INFO L225 Difference]: With dead ends: 2028 [2020-10-12 14:18:13,712 INFO L226 Difference]: Without dead ends: 1338 [2020-10-12 14:18:13,715 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-10-12 14:18:13,720 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1338 states. [2020-10-12 14:18:13,816 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1338 to 1336. [2020-10-12 14:18:13,816 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1336 states. [2020-10-12 14:18:13,825 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1336 states to 1336 states and 1730 transitions. [2020-10-12 14:18:13,826 INFO L78 Accepts]: Start accepts. Automaton has 1336 states and 1730 transitions. Word has length 151 [2020-10-12 14:18:13,829 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 14:18:13,830 INFO L479 AbstractCegarLoop]: Abstraction has 1336 states and 1730 transitions. [2020-10-12 14:18:13,830 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-12 14:18:13,830 INFO L276 IsEmpty]: Start isEmpty. Operand 1336 states and 1730 transitions. [2020-10-12 14:18:13,885 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 247 [2020-10-12 14:18:13,886 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 14:18:13,886 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 14:18:13,887 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-12 14:18:13,887 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 14:18:13,892 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 14:18:13,892 INFO L82 PathProgramCache]: Analyzing trace with hash 2044450927, now seen corresponding path program 1 times [2020-10-12 14:18:13,893 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 14:18:13,893 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [719615646] [2020-10-12 14:18:13,893 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 14:18:14,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:18:14,108 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:18:14,234 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:18:14,398 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:18:15,982 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:18:17,349 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:18:17,498 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:18:19,047 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:18:19,047 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 258 [2020-10-12 14:18:19,047 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-12 14:18:19,048 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5016 [2020-10-12 14:18:19,048 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:18:19,048 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-10-12 14:18:19,048 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-12 14:18:19,048 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 252 [2020-10-12 14:18:19,049 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 14:18:19,194 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 14:18:19,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:18:19,199 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:18:19,204 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:18:19,205 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 14:18:19,205 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 14:18:19,205 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-12 14:18:19,206 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:18:19,206 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 14:18:19,206 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 14:18:19,206 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-12 14:18:19,207 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 14:18:19,228 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-12 14:18:19,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:18:19,261 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:18:19,408 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:18:19,409 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 96 [2020-10-12 14:18:19,409 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 14:18:19,409 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 160 [2020-10-12 14:18:19,409 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:18:19,410 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 14:18:19,410 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 14:18:19,410 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 96 [2020-10-12 14:18:19,410 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 14:18:19,734 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2020-10-12 14:18:19,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:18:19,776 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:18:19,817 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:18:20,315 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:18:20,319 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 80 [2020-10-12 14:18:20,319 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 14:18:20,319 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 555 [2020-10-12 14:18:20,320 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:18:20,320 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-12 14:18:20,320 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 14:18:20,320 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 80 [2020-10-12 14:18:20,321 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 14:18:21,367 INFO L134 CoverageAnalysis]: Checked inductivity of 209 backedges. 26 proven. 179 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-10-12 14:18:21,368 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [719615646] [2020-10-12 14:18:21,368 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 14:18:21,368 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-10-12 14:18:21,369 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1772570914] [2020-10-12 14:18:21,372 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-12 14:18:21,374 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 14:18:21,374 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-12 14:18:21,377 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=100, Unknown=0, NotChecked=0, Total=132 [2020-10-12 14:18:21,378 INFO L87 Difference]: Start difference. First operand 1336 states and 1730 transitions. Second operand 12 states. [2020-10-12 14:18:21,578 WARN L193 SmtUtils]: Spent 119.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 44 [2020-10-12 14:18:23,290 WARN L193 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 54 [2020-10-12 14:18:26,033 WARN L193 SmtUtils]: Spent 138.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 53 [2020-10-12 14:18:28,282 WARN L193 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 47 [2020-10-12 14:18:33,941 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 14:18:33,941 INFO L93 Difference]: Finished difference Result 3096 states and 4239 transitions. [2020-10-12 14:18:33,943 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2020-10-12 14:18:33,943 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 246 [2020-10-12 14:18:33,944 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 14:18:33,960 INFO L225 Difference]: With dead ends: 3096 [2020-10-12 14:18:33,961 INFO L226 Difference]: Without dead ends: 2384 [2020-10-12 14:18:33,964 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 314 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=342, Invalid=918, Unknown=0, NotChecked=0, Total=1260 [2020-10-12 14:18:33,967 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2384 states. [2020-10-12 14:18:34,047 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2384 to 2292. [2020-10-12 14:18:34,047 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2292 states. [2020-10-12 14:18:34,057 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2292 states to 2292 states and 2941 transitions. [2020-10-12 14:18:34,058 INFO L78 Accepts]: Start accepts. Automaton has 2292 states and 2941 transitions. Word has length 246 [2020-10-12 14:18:34,059 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 14:18:34,059 INFO L479 AbstractCegarLoop]: Abstraction has 2292 states and 2941 transitions. [2020-10-12 14:18:34,059 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-12 14:18:34,059 INFO L276 IsEmpty]: Start isEmpty. Operand 2292 states and 2941 transitions. [2020-10-12 14:18:34,067 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 369 [2020-10-12 14:18:34,067 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 14:18:34,068 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 14:18:34,068 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-12 14:18:34,068 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 14:18:34,078 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 14:18:34,078 INFO L82 PathProgramCache]: Analyzing trace with hash 1427484232, now seen corresponding path program 1 times [2020-10-12 14:18:34,079 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 14:18:34,079 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1669752733] [2020-10-12 14:18:34,079 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 14:18:34,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:18:34,307 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:18:34,452 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:18:35,001 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:18:39,154 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:18:39,265 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:18:39,266 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 380 [2020-10-12 14:18:39,266 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-12 14:18:39,266 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5086 [2020-10-12 14:18:39,271 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:18:39,272 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-12 14:18:39,272 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-12 14:18:39,273 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 206 [2020-10-12 14:18:39,273 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 14:18:39,436 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 14:18:39,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:18:39,442 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:18:39,448 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:18:39,449 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 14:18:39,449 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 14:18:39,450 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-12 14:18:39,450 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:18:39,450 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 14:18:39,451 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 14:18:39,451 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-12 14:18:39,451 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 14:18:39,482 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-12 14:18:39,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:18:39,596 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:18:40,055 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:18:40,055 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 201 [2020-10-12 14:18:40,056 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 14:18:40,056 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 507 [2020-10-12 14:18:40,056 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:18:40,057 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 14:18:40,057 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 14:18:40,057 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 201 [2020-10-12 14:18:40,058 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 14:18:40,673 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 208 [2020-10-12 14:18:40,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:18:40,711 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:18:40,756 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:18:40,756 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 97 [2020-10-12 14:18:40,757 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 14:18:40,757 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 59 [2020-10-12 14:18:40,757 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:18:40,757 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 14:18:40,758 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 94 [2020-10-12 14:18:40,758 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 14:18:40,758 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 14:18:41,381 INFO L134 CoverageAnalysis]: Checked inductivity of 226 backedges. 130 proven. 91 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-10-12 14:18:41,382 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1669752733] [2020-10-12 14:18:41,383 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 14:18:41,383 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-12 14:18:41,384 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1965287002] [2020-10-12 14:18:41,385 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-12 14:18:41,385 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 14:18:41,386 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-12 14:18:41,386 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-12 14:18:41,387 INFO L87 Difference]: Start difference. First operand 2292 states and 2941 transitions. Second operand 7 states. [2020-10-12 14:18:51,206 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 14:18:51,206 INFO L93 Difference]: Finished difference Result 4312 states and 5619 transitions. [2020-10-12 14:18:51,215 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-12 14:18:51,215 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 368 [2020-10-12 14:18:51,217 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 14:18:51,233 INFO L225 Difference]: With dead ends: 4312 [2020-10-12 14:18:51,234 INFO L226 Difference]: Without dead ends: 2333 [2020-10-12 14:18:51,239 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=31, Invalid=59, Unknown=0, NotChecked=0, Total=90 [2020-10-12 14:18:51,243 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2333 states. [2020-10-12 14:18:51,312 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2333 to 2299. [2020-10-12 14:18:51,312 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2299 states. [2020-10-12 14:18:51,321 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2299 states to 2299 states and 2947 transitions. [2020-10-12 14:18:51,321 INFO L78 Accepts]: Start accepts. Automaton has 2299 states and 2947 transitions. Word has length 368 [2020-10-12 14:18:51,322 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 14:18:51,322 INFO L479 AbstractCegarLoop]: Abstraction has 2299 states and 2947 transitions. [2020-10-12 14:18:51,322 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-12 14:18:51,322 INFO L276 IsEmpty]: Start isEmpty. Operand 2299 states and 2947 transitions. [2020-10-12 14:18:51,334 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 443 [2020-10-12 14:18:51,334 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 14:18:51,335 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 14:18:51,335 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-12 14:18:51,336 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 14:18:51,336 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 14:18:51,336 INFO L82 PathProgramCache]: Analyzing trace with hash -1638924929, now seen corresponding path program 1 times [2020-10-12 14:18:51,337 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 14:18:51,337 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1505238746] [2020-10-12 14:18:51,337 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 14:18:51,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:18:51,544 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:18:52,056 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:18:52,473 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:18:54,695 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:18:54,695 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 454 [2020-10-12 14:18:54,696 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-12 14:18:54,696 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3234 [2020-10-12 14:18:54,696 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:18:54,696 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 14:18:54,696 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 284 [2020-10-12 14:18:54,697 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 99 [2020-10-12 14:18:54,697 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 14:18:54,845 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 14:18:54,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:18:54,848 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:18:54,852 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:18:54,852 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 14:18:54,852 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 14:18:54,858 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-12 14:18:54,859 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:18:54,859 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 14:18:54,859 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 14:18:54,859 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 14:18:54,860 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 14:18:54,881 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-12 14:18:54,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:18:55,050 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:18:55,401 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:18:55,401 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 275 [2020-10-12 14:18:55,401 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 14:18:55,402 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 423 [2020-10-12 14:18:55,402 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:18:55,402 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 14:18:55,403 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 14:18:55,404 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 269 [2020-10-12 14:18:55,407 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 5 [2020-10-12 14:18:55,636 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-12 14:18:55,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:18:55,680 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:18:55,966 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:18:55,967 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 97 [2020-10-12 14:18:55,967 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 14:18:55,967 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 307 [2020-10-12 14:18:55,968 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:18:55,968 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 14:18:55,968 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 14:18:55,969 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 97 [2020-10-12 14:18:55,969 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 14:18:56,363 INFO L134 CoverageAnalysis]: Checked inductivity of 226 backedges. 223 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-12 14:18:56,364 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1505238746] [2020-10-12 14:18:56,364 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 14:18:56,364 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-12 14:18:56,365 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [42842784] [2020-10-12 14:18:56,366 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-12 14:18:56,366 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 14:18:56,366 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-12 14:18:56,367 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-10-12 14:18:56,367 INFO L87 Difference]: Start difference. First operand 2299 states and 2947 transitions. Second operand 8 states. [2020-10-12 14:19:12,360 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 14:19:12,360 INFO L93 Difference]: Finished difference Result 5940 states and 8441 transitions. [2020-10-12 14:19:12,365 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-12 14:19:12,365 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 442 [2020-10-12 14:19:12,366 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 14:19:12,395 INFO L225 Difference]: With dead ends: 5940 [2020-10-12 14:19:12,395 INFO L226 Difference]: Without dead ends: 4263 [2020-10-12 14:19:12,402 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 35 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=65, Invalid=175, Unknown=0, NotChecked=0, Total=240 [2020-10-12 14:19:12,408 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4263 states. [2020-10-12 14:19:12,537 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4263 to 4229. [2020-10-12 14:19:12,537 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4229 states. [2020-10-12 14:19:12,556 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4229 states to 4229 states and 5600 transitions. [2020-10-12 14:19:12,557 INFO L78 Accepts]: Start accepts. Automaton has 4229 states and 5600 transitions. Word has length 442 [2020-10-12 14:19:12,558 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 14:19:12,558 INFO L479 AbstractCegarLoop]: Abstraction has 4229 states and 5600 transitions. [2020-10-12 14:19:12,558 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-12 14:19:12,558 INFO L276 IsEmpty]: Start isEmpty. Operand 4229 states and 5600 transitions. [2020-10-12 14:19:12,573 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 474 [2020-10-12 14:19:12,574 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 14:19:12,574 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 14:19:12,575 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-12 14:19:12,575 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 14:19:12,575 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 14:19:12,576 INFO L82 PathProgramCache]: Analyzing trace with hash -657050250, now seen corresponding path program 1 times [2020-10-12 14:19:12,576 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 14:19:12,577 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1493218157] [2020-10-12 14:19:12,577 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 14:19:12,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:19:12,751 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:19:12,946 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:19:13,332 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:19:14,918 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:19:15,184 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:19:17,559 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:19:17,698 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:19:17,698 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 487 [2020-10-12 14:19:17,698 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-12 14:19:17,698 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5008 [2020-10-12 14:19:17,699 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:19:17,699 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-12 14:19:17,699 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-12 14:19:17,699 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 411 [2020-10-12 14:19:17,699 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 14:19:17,826 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 14:19:17,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:19:17,833 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:19:17,838 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:19:17,838 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 14:19:17,839 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 14:19:17,839 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-12 14:19:17,839 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:19:17,839 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 14:19:17,839 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 14:19:17,840 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-12 14:19:17,840 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 14:19:17,867 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-12 14:19:17,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:19:17,903 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:19:18,025 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:19:18,026 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 96 [2020-10-12 14:19:18,026 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 14:19:18,026 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 138 [2020-10-12 14:19:18,026 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:19:18,026 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 14:19:18,027 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 14:19:18,027 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 96 [2020-10-12 14:19:18,027 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 14:19:18,090 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2020-10-12 14:19:18,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:19:18,178 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:19:18,496 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:19:18,497 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 201 [2020-10-12 14:19:18,497 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 14:19:18,497 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 355 [2020-10-12 14:19:18,498 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:19:18,498 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 14:19:18,498 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 14:19:18,499 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 201 [2020-10-12 14:19:18,499 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 14:19:18,665 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 303 [2020-10-12 14:19:18,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:19:18,735 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:19:19,061 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:19:19,061 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 107 [2020-10-12 14:19:19,062 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 14:19:19,062 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 350 [2020-10-12 14:19:19,062 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:19:19,062 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 14:19:19,063 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 14:19:19,063 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 107 [2020-10-12 14:19:19,063 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 14:19:19,459 INFO L134 CoverageAnalysis]: Checked inductivity of 491 backedges. 197 proven. 191 refuted. 0 times theorem prover too weak. 103 trivial. 0 not checked. [2020-10-12 14:19:19,459 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1493218157] [2020-10-12 14:19:19,460 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 14:19:19,460 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-12 14:19:19,460 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2063694474] [2020-10-12 14:19:19,461 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-12 14:19:19,462 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 14:19:19,462 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-12 14:19:19,462 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2020-10-12 14:19:19,463 INFO L87 Difference]: Start difference. First operand 4229 states and 5600 transitions. Second operand 8 states. [2020-10-12 14:19:28,667 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 14:19:28,668 INFO L93 Difference]: Finished difference Result 8861 states and 12433 transitions. [2020-10-12 14:19:28,675 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-12 14:19:28,675 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 473 [2020-10-12 14:19:28,677 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 14:19:28,704 INFO L225 Difference]: With dead ends: 8861 [2020-10-12 14:19:28,704 INFO L226 Difference]: Without dead ends: 6185 [2020-10-12 14:19:28,712 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 7 SyntacticMatches, 1 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=51, Invalid=105, Unknown=0, NotChecked=0, Total=156 [2020-10-12 14:19:28,719 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6185 states. [2020-10-12 14:19:28,850 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6185 to 5793. [2020-10-12 14:19:28,851 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5793 states. [2020-10-12 14:19:28,864 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5793 states to 5793 states and 7370 transitions. [2020-10-12 14:19:28,865 INFO L78 Accepts]: Start accepts. Automaton has 5793 states and 7370 transitions. Word has length 473 [2020-10-12 14:19:28,865 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 14:19:28,866 INFO L479 AbstractCegarLoop]: Abstraction has 5793 states and 7370 transitions. [2020-10-12 14:19:28,866 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-12 14:19:28,866 INFO L276 IsEmpty]: Start isEmpty. Operand 5793 states and 7370 transitions. [2020-10-12 14:19:28,881 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 554 [2020-10-12 14:19:28,882 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 14:19:28,882 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 14:19:28,883 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-12 14:19:28,883 INFO L427 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 14:19:28,883 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 14:19:28,883 INFO L82 PathProgramCache]: Analyzing trace with hash 1631670113, now seen corresponding path program 1 times [2020-10-12 14:19:28,884 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 14:19:28,884 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [193464244] [2020-10-12 14:19:28,884 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 14:19:28,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:19:29,002 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:19:29,171 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:19:29,380 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:19:29,550 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:19:32,344 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:19:34,049 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:19:34,050 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 569 [2020-10-12 14:19:34,050 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-12 14:19:34,050 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5081 [2020-10-12 14:19:34,051 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:19:34,051 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-12 14:19:34,051 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 105 [2020-10-12 14:19:34,051 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 285 [2020-10-12 14:19:34,051 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 14:19:34,166 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 14:19:34,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:19:34,169 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:19:34,170 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:19:34,171 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 14:19:34,171 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 14:19:34,171 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 14:19:34,171 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:19:34,171 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 14:19:34,171 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 14:19:34,171 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 14:19:34,172 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 14:19:34,192 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-12 14:19:34,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:19:34,213 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:19:34,251 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:19:34,251 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 96 [2020-10-12 14:19:34,251 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 14:19:34,251 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 45 [2020-10-12 14:19:34,251 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:19:34,251 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 14:19:34,252 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 14:19:34,252 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 90 [2020-10-12 14:19:34,252 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 14:19:34,271 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2020-10-12 14:19:34,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:19:34,322 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:19:34,371 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:19:34,604 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:19:34,604 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 201 [2020-10-12 14:19:34,605 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 14:19:34,605 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 302 [2020-10-12 14:19:34,605 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:19:34,605 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 14:19:34,605 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 14:19:34,605 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 201 [2020-10-12 14:19:34,605 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 14:19:34,700 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 303 [2020-10-12 14:19:34,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:19:34,720 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:19:34,851 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:19:34,852 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 81 [2020-10-12 14:19:34,852 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 14:19:34,852 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 140 [2020-10-12 14:19:34,852 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:19:34,852 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 14:19:34,852 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 14:19:34,852 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 81 [2020-10-12 14:19:34,853 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 14:19:34,891 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 383 [2020-10-12 14:19:34,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:19:34,923 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:19:34,959 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:19:34,960 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 107 [2020-10-12 14:19:34,960 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 14:19:34,960 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 49 [2020-10-12 14:19:34,960 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:19:34,960 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 14:19:34,960 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 104 [2020-10-12 14:19:34,960 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 14:19:34,961 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 14:19:35,221 INFO L134 CoverageAnalysis]: Checked inductivity of 796 backedges. 510 proven. 182 refuted. 0 times theorem prover too weak. 104 trivial. 0 not checked. [2020-10-12 14:19:35,224 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [193464244] [2020-10-12 14:19:35,224 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 14:19:35,225 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-12 14:19:35,225 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1047569232] [2020-10-12 14:19:35,240 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-12 14:19:35,241 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 14:19:35,241 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-12 14:19:35,241 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2020-10-12 14:19:35,241 INFO L87 Difference]: Start difference. First operand 5793 states and 7370 transitions. Second operand 8 states. [2020-10-12 14:19:48,961 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 14:19:48,961 INFO L93 Difference]: Finished difference Result 12338 states and 16594 transitions. [2020-10-12 14:19:48,962 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-12 14:19:48,962 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 553 [2020-10-12 14:19:48,963 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 14:19:48,996 INFO L225 Difference]: With dead ends: 12338 [2020-10-12 14:19:48,996 INFO L226 Difference]: Without dead ends: 7164 [2020-10-12 14:19:49,011 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=64, Invalid=146, Unknown=0, NotChecked=0, Total=210 [2020-10-12 14:19:49,020 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7164 states. [2020-10-12 14:19:49,187 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7164 to 7098. [2020-10-12 14:19:49,187 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7098 states. [2020-10-12 14:19:49,202 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7098 states to 7098 states and 8875 transitions. [2020-10-12 14:19:49,204 INFO L78 Accepts]: Start accepts. Automaton has 7098 states and 8875 transitions. Word has length 553 [2020-10-12 14:19:49,204 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 14:19:49,204 INFO L479 AbstractCegarLoop]: Abstraction has 7098 states and 8875 transitions. [2020-10-12 14:19:49,205 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-12 14:19:49,205 INFO L276 IsEmpty]: Start isEmpty. Operand 7098 states and 8875 transitions. [2020-10-12 14:19:49,218 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 564 [2020-10-12 14:19:49,218 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 14:19:49,219 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 14:19:49,220 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-12 14:19:49,220 INFO L427 AbstractCegarLoop]: === Iteration 8 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 14:19:49,220 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 14:19:49,220 INFO L82 PathProgramCache]: Analyzing trace with hash -525711616, now seen corresponding path program 1 times [2020-10-12 14:19:49,221 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 14:19:49,221 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [657731503] [2020-10-12 14:19:49,221 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 14:19:49,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:19:49,439 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:19:49,600 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:19:50,416 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:19:51,233 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:19:54,408 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:19:54,409 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 577 [2020-10-12 14:19:54,409 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-12 14:19:54,409 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5054 [2020-10-12 14:19:54,409 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:19:54,409 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-12 14:19:54,410 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 505 [2020-10-12 14:19:54,410 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 57 [2020-10-12 14:19:54,410 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 14:19:54,821 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 14:19:54,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:19:54,824 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:19:54,826 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:19:54,826 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 14:19:54,826 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 14:19:54,826 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 14:19:54,827 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:19:54,827 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 14:19:54,827 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 14:19:54,827 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 14:19:54,828 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 14:19:54,850 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-12 14:19:54,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:19:54,869 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:19:54,938 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:19:54,938 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 275 [2020-10-12 14:19:54,938 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 14:19:54,939 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 71 [2020-10-12 14:19:54,939 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:19:54,939 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 14:19:54,939 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 14:19:54,939 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 14:19:54,939 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 14:19:55,031 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-12 14:19:55,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:19:55,038 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:19:55,058 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:19:55,058 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 112 [2020-10-12 14:19:55,058 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 14:19:55,059 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-10-12 14:19:55,059 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:19:55,059 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 14:19:55,059 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 14:19:55,059 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 14:19:55,060 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 14:19:55,078 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 393 [2020-10-12 14:19:55,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:19:55,103 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:19:55,158 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:19:55,158 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 107 [2020-10-12 14:19:55,158 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 14:19:55,158 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 65 [2020-10-12 14:19:55,159 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:19:55,159 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 14:19:55,159 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 14:19:55,159 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 101 [2020-10-12 14:19:55,159 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 14:19:55,446 INFO L134 CoverageAnalysis]: Checked inductivity of 518 backedges. 198 proven. 3 refuted. 0 times theorem prover too weak. 317 trivial. 0 not checked. [2020-10-12 14:19:55,446 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [657731503] [2020-10-12 14:19:55,447 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 14:19:55,447 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-12 14:19:55,447 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [558537735] [2020-10-12 14:19:55,448 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-12 14:19:55,448 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 14:19:55,449 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-12 14:19:55,449 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-10-12 14:19:55,449 INFO L87 Difference]: Start difference. First operand 7098 states and 8875 transitions. Second operand 8 states. [2020-10-12 14:20:04,010 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 14:20:04,010 INFO L93 Difference]: Finished difference Result 12597 states and 16401 transitions. [2020-10-12 14:20:04,012 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-10-12 14:20:04,012 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 563 [2020-10-12 14:20:04,016 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 14:20:04,055 INFO L225 Difference]: With dead ends: 12597 [2020-10-12 14:20:04,056 INFO L226 Difference]: Without dead ends: 6786 [2020-10-12 14:20:04,075 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 1 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=76, Invalid=134, Unknown=0, NotChecked=0, Total=210 [2020-10-12 14:20:04,083 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6786 states. [2020-10-12 14:20:04,205 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6786 to 6782. [2020-10-12 14:20:04,205 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6782 states. [2020-10-12 14:20:04,217 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6782 states to 6782 states and 8498 transitions. [2020-10-12 14:20:04,218 INFO L78 Accepts]: Start accepts. Automaton has 6782 states and 8498 transitions. Word has length 563 [2020-10-12 14:20:04,219 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 14:20:04,219 INFO L479 AbstractCegarLoop]: Abstraction has 6782 states and 8498 transitions. [2020-10-12 14:20:04,219 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-12 14:20:04,220 INFO L276 IsEmpty]: Start isEmpty. Operand 6782 states and 8498 transitions. [2020-10-12 14:20:04,229 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 581 [2020-10-12 14:20:04,230 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 14:20:04,230 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 14:20:04,230 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-12 14:20:04,231 INFO L427 AbstractCegarLoop]: === Iteration 9 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 14:20:04,231 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 14:20:04,231 INFO L82 PathProgramCache]: Analyzing trace with hash -1281572260, now seen corresponding path program 1 times [2020-10-12 14:20:04,232 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 14:20:04,236 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1417899133] [2020-10-12 14:20:04,236 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 14:20:04,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:20:04,421 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:20:04,591 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:20:05,417 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:20:05,686 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:20:07,001 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:20:09,414 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:20:09,414 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 594 [2020-10-12 14:20:09,414 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-12 14:20:09,415 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5051 [2020-10-12 14:20:09,415 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:20:09,415 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-12 14:20:09,415 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 397 [2020-10-12 14:20:09,415 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 196 [2020-10-12 14:20:09,415 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 14:20:09,509 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 14:20:09,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:20:09,512 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:20:09,513 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:20:09,513 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 14:20:09,513 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 14:20:09,514 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 14:20:09,514 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:20:09,514 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 14:20:09,514 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 14:20:09,514 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 14:20:09,514 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 14:20:09,530 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-12 14:20:09,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:20:09,545 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:20:09,597 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:20:09,598 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 275 [2020-10-12 14:20:09,598 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 14:20:09,598 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 54 [2020-10-12 14:20:09,598 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:20:09,598 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 14:20:09,598 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 14:20:09,598 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 14:20:09,599 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 14:20:09,739 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-12 14:20:09,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:20:09,764 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:20:09,811 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:20:09,811 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 112 [2020-10-12 14:20:09,812 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 14:20:09,812 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 57 [2020-10-12 14:20:09,812 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:20:09,812 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 14:20:09,812 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 14:20:09,812 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 106 [2020-10-12 14:20:09,812 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 14:20:09,831 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 393 [2020-10-12 14:20:09,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:20:09,870 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:20:09,970 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:20:09,970 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 124 [2020-10-12 14:20:09,970 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 14:20:09,971 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 117 [2020-10-12 14:20:09,971 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:20:09,971 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 14:20:09,971 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 14:20:09,971 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 124 [2020-10-12 14:20:09,971 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 14:20:10,190 INFO L134 CoverageAnalysis]: Checked inductivity of 538 backedges. 358 proven. 66 refuted. 0 times theorem prover too weak. 114 trivial. 0 not checked. [2020-10-12 14:20:10,190 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1417899133] [2020-10-12 14:20:10,190 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 14:20:10,191 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-12 14:20:10,191 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [88414890] [2020-10-12 14:20:10,192 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-12 14:20:10,192 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 14:20:10,192 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-12 14:20:10,192 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-10-12 14:20:10,192 INFO L87 Difference]: Start difference. First operand 6782 states and 8498 transitions. Second operand 6 states. [2020-10-12 14:20:20,805 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 14:20:20,805 INFO L93 Difference]: Finished difference Result 14668 states and 19737 transitions. [2020-10-12 14:20:20,812 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-12 14:20:20,812 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 580 [2020-10-12 14:20:20,814 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 14:20:20,851 INFO L225 Difference]: With dead ends: 14668 [2020-10-12 14:20:20,851 INFO L226 Difference]: Without dead ends: 10683 [2020-10-12 14:20:20,864 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-10-12 14:20:20,876 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10683 states. [2020-10-12 14:20:21,188 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10683 to 10670. [2020-10-12 14:20:21,189 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10670 states. [2020-10-12 14:20:21,215 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10670 states to 10670 states and 13869 transitions. [2020-10-12 14:20:21,217 INFO L78 Accepts]: Start accepts. Automaton has 10670 states and 13869 transitions. Word has length 580 [2020-10-12 14:20:21,219 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 14:20:21,219 INFO L479 AbstractCegarLoop]: Abstraction has 10670 states and 13869 transitions. [2020-10-12 14:20:21,219 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-12 14:20:21,219 INFO L276 IsEmpty]: Start isEmpty. Operand 10670 states and 13869 transitions. [2020-10-12 14:20:21,237 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 585 [2020-10-12 14:20:21,237 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 14:20:21,239 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 14:20:21,239 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-12 14:20:21,239 INFO L427 AbstractCegarLoop]: === Iteration 10 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 14:20:21,239 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 14:20:21,240 INFO L82 PathProgramCache]: Analyzing trace with hash 197313357, now seen corresponding path program 1 times [2020-10-12 14:20:21,240 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 14:20:21,241 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [239704370] [2020-10-12 14:20:21,241 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 14:20:21,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:20:21,494 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:20:21,706 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:20:23,460 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:20:23,851 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:20:25,953 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:20:25,954 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 598 [2020-10-12 14:20:25,954 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-12 14:20:25,954 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4561 [2020-10-12 14:20:25,954 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:20:25,954 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 14:20:25,954 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 526 [2020-10-12 14:20:25,954 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-12 14:20:25,954 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 14:20:26,071 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 14:20:26,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:20:26,073 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:20:26,074 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:20:26,075 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 14:20:26,075 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 14:20:26,075 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 14:20:26,075 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:20:26,075 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 14:20:26,075 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 14:20:26,075 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 14:20:26,076 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 14:20:26,094 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-12 14:20:26,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:20:26,109 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:20:26,164 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:20:26,164 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 275 [2020-10-12 14:20:26,165 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 14:20:26,165 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 57 [2020-10-12 14:20:26,165 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:20:26,165 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 14:20:26,165 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 14:20:26,165 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 14:20:26,165 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 14:20:26,301 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-12 14:20:26,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:20:26,308 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:20:26,325 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:20:26,326 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 112 [2020-10-12 14:20:26,326 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 14:20:26,326 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-10-12 14:20:26,326 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:20:26,326 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 14:20:26,326 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 14:20:26,327 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 14:20:26,327 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 14:20:26,343 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 393 [2020-10-12 14:20:26,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:20:26,371 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:20:26,428 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:20:26,428 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 128 [2020-10-12 14:20:26,428 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 14:20:26,429 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 67 [2020-10-12 14:20:26,429 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:20:26,429 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 14:20:26,429 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 14:20:26,429 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 122 [2020-10-12 14:20:26,429 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 14:20:26,608 INFO L134 CoverageAnalysis]: Checked inductivity of 544 backedges. 198 proven. 3 refuted. 0 times theorem prover too weak. 343 trivial. 0 not checked. [2020-10-12 14:20:26,608 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [239704370] [2020-10-12 14:20:26,609 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 14:20:26,609 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-12 14:20:26,609 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [169979363] [2020-10-12 14:20:26,609 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-12 14:20:26,610 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 14:20:26,610 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-12 14:20:26,610 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-12 14:20:26,610 INFO L87 Difference]: Start difference. First operand 10670 states and 13869 transitions. Second operand 5 states. [2020-10-12 14:20:35,552 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 14:20:35,552 INFO L93 Difference]: Finished difference Result 18556 states and 24843 transitions. [2020-10-12 14:20:35,554 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-12 14:20:35,554 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 584 [2020-10-12 14:20:35,555 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 14:20:35,590 INFO L225 Difference]: With dead ends: 18556 [2020-10-12 14:20:35,590 INFO L226 Difference]: Without dead ends: 10672 [2020-10-12 14:20:35,610 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 10 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-12 14:20:35,622 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10672 states. [2020-10-12 14:20:35,850 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10672 to 10670. [2020-10-12 14:20:35,850 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10670 states. [2020-10-12 14:20:35,877 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10670 states to 10670 states and 13857 transitions. [2020-10-12 14:20:35,877 INFO L78 Accepts]: Start accepts. Automaton has 10670 states and 13857 transitions. Word has length 584 [2020-10-12 14:20:35,878 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 14:20:35,879 INFO L479 AbstractCegarLoop]: Abstraction has 10670 states and 13857 transitions. [2020-10-12 14:20:35,879 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-12 14:20:35,879 INFO L276 IsEmpty]: Start isEmpty. Operand 10670 states and 13857 transitions. [2020-10-12 14:20:35,900 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 586 [2020-10-12 14:20:35,901 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 14:20:35,901 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 14:20:35,902 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-12 14:20:35,902 INFO L427 AbstractCegarLoop]: === Iteration 11 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 14:20:35,902 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 14:20:35,902 INFO L82 PathProgramCache]: Analyzing trace with hash 681387416, now seen corresponding path program 1 times [2020-10-12 14:20:35,903 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 14:20:35,903 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2066154471] [2020-10-12 14:20:35,903 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 14:20:36,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:20:36,167 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:20:36,525 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:20:38,109 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:20:39,657 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:20:41,092 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:20:41,092 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 599 [2020-10-12 14:20:41,093 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-12 14:20:41,093 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5025 [2020-10-12 14:20:41,093 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:20:41,093 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 14:20:41,093 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 527 [2020-10-12 14:20:41,093 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 71 [2020-10-12 14:20:41,094 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 14:20:41,267 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 14:20:41,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:20:41,270 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:20:41,272 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:20:41,272 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 14:20:41,273 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 14:20:41,273 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 14:20:41,273 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:20:41,274 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 14:20:41,274 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 14:20:41,274 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 14:20:41,274 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 14:20:41,306 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-12 14:20:41,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:20:41,326 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:20:41,519 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:20:41,520 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 275 [2020-10-12 14:20:41,520 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 14:20:41,520 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 196 [2020-10-12 14:20:41,521 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:20:41,521 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 14:20:41,521 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 14:20:41,521 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 14:20:41,521 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 14:20:41,621 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-12 14:20:41,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:20:41,629 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:20:41,661 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:20:41,661 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 112 [2020-10-12 14:20:41,661 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 14:20:41,661 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 32 [2020-10-12 14:20:41,662 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:20:41,662 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 14:20:41,662 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 14:20:41,662 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 14:20:41,662 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 14:20:41,691 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 393 [2020-10-12 14:20:41,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:20:41,740 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:20:41,868 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:20:41,868 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 129 [2020-10-12 14:20:41,868 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 14:20:41,868 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 147 [2020-10-12 14:20:41,869 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:20:41,869 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 14:20:41,869 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 14:20:41,869 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 123 [2020-10-12 14:20:41,869 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 14:20:42,129 INFO L134 CoverageAnalysis]: Checked inductivity of 545 backedges. 198 proven. 3 refuted. 0 times theorem prover too weak. 344 trivial. 0 not checked. [2020-10-12 14:20:42,129 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2066154471] [2020-10-12 14:20:42,130 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 14:20:42,130 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-12 14:20:42,130 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [622085756] [2020-10-12 14:20:42,131 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-12 14:20:42,131 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 14:20:42,131 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-12 14:20:42,132 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-12 14:20:42,132 INFO L87 Difference]: Start difference. First operand 10670 states and 13857 transitions. Second operand 5 states. [2020-10-12 14:20:54,007 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 14:20:54,007 INFO L93 Difference]: Finished difference Result 23220 states and 30786 transitions. [2020-10-12 14:20:54,011 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-12 14:20:54,011 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 585 [2020-10-12 14:20:54,013 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 14:20:54,057 INFO L225 Difference]: With dead ends: 23220 [2020-10-12 14:20:54,057 INFO L226 Difference]: Without dead ends: 13172 [2020-10-12 14:20:54,080 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-12 14:20:54,096 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13172 states. [2020-10-12 14:20:54,312 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13172 to 12859. [2020-10-12 14:20:54,313 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12859 states. [2020-10-12 14:20:54,337 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12859 states to 12859 states and 16428 transitions. [2020-10-12 14:20:54,338 INFO L78 Accepts]: Start accepts. Automaton has 12859 states and 16428 transitions. Word has length 585 [2020-10-12 14:20:54,339 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 14:20:54,339 INFO L479 AbstractCegarLoop]: Abstraction has 12859 states and 16428 transitions. [2020-10-12 14:20:54,339 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-12 14:20:54,339 INFO L276 IsEmpty]: Start isEmpty. Operand 12859 states and 16428 transitions. [2020-10-12 14:20:54,353 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 604 [2020-10-12 14:20:54,354 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 14:20:54,355 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 14:20:54,356 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-12 14:20:54,356 INFO L427 AbstractCegarLoop]: === Iteration 12 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 14:20:54,356 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 14:20:54,356 INFO L82 PathProgramCache]: Analyzing trace with hash 1303027846, now seen corresponding path program 1 times [2020-10-12 14:20:54,356 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 14:20:54,357 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [132282802] [2020-10-12 14:20:54,357 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 14:20:54,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:20:54,631 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:20:55,038 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:20:56,782 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:20:57,760 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:20:59,533 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:20:59,533 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 617 [2020-10-12 14:20:59,533 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-12 14:20:59,533 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5015 [2020-10-12 14:20:59,534 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:20:59,534 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 14:20:59,534 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 284 [2020-10-12 14:20:59,534 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 114 [2020-10-12 14:20:59,534 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 14:20:59,671 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 14:20:59,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:20:59,674 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:20:59,676 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:20:59,676 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 14:20:59,676 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 14:20:59,676 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 14:20:59,677 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:20:59,677 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 14:20:59,677 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 14:20:59,677 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 14:20:59,677 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 14:20:59,698 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-12 14:20:59,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:20:59,788 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:20:59,922 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:20:59,922 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 275 [2020-10-12 14:20:59,922 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 14:20:59,922 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 167 [2020-10-12 14:20:59,922 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:20:59,923 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 14:20:59,923 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 14:20:59,923 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 269 [2020-10-12 14:20:59,923 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 14:21:00,012 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-12 14:21:00,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:21:00,037 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:21:00,133 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:21:00,133 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 112 [2020-10-12 14:21:00,133 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 14:21:00,133 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 105 [2020-10-12 14:21:00,133 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:21:00,133 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 14:21:00,133 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 14:21:00,134 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 112 [2020-10-12 14:21:00,134 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 14:21:00,387 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 393 [2020-10-12 14:21:00,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:21:00,457 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:21:00,526 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:21:00,526 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 147 [2020-10-12 14:21:00,526 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 14:21:00,526 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 96 [2020-10-12 14:21:00,527 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:21:00,527 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 14:21:00,527 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 144 [2020-10-12 14:21:00,527 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 14:21:00,527 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 14:21:01,126 INFO L134 CoverageAnalysis]: Checked inductivity of 563 backedges. 307 proven. 110 refuted. 0 times theorem prover too weak. 146 trivial. 0 not checked. [2020-10-12 14:21:01,127 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [132282802] [2020-10-12 14:21:01,127 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 14:21:01,127 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-12 14:21:01,127 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1914776954] [2020-10-12 14:21:01,128 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-12 14:21:01,128 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 14:21:01,128 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-12 14:21:01,129 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2020-10-12 14:21:01,129 INFO L87 Difference]: Start difference. First operand 12859 states and 16428 transitions. Second operand 8 states. [2020-10-12 14:21:21,737 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 14:21:21,737 INFO L93 Difference]: Finished difference Result 28331 states and 36953 transitions. [2020-10-12 14:21:21,741 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-12 14:21:21,741 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 603 [2020-10-12 14:21:21,742 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 14:21:21,793 INFO L225 Difference]: With dead ends: 28331 [2020-10-12 14:21:21,794 INFO L226 Difference]: Without dead ends: 16094 [2020-10-12 14:21:21,825 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=58, Invalid=124, Unknown=0, NotChecked=0, Total=182 [2020-10-12 14:21:21,845 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16094 states. [2020-10-12 14:21:22,183 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16094 to 15730. [2020-10-12 14:21:22,183 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15730 states. [2020-10-12 14:21:22,227 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15730 states to 15730 states and 20060 transitions. [2020-10-12 14:21:22,228 INFO L78 Accepts]: Start accepts. Automaton has 15730 states and 20060 transitions. Word has length 603 [2020-10-12 14:21:22,229 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 14:21:22,230 INFO L479 AbstractCegarLoop]: Abstraction has 15730 states and 20060 transitions. [2020-10-12 14:21:22,230 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-12 14:21:22,230 INFO L276 IsEmpty]: Start isEmpty. Operand 15730 states and 20060 transitions. [2020-10-12 14:21:22,257 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 616 [2020-10-12 14:21:22,257 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 14:21:22,258 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 14:21:22,258 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-12 14:21:22,258 INFO L427 AbstractCegarLoop]: === Iteration 13 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 14:21:22,259 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 14:21:22,259 INFO L82 PathProgramCache]: Analyzing trace with hash 950468926, now seen corresponding path program 1 times [2020-10-12 14:21:22,260 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 14:21:22,260 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [591789057] [2020-10-12 14:21:22,260 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 14:21:22,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:21:22,579 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:21:23,055 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:21:23,467 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:21:25,155 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:21:25,156 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 629 [2020-10-12 14:21:25,156 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-12 14:21:25,156 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2692 [2020-10-12 14:21:25,156 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:21:25,156 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 14:21:25,156 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 409 [2020-10-12 14:21:25,156 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 149 [2020-10-12 14:21:25,156 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 14:21:25,261 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 14:21:25,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:21:25,264 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:21:25,265 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:21:25,265 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 14:21:25,265 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 14:21:25,265 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 14:21:25,266 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:21:25,266 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 14:21:25,266 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 14:21:25,266 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 14:21:25,266 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 14:21:25,294 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-12 14:21:25,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:21:25,309 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:21:25,369 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:21:25,369 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 287 [2020-10-12 14:21:25,369 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 14:21:25,369 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 61 [2020-10-12 14:21:25,369 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:21:25,370 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 14:21:25,370 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 14:21:25,370 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 14:21:25,370 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 14:21:25,439 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 294 [2020-10-12 14:21:25,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:21:25,465 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:21:25,520 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:21:25,520 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 112 [2020-10-12 14:21:25,520 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 14:21:25,520 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 65 [2020-10-12 14:21:25,521 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:21:25,521 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 14:21:25,521 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 14:21:25,521 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 106 [2020-10-12 14:21:25,521 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 14:21:25,542 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 405 [2020-10-12 14:21:25,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:21:25,584 FATAL L256 erpolLogProxyWrapper]: Now shrinking...