/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/Problem18_label04.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-12 14:54:03,486 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-12 14:54:03,489 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-12 14:54:03,531 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-12 14:54:03,531 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-12 14:54:03,539 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-12 14:54:03,542 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-12 14:54:03,545 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-12 14:54:03,548 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-12 14:54:03,552 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-12 14:54:03,553 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-12 14:54:03,554 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-12 14:54:03,554 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-12 14:54:03,557 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-12 14:54:03,560 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-12 14:54:03,563 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-12 14:54:03,564 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-12 14:54:03,565 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-12 14:54:03,567 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-12 14:54:03,574 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-12 14:54:03,577 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-12 14:54:03,578 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-12 14:54:03,579 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-12 14:54:03,580 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-12 14:54:03,592 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-12 14:54:03,592 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-12 14:54:03,593 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-12 14:54:03,594 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-12 14:54:03,596 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-12 14:54:03,597 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-12 14:54:03,597 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-12 14:54:03,598 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-12 14:54:03,599 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-12 14:54:03,600 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-12 14:54:03,600 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-12 14:54:03,601 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-12 14:54:03,601 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-12 14:54:03,602 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-12 14:54:03,602 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-12 14:54:03,603 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-12 14:54:03,603 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-12 14:54:03,604 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 14:54:03,626 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-12 14:54:03,627 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-12 14:54:03,628 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-12 14:54:03,628 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-12 14:54:03,629 INFO L138 SettingsManager]: * Use SBE=true [2020-10-12 14:54:03,629 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-12 14:54:03,629 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-12 14:54:03,629 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-12 14:54:03,629 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-12 14:54:03,630 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-12 14:54:03,630 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-12 14:54:03,630 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-12 14:54:03,630 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-12 14:54:03,630 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-12 14:54:03,631 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-12 14:54:03,631 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-12 14:54:03,631 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-12 14:54:03,631 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-12 14:54:03,631 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-12 14:54:03,632 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-12 14:54:03,632 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-12 14:54:03,632 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-12 14:54:03,632 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-12 14:54:03,632 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-12 14:54:03,633 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-12 14:54:03,633 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-12 14:54:03,633 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-12 14:54:03,633 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-12 14:54:03,633 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-12 14:54:03,634 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 14:54:03,952 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-12 14:54:03,978 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-12 14:54:03,983 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-12 14:54:03,986 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-12 14:54:03,987 INFO L275 PluginConnector]: CDTParser initialized [2020-10-12 14:54:03,988 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem18_label04.c [2020-10-12 14:54:04,078 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/510da2a27/38e2a4b15db243078f66d07705ce9b79/FLAGd30e93b62 [2020-10-12 14:54:04,852 INFO L306 CDTParser]: Found 1 translation units. [2020-10-12 14:54:04,853 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem18_label04.c [2020-10-12 14:54:04,881 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/510da2a27/38e2a4b15db243078f66d07705ce9b79/FLAGd30e93b62 [2020-10-12 14:54:04,930 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/510da2a27/38e2a4b15db243078f66d07705ce9b79 [2020-10-12 14:54:04,943 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-12 14:54:04,946 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-12 14:54:04,955 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-12 14:54:04,955 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-12 14:54:04,960 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-12 14:54:04,961 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.10 02:54:04" (1/1) ... [2020-10-12 14:54:04,967 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@77dd261d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 02:54:04, skipping insertion in model container [2020-10-12 14:54:04,967 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.10 02:54:04" (1/1) ... [2020-10-12 14:54:04,979 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-12 14:54:05,120 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-12 14:54:06,838 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-12 14:54:06,850 INFO L203 MainTranslator]: Completed pre-run [2020-10-12 14:54:07,482 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-12 14:54:07,524 INFO L208 MainTranslator]: Completed translation [2020-10-12 14:54:07,526 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 02:54:07 WrapperNode [2020-10-12 14:54:07,527 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-12 14:54:07,528 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-12 14:54:07,529 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-12 14:54:07,529 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-12 14:54:07,549 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 02:54:07" (1/1) ... [2020-10-12 14:54:07,551 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 02:54:07" (1/1) ... [2020-10-12 14:54:07,628 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 02:54:07" (1/1) ... [2020-10-12 14:54:07,629 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 02:54:07" (1/1) ... [2020-10-12 14:54:07,765 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 02:54:07" (1/1) ... [2020-10-12 14:54:07,797 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 02:54:07" (1/1) ... [2020-10-12 14:54:07,822 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 02:54:07" (1/1) ... [2020-10-12 14:54:07,852 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-12 14:54:07,853 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-12 14:54:07,854 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-12 14:54:07,854 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-12 14:54:07,855 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 02:54:07" (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 14:54:07,925 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-12 14:54:07,926 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-12 14:54:07,926 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-10-12 14:54:07,926 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2020-10-12 14:54:07,927 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2020-10-12 14:54:07,927 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-12 14:54:07,927 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-10-12 14:54:07,928 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2020-10-12 14:54:07,928 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2020-10-12 14:54:07,928 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-12 14:54:07,928 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-12 14:54:07,929 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-12 14:54:07,929 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-12 14:54:07,929 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-12 14:54:07,929 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-12 14:54:14,451 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-12 14:54:14,452 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-12 14:54:14,465 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.10 02:54:14 BoogieIcfgContainer [2020-10-12 14:54:14,466 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-12 14:54:14,470 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-12 14:54:14,470 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-12 14:54:14,474 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-12 14:54:14,474 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.10 02:54:04" (1/3) ... [2020-10-12 14:54:14,475 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@43591af9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.10 02:54:14, skipping insertion in model container [2020-10-12 14:54:14,475 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 02:54:07" (2/3) ... [2020-10-12 14:54:14,476 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@43591af9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.10 02:54:14, skipping insertion in model container [2020-10-12 14:54:14,476 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.10 02:54:14" (3/3) ... [2020-10-12 14:54:14,478 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem18_label04.c [2020-10-12 14:54:14,491 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-12 14:54:14,502 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-12 14:54:14,519 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-12 14:54:14,553 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-12 14:54:14,554 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-12 14:54:14,554 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-12 14:54:14,554 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-12 14:54:14,554 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-12 14:54:14,554 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-12 14:54:14,555 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-12 14:54:14,555 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-12 14:54:14,598 INFO L276 IsEmpty]: Start isEmpty. Operand 774 states. [2020-10-12 14:54:14,612 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2020-10-12 14:54:14,612 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 14:54:14,614 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 14:54:14,614 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 14:54:14,622 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 14:54:14,623 INFO L82 PathProgramCache]: Analyzing trace with hash -636143767, now seen corresponding path program 1 times [2020-10-12 14:54:14,633 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 14:54:14,634 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [880261708] [2020-10-12 14:54:14,634 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 14:54:14,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:54:14,874 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:54:15,289 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:54:15,289 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 66 [2020-10-12 14:54:15,289 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 14:54:15,290 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 471 [2020-10-12 14:54:15,291 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:54:15,292 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-12 14:54:15,292 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-12 14:54:15,293 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 60 [2020-10-12 14:54:15,294 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-12 14:54:15,448 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 14:54:15,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:54:15,455 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:54:15,462 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:54:15,463 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 14:54:15,463 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 14:54:15,463 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-12 14:54:15,464 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:54:15,464 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 14:54:15,464 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 14:54:15,464 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-12 14:54:15,465 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 14:54:15,492 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 14:54:15,493 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [880261708] [2020-10-12 14:54:15,495 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 14:54:15,496 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-12 14:54:15,497 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [797394850] [2020-10-12 14:54:15,504 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-12 14:54:15,504 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 14:54:15,521 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-12 14:54:15,522 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-12 14:54:15,524 INFO L87 Difference]: Start difference. First operand 774 states. Second operand 5 states. [2020-10-12 14:54:27,014 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 14:54:27,015 INFO L93 Difference]: Finished difference Result 2270 states and 4349 transitions. [2020-10-12 14:54:27,022 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-12 14:54:27,024 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 58 [2020-10-12 14:54:27,027 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 14:54:27,069 INFO L225 Difference]: With dead ends: 2270 [2020-10-12 14:54:27,069 INFO L226 Difference]: Without dead ends: 1432 [2020-10-12 14:54:27,079 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-12 14:54:27,103 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1432 states. [2020-10-12 14:54:27,231 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1432 to 1425. [2020-10-12 14:54:27,233 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1425 states. [2020-10-12 14:54:27,242 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1425 states to 1425 states and 2643 transitions. [2020-10-12 14:54:27,245 INFO L78 Accepts]: Start accepts. Automaton has 1425 states and 2643 transitions. Word has length 58 [2020-10-12 14:54:27,247 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 14:54:27,248 INFO L479 AbstractCegarLoop]: Abstraction has 1425 states and 2643 transitions. [2020-10-12 14:54:27,248 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-12 14:54:27,248 INFO L276 IsEmpty]: Start isEmpty. Operand 1425 states and 2643 transitions. [2020-10-12 14:54:27,263 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2020-10-12 14:54:27,263 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 14:54:27,264 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, 1, 1, 1, 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 14:54:27,264 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-12 14:54:27,265 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 14:54:27,265 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 14:54:27,265 INFO L82 PathProgramCache]: Analyzing trace with hash 81688133, now seen corresponding path program 1 times [2020-10-12 14:54:27,265 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 14:54:27,266 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [596746851] [2020-10-12 14:54:27,266 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 14:54:27,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:54:27,335 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:54:27,609 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:54:28,285 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:54:28,286 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 137 [2020-10-12 14:54:28,286 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 14:54:28,286 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 974 [2020-10-12 14:54:28,288 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:54:28,289 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-12 14:54:28,289 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-12 14:54:28,289 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 75 [2020-10-12 14:54:28,289 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-12 14:54:28,376 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 14:54:28,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:54:28,383 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:54:28,390 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:54:28,391 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 14:54:28,391 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 14:54:28,391 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-12 14:54:28,391 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:54:28,392 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 14:54:28,392 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 14:54:28,392 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-12 14:54:28,392 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 14:54:28,409 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-12 14:54:28,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:54:28,433 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:54:28,539 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:54:28,539 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 70 [2020-10-12 14:54:28,540 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 14:54:28,540 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 115 [2020-10-12 14:54:28,540 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:54:28,540 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 14:54:28,541 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 14:54:28,541 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 70 [2020-10-12 14:54:28,541 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 14:54:28,614 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 51 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 14:54:28,614 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [596746851] [2020-10-12 14:54:28,615 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 14:54:28,615 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-12 14:54:28,615 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1516137303] [2020-10-12 14:54:28,618 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-12 14:54:28,618 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 14:54:28,618 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-12 14:54:28,619 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-12 14:54:28,619 INFO L87 Difference]: Start difference. First operand 1425 states and 2643 transitions. Second operand 7 states. [2020-10-12 14:54:39,853 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 14:54:39,853 INFO L93 Difference]: Finished difference Result 4355 states and 8096 transitions. [2020-10-12 14:54:39,854 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-12 14:54:39,854 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 127 [2020-10-12 14:54:39,855 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 14:54:39,876 INFO L225 Difference]: With dead ends: 4355 [2020-10-12 14:54:39,876 INFO L226 Difference]: Without dead ends: 2936 [2020-10-12 14:54:39,882 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-12 14:54:39,887 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2936 states. [2020-10-12 14:54:39,988 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2936 to 2877. [2020-10-12 14:54:39,988 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2877 states. [2020-10-12 14:54:40,001 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2877 states to 2877 states and 4346 transitions. [2020-10-12 14:54:40,002 INFO L78 Accepts]: Start accepts. Automaton has 2877 states and 4346 transitions. Word has length 127 [2020-10-12 14:54:40,002 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 14:54:40,002 INFO L479 AbstractCegarLoop]: Abstraction has 2877 states and 4346 transitions. [2020-10-12 14:54:40,003 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-12 14:54:40,003 INFO L276 IsEmpty]: Start isEmpty. Operand 2877 states and 4346 transitions. [2020-10-12 14:54:40,005 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2020-10-12 14:54:40,006 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 14:54:40,006 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, 1, 1, 1, 1, 1, 1, 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 14:54:40,007 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-12 14:54:40,007 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 14:54:40,007 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 14:54:40,007 INFO L82 PathProgramCache]: Analyzing trace with hash 1605240704, now seen corresponding path program 1 times [2020-10-12 14:54:40,008 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 14:54:40,008 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [976573923] [2020-10-12 14:54:40,008 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 14:54:40,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:54:40,059 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:54:40,247 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:54:40,775 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:54:40,775 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 140 [2020-10-12 14:54:40,775 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 14:54:40,775 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 737 [2020-10-12 14:54:40,776 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:54:40,776 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-12 14:54:40,776 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-12 14:54:40,776 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 78 [2020-10-12 14:54:40,776 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 14:54:40,861 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 14:54:40,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:54:40,868 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:54:40,875 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:54:40,876 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 14:54:40,876 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 14:54:40,876 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-12 14:54:40,877 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:54:40,877 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 14:54:40,877 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 14:54:40,877 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-12 14:54:40,878 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 14:54:40,902 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-12 14:54:40,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:54:40,941 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:54:41,053 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:54:41,054 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 73 [2020-10-12 14:54:41,054 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 14:54:41,054 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 124 [2020-10-12 14:54:41,054 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:54:41,055 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 14:54:41,055 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 14:54:41,055 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 73 [2020-10-12 14:54:41,055 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 14:54:41,262 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 51 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 14:54:41,263 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [976573923] [2020-10-12 14:54:41,264 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 14:54:41,264 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-12 14:54:41,264 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2065103054] [2020-10-12 14:54:41,267 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-12 14:54:41,270 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 14:54:41,270 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-12 14:54:41,273 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-12 14:54:41,275 INFO L87 Difference]: Start difference. First operand 2877 states and 4346 transitions. Second operand 7 states. [2020-10-12 14:54:52,338 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 14:54:52,339 INFO L93 Difference]: Finished difference Result 8767 states and 13390 transitions. [2020-10-12 14:54:52,339 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-12 14:54:52,340 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 130 [2020-10-12 14:54:52,340 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 14:54:52,380 INFO L225 Difference]: With dead ends: 8767 [2020-10-12 14:54:52,380 INFO L226 Difference]: Without dead ends: 5896 [2020-10-12 14:54:52,389 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2020-10-12 14:54:52,398 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5896 states. [2020-10-12 14:54:52,564 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5896 to 5072. [2020-10-12 14:54:52,564 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5072 states. [2020-10-12 14:54:52,590 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5072 states to 5072 states and 7057 transitions. [2020-10-12 14:54:52,591 INFO L78 Accepts]: Start accepts. Automaton has 5072 states and 7057 transitions. Word has length 130 [2020-10-12 14:54:52,593 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 14:54:52,594 INFO L479 AbstractCegarLoop]: Abstraction has 5072 states and 7057 transitions. [2020-10-12 14:54:52,594 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-12 14:54:52,594 INFO L276 IsEmpty]: Start isEmpty. Operand 5072 states and 7057 transitions. [2020-10-12 14:54:52,597 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 156 [2020-10-12 14:54:52,597 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 14:54:52,597 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 14:54:52,598 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-12 14:54:52,598 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 14:54:52,598 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 14:54:52,598 INFO L82 PathProgramCache]: Analyzing trace with hash 2122052941, now seen corresponding path program 1 times [2020-10-12 14:54:52,599 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 14:54:52,599 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [392306463] [2020-10-12 14:54:52,600 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 14:54:52,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:54:52,698 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:54:53,121 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:54:53,122 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 165 [2020-10-12 14:54:53,122 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 14:54:53,122 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 456 [2020-10-12 14:54:53,122 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:54:53,123 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-12 14:54:53,123 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-12 14:54:53,123 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 103 [2020-10-12 14:54:53,123 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 14:54:53,211 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 14:54:53,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:54:53,217 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:54:53,223 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:54:53,223 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 14:54:53,227 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 14:54:53,227 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-12 14:54:53,227 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:54:53,228 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 14:54:53,228 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 14:54:53,228 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-12 14:54:53,228 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 14:54:53,254 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-12 14:54:53,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:54:53,291 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:54:53,477 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:54:53,478 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 98 [2020-10-12 14:54:53,478 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 14:54:53,478 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 201 [2020-10-12 14:54:53,478 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:54:53,479 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 14:54:53,479 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 14:54:53,479 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 98 [2020-10-12 14:54:53,479 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 14:54:53,731 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 51 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 14:54:53,733 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [392306463] [2020-10-12 14:54:53,734 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 14:54:53,734 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-12 14:54:53,734 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [891943292] [2020-10-12 14:54:53,736 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-12 14:54:53,737 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 14:54:53,737 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-12 14:54:53,738 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-12 14:54:53,738 INFO L87 Difference]: Start difference. First operand 5072 states and 7057 transitions. Second operand 7 states. [2020-10-12 14:55:08,841 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 14:55:08,842 INFO L93 Difference]: Finished difference Result 14752 states and 21063 transitions. [2020-10-12 14:55:08,843 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-12 14:55:08,843 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 155 [2020-10-12 14:55:08,843 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 14:55:08,889 INFO L225 Difference]: With dead ends: 14752 [2020-10-12 14:55:08,889 INFO L226 Difference]: Without dead ends: 9686 [2020-10-12 14:55:08,902 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2020-10-12 14:55:08,914 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9686 states. [2020-10-12 14:55:09,123 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9686 to 8104. [2020-10-12 14:55:09,124 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8104 states. [2020-10-12 14:55:09,147 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8104 states to 8104 states and 10771 transitions. [2020-10-12 14:55:09,147 INFO L78 Accepts]: Start accepts. Automaton has 8104 states and 10771 transitions. Word has length 155 [2020-10-12 14:55:09,149 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 14:55:09,149 INFO L479 AbstractCegarLoop]: Abstraction has 8104 states and 10771 transitions. [2020-10-12 14:55:09,149 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-12 14:55:09,149 INFO L276 IsEmpty]: Start isEmpty. Operand 8104 states and 10771 transitions. [2020-10-12 14:55:09,159 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 463 [2020-10-12 14:55:09,160 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 14:55:09,161 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 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 14:55:09,161 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-12 14:55:09,162 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 14:55:09,162 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 14:55:09,162 INFO L82 PathProgramCache]: Analyzing trace with hash 1626670911, now seen corresponding path program 1 times [2020-10-12 14:55:09,163 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 14:55:09,163 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [763018315] [2020-10-12 14:55:09,163 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 14:55:09,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:55:09,378 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:55:09,545 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:55:13,479 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:55:13,480 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 476 [2020-10-12 14:55:13,480 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 14:55:13,480 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4187 [2020-10-12 14:55:13,480 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:55:13,481 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-12 14:55:13,481 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-12 14:55:13,481 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 312 [2020-10-12 14:55:13,481 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 14:55:13,620 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 14:55:13,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:55:13,625 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:55:13,632 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:55:13,633 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 14:55:13,633 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 14:55:13,633 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-12 14:55:13,633 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:55:13,634 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 14:55:13,634 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 14:55:13,634 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-12 14:55:13,634 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 14:55:13,670 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-12 14:55:13,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:55:13,782 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:55:14,545 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:55:14,546 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 310 [2020-10-12 14:55:14,546 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 14:55:14,547 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 815 [2020-10-12 14:55:14,547 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:55:14,547 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-12 14:55:14,547 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 14:55:14,547 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 310 [2020-10-12 14:55:14,548 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 14:55:14,799 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-12 14:55:14,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:55:14,831 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:55:14,920 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:55:14,920 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-12 14:55:14,921 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 14:55:14,921 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 100 [2020-10-12 14:55:14,921 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:55:14,921 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-12 14:55:14,921 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 14:55:14,922 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-10-12 14:55:14,922 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 14:55:15,092 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 315 [2020-10-12 14:55:15,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:55:15,133 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:55:15,176 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:55:15,176 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 98 [2020-10-12 14:55:15,176 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 14:55:15,176 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 56 [2020-10-12 14:55:15,180 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:55:15,180 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 14:55:15,180 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 95 [2020-10-12 14:55:15,180 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 14:55:15,180 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 14:55:15,571 INFO L134 CoverageAnalysis]: Checked inductivity of 199 backedges. 102 proven. 92 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-10-12 14:55:15,571 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [763018315] [2020-10-12 14:55:15,572 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 14:55:15,572 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-12 14:55:15,572 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1512909289] [2020-10-12 14:55:15,573 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-12 14:55:15,574 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 14:55:15,574 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-12 14:55:15,574 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2020-10-12 14:55:15,574 INFO L87 Difference]: Start difference. First operand 8104 states and 10771 transitions. Second operand 8 states. [2020-10-12 14:55:29,103 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 14:55:29,105 INFO L93 Difference]: Finished difference Result 21060 states and 29794 transitions. [2020-10-12 14:55:29,106 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-10-12 14:55:29,106 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 462 [2020-10-12 14:55:29,108 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 14:55:29,171 INFO L225 Difference]: With dead ends: 21060 [2020-10-12 14:55:29,171 INFO L226 Difference]: Without dead ends: 12962 [2020-10-12 14:55:29,196 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 1 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 14:55:29,215 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12962 states. [2020-10-12 14:55:29,533 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12962 to 12676. [2020-10-12 14:55:29,533 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12676 states. [2020-10-12 14:55:29,557 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12676 states to 12676 states and 16390 transitions. [2020-10-12 14:55:29,559 INFO L78 Accepts]: Start accepts. Automaton has 12676 states and 16390 transitions. Word has length 462 [2020-10-12 14:55:29,560 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 14:55:29,560 INFO L479 AbstractCegarLoop]: Abstraction has 12676 states and 16390 transitions. [2020-10-12 14:55:29,560 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-12 14:55:29,560 INFO L276 IsEmpty]: Start isEmpty. Operand 12676 states and 16390 transitions. [2020-10-12 14:55:29,583 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 649 [2020-10-12 14:55:29,583 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 14:55:29,584 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-12 14:55:29,585 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-12 14:55:29,585 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 14:55:29,585 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 14:55:29,586 INFO L82 PathProgramCache]: Analyzing trace with hash -1385223918, now seen corresponding path program 1 times [2020-10-12 14:55:29,586 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 14:55:29,587 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1430370758] [2020-10-12 14:55:29,587 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 14:55:29,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:55:29,704 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:55:29,831 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:55:31,522 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:55:34,505 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:55:34,711 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:55:34,711 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 664 [2020-10-12 14:55:34,711 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-12 14:55:34,711 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5041 [2020-10-12 14:55:34,711 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:55:34,712 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-12 14:55:34,712 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 196 [2020-10-12 14:55:34,712 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 411 [2020-10-12 14:55:34,712 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 14:55:34,885 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 14:55:34,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:55:34,888 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:55:34,890 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:55:34,890 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 14:55:34,890 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 14:55:34,891 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 14:55:34,891 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:55:34,891 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 14:55:34,891 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 14:55:34,891 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 14:55:34,892 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 14:55:34,909 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-12 14:55:34,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:55:34,959 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:55:35,063 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:55:35,063 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 187 [2020-10-12 14:55:35,064 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 14:55:35,064 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 125 [2020-10-12 14:55:35,064 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:55:35,064 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 14:55:35,065 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 14:55:35,065 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 181 [2020-10-12 14:55:35,065 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 14:55:35,141 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 194 [2020-10-12 14:55:35,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:55:35,241 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:55:35,568 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:55:36,266 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:55:36,266 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 310 [2020-10-12 14:55:36,267 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 14:55:36,267 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1064 [2020-10-12 14:55:36,268 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:55:36,268 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-12 14:55:36,268 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 14:55:36,269 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 310 [2020-10-12 14:55:36,269 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 14:55:36,527 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-12 14:55:36,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:55:36,539 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:55:36,610 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:55:36,610 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-12 14:55:36,610 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 14:55:36,611 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 74 [2020-10-12 14:55:36,611 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:55:36,612 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-12 14:55:36,612 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 14:55:36,612 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-10-12 14:55:36,613 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 14:55:36,941 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 501 [2020-10-12 14:55:36,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:55:36,978 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:55:37,091 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:55:37,091 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 98 [2020-10-12 14:55:37,091 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 14:55:37,091 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 124 [2020-10-12 14:55:37,092 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:55:37,092 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 14:55:37,092 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 14:55:37,093 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 98 [2020-10-12 14:55:37,093 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 14:55:38,071 INFO L134 CoverageAnalysis]: Checked inductivity of 533 backedges. 520 proven. 10 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-10-12 14:55:38,072 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1430370758] [2020-10-12 14:55:38,073 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 14:55:38,073 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-10-12 14:55:38,074 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1990057500] [2020-10-12 14:55:38,075 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-12 14:55:38,075 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 14:55:38,075 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-12 14:55:38,075 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2020-10-12 14:55:38,076 INFO L87 Difference]: Start difference. First operand 12676 states and 16390 transitions. Second operand 10 states. [2020-10-12 14:55:59,454 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 14:55:59,455 INFO L93 Difference]: Finished difference Result 41241 states and 55506 transitions. [2020-10-12 14:55:59,456 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-10-12 14:55:59,456 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 648 [2020-10-12 14:55:59,457 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 14:55:59,549 INFO L225 Difference]: With dead ends: 41241 [2020-10-12 14:55:59,549 INFO L226 Difference]: Without dead ends: 24067 [2020-10-12 14:55:59,612 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 14 SyntacticMatches, 2 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 86 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=116, Invalid=346, Unknown=0, NotChecked=0, Total=462 [2020-10-12 14:55:59,655 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24067 states. [2020-10-12 14:56:01,058 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24067 to 22564. [2020-10-12 14:56:01,058 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22564 states. [2020-10-12 14:56:01,102 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22564 states to 22564 states and 26875 transitions. [2020-10-12 14:56:01,105 INFO L78 Accepts]: Start accepts. Automaton has 22564 states and 26875 transitions. Word has length 648 [2020-10-12 14:56:01,106 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 14:56:01,106 INFO L479 AbstractCegarLoop]: Abstraction has 22564 states and 26875 transitions. [2020-10-12 14:56:01,106 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-12 14:56:01,106 INFO L276 IsEmpty]: Start isEmpty. Operand 22564 states and 26875 transitions. [2020-10-12 14:56:01,169 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 990 [2020-10-12 14:56:01,170 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 14:56:01,171 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 14:56:01,171 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-12 14:56:01,171 INFO L427 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 14:56:01,172 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 14:56:01,172 INFO L82 PathProgramCache]: Analyzing trace with hash 1659817079, now seen corresponding path program 1 times [2020-10-12 14:56:01,172 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 14:56:01,173 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1969600322] [2020-10-12 14:56:01,173 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 14:56:01,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:56:01,578 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:56:02,838 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:56:02,839 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1009 [2020-10-12 14:56:02,839 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 14:56:02,839 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1403 [2020-10-12 14:56:02,839 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:56:02,840 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 14:56:02,840 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 849 [2020-10-12 14:56:02,840 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 103 [2020-10-12 14:56:02,840 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 14:56:03,044 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 14:56:03,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:56:03,046 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:56:03,048 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:56:03,048 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 14:56:03,048 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 14:56:03,048 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 14:56:03,049 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:56:03,049 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 14:56:03,049 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 14:56:03,049 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 14:56:03,049 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 14:56:03,069 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-12 14:56:03,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:56:03,112 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:56:03,247 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:56:03,247 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 532 [2020-10-12 14:56:03,247 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 14:56:03,247 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 139 [2020-10-12 14:56:03,248 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:56:03,248 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 14:56:03,248 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 14:56:03,249 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 14:56:03,250 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 14:56:03,351 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-12 14:56:03,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:56:03,365 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:56:03,444 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:56:03,445 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 244 [2020-10-12 14:56:03,445 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 14:56:03,445 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 81 [2020-10-12 14:56:03,445 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:56:03,445 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 14:56:03,446 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 14:56:03,446 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 14:56:03,446 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 14:56:03,558 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 221 [2020-10-12 14:56:03,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:56:03,560 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:56:03,566 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:56:03,566 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-10-12 14:56:03,566 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 14:56:03,567 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-12 14:56:03,567 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:56:03,567 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 14:56:03,567 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 14:56:03,567 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 14:56:03,568 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 14:56:04,159 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 535 [2020-10-12 14:56:04,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:56:04,286 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:56:04,534 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:56:04,534 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 310 [2020-10-12 14:56:04,534 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 14:56:04,535 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 301 [2020-10-12 14:56:04,535 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:56:04,535 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 14:56:04,536 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 14:56:04,536 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 301 [2020-10-12 14:56:04,536 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 14:56:04,642 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-12 14:56:04,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:56:04,652 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:56:04,676 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:56:04,676 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-12 14:56:04,676 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 14:56:04,677 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 27 [2020-10-12 14:56:04,677 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:56:04,677 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 14:56:04,677 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 14:56:04,677 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-12 14:56:04,678 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 14:56:04,741 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 842 [2020-10-12 14:56:04,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:56:04,769 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:56:04,870 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:56:04,871 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 98 [2020-10-12 14:56:04,871 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 14:56:04,871 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 113 [2020-10-12 14:56:04,871 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:56:04,872 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 14:56:04,872 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 14:56:04,872 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 98 [2020-10-12 14:56:04,873 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 14:56:05,772 INFO L134 CoverageAnalysis]: Checked inductivity of 654 backedges. 349 proven. 2 refuted. 0 times theorem prover too weak. 303 trivial. 0 not checked. [2020-10-12 14:56:05,772 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1969600322] [2020-10-12 14:56:05,773 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 14:56:05,773 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-12 14:56:05,774 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1802825417] [2020-10-12 14:56:05,776 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-12 14:56:05,776 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 14:56:05,777 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-12 14:56:05,777 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-12 14:56:05,777 INFO L87 Difference]: Start difference. First operand 22564 states and 26875 transitions. Second operand 7 states. [2020-10-12 14:56:20,221 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 14:56:20,222 INFO L93 Difference]: Finished difference Result 52572 states and 64013 transitions. [2020-10-12 14:56:20,223 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-12 14:56:20,223 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 989 [2020-10-12 14:56:20,225 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 14:56:20,327 INFO L225 Difference]: With dead ends: 52572 [2020-10-12 14:56:20,327 INFO L226 Difference]: Without dead ends: 30716 [2020-10-12 14:56:20,381 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-12 14:56:20,420 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30716 states. [2020-10-12 14:56:20,919 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30716 to 28536. [2020-10-12 14:56:20,919 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28536 states. [2020-10-12 14:56:20,979 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28536 states to 28536 states and 34196 transitions. [2020-10-12 14:56:20,980 INFO L78 Accepts]: Start accepts. Automaton has 28536 states and 34196 transitions. Word has length 989 [2020-10-12 14:56:20,983 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 14:56:20,983 INFO L479 AbstractCegarLoop]: Abstraction has 28536 states and 34196 transitions. [2020-10-12 14:56:20,983 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-12 14:56:20,983 INFO L276 IsEmpty]: Start isEmpty. Operand 28536 states and 34196 transitions. [2020-10-12 14:56:20,998 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 997 [2020-10-12 14:56:20,998 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 14:56:21,001 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 14:56:21,001 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-12 14:56:21,001 INFO L427 AbstractCegarLoop]: === Iteration 8 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 14:56:21,002 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 14:56:21,002 INFO L82 PathProgramCache]: Analyzing trace with hash 1295809681, now seen corresponding path program 1 times [2020-10-12 14:56:21,002 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 14:56:21,003 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1233850312] [2020-10-12 14:56:21,003 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 14:56:21,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:56:21,367 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:56:22,689 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:56:22,689 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1016 [2020-10-12 14:56:22,689 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 14:56:22,690 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1474 [2020-10-12 14:56:22,690 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:56:22,690 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 14:56:22,690 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 856 [2020-10-12 14:56:22,690 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 103 [2020-10-12 14:56:22,691 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 14:56:22,891 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 14:56:22,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:56:22,893 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:56:22,896 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:56:22,896 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 14:56:22,897 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 14:56:22,897 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-12 14:56:22,897 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:56:22,898 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 14:56:22,898 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 14:56:22,898 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 14:56:22,899 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 14:56:22,926 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-12 14:56:22,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:56:22,985 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:56:23,163 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:56:23,165 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 532 [2020-10-12 14:56:23,165 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 14:56:23,165 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 185 [2020-10-12 14:56:23,166 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:56:23,166 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 14:56:23,166 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 14:56:23,167 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 14:56:23,167 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 14:56:23,322 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-12 14:56:23,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:56:23,345 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:56:23,455 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:56:23,456 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 244 [2020-10-12 14:56:23,456 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 14:56:23,456 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 112 [2020-10-12 14:56:23,456 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:56:23,457 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 14:56:23,457 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 14:56:23,457 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 14:56:23,457 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 14:56:23,538 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 221 [2020-10-12 14:56:23,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:56:23,542 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:56:23,549 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:56:23,550 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-10-12 14:56:23,550 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 14:56:23,550 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-12 14:56:23,551 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:56:23,551 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 14:56:23,552 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 14:56:23,552 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 14:56:23,552 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 14:56:23,911 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 535 [2020-10-12 14:56:23,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:56:24,042 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:56:24,285 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:56:24,286 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 317 [2020-10-12 14:56:24,286 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 14:56:24,286 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 295 [2020-10-12 14:56:24,286 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:56:24,287 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 14:56:24,287 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 14:56:24,287 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 308 [2020-10-12 14:56:24,287 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 14:56:24,378 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-12 14:56:24,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:56:24,392 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:56:24,422 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:56:24,422 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 29 [2020-10-12 14:56:24,422 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 14:56:24,422 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 35 [2020-10-12 14:56:24,423 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:56:24,423 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 14:56:24,423 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 14:56:24,423 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-10-12 14:56:24,423 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 14:56:24,486 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 849 [2020-10-12 14:56:24,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:56:24,514 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:56:24,803 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:56:24,804 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 98 [2020-10-12 14:56:24,804 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 14:56:24,804 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 299 [2020-10-12 14:56:24,804 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:56:24,804 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 14:56:24,805 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 14:56:24,805 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 98 [2020-10-12 14:56:24,805 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 14:56:25,843 INFO L134 CoverageAnalysis]: Checked inductivity of 661 backedges. 349 proven. 2 refuted. 0 times theorem prover too weak. 310 trivial. 0 not checked. [2020-10-12 14:56:25,844 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1233850312] [2020-10-12 14:56:25,844 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 14:56:25,844 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-12 14:56:25,844 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [900581597] [2020-10-12 14:56:25,846 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-12 14:56:25,846 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 14:56:25,846 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-12 14:56:25,846 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-12 14:56:25,847 INFO L87 Difference]: Start difference. First operand 28536 states and 34196 transitions. Second operand 7 states. [2020-10-12 14:56:43,196 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 14:56:43,197 INFO L93 Difference]: Finished difference Result 70148 states and 86171 transitions. [2020-10-12 14:56:43,198 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-12 14:56:43,198 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 996 [2020-10-12 14:56:43,200 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 14:56:43,308 INFO L225 Difference]: With dead ends: 70148 [2020-10-12 14:56:43,309 INFO L226 Difference]: Without dead ends: 42320 [2020-10-12 14:56:43,343 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-12 14:56:43,387 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42320 states. [2020-10-12 14:56:43,953 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42320 to 40085. [2020-10-12 14:56:43,954 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 40085 states. [2020-10-12 14:56:44,035 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40085 states to 40085 states and 47075 transitions. [2020-10-12 14:56:44,036 INFO L78 Accepts]: Start accepts. Automaton has 40085 states and 47075 transitions. Word has length 996 [2020-10-12 14:56:44,041 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 14:56:44,041 INFO L479 AbstractCegarLoop]: Abstraction has 40085 states and 47075 transitions. [2020-10-12 14:56:44,041 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-12 14:56:44,042 INFO L276 IsEmpty]: Start isEmpty. Operand 40085 states and 47075 transitions. [2020-10-12 14:56:44,060 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1011 [2020-10-12 14:56:44,060 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 14:56:44,062 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 14:56:44,063 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-12 14:56:44,063 INFO L427 AbstractCegarLoop]: === Iteration 9 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 14:56:44,063 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 14:56:44,064 INFO L82 PathProgramCache]: Analyzing trace with hash 583935514, now seen corresponding path program 1 times [2020-10-12 14:56:44,064 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 14:56:44,064 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1362425685] [2020-10-12 14:56:44,065 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 14:56:44,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:56:44,399 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:56:45,343 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:56:45,344 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1030 [2020-10-12 14:56:45,344 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 14:56:45,344 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1039 [2020-10-12 14:56:45,344 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:56:45,344 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 14:56:45,345 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 849 [2020-10-12 14:56:45,345 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 124 [2020-10-12 14:56:45,345 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 14:56:45,529 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 14:56:45,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:56:45,531 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:56:45,534 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:56:45,534 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 14:56:45,534 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 14:56:45,534 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 14:56:45,534 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:56:45,535 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 14:56:45,535 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 14:56:45,535 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 14:56:45,535 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 14:56:45,557 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-12 14:56:45,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:56:45,593 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:56:45,740 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:56:45,741 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 532 [2020-10-12 14:56:45,741 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 14:56:45,742 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 151 [2020-10-12 14:56:45,742 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:56:45,742 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 14:56:45,743 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 14:56:45,743 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 14:56:45,743 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 14:56:45,881 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-12 14:56:45,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:56:45,899 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:56:46,012 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:56:46,013 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 244 [2020-10-12 14:56:46,013 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 14:56:46,014 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 115 [2020-10-12 14:56:46,014 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:56:46,014 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 14:56:46,015 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 14:56:46,015 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 14:56:46,015 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 14:56:46,091 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 221 [2020-10-12 14:56:46,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:56:46,097 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:56:46,104 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:56:46,104 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-10-12 14:56:46,105 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 14:56:46,105 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-12 14:56:46,106 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:56:46,106 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 14:56:46,106 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 14:56:46,107 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 14:56:46,107 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 14:56:46,817 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 535 [2020-10-12 14:56:46,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:56:46,926 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:56:47,120 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:56:47,120 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 310 [2020-10-12 14:56:47,121 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 14:56:47,121 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 232 [2020-10-12 14:56:47,121 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:56:47,121 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 14:56:47,122 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 14:56:47,122 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 301 [2020-10-12 14:56:47,122 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 14:56:47,190 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-12 14:56:47,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:56:47,201 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:56:47,225 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:56:47,225 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-12 14:56:47,225 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 14:56:47,225 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 27 [2020-10-12 14:56:47,226 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:56:47,226 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 14:56:47,226 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 14:56:47,226 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-12 14:56:47,226 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 14:56:47,288 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 842 [2020-10-12 14:56:47,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:56:47,323 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:56:47,481 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:56:47,481 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 119 [2020-10-12 14:56:47,482 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 14:56:47,482 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 170 [2020-10-12 14:56:47,482 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:56:47,483 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 14:56:47,483 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 14:56:47,483 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 119 [2020-10-12 14:56:47,484 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 14:56:49,208 INFO L134 CoverageAnalysis]: Checked inductivity of 696 backedges. 391 proven. 2 refuted. 0 times theorem prover too weak. 303 trivial. 0 not checked. [2020-10-12 14:56:49,218 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1362425685] [2020-10-12 14:56:49,219 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 14:56:49,219 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-12 14:56:49,219 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1112997705] [2020-10-12 14:56:49,228 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-12 14:56:49,229 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 14:56:49,229 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-12 14:56:49,229 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-12 14:56:49,230 INFO L87 Difference]: Start difference. First operand 40085 states and 47075 transitions. Second operand 7 states. [2020-10-12 14:57:00,876 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 14:57:00,876 INFO L93 Difference]: Finished difference Result 92956 states and 111640 transitions. [2020-10-12 14:57:00,879 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-12 14:57:00,879 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 1010 [2020-10-12 14:57:00,882 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 14:57:01,076 INFO L225 Difference]: With dead ends: 92956 [2020-10-12 14:57:01,076 INFO L226 Difference]: Without dead ends: 53579 [2020-10-12 14:57:01,164 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2020-10-12 14:57:01,245 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53579 states. [2020-10-12 14:57:02,061 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53579 to 52093. [2020-10-12 14:57:02,061 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 52093 states. [2020-10-12 14:57:02,155 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52093 states to 52093 states and 61642 transitions. [2020-10-12 14:57:02,156 INFO L78 Accepts]: Start accepts. Automaton has 52093 states and 61642 transitions. Word has length 1010 [2020-10-12 14:57:02,158 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 14:57:02,158 INFO L479 AbstractCegarLoop]: Abstraction has 52093 states and 61642 transitions. [2020-10-12 14:57:02,158 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-12 14:57:02,158 INFO L276 IsEmpty]: Start isEmpty. Operand 52093 states and 61642 transitions. [2020-10-12 14:57:02,178 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1091 [2020-10-12 14:57:02,178 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 14:57:02,179 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 14:57:02,179 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-12 14:57:02,179 INFO L427 AbstractCegarLoop]: === Iteration 10 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 14:57:02,180 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 14:57:02,180 INFO L82 PathProgramCache]: Analyzing trace with hash -511449478, now seen corresponding path program 1 times [2020-10-12 14:57:02,180 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 14:57:02,181 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [260759968] [2020-10-12 14:57:02,181 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 14:57:02,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:57:03,834 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:57:04,038 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:57:08,842 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:57:08,843 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1110 [2020-10-12 14:57:08,843 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 14:57:08,843 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5127 [2020-10-12 14:57:08,844 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:57:08,844 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 14:57:08,844 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 849 [2020-10-12 14:57:08,845 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 204 [2020-10-12 14:57:08,845 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 14:57:09,134 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 14:57:09,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:57:09,138 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:57:09,142 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:57:09,143 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 14:57:09,143 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 14:57:09,143 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-12 14:57:09,144 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:57:09,144 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 14:57:09,144 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 14:57:09,145 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 14:57:09,145 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 14:57:09,177 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-12 14:57:09,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:57:09,238 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:57:09,516 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:57:09,517 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 532 [2020-10-12 14:57:09,517 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 14:57:09,517 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 285 [2020-10-12 14:57:09,518 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:57:09,518 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 14:57:09,518 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 14:57:09,519 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 14:57:09,519 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 14:57:09,657 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-12 14:57:09,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:57:09,680 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:57:09,760 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:57:09,760 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 244 [2020-10-12 14:57:09,760 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 14:57:09,761 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 83 [2020-10-12 14:57:09,761 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:57:09,761 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 14:57:09,761 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 14:57:09,762 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 14:57:09,762 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 14:57:09,828 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 221 [2020-10-12 14:57:09,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:57:09,831 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:57:09,837 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:57:09,837 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-10-12 14:57:09,838 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 14:57:09,838 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-12 14:57:09,838 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:57:09,838 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 14:57:09,839 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 14:57:09,839 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 14:57:09,839 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 14:57:10,065 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 535 [2020-10-12 14:57:10,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:57:10,164 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:57:10,413 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:57:10,413 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 310 [2020-10-12 14:57:10,414 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 14:57:10,414 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 289 [2020-10-12 14:57:10,414 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:57:10,414 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 14:57:10,415 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 14:57:10,415 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 301 [2020-10-12 14:57:10,415 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 14:57:10,509 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-12 14:57:10,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:57:10,521 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:57:10,552 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:57:10,553 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-12 14:57:10,553 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 14:57:10,553 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 35 [2020-10-12 14:57:10,553 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:57:10,554 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 14:57:10,554 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 14:57:10,554 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-12 14:57:10,554 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 14:57:10,626 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 842 [2020-10-12 14:57:10,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:57:10,720 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:57:10,957 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:57:10,958 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 199 [2020-10-12 14:57:10,958 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 14:57:10,958 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 273 [2020-10-12 14:57:10,958 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:57:10,958 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 14:57:10,958 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 14:57:10,958 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 199 [2020-10-12 14:57:10,959 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 14:57:11,777 INFO L134 CoverageAnalysis]: Checked inductivity of 856 backedges. 551 proven. 2 refuted. 0 times theorem prover too weak. 303 trivial. 0 not checked. [2020-10-12 14:57:11,777 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [260759968] [2020-10-12 14:57:11,778 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 14:57:11,778 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-12 14:57:11,778 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1038658197] [2020-10-12 14:57:11,780 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-12 14:57:11,780 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 14:57:11,780 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-12 14:57:11,780 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-12 14:57:11,781 INFO L87 Difference]: Start difference. First operand 52093 states and 61642 transitions. Second operand 7 states. [2020-10-12 14:57:28,310 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 14:57:28,310 INFO L93 Difference]: Finished difference Result 124731 states and 148392 transitions. [2020-10-12 14:57:28,311 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-12 14:57:28,311 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 1090 [2020-10-12 14:57:28,315 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 14:57:28,613 INFO L225 Difference]: With dead ends: 124731 [2020-10-12 14:57:28,613 INFO L226 Difference]: Without dead ends: 73346 [2020-10-12 14:57:28,731 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-12 14:57:29,126 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 73346 states. [2020-10-12 14:57:30,235 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 73346 to 69778. [2020-10-12 14:57:30,236 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 69778 states. [2020-10-12 14:57:30,441 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69778 states to 69778 states and 81497 transitions. [2020-10-12 14:57:30,442 INFO L78 Accepts]: Start accepts. Automaton has 69778 states and 81497 transitions. Word has length 1090 [2020-10-12 14:57:30,443 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 14:57:30,443 INFO L479 AbstractCegarLoop]: Abstraction has 69778 states and 81497 transitions. [2020-10-12 14:57:30,444 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-12 14:57:30,444 INFO L276 IsEmpty]: Start isEmpty. Operand 69778 states and 81497 transitions. [2020-10-12 14:57:30,468 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1133 [2020-10-12 14:57:30,469 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 14:57:30,470 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, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 14:57:30,471 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-12 14:57:30,471 INFO L427 AbstractCegarLoop]: === Iteration 11 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 14:57:30,472 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 14:57:30,472 INFO L82 PathProgramCache]: Analyzing trace with hash -1733598533, now seen corresponding path program 1 times [2020-10-12 14:57:30,473 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 14:57:30,473 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [515560115] [2020-10-12 14:57:30,474 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 14:57:30,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:57:30,990 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:57:32,227 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:57:32,227 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1154 [2020-10-12 14:57:32,227 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 14:57:32,227 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1398 [2020-10-12 14:57:32,228 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:57:32,228 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 14:57:32,228 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 997 [2020-10-12 14:57:32,228 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 100 [2020-10-12 14:57:32,228 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 14:57:32,531 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 14:57:32,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:57:32,534 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:57:32,537 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:57:32,538 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 14:57:32,538 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 14:57:32,538 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-12 14:57:32,539 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:57:32,539 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 14:57:32,539 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 14:57:32,540 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 14:57:32,540 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 14:57:32,568 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-12 14:57:32,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:57:32,631 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:57:32,824 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:57:32,824 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 532 [2020-10-12 14:57:32,825 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 14:57:32,825 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 200 [2020-10-12 14:57:32,826 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:57:32,826 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 14:57:32,826 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 14:57:32,827 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 14:57:32,827 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 14:57:32,970 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-12 14:57:32,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:57:32,988 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:57:33,053 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:57:33,054 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 244 [2020-10-12 14:57:33,054 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 14:57:33,054 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 67 [2020-10-12 14:57:33,054 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:57:33,055 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 14:57:33,055 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 14:57:33,055 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 14:57:33,055 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 14:57:33,116 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 221 [2020-10-12 14:57:33,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:57:33,119 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:57:33,124 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:57:33,124 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-10-12 14:57:33,125 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 14:57:33,125 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-12 14:57:33,125 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:57:33,125 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 14:57:33,125 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 14:57:33,126 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 14:57:33,126 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 14:57:33,276 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 535 [2020-10-12 14:57:33,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:57:33,288 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:57:33,335 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:57:33,336 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 310 [2020-10-12 14:57:33,336 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 14:57:33,336 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 48 [2020-10-12 14:57:33,336 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:57:33,336 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 14:57:33,336 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 14:57:33,336 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 14:57:33,336 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 14:57:33,379 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-12 14:57:33,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:57:33,381 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:57:33,395 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:57:33,395 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-12 14:57:33,395 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 14:57:33,395 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-12 14:57:33,396 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:57:33,396 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 14:57:33,396 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 14:57:33,396 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 14:57:33,396 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 14:57:33,447 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 842 [2020-10-12 14:57:33,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:57:33,489 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:57:33,592 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:57:33,593 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 144 [2020-10-12 14:57:33,593 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 14:57:33,593 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 118 [2020-10-12 14:57:33,594 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:57:33,594 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 14:57:33,594 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 14:57:33,595 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 138 [2020-10-12 14:57:33,595 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 14:57:33,670 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 985 [2020-10-12 14:57:33,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:57:33,709 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:57:33,831 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:57:33,831 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 98 [2020-10-12 14:57:33,831 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 14:57:33,832 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 136 [2020-10-12 14:57:33,832 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:57:33,832 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 14:57:33,832 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 14:57:33,833 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 98 [2020-10-12 14:57:33,833 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 14:57:34,707 INFO L134 CoverageAnalysis]: Checked inductivity of 1088 backedges. 496 proven. 2 refuted. 0 times theorem prover too weak. 590 trivial. 0 not checked. [2020-10-12 14:57:34,708 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [515560115] [2020-10-12 14:57:34,708 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 14:57:34,708 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-12 14:57:34,709 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [775523336] [2020-10-12 14:57:34,710 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-12 14:57:34,710 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 14:57:34,710 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-12 14:57:34,711 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-12 14:57:34,711 INFO L87 Difference]: Start difference. First operand 69778 states and 81497 transitions. Second operand 7 states.