/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.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=DEEPEST --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 language data_model -i ../../../trunk/examples/svcomp/array-examples/standard_palindrome_ground.i -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-27 14:30:08,734 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-27 14:30:08,739 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-27 14:30:08,803 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-27 14:30:08,804 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-27 14:30:08,812 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-27 14:30:08,815 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-27 14:30:08,820 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-27 14:30:08,823 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-27 14:30:08,831 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-27 14:30:08,833 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-27 14:30:08,834 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-27 14:30:08,835 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-27 14:30:08,838 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-27 14:30:08,840 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-27 14:30:08,842 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-27 14:30:08,843 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-27 14:30:08,848 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-27 14:30:08,858 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-27 14:30:08,860 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-27 14:30:08,861 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-27 14:30:08,863 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-27 14:30:08,864 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-27 14:30:08,865 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-27 14:30:08,868 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-27 14:30:08,868 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-27 14:30:08,869 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-27 14:30:08,870 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-27 14:30:08,870 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-27 14:30:08,871 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-27 14:30:08,872 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-27 14:30:08,873 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-27 14:30:08,874 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-27 14:30:08,874 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-27 14:30:08,875 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-27 14:30:08,876 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-27 14:30:08,877 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-27 14:30:08,877 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-27 14:30:08,877 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-27 14:30:08,878 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-27 14:30:08,879 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-27 14:30:08,884 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 [2020-10-27 14:30:08,910 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-27 14:30:08,911 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-27 14:30:08,912 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-27 14:30:08,912 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-27 14:30:08,912 INFO L138 SettingsManager]: * Use SBE=true [2020-10-27 14:30:08,913 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-27 14:30:08,913 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-27 14:30:08,913 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-27 14:30:08,913 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-27 14:30:08,914 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-27 14:30:08,914 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-27 14:30:08,914 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-27 14:30:08,914 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-27 14:30:08,914 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-27 14:30:08,915 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-27 14:30:08,915 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-27 14:30:08,915 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-27 14:30:08,915 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-27 14:30:08,915 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-27 14:30:08,916 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-27 14:30:08,916 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-27 14:30:08,916 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-27 14:30:08,916 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-27 14:30:08,917 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-27 14:30:08,917 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-27 14:30:08,917 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-27 14:30:08,917 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-27 14:30:08,917 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-27 14:30:08,918 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-27 14:30:08,918 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=DEEPEST;log-additional-information=true;unknown-allowed=true; [2020-10-27 14:30:09,331 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-27 14:30:09,383 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-27 14:30:09,387 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-27 14:30:09,388 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-27 14:30:09,389 INFO L275 PluginConnector]: CDTParser initialized [2020-10-27 14:30:09,390 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/array-examples/standard_palindrome_ground.i [2020-10-27 14:30:09,481 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/1baa74950/b7bcc54154d849e6a50c2caa2f8923d1/FLAG7dfc42223 [2020-10-27 14:30:10,076 INFO L306 CDTParser]: Found 1 translation units. [2020-10-27 14:30:10,076 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/array-examples/standard_palindrome_ground.i [2020-10-27 14:30:10,084 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/1baa74950/b7bcc54154d849e6a50c2caa2f8923d1/FLAG7dfc42223 [2020-10-27 14:30:10,431 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/1baa74950/b7bcc54154d849e6a50c2caa2f8923d1 [2020-10-27 14:30:10,439 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-27 14:30:10,445 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-27 14:30:10,447 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-27 14:30:10,448 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-27 14:30:10,452 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-27 14:30:10,453 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 02:30:10" (1/1) ... [2020-10-27 14:30:10,457 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@69f3b34f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 02:30:10, skipping insertion in model container [2020-10-27 14:30:10,457 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 02:30:10" (1/1) ... [2020-10-27 14:30:10,466 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-27 14:30:10,482 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-27 14:30:10,650 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-27 14:30:10,659 INFO L203 MainTranslator]: Completed pre-run [2020-10-27 14:30:10,681 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-27 14:30:10,699 INFO L208 MainTranslator]: Completed translation [2020-10-27 14:30:10,699 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 02:30:10 WrapperNode [2020-10-27 14:30:10,700 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-27 14:30:10,701 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-27 14:30:10,701 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-27 14:30:10,701 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-27 14:30:10,718 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 02:30:10" (1/1) ... [2020-10-27 14:30:10,718 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 02:30:10" (1/1) ... [2020-10-27 14:30:10,727 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 02:30:10" (1/1) ... [2020-10-27 14:30:10,728 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 02:30:10" (1/1) ... [2020-10-27 14:30:10,736 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 02:30:10" (1/1) ... [2020-10-27 14:30:10,741 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 02:30:10" (1/1) ... [2020-10-27 14:30:10,743 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 02:30:10" (1/1) ... [2020-10-27 14:30:10,746 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-27 14:30:10,747 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-27 14:30:10,747 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-27 14:30:10,747 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-27 14:30:10,748 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 02:30:10" (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 [2020-10-27 14:30:10,833 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-27 14:30:10,833 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-27 14:30:10,833 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-27 14:30:10,833 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-10-27 14:30:10,834 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-27 14:30:10,834 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-27 14:30:10,834 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-27 14:30:10,834 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_perror_fail [2020-10-27 14:30:10,834 INFO L130 BoogieDeclarations]: Found specification of procedure __assert [2020-10-27 14:30:10,834 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-27 14:30:10,835 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-27 14:30:10,835 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-10-27 14:30:10,835 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-27 14:30:10,835 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-27 14:30:10,835 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-27 14:30:10,836 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-27 14:30:10,836 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-27 14:30:10,836 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-27 14:30:10,836 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-27 14:30:10,836 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-27 14:30:11,180 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-27 14:30:11,181 INFO L298 CfgBuilder]: Removed 3 assume(true) statements. [2020-10-27 14:30:11,183 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 02:30:11 BoogieIcfgContainer [2020-10-27 14:30:11,183 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-27 14:30:11,185 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-27 14:30:11,186 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-27 14:30:11,189 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-27 14:30:11,190 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.10 02:30:10" (1/3) ... [2020-10-27 14:30:11,191 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@26eb32f7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 02:30:11, skipping insertion in model container [2020-10-27 14:30:11,191 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 02:30:10" (2/3) ... [2020-10-27 14:30:11,192 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@26eb32f7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 02:30:11, skipping insertion in model container [2020-10-27 14:30:11,192 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 02:30:11" (3/3) ... [2020-10-27 14:30:11,194 INFO L111 eAbstractionObserver]: Analyzing ICFG standard_palindrome_ground.i [2020-10-27 14:30:11,208 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-27 14:30:11,215 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-27 14:30:11,232 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-27 14:30:11,330 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-27 14:30:11,330 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-27 14:30:11,330 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-27 14:30:11,331 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-27 14:30:11,331 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-27 14:30:11,331 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-27 14:30:11,331 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-27 14:30:11,331 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-27 14:30:11,352 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states. [2020-10-27 14:30:11,359 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-10-27 14:30:11,359 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 14:30:11,360 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 14:30:11,361 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 14:30:11,368 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 14:30:11,369 INFO L82 PathProgramCache]: Analyzing trace with hash -1906025394, now seen corresponding path program 1 times [2020-10-27 14:30:11,381 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 14:30:11,382 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1083928744] [2020-10-27 14:30:11,382 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 14:30:11,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:30:11,641 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:30:11,709 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:30:11,856 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:30:11,856 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-10-27 14:30:11,856 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 14:30:11,856 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 273 [2020-10-27 14:30:11,859 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:30:11,860 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:30:11,860 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-10-27 14:30:11,860 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:30:11,860 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-27 14:30:11,964 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 14:30:11,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:30:11,970 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:30:11,979 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:30:11,979 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 14:30:11,979 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:30:11,980 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-27 14:30:11,980 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:30:11,980 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:30:11,980 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:30:11,981 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:30:11,981 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-27 14:30:11,992 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 14:30:11,993 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1083928744] [2020-10-27 14:30:11,995 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 14:30:11,995 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-27 14:30:11,996 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1983204771] [2020-10-27 14:30:12,001 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-27 14:30:12,002 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 14:30:12,016 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-27 14:30:12,017 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-27 14:30:12,019 INFO L87 Difference]: Start difference. First operand 32 states. Second operand 3 states. [2020-10-27 14:30:12,141 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 14:30:12,142 INFO L93 Difference]: Finished difference Result 53 states and 67 transitions. [2020-10-27 14:30:12,143 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-27 14:30:12,144 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 17 [2020-10-27 14:30:12,145 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 14:30:12,152 INFO L225 Difference]: With dead ends: 53 [2020-10-27 14:30:12,153 INFO L226 Difference]: Without dead ends: 24 [2020-10-27 14:30:12,156 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-27 14:30:12,176 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states. [2020-10-27 14:30:12,196 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 24. [2020-10-27 14:30:12,198 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2020-10-27 14:30:12,199 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 26 transitions. [2020-10-27 14:30:12,201 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 26 transitions. Word has length 17 [2020-10-27 14:30:12,201 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 14:30:12,201 INFO L481 AbstractCegarLoop]: Abstraction has 24 states and 26 transitions. [2020-10-27 14:30:12,202 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-27 14:30:12,202 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 26 transitions. [2020-10-27 14:30:12,203 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-10-27 14:30:12,203 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 14:30:12,203 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 14:30:12,203 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-27 14:30:12,204 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 14:30:12,204 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 14:30:12,204 INFO L82 PathProgramCache]: Analyzing trace with hash -1754426942, now seen corresponding path program 1 times [2020-10-27 14:30:12,205 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 14:30:12,205 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [634145880] [2020-10-27 14:30:12,205 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 14:30:12,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:30:12,228 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:30:12,249 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:30:12,368 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:30:12,368 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-10-27 14:30:12,368 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 14:30:12,369 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 147 [2020-10-27 14:30:12,369 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:30:12,369 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 14:30:12,369 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-10-27 14:30:12,369 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-27 14:30:12,370 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:30:12,418 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 14:30:12,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:30:12,426 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:30:12,445 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:30:12,448 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 14:30:12,448 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:30:12,449 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-10-27 14:30:12,451 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:30:12,451 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:30:12,451 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:30:12,451 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:30:12,452 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-27 14:30:12,462 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 14:30:12,462 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [634145880] [2020-10-27 14:30:12,463 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 14:30:12,463 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-27 14:30:12,463 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1797425938] [2020-10-27 14:30:12,468 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-27 14:30:12,468 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 14:30:12,475 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-27 14:30:12,475 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-27 14:30:12,476 INFO L87 Difference]: Start difference. First operand 24 states and 26 transitions. Second operand 4 states. [2020-10-27 14:30:12,587 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 14:30:12,587 INFO L93 Difference]: Finished difference Result 44 states and 49 transitions. [2020-10-27 14:30:12,588 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-27 14:30:12,588 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 17 [2020-10-27 14:30:12,589 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 14:30:12,590 INFO L225 Difference]: With dead ends: 44 [2020-10-27 14:30:12,590 INFO L226 Difference]: Without dead ends: 28 [2020-10-27 14:30:12,591 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-27 14:30:12,592 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2020-10-27 14:30:12,599 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 26. [2020-10-27 14:30:12,599 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2020-10-27 14:30:12,601 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 28 transitions. [2020-10-27 14:30:12,601 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 28 transitions. Word has length 17 [2020-10-27 14:30:12,601 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 14:30:12,601 INFO L481 AbstractCegarLoop]: Abstraction has 26 states and 28 transitions. [2020-10-27 14:30:12,601 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-27 14:30:12,602 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 28 transitions. [2020-10-27 14:30:12,602 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-10-27 14:30:12,603 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 14:30:12,603 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] [2020-10-27 14:30:12,603 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-27 14:30:12,603 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 14:30:12,604 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 14:30:12,604 INFO L82 PathProgramCache]: Analyzing trace with hash -999640386, now seen corresponding path program 1 times [2020-10-27 14:30:12,605 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 14:30:12,605 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [137572305] [2020-10-27 14:30:12,605 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 14:30:12,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:30:12,650 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:30:12,691 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:30:12,832 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:30:13,570 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:30:13,571 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 31 [2020-10-27 14:30:13,571 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-27 14:30:13,571 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 938 [2020-10-27 14:30:13,571 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:30:13,571 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-27 14:30:13,572 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-27 14:30:13,572 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-10-27 14:30:13,572 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:30:13,612 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 14:30:13,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:30:13,616 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:30:13,621 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:30:13,622 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 14:30:13,622 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:30:13,622 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-27 14:30:13,622 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:30:13,622 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:30:13,623 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:30:13,623 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:30:13,623 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:30:13,627 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-27 14:30:13,628 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [137572305] [2020-10-27 14:30:13,628 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 14:30:13,628 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-27 14:30:13,629 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [598484376] [2020-10-27 14:30:13,629 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-27 14:30:13,629 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 14:30:13,630 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-27 14:30:13,631 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-27 14:30:13,631 INFO L87 Difference]: Start difference. First operand 26 states and 28 transitions. Second operand 5 states. [2020-10-27 14:30:13,754 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 14:30:13,755 INFO L93 Difference]: Finished difference Result 49 states and 54 transitions. [2020-10-27 14:30:13,755 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-27 14:30:13,755 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 21 [2020-10-27 14:30:13,756 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 14:30:13,757 INFO L225 Difference]: With dead ends: 49 [2020-10-27 14:30:13,757 INFO L226 Difference]: Without dead ends: 32 [2020-10-27 14:30:13,758 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-27 14:30:13,758 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2020-10-27 14:30:13,765 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 30. [2020-10-27 14:30:13,765 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2020-10-27 14:30:13,767 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 32 transitions. [2020-10-27 14:30:13,767 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 32 transitions. Word has length 21 [2020-10-27 14:30:13,767 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 14:30:13,767 INFO L481 AbstractCegarLoop]: Abstraction has 30 states and 32 transitions. [2020-10-27 14:30:13,767 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-27 14:30:13,768 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 32 transitions. [2020-10-27 14:30:13,768 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-10-27 14:30:13,769 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 14:30:13,769 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 14:30:13,769 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-27 14:30:13,769 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 14:30:13,770 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 14:30:13,770 INFO L82 PathProgramCache]: Analyzing trace with hash -1354504774, now seen corresponding path program 2 times [2020-10-27 14:30:13,770 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 14:30:13,771 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1673545680] [2020-10-27 14:30:13,771 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 14:30:13,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:30:13,791 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:30:13,805 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:30:13,850 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:30:15,614 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:30:15,615 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 35 [2020-10-27 14:30:15,615 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-27 14:30:15,616 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1829 [2020-10-27 14:30:15,617 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:30:15,617 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-27 14:30:15,617 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 17 [2020-10-27 14:30:15,618 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-10-27 14:30:15,618 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-27 14:30:15,806 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 14:30:15,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:30:15,809 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:30:15,818 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:30:15,818 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 14:30:15,819 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:30:15,819 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-27 14:30:15,822 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:30:15,822 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:30:15,823 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:30:15,823 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:30:15,823 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:30:15,833 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-10-27 14:30:15,836 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1673545680] [2020-10-27 14:30:15,837 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 14:30:15,837 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-10-27 14:30:15,837 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [450479441] [2020-10-27 14:30:15,838 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-27 14:30:15,838 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 14:30:15,841 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-27 14:30:15,842 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2020-10-27 14:30:15,842 INFO L87 Difference]: Start difference. First operand 30 states and 32 transitions. Second operand 9 states. [2020-10-27 14:30:16,234 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 14:30:16,234 INFO L93 Difference]: Finished difference Result 42 states and 44 transitions. [2020-10-27 14:30:16,235 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-27 14:30:16,235 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 25 [2020-10-27 14:30:16,238 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 14:30:16,239 INFO L225 Difference]: With dead ends: 42 [2020-10-27 14:30:16,239 INFO L226 Difference]: Without dead ends: 38 [2020-10-27 14:30:16,241 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=44, Invalid=166, Unknown=0, NotChecked=0, Total=210 [2020-10-27 14:30:16,241 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2020-10-27 14:30:16,252 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 36. [2020-10-27 14:30:16,253 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2020-10-27 14:30:16,257 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 38 transitions. [2020-10-27 14:30:16,257 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 38 transitions. Word has length 25 [2020-10-27 14:30:16,258 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 14:30:16,258 INFO L481 AbstractCegarLoop]: Abstraction has 36 states and 38 transitions. [2020-10-27 14:30:16,258 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-27 14:30:16,258 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 38 transitions. [2020-10-27 14:30:16,261 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2020-10-27 14:30:16,261 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 14:30:16,262 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-10-27 14:30:16,262 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-27 14:30:16,262 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 14:30:16,263 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 14:30:16,263 INFO L82 PathProgramCache]: Analyzing trace with hash -1553956332, now seen corresponding path program 1 times [2020-10-27 14:30:16,263 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 14:30:16,264 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1010185971] [2020-10-27 14:30:16,264 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 14:30:16,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:30:16,288 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:30:16,308 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:30:16,381 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:30:17,634 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:30:17,634 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 45 [2020-10-27 14:30:17,634 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-27 14:30:17,635 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1353 [2020-10-27 14:30:17,635 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:30:17,635 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 14:30:17,635 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 17 [2020-10-27 14:30:17,635 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 14:30:17,636 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:30:17,686 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 14:30:17,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:30:17,694 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:30:17,697 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:30:17,698 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 14:30:17,698 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:30:17,699 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 14:30:17,699 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:30:17,700 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:30:17,700 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:30:17,700 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:30:17,700 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:30:17,704 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-10-27 14:30:17,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:30:17,706 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:30:17,707 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:30:17,708 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:30:17,708 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:30:17,708 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 14:30:17,708 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:30:17,708 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:30:17,709 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-27 14:30:17,709 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:30:17,709 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:30:17,714 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 2 proven. 4 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-10-27 14:30:17,715 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1010185971] [2020-10-27 14:30:17,715 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 14:30:17,715 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-27 14:30:17,715 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2022526719] [2020-10-27 14:30:17,717 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-27 14:30:17,717 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 14:30:17,718 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-27 14:30:17,719 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-10-27 14:30:17,719 INFO L87 Difference]: Start difference. First operand 36 states and 38 transitions. Second operand 6 states. [2020-10-27 14:30:17,856 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 14:30:17,856 INFO L93 Difference]: Finished difference Result 67 states and 72 transitions. [2020-10-27 14:30:17,857 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-27 14:30:17,857 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 33 [2020-10-27 14:30:17,857 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 14:30:17,861 INFO L225 Difference]: With dead ends: 67 [2020-10-27 14:30:17,861 INFO L226 Difference]: Without dead ends: 42 [2020-10-27 14:30:17,862 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-10-27 14:30:17,862 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2020-10-27 14:30:17,872 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 40. [2020-10-27 14:30:17,872 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 40 states. [2020-10-27 14:30:17,873 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 42 transitions. [2020-10-27 14:30:17,874 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 42 transitions. Word has length 33 [2020-10-27 14:30:17,874 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 14:30:17,874 INFO L481 AbstractCegarLoop]: Abstraction has 40 states and 42 transitions. [2020-10-27 14:30:17,874 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-27 14:30:17,874 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 42 transitions. [2020-10-27 14:30:17,875 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2020-10-27 14:30:17,875 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 14:30:17,876 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 14:30:17,876 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-27 14:30:17,876 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 14:30:17,876 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 14:30:17,877 INFO L82 PathProgramCache]: Analyzing trace with hash -1927673072, now seen corresponding path program 2 times [2020-10-27 14:30:17,877 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 14:30:17,877 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2035853839] [2020-10-27 14:30:17,877 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 14:30:17,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:30:17,901 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:30:17,918 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:30:18,037 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:30:21,716 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:30:21,717 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 49 [2020-10-27 14:30:21,717 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-27 14:30:21,717 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3823 [2020-10-27 14:30:21,717 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:30:21,717 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-27 14:30:21,718 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-10-27 14:30:21,718 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 25 [2020-10-27 14:30:21,718 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:30:21,870 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 14:30:21,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:30:21,877 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:30:21,882 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:30:21,882 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 14:30:21,883 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:30:21,883 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-27 14:30:21,883 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:30:21,884 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:30:21,884 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:30:21,884 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:30:21,885 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-27 14:30:21,893 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-10-27 14:30:21,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:30:21,899 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:30:21,903 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:30:21,903 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:30:21,903 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:30:21,903 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-27 14:30:21,904 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:30:21,904 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 14:30:21,904 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:30:21,904 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 14:30:21,904 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:30:21,912 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 2 proven. 9 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2020-10-27 14:30:21,912 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2035853839] [2020-10-27 14:30:21,914 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 14:30:21,914 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-10-27 14:30:21,914 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1725306453] [2020-10-27 14:30:21,916 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-27 14:30:21,916 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 14:30:21,917 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-27 14:30:21,918 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=91, Unknown=0, NotChecked=0, Total=110 [2020-10-27 14:30:21,918 INFO L87 Difference]: Start difference. First operand 40 states and 42 transitions. Second operand 11 states. [2020-10-27 14:30:22,324 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 14:30:22,324 INFO L93 Difference]: Finished difference Result 54 states and 56 transitions. [2020-10-27 14:30:22,325 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-27 14:30:22,325 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 37 [2020-10-27 14:30:22,326 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 14:30:22,326 INFO L225 Difference]: With dead ends: 54 [2020-10-27 14:30:22,326 INFO L226 Difference]: Without dead ends: 50 [2020-10-27 14:30:22,327 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=52, Invalid=254, Unknown=0, NotChecked=0, Total=306 [2020-10-27 14:30:22,328 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states. [2020-10-27 14:30:22,335 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 48. [2020-10-27 14:30:22,336 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 48 states. [2020-10-27 14:30:22,337 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 50 transitions. [2020-10-27 14:30:22,337 INFO L78 Accepts]: Start accepts. Automaton has 48 states and 50 transitions. Word has length 37 [2020-10-27 14:30:22,338 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 14:30:22,338 INFO L481 AbstractCegarLoop]: Abstraction has 48 states and 50 transitions. [2020-10-27 14:30:22,338 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-27 14:30:22,338 INFO L276 IsEmpty]: Start isEmpty. Operand 48 states and 50 transitions. [2020-10-27 14:30:22,339 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2020-10-27 14:30:22,339 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 14:30:22,339 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 14:30:22,340 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-27 14:30:22,340 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 14:30:22,340 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 14:30:22,340 INFO L82 PathProgramCache]: Analyzing trace with hash -29429398, now seen corresponding path program 3 times [2020-10-27 14:30:22,341 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 14:30:22,341 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [551039799] [2020-10-27 14:30:22,341 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 14:30:22,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:30:22,363 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:30:22,382 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:30:22,510 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:30:24,860 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:30:24,860 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 59 [2020-10-27 14:30:24,860 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-27 14:30:24,861 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2504 [2020-10-27 14:30:24,861 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:30:24,861 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-27 14:30:24,861 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-10-27 14:30:24,861 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 35 [2020-10-27 14:30:24,862 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:30:25,070 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 14:30:25,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:30:25,074 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:30:25,077 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:30:25,077 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 14:30:25,078 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:30:25,078 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-27 14:30:25,078 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:30:25,078 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:30:25,079 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:30:25,079 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:30:25,079 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:30:25,082 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-10-27 14:30:25,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:30:25,085 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:30:25,088 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:30:25,088 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:30:25,089 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:30:25,089 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 14:30:25,089 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:30:25,089 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 14:30:25,089 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:30:25,089 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 14:30:25,090 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:30:25,096 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2020-10-27 14:30:25,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:30:25,100 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:30:25,103 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:30:25,103 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:30:25,103 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:30:25,103 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 14:30:25,104 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:30:25,104 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 14:30:25,104 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:30:25,104 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 14:30:25,104 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:30:25,114 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 4 proven. 17 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2020-10-27 14:30:25,115 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [551039799] [2020-10-27 14:30:25,115 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 14:30:25,115 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-10-27 14:30:25,116 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2132950577] [2020-10-27 14:30:25,116 INFO L461 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-27 14:30:25,117 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 14:30:25,117 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-27 14:30:25,118 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=133, Unknown=0, NotChecked=0, Total=156 [2020-10-27 14:30:25,118 INFO L87 Difference]: Start difference. First operand 48 states and 50 transitions. Second operand 13 states. [2020-10-27 14:30:25,588 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 14:30:25,588 INFO L93 Difference]: Finished difference Result 64 states and 66 transitions. [2020-10-27 14:30:25,589 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-10-27 14:30:25,589 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 45 [2020-10-27 14:30:25,591 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 14:30:25,592 INFO L225 Difference]: With dead ends: 64 [2020-10-27 14:30:25,592 INFO L226 Difference]: Without dead ends: 60 [2020-10-27 14:30:25,593 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=55, Invalid=325, Unknown=0, NotChecked=0, Total=380 [2020-10-27 14:30:25,593 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60 states. [2020-10-27 14:30:25,608 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60 to 56. [2020-10-27 14:30:25,609 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 56 states. [2020-10-27 14:30:25,610 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 58 transitions. [2020-10-27 14:30:25,611 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 58 transitions. Word has length 45 [2020-10-27 14:30:25,612 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 14:30:25,612 INFO L481 AbstractCegarLoop]: Abstraction has 56 states and 58 transitions. [2020-10-27 14:30:25,612 INFO L482 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-27 14:30:25,612 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 58 transitions. [2020-10-27 14:30:25,615 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2020-10-27 14:30:25,616 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 14:30:25,616 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 14:30:25,616 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-27 14:30:25,616 INFO L429 AbstractCegarLoop]: === Iteration 8 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 14:30:25,617 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 14:30:25,617 INFO L82 PathProgramCache]: Analyzing trace with hash -1490231868, now seen corresponding path program 4 times [2020-10-27 14:30:25,623 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 14:30:25,624 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [578794553] [2020-10-27 14:30:25,624 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 14:30:25,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:30:25,656 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:30:25,674 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:30:26,412 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:30:26,413 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 69 [2020-10-27 14:30:26,414 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 14:30:26,414 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 765 [2020-10-27 14:30:26,414 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:30:26,414 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-27 14:30:26,415 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-10-27 14:30:26,415 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-27 14:30:26,415 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:30:26,485 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 14:30:26,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:30:26,489 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:30:26,491 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:30:26,492 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 14:30:26,492 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:30:26,492 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 14:30:26,493 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:30:26,493 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:30:26,493 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:30:26,493 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:30:26,494 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:30:26,497 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-10-27 14:30:26,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:30:26,500 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:30:26,501 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:30:26,501 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:30:26,501 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:30:26,502 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 14:30:26,502 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:30:26,503 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:30:26,503 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-27 14:30:26,503 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:30:26,503 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-27 14:30:26,505 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2020-10-27 14:30:26,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:30:26,508 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:30:26,510 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:30:26,510 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:30:26,510 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:30:26,510 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 14:30:26,511 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:30:26,511 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:30:26,511 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-27 14:30:26,511 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:30:26,512 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:30:26,513 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-10-27 14:30:26,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:30:26,515 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:30:26,517 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:30:26,517 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:30:26,517 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:30:26,517 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 14:30:26,518 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:30:26,518 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:30:26,518 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-27 14:30:26,518 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:30:26,518 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:30:26,525 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 6 proven. 9 refuted. 0 times theorem prover too weak. 39 trivial. 0 not checked. [2020-10-27 14:30:26,526 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [578794553] [2020-10-27 14:30:26,526 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 14:30:26,526 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-27 14:30:26,526 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1988945564] [2020-10-27 14:30:26,527 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-27 14:30:26,527 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 14:30:26,528 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-27 14:30:26,528 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-10-27 14:30:26,528 INFO L87 Difference]: Start difference. First operand 56 states and 58 transitions. Second operand 7 states. [2020-10-27 14:30:26,664 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 14:30:26,665 INFO L93 Difference]: Finished difference Result 105 states and 110 transitions. [2020-10-27 14:30:26,665 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-27 14:30:26,665 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 53 [2020-10-27 14:30:26,666 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 14:30:26,667 INFO L225 Difference]: With dead ends: 105 [2020-10-27 14:30:26,667 INFO L226 Difference]: Without dead ends: 62 [2020-10-27 14:30:26,668 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-10-27 14:30:26,671 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62 states. [2020-10-27 14:30:26,683 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62 to 60. [2020-10-27 14:30:26,683 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 60 states. [2020-10-27 14:30:26,687 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60 states to 60 states and 62 transitions. [2020-10-27 14:30:26,688 INFO L78 Accepts]: Start accepts. Automaton has 60 states and 62 transitions. Word has length 53 [2020-10-27 14:30:26,688 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 14:30:26,688 INFO L481 AbstractCegarLoop]: Abstraction has 60 states and 62 transitions. [2020-10-27 14:30:26,688 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-27 14:30:26,689 INFO L276 IsEmpty]: Start isEmpty. Operand 60 states and 62 transitions. [2020-10-27 14:30:26,690 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2020-10-27 14:30:26,691 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 14:30:26,691 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 14:30:26,691 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-27 14:30:26,691 INFO L429 AbstractCegarLoop]: === Iteration 9 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 14:30:26,692 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 14:30:26,692 INFO L82 PathProgramCache]: Analyzing trace with hash 858325184, now seen corresponding path program 5 times [2020-10-27 14:30:26,692 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 14:30:26,693 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1533115544] [2020-10-27 14:30:26,693 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 14:30:26,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:30:26,727 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:30:26,747 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:30:27,377 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:30:30,139 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:30:30,139 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 73 [2020-10-27 14:30:30,140 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-27 14:30:30,140 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3420 [2020-10-27 14:30:30,140 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:30:30,140 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-27 14:30:30,140 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-10-27 14:30:30,140 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-27 14:30:30,141 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:30:30,225 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 14:30:30,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:30:30,228 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:30:30,234 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:30:30,234 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 14:30:30,234 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:30:30,234 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-27 14:30:30,234 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:30:30,235 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:30:30,235 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:30:30,235 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:30:30,235 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:30:30,244 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-10-27 14:30:30,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:30:30,246 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:30:30,247 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:30:30,247 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:30:30,248 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:30:30,248 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 14:30:30,248 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:30:30,248 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:30:30,248 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-27 14:30:30,249 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:30:30,249 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:30:30,250 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2020-10-27 14:30:30,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:30:30,252 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:30:30,253 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:30:30,253 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:30:30,253 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:30:30,254 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 14:30:30,254 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:30:30,254 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:30:30,254 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-27 14:30:30,254 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:30:30,254 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:30:30,256 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-10-27 14:30:30,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:30:30,258 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:30:30,259 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:30:30,260 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:30:30,260 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:30:30,260 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 14:30:30,260 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:30:30,260 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:30:30,260 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-27 14:30:30,261 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:30:30,261 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:30:30,275 INFO L134 CoverageAnalysis]: Checked inductivity of 68 backedges. 6 proven. 16 refuted. 0 times theorem prover too weak. 46 trivial. 0 not checked. [2020-10-27 14:30:30,276 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1533115544] [2020-10-27 14:30:30,276 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 14:30:30,276 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-27 14:30:30,277 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [879946424] [2020-10-27 14:30:30,279 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-27 14:30:30,283 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 14:30:30,284 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-27 14:30:30,285 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-10-27 14:30:30,285 INFO L87 Difference]: Start difference. First operand 60 states and 62 transitions. Second operand 8 states. [2020-10-27 14:30:30,409 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 14:30:30,409 INFO L93 Difference]: Finished difference Result 111 states and 116 transitions. [2020-10-27 14:30:30,409 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-27 14:30:30,410 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 57 [2020-10-27 14:30:30,410 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 14:30:30,411 INFO L225 Difference]: With dead ends: 111 [2020-10-27 14:30:30,411 INFO L226 Difference]: Without dead ends: 66 [2020-10-27 14:30:30,413 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-10-27 14:30:30,414 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66 states. [2020-10-27 14:30:30,430 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66 to 64. [2020-10-27 14:30:30,431 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 64 states. [2020-10-27 14:30:30,434 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64 states to 64 states and 66 transitions. [2020-10-27 14:30:30,435 INFO L78 Accepts]: Start accepts. Automaton has 64 states and 66 transitions. Word has length 57 [2020-10-27 14:30:30,435 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 14:30:30,435 INFO L481 AbstractCegarLoop]: Abstraction has 64 states and 66 transitions. [2020-10-27 14:30:30,435 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-27 14:30:30,436 INFO L276 IsEmpty]: Start isEmpty. Operand 64 states and 66 transitions. [2020-10-27 14:30:30,436 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2020-10-27 14:30:30,436 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 14:30:30,437 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 4, 4, 4, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 14:30:30,437 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-27 14:30:30,437 INFO L429 AbstractCegarLoop]: === Iteration 10 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 14:30:30,437 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 14:30:30,438 INFO L82 PathProgramCache]: Analyzing trace with hash -2140392004, now seen corresponding path program 6 times [2020-10-27 14:30:30,438 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 14:30:30,438 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [605043402] [2020-10-27 14:30:30,438 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 14:30:30,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:30:30,463 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:30:30,485 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:30:31,372 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:30:35,455 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:30:35,455 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 77 [2020-10-27 14:30:35,457 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-27 14:30:35,457 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-10-27 14:30:35,458 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:30:35,458 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-10-27 14:30:35,458 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 23 [2020-10-27 14:30:35,458 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 49 [2020-10-27 14:30:35,458 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:30:35,744 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 14:30:35,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:30:35,751 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:30:35,756 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:30:35,756 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 14:30:35,756 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:30:35,756 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-27 14:30:35,756 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:30:35,757 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:30:35,757 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:30:35,757 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:30:35,757 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:30:35,760 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2020-10-27 14:30:35,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:30:35,763 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:30:35,766 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:30:35,767 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:30:35,767 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:30:35,767 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-27 14:30:35,768 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:30:35,768 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 14:30:35,768 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:30:35,768 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 14:30:35,768 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-27 14:30:35,770 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-10-27 14:30:35,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:30:35,773 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:30:35,776 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:30:35,776 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:30:35,777 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:30:35,777 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 14:30:35,777 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:30:35,777 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 14:30:35,777 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:30:35,777 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 14:30:35,778 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:30:35,779 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2020-10-27 14:30:35,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:30:35,785 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:30:35,787 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:30:35,788 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:30:35,788 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:30:35,788 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 14:30:35,788 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:30:35,788 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 14:30:35,788 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:30:35,789 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 14:30:35,789 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:30:35,802 INFO L134 CoverageAnalysis]: Checked inductivity of 86 backedges. 6 proven. 41 refuted. 0 times theorem prover too weak. 39 trivial. 0 not checked. [2020-10-27 14:30:35,803 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [605043402] [2020-10-27 14:30:35,804 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 14:30:35,804 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2020-10-27 14:30:35,804 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [813730056] [2020-10-27 14:30:35,805 INFO L461 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-27 14:30:35,805 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 14:30:35,806 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-27 14:30:35,806 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=183, Unknown=0, NotChecked=0, Total=210 [2020-10-27 14:30:35,807 INFO L87 Difference]: Start difference. First operand 64 states and 66 transitions. Second operand 15 states. [2020-10-27 14:30:36,725 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 14:30:36,725 INFO L93 Difference]: Finished difference Result 78 states and 80 transitions. [2020-10-27 14:30:36,726 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-10-27 14:30:36,726 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 61 [2020-10-27 14:30:36,727 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 14:30:36,728 INFO L225 Difference]: With dead ends: 78 [2020-10-27 14:30:36,728 INFO L226 Difference]: Without dead ends: 74 [2020-10-27 14:30:36,729 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 33 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=68, Invalid=484, Unknown=0, NotChecked=0, Total=552 [2020-10-27 14:30:36,730 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 74 states. [2020-10-27 14:30:36,739 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 74 to 72. [2020-10-27 14:30:36,739 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 72 states. [2020-10-27 14:30:36,740 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 72 states to 72 states and 74 transitions. [2020-10-27 14:30:36,740 INFO L78 Accepts]: Start accepts. Automaton has 72 states and 74 transitions. Word has length 61 [2020-10-27 14:30:36,741 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 14:30:36,741 INFO L481 AbstractCegarLoop]: Abstraction has 72 states and 74 transitions. [2020-10-27 14:30:36,741 INFO L482 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-27 14:30:36,741 INFO L276 IsEmpty]: Start isEmpty. Operand 72 states and 74 transitions. [2020-10-27 14:30:36,742 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2020-10-27 14:30:36,742 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 14:30:36,742 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 14:30:36,742 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-27 14:30:36,743 INFO L429 AbstractCegarLoop]: === Iteration 11 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 14:30:36,743 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 14:30:36,743 INFO L82 PathProgramCache]: Analyzing trace with hash 1472311318, now seen corresponding path program 7 times [2020-10-27 14:30:36,744 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 14:30:36,744 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1842089853] [2020-10-27 14:30:36,744 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 14:30:36,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:30:36,779 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:30:36,802 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:30:37,809 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:30:40,456 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:30:40,457 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 87 [2020-10-27 14:30:40,457 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-27 14:30:40,457 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3691 [2020-10-27 14:30:40,457 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:30:40,457 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-27 14:30:40,457 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 23 [2020-10-27 14:30:40,458 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-27 14:30:40,458 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:30:40,537 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 14:30:40,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:30:40,540 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:30:40,543 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:30:40,544 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 14:30:40,544 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:30:40,544 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-27 14:30:40,544 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:30:40,544 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:30:40,544 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:30:40,545 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:30:40,545 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:30:40,548 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2020-10-27 14:30:40,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:30:40,551 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:30:40,552 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:30:40,552 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:30:40,553 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:30:40,553 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 14:30:40,553 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:30:40,553 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:30:40,553 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-27 14:30:40,553 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:30:40,554 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:30:40,557 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-10-27 14:30:40,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:30:40,559 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:30:40,560 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:30:40,560 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:30:40,561 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:30:40,562 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 14:30:40,562 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:30:40,562 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:30:40,562 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-27 14:30:40,563 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:30:40,563 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:30:40,564 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2020-10-27 14:30:40,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:30:40,566 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:30:40,567 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:30:40,567 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:30:40,567 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:30:40,567 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 14:30:40,567 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:30:40,568 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:30:40,568 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-27 14:30:40,568 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:30:40,568 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:30:40,569 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2020-10-27 14:30:40,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:30:40,571 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:30:40,572 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:30:40,572 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:30:40,572 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:30:40,572 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 14:30:40,572 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:30:40,573 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:30:40,573 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-27 14:30:40,573 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:30:40,573 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:30:40,581 INFO L134 CoverageAnalysis]: Checked inductivity of 114 backedges. 8 proven. 25 refuted. 0 times theorem prover too weak. 81 trivial. 0 not checked. [2020-10-27 14:30:40,582 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1842089853] [2020-10-27 14:30:40,582 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 14:30:40,582 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-10-27 14:30:40,582 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [767590184] [2020-10-27 14:30:40,583 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-27 14:30:40,583 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 14:30:40,586 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-27 14:30:40,586 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2020-10-27 14:30:40,586 INFO L87 Difference]: Start difference. First operand 72 states and 74 transitions. Second operand 9 states. [2020-10-27 14:30:40,782 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 14:30:40,783 INFO L93 Difference]: Finished difference Result 133 states and 138 transitions. [2020-10-27 14:30:40,784 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-27 14:30:40,784 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 69 [2020-10-27 14:30:40,784 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 14:30:40,786 INFO L225 Difference]: With dead ends: 133 [2020-10-27 14:30:40,786 INFO L226 Difference]: Without dead ends: 78 [2020-10-27 14:30:40,787 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2020-10-27 14:30:40,788 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 78 states. [2020-10-27 14:30:40,796 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 78 to 76. [2020-10-27 14:30:40,797 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 76 states. [2020-10-27 14:30:40,797 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76 states to 76 states and 78 transitions. [2020-10-27 14:30:40,798 INFO L78 Accepts]: Start accepts. Automaton has 76 states and 78 transitions. Word has length 69 [2020-10-27 14:30:40,798 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 14:30:40,798 INFO L481 AbstractCegarLoop]: Abstraction has 76 states and 78 transitions. [2020-10-27 14:30:40,798 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-27 14:30:40,798 INFO L276 IsEmpty]: Start isEmpty. Operand 76 states and 78 transitions. [2020-10-27 14:30:40,799 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2020-10-27 14:30:40,799 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 14:30:40,799 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 5, 5, 5, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 14:30:40,800 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-27 14:30:40,800 INFO L429 AbstractCegarLoop]: === Iteration 12 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 14:30:40,800 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 14:30:40,800 INFO L82 PathProgramCache]: Analyzing trace with hash -1632748782, now seen corresponding path program 8 times [2020-10-27 14:30:40,801 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 14:30:40,801 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1583043689] [2020-10-27 14:30:40,801 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 14:30:40,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:30:40,825 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:30:40,846 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:30:42,163 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:30:45,820 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:30:45,820 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 91 [2020-10-27 14:30:45,820 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-27 14:30:45,821 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5003 [2020-10-27 14:30:45,821 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:30:45,821 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 16 [2020-10-27 14:30:45,821 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 25 [2020-10-27 14:30:45,821 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 61 [2020-10-27 14:30:45,821 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:30:46,169 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 14:30:46,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:30:46,172 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:30:46,174 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:30:46,175 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 14:30:46,175 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:30:46,175 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 14:30:46,175 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:30:46,175 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:30:46,176 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:30:46,176 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:30:46,176 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:30:46,178 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2020-10-27 14:30:46,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:30:46,180 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:30:46,183 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:30:46,183 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:30:46,183 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:30:46,183 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 14:30:46,184 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:30:46,184 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 14:30:46,184 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:30:46,184 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 14:30:46,184 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:30:46,186 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-10-27 14:30:46,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:30:46,193 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:30:46,195 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:30:46,195 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:30:46,195 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:30:46,195 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 14:30:46,196 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:30:46,196 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 14:30:46,196 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:30:46,196 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 14:30:46,196 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:30:46,198 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2020-10-27 14:30:46,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:30:46,200 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:30:46,203 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:30:46,203 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:30:46,203 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:30:46,203 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 14:30:46,203 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:30:46,203 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 14:30:46,204 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:30:46,204 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 14:30:46,204 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:30:46,206 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2020-10-27 14:30:46,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:30:46,208 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:30:46,210 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:30:46,211 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:30:46,211 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:30:46,211 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 14:30:46,211 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:30:46,211 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 14:30:46,211 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:30:46,212 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 14:30:46,212 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:30:46,232 INFO L134 CoverageAnalysis]: Checked inductivity of 136 backedges. 8 proven. 66 refuted. 0 times theorem prover too weak. 62 trivial. 0 not checked. [2020-10-27 14:30:46,233 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1583043689] [2020-10-27 14:30:46,233 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 14:30:46,233 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17] total 17 [2020-10-27 14:30:46,233 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1340184256] [2020-10-27 14:30:46,234 INFO L461 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-27 14:30:46,234 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 14:30:46,235 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-27 14:30:46,235 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2020-10-27 14:30:46,235 INFO L87 Difference]: Start difference. First operand 76 states and 78 transitions. Second operand 17 states. [2020-10-27 14:30:47,245 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 14:30:47,246 INFO L93 Difference]: Finished difference Result 90 states and 92 transitions. [2020-10-27 14:30:47,246 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-10-27 14:30:47,246 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 73 [2020-10-27 14:30:47,247 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 14:30:47,248 INFO L225 Difference]: With dead ends: 90 [2020-10-27 14:30:47,249 INFO L226 Difference]: Without dead ends: 86 [2020-10-27 14:30:47,250 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=71, Invalid=579, Unknown=0, NotChecked=0, Total=650 [2020-10-27 14:30:47,251 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 86 states. [2020-10-27 14:30:47,264 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 86 to 84. [2020-10-27 14:30:47,265 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 84 states. [2020-10-27 14:30:47,266 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 84 states to 84 states and 86 transitions. [2020-10-27 14:30:47,266 INFO L78 Accepts]: Start accepts. Automaton has 84 states and 86 transitions. Word has length 73 [2020-10-27 14:30:47,267 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 14:30:47,267 INFO L481 AbstractCegarLoop]: Abstraction has 84 states and 86 transitions. [2020-10-27 14:30:47,267 INFO L482 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-27 14:30:47,267 INFO L276 IsEmpty]: Start isEmpty. Operand 84 states and 86 transitions. [2020-10-27 14:30:47,268 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2020-10-27 14:30:47,268 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 14:30:47,268 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 14:30:47,268 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-27 14:30:47,269 INFO L429 AbstractCegarLoop]: === Iteration 13 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 14:30:47,269 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 14:30:47,269 INFO L82 PathProgramCache]: Analyzing trace with hash 959184748, now seen corresponding path program 9 times [2020-10-27 14:30:47,270 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 14:30:47,270 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1561495088] [2020-10-27 14:30:47,270 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 14:30:47,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:30:47,295 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:30:47,314 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:30:48,300 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:30:51,288 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:30:51,288 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 101 [2020-10-27 14:30:51,288 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-27 14:30:51,289 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4001 [2020-10-27 14:30:51,289 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:30:51,289 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-27 14:30:51,289 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 25 [2020-10-27 14:30:51,289 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-27 14:30:51,289 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:30:51,382 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 14:30:51,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:30:51,387 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:30:51,394 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:30:51,395 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 14:30:51,395 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:30:51,395 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-27 14:30:51,395 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:30:51,395 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:30:51,395 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:30:51,396 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:30:51,396 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:30:51,398 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2020-10-27 14:30:51,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:30:51,402 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:30:51,403 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:30:51,403 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:30:51,403 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:30:51,403 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 14:30:51,403 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:30:51,404 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:30:51,404 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-27 14:30:51,404 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:30:51,404 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:30:51,405 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-10-27 14:30:51,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:30:51,408 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:30:51,409 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:30:51,409 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:30:51,409 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:30:51,409 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 14:30:51,410 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:30:51,410 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:30:51,410 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-27 14:30:51,410 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:30:51,410 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:30:51,411 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2020-10-27 14:30:51,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:30:51,414 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:30:51,415 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:30:51,415 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:30:51,415 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:30:51,415 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 14:30:51,416 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:30:51,416 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:30:51,416 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-27 14:30:51,416 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:30:51,416 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:30:51,417 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2020-10-27 14:30:51,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:30:51,420 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:30:51,421 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:30:51,421 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:30:51,422 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:30:51,422 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 14:30:51,422 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:30:51,422 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:30:51,423 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-27 14:30:51,423 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:30:51,423 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-27 14:30:51,425 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2020-10-27 14:30:51,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:30:51,427 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:30:51,428 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:30:51,429 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:30:51,429 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:30:51,429 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 14:30:51,429 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:30:51,430 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:30:51,430 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-27 14:30:51,430 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:30:51,430 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:30:51,445 INFO L134 CoverageAnalysis]: Checked inductivity of 172 backedges. 10 proven. 36 refuted. 0 times theorem prover too weak. 126 trivial. 0 not checked. [2020-10-27 14:30:51,446 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1561495088] [2020-10-27 14:30:51,446 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 14:30:51,446 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-10-27 14:30:51,447 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1303034196] [2020-10-27 14:30:51,447 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-27 14:30:51,448 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 14:30:51,449 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-27 14:30:51,449 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2020-10-27 14:30:51,449 INFO L87 Difference]: Start difference. First operand 84 states and 86 transitions. Second operand 10 states. [2020-10-27 14:30:51,657 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 14:30:51,658 INFO L93 Difference]: Finished difference Result 155 states and 160 transitions. [2020-10-27 14:30:51,658 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-27 14:30:51,658 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 81 [2020-10-27 14:30:51,659 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 14:30:51,660 INFO L225 Difference]: With dead ends: 155 [2020-10-27 14:30:51,660 INFO L226 Difference]: Without dead ends: 90 [2020-10-27 14:30:51,661 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2020-10-27 14:30:51,664 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 90 states. [2020-10-27 14:30:51,692 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 90 to 88. [2020-10-27 14:30:51,692 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 88 states. [2020-10-27 14:30:51,693 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 88 states to 88 states and 90 transitions. [2020-10-27 14:30:51,693 INFO L78 Accepts]: Start accepts. Automaton has 88 states and 90 transitions. Word has length 81 [2020-10-27 14:30:51,693 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 14:30:51,694 INFO L481 AbstractCegarLoop]: Abstraction has 88 states and 90 transitions. [2020-10-27 14:30:51,694 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-27 14:30:51,694 INFO L276 IsEmpty]: Start isEmpty. Operand 88 states and 90 transitions. [2020-10-27 14:30:51,695 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2020-10-27 14:30:51,695 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 14:30:51,696 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 6, 6, 6, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 14:30:51,696 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-27 14:30:51,696 INFO L429 AbstractCegarLoop]: === Iteration 14 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 14:30:51,697 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 14:30:51,697 INFO L82 PathProgramCache]: Analyzing trace with hash -1929060248, now seen corresponding path program 10 times [2020-10-27 14:30:51,702 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 14:30:51,703 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1020004715] [2020-10-27 14:30:51,703 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 14:30:51,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:30:51,746 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:30:51,776 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:30:53,349 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:30:56,733 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:30:56,734 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 105 [2020-10-27 14:30:56,734 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-27 14:30:56,734 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-10-27 14:30:56,734 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:30:56,734 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-27 14:30:56,734 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 27 [2020-10-27 14:30:56,734 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-27 14:30:56,734 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:30:56,840 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 14:30:56,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:30:56,843 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:30:56,846 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:30:56,846 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 14:30:56,846 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:30:56,846 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 14:30:56,846 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:30:56,847 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:30:56,847 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:30:56,847 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:30:56,847 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:30:56,850 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-10-27 14:30:56,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:30:56,855 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:30:56,857 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:30:56,857 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:30:56,857 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:30:56,857 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-27 14:30:56,858 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:30:56,858 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:30:56,858 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-27 14:30:56,858 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:30:56,858 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:30:56,859 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2020-10-27 14:30:56,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:30:56,861 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:30:56,862 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:30:56,862 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:30:56,863 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:30:56,863 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 14:30:56,863 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:30:56,863 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:30:56,863 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-27 14:30:56,863 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:30:56,864 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:30:56,865 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2020-10-27 14:30:56,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:30:56,867 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:30:56,867 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:30:56,868 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:30:56,868 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:30:56,868 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 14:30:56,868 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:30:56,868 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:30:56,868 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-27 14:30:56,869 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:30:56,869 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:30:56,872 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2020-10-27 14:30:56,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:30:56,874 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:30:56,875 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:30:56,875 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:30:56,876 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:30:56,876 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 14:30:56,876 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:30:56,876 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:30:56,876 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-27 14:30:56,876 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:30:56,877 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:30:56,878 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2020-10-27 14:30:56,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:30:56,880 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:30:56,880 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:30:56,881 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:30:56,881 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:30:56,881 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 14:30:56,881 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:30:56,881 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:30:56,881 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-27 14:30:56,882 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:30:56,882 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:30:56,890 INFO L134 CoverageAnalysis]: Checked inductivity of 198 backedges. 10 proven. 49 refuted. 0 times theorem prover too weak. 139 trivial. 0 not checked. [2020-10-27 14:30:56,891 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1020004715] [2020-10-27 14:30:56,891 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 14:30:56,891 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-10-27 14:30:56,891 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1072873356] [2020-10-27 14:30:56,892 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-27 14:30:56,892 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 14:30:56,892 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-27 14:30:56,893 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-10-27 14:30:56,893 INFO L87 Difference]: Start difference. First operand 88 states and 90 transitions. Second operand 11 states. [2020-10-27 14:30:57,127 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 14:30:57,127 INFO L93 Difference]: Finished difference Result 161 states and 166 transitions. [2020-10-27 14:30:57,128 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-27 14:30:57,128 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 85 [2020-10-27 14:30:57,128 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 14:30:57,130 INFO L225 Difference]: With dead ends: 161 [2020-10-27 14:30:57,130 INFO L226 Difference]: Without dead ends: 94 [2020-10-27 14:30:57,132 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-10-27 14:30:57,132 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 94 states. [2020-10-27 14:30:57,148 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 94 to 92. [2020-10-27 14:30:57,149 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 92 states. [2020-10-27 14:30:57,150 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 92 states to 92 states and 94 transitions. [2020-10-27 14:30:57,150 INFO L78 Accepts]: Start accepts. Automaton has 92 states and 94 transitions. Word has length 85 [2020-10-27 14:30:57,150 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 14:30:57,151 INFO L481 AbstractCegarLoop]: Abstraction has 92 states and 94 transitions. [2020-10-27 14:30:57,151 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-27 14:30:57,151 INFO L276 IsEmpty]: Start isEmpty. Operand 92 states and 94 transitions. [2020-10-27 14:30:57,152 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2020-10-27 14:30:57,152 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 14:30:57,153 INFO L422 BasicCegarLoop]: trace histogram [8, 8, 8, 8, 6, 6, 6, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 14:30:57,153 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-10-27 14:30:57,153 INFO L429 AbstractCegarLoop]: === Iteration 15 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 14:30:57,154 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 14:30:57,154 INFO L82 PathProgramCache]: Analyzing trace with hash -482225308, now seen corresponding path program 11 times [2020-10-27 14:30:57,154 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 14:30:57,154 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1271552870] [2020-10-27 14:30:57,155 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 14:30:57,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:30:57,191 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:30:57,230 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:30:59,293 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:31:02,200 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:31:02,200 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 109 [2020-10-27 14:31:02,200 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-27 14:31:02,200 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5021 [2020-10-27 14:31:02,201 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:31:02,201 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 19 [2020-10-27 14:31:02,201 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 29 [2020-10-27 14:31:02,201 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 75 [2020-10-27 14:31:02,201 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:31:02,677 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 14:31:02,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:31:02,682 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:31:02,684 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:31:02,684 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 14:31:02,684 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:31:02,684 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 14:31:02,684 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:31:02,685 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:31:02,685 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:31:02,685 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:31:02,685 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:31:02,687 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-10-27 14:31:02,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:31:02,689 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:31:02,692 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:31:02,692 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:31:02,692 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:31:02,692 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 14:31:02,693 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:31:02,693 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 14:31:02,693 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:31:02,693 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 14:31:02,693 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:31:02,695 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2020-10-27 14:31:02,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:31:02,697 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:31:02,699 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:31:02,700 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:31:02,700 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:31:02,700 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 14:31:02,700 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:31:02,700 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 14:31:02,700 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:31:02,700 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 14:31:02,701 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:31:02,702 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2020-10-27 14:31:02,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:31:02,705 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:31:02,707 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:31:02,707 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:31:02,707 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:31:02,707 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 14:31:02,707 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:31:02,708 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 14:31:02,708 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:31:02,708 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 14:31:02,708 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:31:02,710 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2020-10-27 14:31:02,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:31:02,713 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:31:02,715 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:31:02,715 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:31:02,715 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:31:02,715 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 14:31:02,715 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:31:02,716 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 14:31:02,716 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:31:02,716 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 14:31:02,716 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:31:02,717 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2020-10-27 14:31:02,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:31:02,720 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:31:02,722 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:31:02,722 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:31:02,722 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:31:02,723 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 14:31:02,723 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:31:02,723 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 14:31:02,723 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:31:02,723 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 14:31:02,723 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:31:02,751 INFO L134 CoverageAnalysis]: Checked inductivity of 228 backedges. 10 proven. 108 refuted. 0 times theorem prover too weak. 110 trivial. 0 not checked. [2020-10-27 14:31:02,752 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1271552870] [2020-10-27 14:31:02,752 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 14:31:02,752 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19] total 19 [2020-10-27 14:31:02,752 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1548390011] [2020-10-27 14:31:02,753 INFO L461 AbstractCegarLoop]: Interpolant automaton has 19 states [2020-10-27 14:31:02,753 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 14:31:02,754 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2020-10-27 14:31:02,754 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=307, Unknown=0, NotChecked=0, Total=342 [2020-10-27 14:31:02,754 INFO L87 Difference]: Start difference. First operand 92 states and 94 transitions. Second operand 19 states. [2020-10-27 14:31:03,973 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 14:31:03,973 INFO L93 Difference]: Finished difference Result 106 states and 108 transitions. [2020-10-27 14:31:03,974 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2020-10-27 14:31:03,974 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 89 [2020-10-27 14:31:03,974 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 14:31:03,975 INFO L225 Difference]: With dead ends: 106 [2020-10-27 14:31:03,975 INFO L226 Difference]: Without dead ends: 102 [2020-10-27 14:31:03,976 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 43 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=79, Invalid=733, Unknown=0, NotChecked=0, Total=812 [2020-10-27 14:31:03,977 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 102 states. [2020-10-27 14:31:03,993 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 102 to 100. [2020-10-27 14:31:03,993 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 100 states. [2020-10-27 14:31:03,999 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 100 states to 100 states and 102 transitions. [2020-10-27 14:31:03,999 INFO L78 Accepts]: Start accepts. Automaton has 100 states and 102 transitions. Word has length 89 [2020-10-27 14:31:03,999 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 14:31:03,999 INFO L481 AbstractCegarLoop]: Abstraction has 100 states and 102 transitions. [2020-10-27 14:31:04,000 INFO L482 AbstractCegarLoop]: Interpolant automaton has 19 states. [2020-10-27 14:31:04,000 INFO L276 IsEmpty]: Start isEmpty. Operand 100 states and 102 transitions. [2020-10-27 14:31:04,002 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2020-10-27 14:31:04,002 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 14:31:04,002 INFO L422 BasicCegarLoop]: trace histogram [8, 8, 8, 8, 7, 7, 7, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 14:31:04,002 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-10-27 14:31:04,003 INFO L429 AbstractCegarLoop]: === Iteration 16 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 14:31:04,004 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 14:31:04,005 INFO L82 PathProgramCache]: Analyzing trace with hash 1519592894, now seen corresponding path program 12 times [2020-10-27 14:31:04,005 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 14:31:04,005 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1068107832] [2020-10-27 14:31:04,005 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 14:31:04,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:31:04,047 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:31:04,078 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:31:06,115 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:31:09,042 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:31:09,042 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 119 [2020-10-27 14:31:09,042 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-27 14:31:09,042 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5007 [2020-10-27 14:31:09,043 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:31:09,043 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-27 14:31:09,043 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 29 [2020-10-27 14:31:09,043 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-27 14:31:09,043 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:31:09,164 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 14:31:09,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:31:09,167 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:31:09,169 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:31:09,169 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 14:31:09,169 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:31:09,169 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 14:31:09,169 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:31:09,169 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:31:09,170 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:31:09,170 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:31:09,170 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:31:09,172 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-10-27 14:31:09,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:31:09,176 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:31:09,177 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:31:09,177 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:31:09,178 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:31:09,178 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 14:31:09,178 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:31:09,178 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:31:09,178 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-27 14:31:09,178 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:31:09,178 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:31:09,180 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2020-10-27 14:31:09,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:31:09,181 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:31:09,182 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:31:09,182 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:31:09,183 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:31:09,183 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 14:31:09,183 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:31:09,183 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:31:09,183 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-27 14:31:09,183 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:31:09,183 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:31:09,184 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2020-10-27 14:31:09,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:31:09,186 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:31:09,187 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:31:09,187 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:31:09,187 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:31:09,187 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 14:31:09,187 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:31:09,187 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:31:09,187 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-27 14:31:09,188 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:31:09,188 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:31:09,189 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2020-10-27 14:31:09,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:31:09,190 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:31:09,191 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:31:09,191 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:31:09,192 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:31:09,192 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 14:31:09,192 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:31:09,192 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:31:09,192 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-27 14:31:09,192 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:31:09,192 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:31:09,197 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2020-10-27 14:31:09,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:31:09,198 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:31:09,199 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:31:09,200 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:31:09,200 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:31:09,200 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 14:31:09,200 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:31:09,200 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:31:09,200 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-27 14:31:09,200 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:31:09,201 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:31:09,203 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-10-27 14:31:09,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:31:09,206 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:31:09,207 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:31:09,207 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:31:09,207 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:31:09,208 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 14:31:09,208 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:31:09,208 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:31:09,208 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-27 14:31:09,208 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:31:09,208 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:31:09,217 INFO L134 CoverageAnalysis]: Checked inductivity of 272 backedges. 12 proven. 64 refuted. 0 times theorem prover too weak. 196 trivial. 0 not checked. [2020-10-27 14:31:09,218 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1068107832] [2020-10-27 14:31:09,221 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 14:31:09,221 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-10-27 14:31:09,221 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1993048924] [2020-10-27 14:31:09,222 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-27 14:31:09,222 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 14:31:09,223 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-27 14:31:09,223 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=75, Unknown=0, NotChecked=0, Total=132 [2020-10-27 14:31:09,223 INFO L87 Difference]: Start difference. First operand 100 states and 102 transitions. Second operand 12 states. [2020-10-27 14:31:09,392 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 14:31:09,393 INFO L93 Difference]: Finished difference Result 183 states and 188 transitions. [2020-10-27 14:31:09,393 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-27 14:31:09,393 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 97 [2020-10-27 14:31:09,393 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 14:31:09,394 INFO L225 Difference]: With dead ends: 183 [2020-10-27 14:31:09,394 INFO L226 Difference]: Without dead ends: 106 [2020-10-27 14:31:09,395 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=57, Invalid=75, Unknown=0, NotChecked=0, Total=132 [2020-10-27 14:31:09,396 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 106 states. [2020-10-27 14:31:09,404 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 106 to 104. [2020-10-27 14:31:09,404 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 104 states. [2020-10-27 14:31:09,405 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 104 states to 104 states and 106 transitions. [2020-10-27 14:31:09,405 INFO L78 Accepts]: Start accepts. Automaton has 104 states and 106 transitions. Word has length 97 [2020-10-27 14:31:09,405 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 14:31:09,406 INFO L481 AbstractCegarLoop]: Abstraction has 104 states and 106 transitions. [2020-10-27 14:31:09,406 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-27 14:31:09,406 INFO L276 IsEmpty]: Start isEmpty. Operand 104 states and 106 transitions. [2020-10-27 14:31:09,407 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2020-10-27 14:31:09,407 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 14:31:09,407 INFO L422 BasicCegarLoop]: trace histogram [9, 9, 9, 9, 7, 7, 7, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 14:31:09,407 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-10-27 14:31:09,407 INFO L429 AbstractCegarLoop]: === Iteration 17 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 14:31:09,408 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 14:31:09,408 INFO L82 PathProgramCache]: Analyzing trace with hash 779644602, now seen corresponding path program 13 times [2020-10-27 14:31:09,408 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 14:31:09,408 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [668466835] [2020-10-27 14:31:09,408 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 14:31:09,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:31:09,438 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:31:09,465 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:31:12,091 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:31:14,438 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:31:14,438 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 123 [2020-10-27 14:31:14,438 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-27 14:31:14,438 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5011 [2020-10-27 14:31:14,438 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:31:14,439 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-27 14:31:14,439 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 31 [2020-10-27 14:31:14,439 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-10-27 14:31:14,439 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:31:14,578 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 14:31:14,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:31:14,581 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:31:14,583 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:31:14,583 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 14:31:14,583 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:31:14,583 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 14:31:14,583 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:31:14,583 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:31:14,583 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:31:14,583 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:31:14,584 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:31:14,585 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2020-10-27 14:31:14,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:31:14,587 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:31:14,587 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:31:14,588 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:31:14,588 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:31:14,588 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 14:31:14,588 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:31:14,588 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:31:14,588 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-27 14:31:14,588 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:31:14,589 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:31:14,590 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2020-10-27 14:31:14,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:31:14,591 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:31:14,592 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:31:14,592 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:31:14,592 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:31:14,592 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 14:31:14,592 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:31:14,593 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:31:14,593 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-27 14:31:14,593 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:31:14,593 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:31:14,594 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2020-10-27 14:31:14,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:31:14,595 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:31:14,596 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:31:14,596 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:31:14,597 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:31:14,597 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 14:31:14,597 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:31:14,597 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:31:14,597 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-27 14:31:14,597 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:31:14,597 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:31:14,598 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2020-10-27 14:31:14,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:31:14,600 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:31:14,601 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:31:14,601 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:31:14,601 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:31:14,601 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 14:31:14,601 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:31:14,601 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:31:14,602 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-27 14:31:14,602 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:31:14,602 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:31:14,603 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2020-10-27 14:31:14,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:31:14,605 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:31:14,605 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:31:14,606 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:31:14,606 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:31:14,606 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 14:31:14,606 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:31:14,606 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:31:14,606 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-27 14:31:14,606 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:31:14,607 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:31:14,608 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2020-10-27 14:31:14,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:31:14,609 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:31:14,610 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:31:14,610 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:31:14,610 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:31:14,610 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 14:31:14,610 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:31:14,610 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:31:14,611 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-27 14:31:14,611 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:31:14,611 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:31:14,620 INFO L134 CoverageAnalysis]: Checked inductivity of 306 backedges. 12 proven. 81 refuted. 0 times theorem prover too weak. 213 trivial. 0 not checked. [2020-10-27 14:31:14,620 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [668466835] [2020-10-27 14:31:14,621 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 14:31:14,621 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-10-27 14:31:14,621 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1513929098] [2020-10-27 14:31:14,621 INFO L461 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-27 14:31:14,622 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 14:31:14,622 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-27 14:31:14,622 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=88, Unknown=0, NotChecked=0, Total=156 [2020-10-27 14:31:14,622 INFO L87 Difference]: Start difference. First operand 104 states and 106 transitions. Second operand 13 states. [2020-10-27 14:31:14,804 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 14:31:14,804 INFO L93 Difference]: Finished difference Result 189 states and 194 transitions. [2020-10-27 14:31:14,804 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-27 14:31:14,805 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 101 [2020-10-27 14:31:14,805 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 14:31:14,806 INFO L225 Difference]: With dead ends: 189 [2020-10-27 14:31:14,806 INFO L226 Difference]: Without dead ends: 110 [2020-10-27 14:31:14,807 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=68, Invalid=88, Unknown=0, NotChecked=0, Total=156 [2020-10-27 14:31:14,807 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 110 states. [2020-10-27 14:31:14,818 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 110 to 108. [2020-10-27 14:31:14,818 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 108 states. [2020-10-27 14:31:14,819 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 108 states to 108 states and 110 transitions. [2020-10-27 14:31:14,820 INFO L78 Accepts]: Start accepts. Automaton has 108 states and 110 transitions. Word has length 101 [2020-10-27 14:31:14,821 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 14:31:14,821 INFO L481 AbstractCegarLoop]: Abstraction has 108 states and 110 transitions. [2020-10-27 14:31:14,821 INFO L482 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-27 14:31:14,822 INFO L276 IsEmpty]: Start isEmpty. Operand 108 states and 110 transitions. [2020-10-27 14:31:14,823 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2020-10-27 14:31:14,823 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 14:31:14,823 INFO L422 BasicCegarLoop]: trace histogram [10, 10, 10, 10, 7, 7, 7, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 14:31:14,823 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-10-27 14:31:14,824 INFO L429 AbstractCegarLoop]: === Iteration 18 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 14:31:14,824 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 14:31:14,824 INFO L82 PathProgramCache]: Analyzing trace with hash 1617283510, now seen corresponding path program 14 times [2020-10-27 14:31:14,825 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 14:31:14,825 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1854328542] [2020-10-27 14:31:14,825 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 14:31:14,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:31:14,853 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:31:14,877 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:31:17,833 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:31:19,846 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:31:19,846 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 127 [2020-10-27 14:31:19,846 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-27 14:31:19,846 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-10-27 14:31:19,847 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:31:19,847 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-27 14:31:19,847 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 33 [2020-10-27 14:31:19,847 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-10-27 14:31:19,847 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:31:19,998 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 14:31:20,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:31:20,002 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:31:20,005 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:31:20,005 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 14:31:20,005 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:31:20,005 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 14:31:20,006 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:31:20,006 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:31:20,006 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:31:20,006 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:31:20,006 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:31:20,008 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2020-10-27 14:31:20,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:31:20,009 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:31:20,010 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:31:20,010 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:31:20,010 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:31:20,010 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 14:31:20,011 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:31:20,011 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:31:20,011 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-27 14:31:20,011 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:31:20,011 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:31:20,012 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2020-10-27 14:31:20,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:31:20,013 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:31:20,014 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:31:20,014 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:31:20,014 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:31:20,015 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 14:31:20,015 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:31:20,015 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:31:20,015 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-27 14:31:20,015 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:31:20,015 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:31:20,016 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2020-10-27 14:31:20,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:31:20,017 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:31:20,017 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:31:20,017 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:31:20,018 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:31:20,018 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-27 14:31:20,018 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:31:20,018 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:31:20,018 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-27 14:31:20,018 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:31:20,018 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:31:20,019 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2020-10-27 14:31:20,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:31:20,020 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:31:20,021 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:31:20,021 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:31:20,021 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:31:20,021 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-27 14:31:20,021 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:31:20,021 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:31:20,022 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-27 14:31:20,022 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:31:20,022 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:31:20,023 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-10-27 14:31:20,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:31:20,024 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:31:20,025 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:31:20,025 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:31:20,025 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:31:20,025 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 14:31:20,025 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:31:20,025 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:31:20,025 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-27 14:31:20,026 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:31:20,026 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:31:20,027 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2020-10-27 14:31:20,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:31:20,028 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:31:20,029 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:31:20,029 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:31:20,030 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:31:20,030 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 14:31:20,030 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:31:20,030 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:31:20,030 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-27 14:31:20,030 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:31:20,030 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:31:20,040 INFO L134 CoverageAnalysis]: Checked inductivity of 344 backedges. 12 proven. 100 refuted. 0 times theorem prover too weak. 232 trivial. 0 not checked. [2020-10-27 14:31:20,041 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1854328542] [2020-10-27 14:31:20,041 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 14:31:20,041 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2020-10-27 14:31:20,041 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1604823043] [2020-10-27 14:31:20,042 INFO L461 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-10-27 14:31:20,042 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 14:31:20,042 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-10-27 14:31:20,043 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=80, Invalid=102, Unknown=0, NotChecked=0, Total=182 [2020-10-27 14:31:20,043 INFO L87 Difference]: Start difference. First operand 108 states and 110 transitions. Second operand 14 states. [2020-10-27 14:31:20,260 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 14:31:20,260 INFO L93 Difference]: Finished difference Result 195 states and 200 transitions. [2020-10-27 14:31:20,261 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-10-27 14:31:20,261 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 105 [2020-10-27 14:31:20,261 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 14:31:20,262 INFO L225 Difference]: With dead ends: 195 [2020-10-27 14:31:20,263 INFO L226 Difference]: Without dead ends: 114 [2020-10-27 14:31:20,264 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=80, Invalid=102, Unknown=0, NotChecked=0, Total=182 [2020-10-27 14:31:20,264 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 114 states. [2020-10-27 14:31:20,279 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 114 to 112. [2020-10-27 14:31:20,279 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 112 states. [2020-10-27 14:31:20,280 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 112 states to 112 states and 114 transitions. [2020-10-27 14:31:20,281 INFO L78 Accepts]: Start accepts. Automaton has 112 states and 114 transitions. Word has length 105 [2020-10-27 14:31:20,282 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 14:31:20,282 INFO L481 AbstractCegarLoop]: Abstraction has 112 states and 114 transitions. [2020-10-27 14:31:20,282 INFO L482 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-10-27 14:31:20,282 INFO L276 IsEmpty]: Start isEmpty. Operand 112 states and 114 transitions. [2020-10-27 14:31:20,283 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2020-10-27 14:31:20,283 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 14:31:20,283 INFO L422 BasicCegarLoop]: trace histogram [11, 11, 11, 11, 7, 7, 7, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 14:31:20,283 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2020-10-27 14:31:20,284 INFO L429 AbstractCegarLoop]: === Iteration 19 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 14:31:20,284 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 14:31:20,284 INFO L82 PathProgramCache]: Analyzing trace with hash -628738382, now seen corresponding path program 15 times [2020-10-27 14:31:20,284 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 14:31:20,286 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2130145470] [2020-10-27 14:31:20,287 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 14:31:20,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:31:20,319 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:31:20,348 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:31:24,492 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:31:25,321 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:31:25,322 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 131 [2020-10-27 14:31:25,322 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-27 14:31:25,322 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5014 [2020-10-27 14:31:25,322 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:31:25,323 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-10-27 14:31:25,323 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 35 [2020-10-27 14:31:25,323 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-10-27 14:31:25,323 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:31:25,508 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 14:31:25,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:31:25,512 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:31:25,514 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:31:25,514 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 14:31:25,514 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:31:25,514 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 14:31:25,515 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:31:25,515 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:31:25,515 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:31:25,515 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:31:25,515 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:31:25,517 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2020-10-27 14:31:25,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:31:25,518 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:31:25,519 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:31:25,519 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:31:25,520 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:31:25,520 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 14:31:25,520 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:31:25,520 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:31:25,520 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-27 14:31:25,520 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:31:25,520 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:31:25,522 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2020-10-27 14:31:25,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:31:25,524 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:31:25,525 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:31:25,525 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:31:25,525 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:31:25,525 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 14:31:25,525 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:31:25,526 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:31:25,526 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-27 14:31:25,526 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:31:25,526 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:31:25,527 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2020-10-27 14:31:25,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:31:25,528 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:31:25,529 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:31:25,529 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:31:25,529 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:31:25,529 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 14:31:25,529 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:31:25,530 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:31:25,530 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-27 14:31:25,530 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:31:25,530 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:31:25,531 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2020-10-27 14:31:25,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:31:25,532 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:31:25,533 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:31:25,533 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:31:25,533 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:31:25,533 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 14:31:25,533 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:31:25,533 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:31:25,534 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-27 14:31:25,534 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:31:25,534 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:31:25,535 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2020-10-27 14:31:25,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:31:25,536 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:31:25,537 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:31:25,537 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:31:25,537 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:31:25,537 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 14:31:25,538 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:31:25,538 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:31:25,538 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-27 14:31:25,538 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:31:25,538 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:31:25,539 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-10-27 14:31:25,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:31:25,540 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:31:25,541 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:31:25,541 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:31:25,541 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:31:25,541 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-27 14:31:25,541 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:31:25,541 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:31:25,541 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-27 14:31:25,541 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:31:25,542 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:31:25,551 INFO L134 CoverageAnalysis]: Checked inductivity of 386 backedges. 12 proven. 121 refuted. 0 times theorem prover too weak. 253 trivial. 0 not checked. [2020-10-27 14:31:25,552 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2130145470] [2020-10-27 14:31:25,552 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 14:31:25,552 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2020-10-27 14:31:25,552 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1924442678] [2020-10-27 14:31:25,553 INFO L461 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-27 14:31:25,553 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 14:31:25,553 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-27 14:31:25,554 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=93, Invalid=117, Unknown=0, NotChecked=0, Total=210 [2020-10-27 14:31:25,554 INFO L87 Difference]: Start difference. First operand 112 states and 114 transitions. Second operand 15 states. [2020-10-27 14:31:25,793 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 14:31:25,793 INFO L93 Difference]: Finished difference Result 201 states and 206 transitions. [2020-10-27 14:31:25,794 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-27 14:31:25,794 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 109 [2020-10-27 14:31:25,794 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 14:31:25,795 INFO L225 Difference]: With dead ends: 201 [2020-10-27 14:31:25,796 INFO L226 Difference]: Without dead ends: 118 [2020-10-27 14:31:25,796 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=93, Invalid=117, Unknown=0, NotChecked=0, Total=210 [2020-10-27 14:31:25,797 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 118 states. [2020-10-27 14:31:25,806 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 118 to 116. [2020-10-27 14:31:25,806 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 116 states. [2020-10-27 14:31:25,807 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 116 states to 116 states and 118 transitions. [2020-10-27 14:31:25,807 INFO L78 Accepts]: Start accepts. Automaton has 116 states and 118 transitions. Word has length 109 [2020-10-27 14:31:25,808 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 14:31:25,808 INFO L481 AbstractCegarLoop]: Abstraction has 116 states and 118 transitions. [2020-10-27 14:31:25,808 INFO L482 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-27 14:31:25,808 INFO L276 IsEmpty]: Start isEmpty. Operand 116 states and 118 transitions. [2020-10-27 14:31:25,809 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2020-10-27 14:31:25,810 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 14:31:25,810 INFO L422 BasicCegarLoop]: trace histogram [12, 12, 12, 12, 7, 7, 7, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 14:31:25,810 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2020-10-27 14:31:25,810 INFO L429 AbstractCegarLoop]: === Iteration 20 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 14:31:25,810 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 14:31:25,811 INFO L82 PathProgramCache]: Analyzing trace with hash 1753527726, now seen corresponding path program 16 times [2020-10-27 14:31:25,811 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 14:31:25,811 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [38747453] [2020-10-27 14:31:25,811 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 14:31:25,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:31:25,848 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:31:25,884 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:31:30,735 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:31:30,837 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:31:30,837 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 135 [2020-10-27 14:31:30,837 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-27 14:31:30,838 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-10-27 14:31:30,838 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:31:30,838 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-10-27 14:31:30,838 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 37 [2020-10-27 14:31:30,838 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-10-27 14:31:30,838 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:31:31,037 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 14:31:31,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:31:31,040 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:31:31,041 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:31:31,042 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 14:31:31,042 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:31:31,042 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 14:31:31,042 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:31:31,042 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:31:31,042 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:31:31,042 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:31:31,042 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:31:31,044 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2020-10-27 14:31:31,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:31:31,046 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:31:31,046 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:31:31,047 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:31:31,047 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:31:31,047 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 14:31:31,047 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:31:31,047 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:31:31,047 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-27 14:31:31,047 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:31:31,048 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:31:31,048 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2020-10-27 14:31:31,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:31:31,055 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:31:31,055 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:31:31,055 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:31:31,055 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:31:31,056 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-27 14:31:31,056 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:31:31,056 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:31:31,056 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-27 14:31:31,056 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:31:31,056 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:31:31,057 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2020-10-27 14:31:31,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:31:31,058 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:31:31,058 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:31:31,059 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:31:31,059 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:31:31,059 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-27 14:31:31,059 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:31:31,059 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:31:31,059 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-27 14:31:31,059 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:31:31,059 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:31:31,060 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-10-27 14:31:31,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:31:31,064 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:31:31,065 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:31:31,065 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:31:31,065 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:31:31,065 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 14:31:31,065 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:31:31,065 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:31:31,066 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-27 14:31:31,066 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:31:31,066 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:31:31,067 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2020-10-27 14:31:31,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:31:31,068 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:31:31,069 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:31:31,069 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:31:31,069 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:31:31,069 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 14:31:31,069 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:31:31,069 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:31:31,070 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-27 14:31:31,070 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:31:31,070 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:31:31,071 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-10-27 14:31:31,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:31:31,074 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:31:31,074 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:31:31,075 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:31:31,075 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:31:31,075 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 14:31:31,075 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:31:31,075 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:31:31,075 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-27 14:31:31,075 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:31:31,075 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:31:31,086 INFO L134 CoverageAnalysis]: Checked inductivity of 432 backedges. 12 proven. 144 refuted. 0 times theorem prover too weak. 276 trivial. 0 not checked. [2020-10-27 14:31:31,086 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [38747453] [2020-10-27 14:31:31,086 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 14:31:31,086 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2020-10-27 14:31:31,086 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2107512014] [2020-10-27 14:31:31,087 INFO L461 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-10-27 14:31:31,087 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 14:31:31,088 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-10-27 14:31:31,089 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=107, Invalid=133, Unknown=0, NotChecked=0, Total=240 [2020-10-27 14:31:31,089 INFO L87 Difference]: Start difference. First operand 116 states and 118 transitions. Second operand 16 states. [2020-10-27 14:31:31,351 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 14:31:31,352 INFO L93 Difference]: Finished difference Result 207 states and 212 transitions. [2020-10-27 14:31:31,352 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-10-27 14:31:31,352 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 113 [2020-10-27 14:31:31,353 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 14:31:31,354 INFO L225 Difference]: With dead ends: 207 [2020-10-27 14:31:31,354 INFO L226 Difference]: Without dead ends: 122 [2020-10-27 14:31:31,355 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=107, Invalid=133, Unknown=0, NotChecked=0, Total=240 [2020-10-27 14:31:31,356 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 122 states. [2020-10-27 14:31:31,364 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 122 to 120. [2020-10-27 14:31:31,365 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 120 states. [2020-10-27 14:31:31,366 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 120 states to 120 states and 122 transitions. [2020-10-27 14:31:31,366 INFO L78 Accepts]: Start accepts. Automaton has 120 states and 122 transitions. Word has length 113 [2020-10-27 14:31:31,366 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 14:31:31,366 INFO L481 AbstractCegarLoop]: Abstraction has 120 states and 122 transitions. [2020-10-27 14:31:31,366 INFO L482 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-10-27 14:31:31,366 INFO L276 IsEmpty]: Start isEmpty. Operand 120 states and 122 transitions. [2020-10-27 14:31:31,367 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2020-10-27 14:31:31,368 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 14:31:31,368 INFO L422 BasicCegarLoop]: trace histogram [13, 13, 13, 13, 7, 7, 7, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 14:31:31,368 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2020-10-27 14:31:31,368 INFO L429 AbstractCegarLoop]: === Iteration 21 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 14:31:31,368 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 14:31:31,369 INFO L82 PathProgramCache]: Analyzing trace with hash 931940010, now seen corresponding path program 17 times [2020-10-27 14:31:31,369 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 14:31:31,369 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2030574384] [2020-10-27 14:31:31,369 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 14:31:31,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:31:31,408 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:31:31,472 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:31:36,413 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:31:36,414 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 139 [2020-10-27 14:31:36,414 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 14:31:36,414 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5019 [2020-10-27 14:31:36,414 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:31:36,414 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-10-27 14:31:36,414 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 39 [2020-10-27 14:31:36,414 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-10-27 14:31:36,414 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:31:36,634 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 14:31:36,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:31:36,637 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:31:36,639 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:31:36,639 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 14:31:36,639 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:31:36,639 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 14:31:36,639 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:31:36,640 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:31:36,640 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:31:36,640 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:31:36,640 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:31:36,641 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2020-10-27 14:31:36,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:31:36,642 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:31:36,643 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:31:36,643 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:31:36,643 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:31:36,643 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-27 14:31:36,643 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:31:36,643 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:31:36,643 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-27 14:31:36,644 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:31:36,644 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:31:36,644 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2020-10-27 14:31:36,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:31:36,645 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:31:36,646 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:31:36,646 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:31:36,646 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:31:36,646 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-27 14:31:36,647 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:31:36,647 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:31:36,647 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-27 14:31:36,647 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:31:36,647 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:31:36,648 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2020-10-27 14:31:36,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:31:36,649 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:31:36,650 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:31:36,650 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:31:36,651 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:31:36,651 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 14:31:36,651 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:31:36,651 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:31:36,651 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-27 14:31:36,651 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:31:36,651 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:31:36,652 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2020-10-27 14:31:36,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:31:36,654 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:31:36,654 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:31:36,655 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:31:36,655 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:31:36,655 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 14:31:36,655 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:31:36,655 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:31:36,655 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-27 14:31:36,656 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:31:36,656 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:31:36,657 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-10-27 14:31:36,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:31:36,658 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:31:36,659 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:31:36,659 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:31:36,659 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:31:36,659 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-27 14:31:36,659 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:31:36,659 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:31:36,659 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-27 14:31:36,659 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:31:36,659 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:31:36,660 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2020-10-27 14:31:36,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:31:36,661 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:31:36,662 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:31:36,662 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:31:36,662 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:31:36,662 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 14:31:36,663 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:31:36,663 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:31:36,663 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-27 14:31:36,663 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:31:36,663 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:31:36,672 INFO L134 CoverageAnalysis]: Checked inductivity of 482 backedges. 12 proven. 169 refuted. 0 times theorem prover too weak. 301 trivial. 0 not checked. [2020-10-27 14:31:36,673 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2030574384] [2020-10-27 14:31:36,673 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 14:31:36,673 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17] total 17 [2020-10-27 14:31:36,673 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [202598378] [2020-10-27 14:31:36,674 INFO L461 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-27 14:31:36,674 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 14:31:36,674 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-27 14:31:36,675 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=122, Invalid=150, Unknown=0, NotChecked=0, Total=272 [2020-10-27 14:31:36,675 INFO L87 Difference]: Start difference. First operand 120 states and 122 transitions. Second operand 17 states. [2020-10-27 14:31:36,965 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 14:31:36,965 INFO L93 Difference]: Finished difference Result 213 states and 218 transitions. [2020-10-27 14:31:36,966 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-10-27 14:31:36,966 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 117 [2020-10-27 14:31:36,966 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 14:31:36,968 INFO L225 Difference]: With dead ends: 213 [2020-10-27 14:31:36,968 INFO L226 Difference]: Without dead ends: 126 [2020-10-27 14:31:36,969 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=122, Invalid=150, Unknown=0, NotChecked=0, Total=272 [2020-10-27 14:31:36,969 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 126 states. [2020-10-27 14:31:36,980 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 126 to 124. [2020-10-27 14:31:36,980 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 124 states. [2020-10-27 14:31:36,982 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 124 states to 124 states and 126 transitions. [2020-10-27 14:31:36,982 INFO L78 Accepts]: Start accepts. Automaton has 124 states and 126 transitions. Word has length 117 [2020-10-27 14:31:36,983 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 14:31:36,983 INFO L481 AbstractCegarLoop]: Abstraction has 124 states and 126 transitions. [2020-10-27 14:31:36,983 INFO L482 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-27 14:31:36,983 INFO L276 IsEmpty]: Start isEmpty. Operand 124 states and 126 transitions. [2020-10-27 14:31:36,985 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2020-10-27 14:31:36,985 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 14:31:36,985 INFO L422 BasicCegarLoop]: trace histogram [14, 14, 14, 14, 7, 7, 7, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 14:31:36,986 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2020-10-27 14:31:36,986 INFO L429 AbstractCegarLoop]: === Iteration 22 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 14:31:36,986 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 14:31:36,986 INFO L82 PathProgramCache]: Analyzing trace with hash 1447553446, now seen corresponding path program 18 times [2020-10-27 14:31:36,987 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 14:31:36,987 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [110341843] [2020-10-27 14:31:36,987 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 14:31:37,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:31:37,024 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:31:37,063 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:31:42,043 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:31:42,043 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 143 [2020-10-27 14:31:42,043 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 14:31:42,044 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5033 [2020-10-27 14:31:42,044 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:31:42,044 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 16 [2020-10-27 14:31:42,044 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 41 [2020-10-27 14:31:42,044 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-10-27 14:31:42,044 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:31:42,295 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 14:31:42,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:31:42,300 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:31:42,302 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:31:42,302 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 14:31:42,303 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:31:42,303 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 14:31:42,303 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:31:42,303 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:31:42,303 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:31:42,303 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:31:42,304 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:31:42,306 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2020-10-27 14:31:42,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:31:42,307 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:31:42,308 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:31:42,309 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:31:42,309 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:31:42,309 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 14:31:42,309 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:31:42,309 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:31:42,309 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-27 14:31:42,309 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:31:42,310 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:31:42,311 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2020-10-27 14:31:42,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:31:42,312 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:31:42,313 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:31:42,313 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:31:42,314 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:31:42,314 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 14:31:42,314 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:31:42,314 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:31:42,314 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-27 14:31:42,314 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:31:42,314 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:31:42,316 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-10-27 14:31:42,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:31:42,317 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:31:42,318 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:31:42,318 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:31:42,319 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:31:42,319 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 14:31:42,319 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:31:42,319 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:31:42,319 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-27 14:31:42,319 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:31:42,319 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:31:42,321 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2020-10-27 14:31:42,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:31:42,322 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:31:42,323 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:31:42,324 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:31:42,324 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:31:42,324 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 14:31:42,324 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:31:42,324 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:31:42,324 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-27 14:31:42,324 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:31:42,325 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:31:42,326 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-10-27 14:31:42,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:31:42,327 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:31:42,328 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:31:42,328 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:31:42,328 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:31:42,329 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 14:31:42,329 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:31:42,329 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:31:42,329 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-27 14:31:42,329 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:31:42,329 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:31:42,330 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2020-10-27 14:31:42,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:31:42,332 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:31:42,333 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:31:42,334 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:31:42,334 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:31:42,334 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 14:31:42,334 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:31:42,334 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:31:42,334 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-27 14:31:42,334 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:31:42,335 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:31:42,348 INFO L134 CoverageAnalysis]: Checked inductivity of 536 backedges. 12 proven. 196 refuted. 0 times theorem prover too weak. 328 trivial. 0 not checked. [2020-10-27 14:31:42,348 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [110341843] [2020-10-27 14:31:42,348 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 14:31:42,348 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18] total 18 [2020-10-27 14:31:42,349 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1444671146] [2020-10-27 14:31:42,349 INFO L461 AbstractCegarLoop]: Interpolant automaton has 18 states [2020-10-27 14:31:42,349 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 14:31:42,350 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2020-10-27 14:31:42,350 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=138, Invalid=168, Unknown=0, NotChecked=0, Total=306 [2020-10-27 14:31:42,350 INFO L87 Difference]: Start difference. First operand 124 states and 126 transitions. Second operand 18 states. [2020-10-27 14:31:42,643 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 14:31:42,644 INFO L93 Difference]: Finished difference Result 219 states and 224 transitions. [2020-10-27 14:31:42,645 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-10-27 14:31:42,646 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 121 [2020-10-27 14:31:42,646 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 14:31:42,648 INFO L225 Difference]: With dead ends: 219 [2020-10-27 14:31:42,648 INFO L226 Difference]: Without dead ends: 130 [2020-10-27 14:31:42,649 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=138, Invalid=168, Unknown=0, NotChecked=0, Total=306 [2020-10-27 14:31:42,649 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 130 states. [2020-10-27 14:31:42,657 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 130 to 128. [2020-10-27 14:31:42,657 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 128 states. [2020-10-27 14:31:42,658 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 128 states to 128 states and 130 transitions. [2020-10-27 14:31:42,658 INFO L78 Accepts]: Start accepts. Automaton has 128 states and 130 transitions. Word has length 121 [2020-10-27 14:31:42,659 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 14:31:42,659 INFO L481 AbstractCegarLoop]: Abstraction has 128 states and 130 transitions. [2020-10-27 14:31:42,659 INFO L482 AbstractCegarLoop]: Interpolant automaton has 18 states. [2020-10-27 14:31:42,659 INFO L276 IsEmpty]: Start isEmpty. Operand 128 states and 130 transitions. [2020-10-27 14:31:42,660 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2020-10-27 14:31:42,660 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 14:31:42,661 INFO L422 BasicCegarLoop]: trace histogram [15, 15, 15, 15, 7, 7, 7, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 14:31:42,661 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2020-10-27 14:31:42,661 INFO L429 AbstractCegarLoop]: === Iteration 23 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 14:31:42,661 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 14:31:42,661 INFO L82 PathProgramCache]: Analyzing trace with hash 887266978, now seen corresponding path program 19 times [2020-10-27 14:31:42,662 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 14:31:42,662 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1558254914] [2020-10-27 14:31:42,662 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 14:31:42,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:31:42,702 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:31:42,728 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:31:47,697 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:31:47,697 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 147 [2020-10-27 14:31:47,697 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 14:31:47,697 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5007 [2020-10-27 14:31:47,698 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:31:47,698 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 17 [2020-10-27 14:31:47,698 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 43 [2020-10-27 14:31:47,698 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 32 [2020-10-27 14:31:47,698 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:31:47,965 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 14:31:47,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:31:47,969 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:31:47,970 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:31:47,971 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 14:31:47,971 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:31:47,971 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 14:31:47,971 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:31:47,971 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:31:47,971 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:31:47,971 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:31:47,971 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:31:47,973 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2020-10-27 14:31:47,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:31:47,974 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:31:47,975 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:31:47,975 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:31:47,975 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:31:47,975 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 14:31:47,975 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:31:47,975 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:31:47,975 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-27 14:31:47,975 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:31:47,976 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:31:47,976 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2020-10-27 14:31:47,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:31:47,978 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:31:47,978 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:31:47,979 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:31:47,979 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:31:47,979 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 14:31:47,979 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:31:47,979 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:31:47,979 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-27 14:31:47,979 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:31:47,980 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:31:47,980 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2020-10-27 14:31:47,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:31:47,982 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:31:47,983 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:31:47,983 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:31:47,983 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:31:47,983 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 14:31:47,983 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:31:47,984 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:31:47,984 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-27 14:31:47,984 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:31:47,984 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:31:47,985 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-10-27 14:31:47,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:31:47,986 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:31:47,987 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:31:47,987 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:31:47,987 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:31:47,988 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 14:31:47,988 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:31:47,988 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:31:47,988 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-27 14:31:47,988 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:31:47,988 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:31:47,989 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2020-10-27 14:31:47,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:31:47,991 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:31:47,992 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:31:47,992 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:31:47,992 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:31:47,992 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 14:31:47,992 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:31:47,992 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:31:47,993 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-27 14:31:47,993 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:31:47,993 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:31:47,994 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2020-10-27 14:31:47,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:31:47,995 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:31:47,996 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:31:47,996 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:31:47,996 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:31:47,996 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 14:31:47,997 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:31:47,997 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:31:47,997 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-27 14:31:47,997 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:31:47,997 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:31:48,011 INFO L134 CoverageAnalysis]: Checked inductivity of 594 backedges. 12 proven. 225 refuted. 0 times theorem prover too weak. 357 trivial. 0 not checked. [2020-10-27 14:31:48,011 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1558254914] [2020-10-27 14:31:48,011 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 14:31:48,011 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19] total 19 [2020-10-27 14:31:48,012 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1626196799] [2020-10-27 14:31:48,012 INFO L461 AbstractCegarLoop]: Interpolant automaton has 19 states [2020-10-27 14:31:48,012 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 14:31:48,013 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2020-10-27 14:31:48,013 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=155, Invalid=187, Unknown=0, NotChecked=0, Total=342 [2020-10-27 14:31:48,013 INFO L87 Difference]: Start difference. First operand 128 states and 130 transitions. Second operand 19 states. [2020-10-27 14:31:48,315 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 14:31:48,316 INFO L93 Difference]: Finished difference Result 225 states and 230 transitions. [2020-10-27 14:31:48,316 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-10-27 14:31:48,316 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 125 [2020-10-27 14:31:48,317 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 14:31:48,318 INFO L225 Difference]: With dead ends: 225 [2020-10-27 14:31:48,318 INFO L226 Difference]: Without dead ends: 134 [2020-10-27 14:31:48,319 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=155, Invalid=187, Unknown=0, NotChecked=0, Total=342 [2020-10-27 14:31:48,319 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 134 states. [2020-10-27 14:31:48,329 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 134 to 132. [2020-10-27 14:31:48,330 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 132 states. [2020-10-27 14:31:48,330 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 132 states to 132 states and 134 transitions. [2020-10-27 14:31:48,331 INFO L78 Accepts]: Start accepts. Automaton has 132 states and 134 transitions. Word has length 125 [2020-10-27 14:31:48,331 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 14:31:48,331 INFO L481 AbstractCegarLoop]: Abstraction has 132 states and 134 transitions. [2020-10-27 14:31:48,331 INFO L482 AbstractCegarLoop]: Interpolant automaton has 19 states. [2020-10-27 14:31:48,331 INFO L276 IsEmpty]: Start isEmpty. Operand 132 states and 134 transitions. [2020-10-27 14:31:48,332 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 130 [2020-10-27 14:31:48,332 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 14:31:48,333 INFO L422 BasicCegarLoop]: trace histogram [16, 16, 16, 16, 7, 7, 7, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 14:31:48,333 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2020-10-27 14:31:48,333 INFO L429 AbstractCegarLoop]: === Iteration 24 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 14:31:48,333 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 14:31:48,333 INFO L82 PathProgramCache]: Analyzing trace with hash 621241758, now seen corresponding path program 20 times [2020-10-27 14:31:48,334 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 14:31:48,334 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [115695993] [2020-10-27 14:31:48,334 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 14:31:48,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:31:48,369 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:31:48,398 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:31:53,384 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:31:53,384 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 151 [2020-10-27 14:31:53,384 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 14:31:53,384 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5027 [2020-10-27 14:31:53,384 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:31:53,384 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 18 [2020-10-27 14:31:53,384 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 45 [2020-10-27 14:31:53,384 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 34 [2020-10-27 14:31:53,385 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:31:53,676 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 14:31:53,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:31:53,680 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:31:53,681 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:31:53,681 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 14:31:53,681 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:31:53,682 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 14:31:53,682 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:31:53,682 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:31:53,682 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:31:53,682 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:31:53,682 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:31:53,683 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2020-10-27 14:31:53,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:31:53,684 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:31:53,685 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:31:53,685 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:31:53,685 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:31:53,685 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-27 14:31:53,685 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:31:53,685 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:31:53,685 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-27 14:31:53,686 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:31:53,686 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:31:53,686 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-10-27 14:31:53,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:31:53,688 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:31:53,688 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:31:53,689 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:31:53,689 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:31:53,689 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 14:31:53,689 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:31:53,689 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:31:53,689 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-27 14:31:53,689 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:31:53,689 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:31:53,690 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2020-10-27 14:31:53,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:31:53,691 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:31:53,692 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:31:53,692 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:31:53,692 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:31:53,693 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 14:31:53,693 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:31:53,693 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:31:53,693 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-27 14:31:53,693 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:31:53,693 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:31:53,694 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-10-27 14:31:53,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:31:53,696 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:31:53,697 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:31:53,697 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:31:53,697 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:31:53,697 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 14:31:53,697 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:31:53,697 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:31:53,698 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-27 14:31:53,698 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:31:53,698 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:31:53,699 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2020-10-27 14:31:53,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:31:53,700 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:31:53,703 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:31:53,703 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:31:53,704 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:31:53,704 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 14:31:53,704 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:31:53,704 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:31:53,704 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-27 14:31:53,704 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:31:53,704 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:31:53,706 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2020-10-27 14:31:53,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:31:53,707 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:31:53,708 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:31:53,708 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:31:53,708 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:31:53,708 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 14:31:53,708 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:31:53,708 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:31:53,709 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-27 14:31:53,709 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:31:53,709 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:31:53,723 INFO L134 CoverageAnalysis]: Checked inductivity of 656 backedges. 12 proven. 256 refuted. 0 times theorem prover too weak. 388 trivial. 0 not checked. [2020-10-27 14:31:53,724 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [115695993] [2020-10-27 14:31:53,724 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 14:31:53,724 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20] total 20 [2020-10-27 14:31:53,724 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [76114437] [2020-10-27 14:31:53,725 INFO L461 AbstractCegarLoop]: Interpolant automaton has 20 states [2020-10-27 14:31:53,725 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 14:31:53,725 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2020-10-27 14:31:53,726 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=173, Invalid=207, Unknown=0, NotChecked=0, Total=380 [2020-10-27 14:31:53,726 INFO L87 Difference]: Start difference. First operand 132 states and 134 transitions. Second operand 20 states. [2020-10-27 14:31:53,993 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 14:31:53,993 INFO L93 Difference]: Finished difference Result 231 states and 236 transitions. [2020-10-27 14:31:53,994 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2020-10-27 14:31:53,994 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 129 [2020-10-27 14:31:53,994 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 14:31:53,996 INFO L225 Difference]: With dead ends: 231 [2020-10-27 14:31:53,996 INFO L226 Difference]: Without dead ends: 138 [2020-10-27 14:31:53,997 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=173, Invalid=207, Unknown=0, NotChecked=0, Total=380 [2020-10-27 14:31:53,998 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 138 states. [2020-10-27 14:31:54,009 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 138 to 136. [2020-10-27 14:31:54,009 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 136 states. [2020-10-27 14:31:54,010 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 136 states to 136 states and 138 transitions. [2020-10-27 14:31:54,010 INFO L78 Accepts]: Start accepts. Automaton has 136 states and 138 transitions. Word has length 129 [2020-10-27 14:31:54,010 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 14:31:54,010 INFO L481 AbstractCegarLoop]: Abstraction has 136 states and 138 transitions. [2020-10-27 14:31:54,010 INFO L482 AbstractCegarLoop]: Interpolant automaton has 20 states. [2020-10-27 14:31:54,011 INFO L276 IsEmpty]: Start isEmpty. Operand 136 states and 138 transitions. [2020-10-27 14:31:54,012 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 134 [2020-10-27 14:31:54,012 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 14:31:54,012 INFO L422 BasicCegarLoop]: trace histogram [17, 17, 17, 17, 7, 7, 7, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 14:31:54,012 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2020-10-27 14:31:54,012 INFO L429 AbstractCegarLoop]: === Iteration 25 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 14:31:54,013 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 14:31:54,013 INFO L82 PathProgramCache]: Analyzing trace with hash -639549798, now seen corresponding path program 21 times [2020-10-27 14:31:54,013 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 14:31:54,013 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [759626896] [2020-10-27 14:31:54,013 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 14:31:54,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:31:54,063 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:31:54,097 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:31:59,073 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:31:59,073 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 155 [2020-10-27 14:31:59,074 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 14:31:59,074 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5025 [2020-10-27 14:31:59,074 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:31:59,074 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 19 [2020-10-27 14:31:59,074 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 47 [2020-10-27 14:31:59,074 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 36 [2020-10-27 14:31:59,074 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:31:59,407 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 14:31:59,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:31:59,410 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:31:59,411 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:31:59,411 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 14:31:59,412 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:31:59,412 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 14:31:59,412 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:31:59,412 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:31:59,412 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:31:59,412 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:31:59,412 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:31:59,413 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2020-10-27 14:31:59,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:31:59,414 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:31:59,415 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:31:59,415 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:31:59,415 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:31:59,415 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-27 14:31:59,415 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:31:59,416 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:31:59,416 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-27 14:31:59,416 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:31:59,416 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:31:59,417 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2020-10-27 14:31:59,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:31:59,417 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:31:59,418 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:31:59,418 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:31:59,419 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:31:59,419 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-27 14:31:59,419 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:31:59,419 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:31:59,419 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-27 14:31:59,419 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:31:59,419 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:31:59,420 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-10-27 14:31:59,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:31:59,421 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:31:59,424 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:31:59,424 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:31:59,424 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:31:59,424 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 14:31:59,425 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:31:59,425 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:31:59,425 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-27 14:31:59,425 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:31:59,425 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:31:59,426 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2020-10-27 14:31:59,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:31:59,427 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:31:59,428 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:31:59,428 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:31:59,428 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:31:59,429 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 14:31:59,429 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:31:59,429 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:31:59,429 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-27 14:31:59,429 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:31:59,429 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:31:59,430 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2020-10-27 14:31:59,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:31:59,431 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:31:59,432 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:31:59,432 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:31:59,433 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:31:59,433 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 14:31:59,433 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:31:59,433 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:31:59,433 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-27 14:31:59,433 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:31:59,433 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:31:59,434 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2020-10-27 14:31:59,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:31:59,436 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:31:59,437 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:31:59,437 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:31:59,437 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:31:59,437 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 14:31:59,437 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:31:59,437 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:31:59,438 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-27 14:31:59,438 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:31:59,438 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:31:59,453 INFO L134 CoverageAnalysis]: Checked inductivity of 722 backedges. 12 proven. 289 refuted. 0 times theorem prover too weak. 421 trivial. 0 not checked. [2020-10-27 14:31:59,453 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [759626896] [2020-10-27 14:31:59,453 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 14:31:59,454 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21] total 21 [2020-10-27 14:31:59,454 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [300235347] [2020-10-27 14:31:59,454 INFO L461 AbstractCegarLoop]: Interpolant automaton has 21 states [2020-10-27 14:31:59,454 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 14:31:59,455 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2020-10-27 14:31:59,455 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=192, Invalid=228, Unknown=0, NotChecked=0, Total=420 [2020-10-27 14:31:59,455 INFO L87 Difference]: Start difference. First operand 136 states and 138 transitions. Second operand 21 states. [2020-10-27 14:31:59,758 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 14:31:59,758 INFO L93 Difference]: Finished difference Result 237 states and 242 transitions. [2020-10-27 14:31:59,759 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-10-27 14:31:59,759 INFO L78 Accepts]: Start accepts. Automaton has 21 states. Word has length 133 [2020-10-27 14:31:59,759 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 14:31:59,761 INFO L225 Difference]: With dead ends: 237 [2020-10-27 14:31:59,761 INFO L226 Difference]: Without dead ends: 142 [2020-10-27 14:31:59,762 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=192, Invalid=228, Unknown=0, NotChecked=0, Total=420 [2020-10-27 14:31:59,763 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 142 states. [2020-10-27 14:31:59,771 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 142 to 140. [2020-10-27 14:31:59,771 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 140 states. [2020-10-27 14:31:59,772 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 140 states to 140 states and 142 transitions. [2020-10-27 14:31:59,773 INFO L78 Accepts]: Start accepts. Automaton has 140 states and 142 transitions. Word has length 133 [2020-10-27 14:31:59,773 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 14:31:59,773 INFO L481 AbstractCegarLoop]: Abstraction has 140 states and 142 transitions. [2020-10-27 14:31:59,773 INFO L482 AbstractCegarLoop]: Interpolant automaton has 21 states. [2020-10-27 14:31:59,773 INFO L276 IsEmpty]: Start isEmpty. Operand 140 states and 142 transitions. [2020-10-27 14:31:59,774 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 138 [2020-10-27 14:31:59,775 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 14:31:59,775 INFO L422 BasicCegarLoop]: trace histogram [18, 18, 18, 18, 7, 7, 7, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 14:31:59,775 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2020-10-27 14:31:59,775 INFO L429 AbstractCegarLoop]: === Iteration 26 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 14:31:59,775 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 14:31:59,776 INFO L82 PathProgramCache]: Analyzing trace with hash -400873066, now seen corresponding path program 22 times [2020-10-27 14:31:59,776 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 14:31:59,776 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1938392777] [2020-10-27 14:31:59,776 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 14:31:59,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:31:59,818 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:31:59,863 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:32:04,801 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:32:04,801 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 159 [2020-10-27 14:32:04,801 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 14:32:04,801 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4999 [2020-10-27 14:32:04,801 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:32:04,801 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 20 [2020-10-27 14:32:04,802 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 49 [2020-10-27 14:32:04,802 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 38 [2020-10-27 14:32:04,802 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:32:05,148 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 14:32:05,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:32:05,151 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:32:05,153 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:32:05,153 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 14:32:05,153 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:32:05,153 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 14:32:05,154 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:32:05,154 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:32:05,154 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:32:05,154 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:32:05,154 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:32:05,157 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-10-27 14:32:05,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:32:05,158 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:32:05,159 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:32:05,159 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:32:05,159 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:32:05,159 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 14:32:05,159 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:32:05,160 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:32:05,160 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-27 14:32:05,160 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:32:05,160 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:32:05,161 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2020-10-27 14:32:05,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:32:05,162 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:32:05,163 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:32:05,163 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:32:05,163 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:32:05,163 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 14:32:05,163 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:32:05,164 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:32:05,164 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-27 14:32:05,164 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:32:05,164 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:32:05,165 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-10-27 14:32:05,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:32:05,166 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:32:05,167 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:32:05,167 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:32:05,167 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:32:05,167 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 14:32:05,168 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:32:05,168 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:32:05,168 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-27 14:32:05,168 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:32:05,168 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:32:05,169 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2020-10-27 14:32:05,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:32:05,170 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:32:05,171 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:32:05,171 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:32:05,171 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:32:05,171 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-27 14:32:05,171 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:32:05,172 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:32:05,172 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-27 14:32:05,172 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:32:05,172 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:32:05,173 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2020-10-27 14:32:05,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:32:05,174 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:32:05,175 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:32:05,175 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:32:05,175 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:32:05,175 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 14:32:05,175 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:32:05,175 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:32:05,176 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-27 14:32:05,176 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:32:05,176 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:32:05,177 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2020-10-27 14:32:05,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:32:05,178 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:32:05,179 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:32:05,179 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:32:05,179 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:32:05,179 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 14:32:05,179 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:32:05,179 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:32:05,180 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-27 14:32:05,180 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:32:05,180 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:32:05,194 INFO L134 CoverageAnalysis]: Checked inductivity of 792 backedges. 12 proven. 324 refuted. 0 times theorem prover too weak. 456 trivial. 0 not checked. [2020-10-27 14:32:05,195 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1938392777] [2020-10-27 14:32:05,195 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 14:32:05,195 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22] total 22 [2020-10-27 14:32:05,195 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [950836087] [2020-10-27 14:32:05,195 INFO L461 AbstractCegarLoop]: Interpolant automaton has 22 states [2020-10-27 14:32:05,195 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 14:32:05,196 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2020-10-27 14:32:05,196 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=212, Invalid=250, Unknown=0, NotChecked=0, Total=462 [2020-10-27 14:32:05,196 INFO L87 Difference]: Start difference. First operand 140 states and 142 transitions. Second operand 22 states. [2020-10-27 14:32:05,440 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 14:32:05,440 INFO L93 Difference]: Finished difference Result 243 states and 248 transitions. [2020-10-27 14:32:05,441 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2020-10-27 14:32:05,441 INFO L78 Accepts]: Start accepts. Automaton has 22 states. Word has length 137 [2020-10-27 14:32:05,441 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 14:32:05,443 INFO L225 Difference]: With dead ends: 243 [2020-10-27 14:32:05,443 INFO L226 Difference]: Without dead ends: 146 [2020-10-27 14:32:05,444 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=212, Invalid=250, Unknown=0, NotChecked=0, Total=462 [2020-10-27 14:32:05,444 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 146 states. [2020-10-27 14:32:05,452 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 146 to 144. [2020-10-27 14:32:05,453 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 144 states. [2020-10-27 14:32:05,454 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 144 states to 144 states and 146 transitions. [2020-10-27 14:32:05,454 INFO L78 Accepts]: Start accepts. Automaton has 144 states and 146 transitions. Word has length 137 [2020-10-27 14:32:05,454 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 14:32:05,454 INFO L481 AbstractCegarLoop]: Abstraction has 144 states and 146 transitions. [2020-10-27 14:32:05,454 INFO L482 AbstractCegarLoop]: Interpolant automaton has 22 states. [2020-10-27 14:32:05,454 INFO L276 IsEmpty]: Start isEmpty. Operand 144 states and 146 transitions. [2020-10-27 14:32:05,455 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2020-10-27 14:32:05,456 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 14:32:05,456 INFO L422 BasicCegarLoop]: trace histogram [19, 19, 19, 19, 7, 7, 7, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 14:32:05,456 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2020-10-27 14:32:05,456 INFO L429 AbstractCegarLoop]: === Iteration 27 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 14:32:05,456 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 14:32:05,457 INFO L82 PathProgramCache]: Analyzing trace with hash 1172317842, now seen corresponding path program 23 times [2020-10-27 14:32:05,457 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 14:32:05,457 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1387114713] [2020-10-27 14:32:05,457 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 14:32:05,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:32:05,487 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:32:05,523 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:32:10,511 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:32:10,511 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 163 [2020-10-27 14:32:10,511 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 14:32:10,511 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5034 [2020-10-27 14:32:10,511 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:32:10,511 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 21 [2020-10-27 14:32:10,511 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 51 [2020-10-27 14:32:10,512 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 40 [2020-10-27 14:32:10,512 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:32:10,889 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 14:32:10,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:32:10,892 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:32:10,895 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:32:10,895 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 14:32:10,895 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:32:10,895 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 14:32:10,895 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:32:10,895 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:32:10,895 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:32:10,896 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:32:10,896 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:32:10,897 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2020-10-27 14:32:10,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:32:10,898 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:32:10,898 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:32:10,899 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:32:10,899 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:32:10,899 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-27 14:32:10,899 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:32:10,899 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:32:10,899 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-27 14:32:10,899 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:32:10,899 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:32:10,900 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-10-27 14:32:10,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:32:10,901 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:32:10,902 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:32:10,902 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:32:10,902 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:32:10,902 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 14:32:10,902 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:32:10,903 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:32:10,903 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-27 14:32:10,903 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:32:10,903 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:32:10,904 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2020-10-27 14:32:10,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:32:10,905 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:32:10,906 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:32:10,906 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:32:10,906 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:32:10,907 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 14:32:10,907 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:32:10,907 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:32:10,907 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-27 14:32:10,907 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:32:10,907 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:32:10,908 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2020-10-27 14:32:10,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:32:10,910 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:32:10,911 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:32:10,911 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:32:10,911 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:32:10,911 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 14:32:10,912 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:32:10,912 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:32:10,912 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-27 14:32:10,912 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:32:10,912 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:32:10,913 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2020-10-27 14:32:10,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:32:10,915 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:32:10,916 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:32:10,916 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:32:10,916 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:32:10,916 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 14:32:10,916 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:32:10,917 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:32:10,917 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-27 14:32:10,917 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:32:10,917 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:32:10,918 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2020-10-27 14:32:10,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:32:10,920 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:32:10,921 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:32:10,921 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:32:10,921 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:32:10,921 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 14:32:10,921 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:32:10,922 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:32:10,922 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-27 14:32:10,922 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:32:10,922 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:32:10,939 INFO L134 CoverageAnalysis]: Checked inductivity of 866 backedges. 12 proven. 361 refuted. 0 times theorem prover too weak. 493 trivial. 0 not checked. [2020-10-27 14:32:10,940 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1387114713] [2020-10-27 14:32:10,940 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 14:32:10,940 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23] total 23 [2020-10-27 14:32:10,940 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2106712230] [2020-10-27 14:32:10,941 INFO L461 AbstractCegarLoop]: Interpolant automaton has 23 states [2020-10-27 14:32:10,941 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 14:32:10,941 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2020-10-27 14:32:10,942 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=233, Invalid=273, Unknown=0, NotChecked=0, Total=506 [2020-10-27 14:32:10,942 INFO L87 Difference]: Start difference. First operand 144 states and 146 transitions. Second operand 23 states. [2020-10-27 14:32:11,210 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 14:32:11,210 INFO L93 Difference]: Finished difference Result 249 states and 254 transitions. [2020-10-27 14:32:11,211 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2020-10-27 14:32:11,211 INFO L78 Accepts]: Start accepts. Automaton has 23 states. Word has length 141 [2020-10-27 14:32:11,211 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 14:32:11,212 INFO L225 Difference]: With dead ends: 249 [2020-10-27 14:32:11,212 INFO L226 Difference]: Without dead ends: 150 [2020-10-27 14:32:11,213 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=233, Invalid=273, Unknown=0, NotChecked=0, Total=506 [2020-10-27 14:32:11,213 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 150 states. [2020-10-27 14:32:11,222 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 150 to 148. [2020-10-27 14:32:11,223 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 148 states. [2020-10-27 14:32:11,224 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 148 states to 148 states and 150 transitions. [2020-10-27 14:32:11,224 INFO L78 Accepts]: Start accepts. Automaton has 148 states and 150 transitions. Word has length 141 [2020-10-27 14:32:11,224 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 14:32:11,224 INFO L481 AbstractCegarLoop]: Abstraction has 148 states and 150 transitions. [2020-10-27 14:32:11,224 INFO L482 AbstractCegarLoop]: Interpolant automaton has 23 states. [2020-10-27 14:32:11,225 INFO L276 IsEmpty]: Start isEmpty. Operand 148 states and 150 transitions. [2020-10-27 14:32:11,225 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2020-10-27 14:32:11,226 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 14:32:11,226 INFO L422 BasicCegarLoop]: trace histogram [20, 20, 20, 20, 7, 7, 7, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 14:32:11,226 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2020-10-27 14:32:11,226 INFO L429 AbstractCegarLoop]: === Iteration 28 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 14:32:11,226 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 14:32:11,227 INFO L82 PathProgramCache]: Analyzing trace with hash -891603570, now seen corresponding path program 24 times [2020-10-27 14:32:11,227 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 14:32:11,227 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [653652535] [2020-10-27 14:32:11,227 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 14:32:11,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:32:11,274 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:32:11,334 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:32:16,264 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:32:16,264 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 167 [2020-10-27 14:32:16,264 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 14:32:16,264 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5009 [2020-10-27 14:32:16,265 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:32:16,265 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 22 [2020-10-27 14:32:16,265 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 53 [2020-10-27 14:32:16,265 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 42 [2020-10-27 14:32:16,265 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:32:16,695 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 14:32:16,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:32:16,697 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:32:16,699 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:32:16,699 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 14:32:16,700 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:32:16,700 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 14:32:16,700 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:32:16,700 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:32:16,700 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:32:16,700 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:32:16,700 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:32:16,701 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2020-10-27 14:32:16,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:32:16,702 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:32:16,703 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:32:16,703 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:32:16,703 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:32:16,703 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-27 14:32:16,703 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:32:16,703 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:32:16,703 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-27 14:32:16,704 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:32:16,704 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:32:16,704 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-10-27 14:32:16,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:32:16,705 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:32:16,706 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:32:16,706 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:32:16,706 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:32:16,706 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-27 14:32:16,706 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:32:16,706 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:32:16,706 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-27 14:32:16,706 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:32:16,707 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:32:16,707 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2020-10-27 14:32:16,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:32:16,708 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:32:16,709 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:32:16,709 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:32:16,709 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:32:16,709 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-27 14:32:16,709 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:32:16,709 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:32:16,709 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-27 14:32:16,710 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:32:16,710 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:32:16,710 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2020-10-27 14:32:16,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:32:16,711 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:32:16,712 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:32:16,712 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:32:16,712 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:32:16,712 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-27 14:32:16,712 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:32:16,712 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:32:16,713 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-27 14:32:16,713 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:32:16,713 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:32:16,713 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2020-10-27 14:32:16,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:32:16,714 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:32:16,715 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:32:16,715 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:32:16,715 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:32:16,715 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-27 14:32:16,715 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:32:16,715 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:32:16,716 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-27 14:32:16,716 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:32:16,716 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:32:16,716 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2020-10-27 14:32:16,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:32:16,717 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:32:16,718 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:32:16,718 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:32:16,718 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:32:16,718 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-27 14:32:16,718 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:32:16,719 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:32:16,719 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-27 14:32:16,719 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:32:16,719 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:32:16,732 INFO L134 CoverageAnalysis]: Checked inductivity of 944 backedges. 12 proven. 400 refuted. 0 times theorem prover too weak. 532 trivial. 0 not checked. [2020-10-27 14:32:16,732 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [653652535] [2020-10-27 14:32:16,732 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 14:32:16,732 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24] total 24 [2020-10-27 14:32:16,733 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1500824680] [2020-10-27 14:32:16,733 INFO L461 AbstractCegarLoop]: Interpolant automaton has 24 states [2020-10-27 14:32:16,733 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 14:32:16,733 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2020-10-27 14:32:16,734 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=255, Invalid=297, Unknown=0, NotChecked=0, Total=552 [2020-10-27 14:32:16,734 INFO L87 Difference]: Start difference. First operand 148 states and 150 transitions. Second operand 24 states. [2020-10-27 14:32:17,084 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 14:32:17,084 INFO L93 Difference]: Finished difference Result 255 states and 260 transitions. [2020-10-27 14:32:17,085 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2020-10-27 14:32:17,086 INFO L78 Accepts]: Start accepts. Automaton has 24 states. Word has length 145 [2020-10-27 14:32:17,087 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 14:32:17,088 INFO L225 Difference]: With dead ends: 255 [2020-10-27 14:32:17,089 INFO L226 Difference]: Without dead ends: 154 [2020-10-27 14:32:17,089 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=255, Invalid=297, Unknown=0, NotChecked=0, Total=552 [2020-10-27 14:32:17,090 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 154 states. [2020-10-27 14:32:17,102 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 154 to 152. [2020-10-27 14:32:17,103 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 152 states. [2020-10-27 14:32:17,104 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 152 states to 152 states and 154 transitions. [2020-10-27 14:32:17,104 INFO L78 Accepts]: Start accepts. Automaton has 152 states and 154 transitions. Word has length 145 [2020-10-27 14:32:17,105 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 14:32:17,105 INFO L481 AbstractCegarLoop]: Abstraction has 152 states and 154 transitions. [2020-10-27 14:32:17,105 INFO L482 AbstractCegarLoop]: Interpolant automaton has 24 states. [2020-10-27 14:32:17,105 INFO L276 IsEmpty]: Start isEmpty. Operand 152 states and 154 transitions. [2020-10-27 14:32:17,106 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 150 [2020-10-27 14:32:17,106 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 14:32:17,106 INFO L422 BasicCegarLoop]: trace histogram [21, 21, 21, 21, 7, 7, 7, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 14:32:17,106 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2020-10-27 14:32:17,107 INFO L429 AbstractCegarLoop]: === Iteration 29 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 14:32:17,107 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 14:32:17,107 INFO L82 PathProgramCache]: Analyzing trace with hash -1338550646, now seen corresponding path program 25 times [2020-10-27 14:32:17,107 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 14:32:17,107 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1400259806] [2020-10-27 14:32:17,108 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 14:32:17,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:32:17,163 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:32:17,227 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:32:22,156 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:32:22,156 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 171 [2020-10-27 14:32:22,156 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 14:32:22,156 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5017 [2020-10-27 14:32:22,156 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:32:22,157 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 23 [2020-10-27 14:32:22,157 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 55 [2020-10-27 14:32:22,157 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 44 [2020-10-27 14:32:22,157 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:32:22,584 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 14:32:22,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:32:22,587 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:32:22,590 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:32:22,590 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 14:32:22,590 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:32:22,590 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 14:32:22,590 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:32:22,590 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:32:22,591 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:32:22,591 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:32:22,591 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:32:22,593 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-10-27 14:32:22,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:32:22,594 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:32:22,595 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:32:22,595 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:32:22,595 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:32:22,595 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 14:32:22,595 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:32:22,595 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:32:22,596 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-27 14:32:22,596 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:32:22,596 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:32:22,597 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2020-10-27 14:32:22,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:32:22,598 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:32:22,598 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:32:22,598 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:32:22,598 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:32:22,598 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-27 14:32:22,599 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:32:22,599 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:32:22,599 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-27 14:32:22,599 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:32:22,599 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:32:22,600 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2020-10-27 14:32:22,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:32:22,601 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:32:22,601 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:32:22,601 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:32:22,602 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:32:22,602 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-27 14:32:22,602 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:32:22,602 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:32:22,602 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-27 14:32:22,602 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:32:22,602 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:32:22,603 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2020-10-27 14:32:22,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:32:22,604 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:32:22,605 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:32:22,605 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:32:22,605 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:32:22,605 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 14:32:22,605 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:32:22,606 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:32:22,606 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-27 14:32:22,606 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:32:22,606 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:32:22,607 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2020-10-27 14:32:22,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:32:22,608 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:32:22,609 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:32:22,609 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:32:22,609 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:32:22,609 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-27 14:32:22,609 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:32:22,609 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:32:22,609 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-27 14:32:22,609 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:32:22,609 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:32:22,610 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2020-10-27 14:32:22,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:32:22,611 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:32:22,612 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:32:22,612 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:32:22,612 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:32:22,612 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 14:32:22,613 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:32:22,613 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:32:22,613 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-27 14:32:22,613 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:32:22,613 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:32:22,632 INFO L134 CoverageAnalysis]: Checked inductivity of 1026 backedges. 12 proven. 441 refuted. 0 times theorem prover too weak. 573 trivial. 0 not checked. [2020-10-27 14:32:22,633 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1400259806] [2020-10-27 14:32:22,633 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 14:32:22,633 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25] total 25 [2020-10-27 14:32:22,633 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [705559266] [2020-10-27 14:32:22,634 INFO L461 AbstractCegarLoop]: Interpolant automaton has 25 states [2020-10-27 14:32:22,634 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 14:32:22,634 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2020-10-27 14:32:22,635 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=278, Invalid=322, Unknown=0, NotChecked=0, Total=600 [2020-10-27 14:32:22,635 INFO L87 Difference]: Start difference. First operand 152 states and 154 transitions. Second operand 25 states. [2020-10-27 14:32:22,905 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 14:32:22,905 INFO L93 Difference]: Finished difference Result 261 states and 266 transitions. [2020-10-27 14:32:22,906 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2020-10-27 14:32:22,906 INFO L78 Accepts]: Start accepts. Automaton has 25 states. Word has length 149 [2020-10-27 14:32:22,907 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 14:32:22,908 INFO L225 Difference]: With dead ends: 261 [2020-10-27 14:32:22,908 INFO L226 Difference]: Without dead ends: 158 [2020-10-27 14:32:22,909 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=278, Invalid=322, Unknown=0, NotChecked=0, Total=600 [2020-10-27 14:32:22,909 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 158 states. [2020-10-27 14:32:22,918 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 158 to 156. [2020-10-27 14:32:22,918 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 156 states. [2020-10-27 14:32:22,919 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 156 states to 156 states and 158 transitions. [2020-10-27 14:32:22,919 INFO L78 Accepts]: Start accepts. Automaton has 156 states and 158 transitions. Word has length 149 [2020-10-27 14:32:22,920 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 14:32:22,920 INFO L481 AbstractCegarLoop]: Abstraction has 156 states and 158 transitions. [2020-10-27 14:32:22,920 INFO L482 AbstractCegarLoop]: Interpolant automaton has 25 states. [2020-10-27 14:32:22,920 INFO L276 IsEmpty]: Start isEmpty. Operand 156 states and 158 transitions. [2020-10-27 14:32:22,921 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 154 [2020-10-27 14:32:22,921 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 14:32:22,921 INFO L422 BasicCegarLoop]: trace histogram [22, 22, 22, 22, 7, 7, 7, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 14:32:22,921 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2020-10-27 14:32:22,922 INFO L429 AbstractCegarLoop]: === Iteration 30 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 14:32:22,922 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 14:32:22,922 INFO L82 PathProgramCache]: Analyzing trace with hash 278890886, now seen corresponding path program 26 times [2020-10-27 14:32:22,922 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 14:32:22,922 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1453934359] [2020-10-27 14:32:22,922 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 14:32:22,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:32:22,972 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:32:23,041 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:32:27,998 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:32:27,998 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 175 [2020-10-27 14:32:27,998 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 14:32:27,998 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5047 [2020-10-27 14:32:27,998 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:32:27,998 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 24 [2020-10-27 14:32:27,998 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 57 [2020-10-27 14:32:27,999 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 46 [2020-10-27 14:32:27,999 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:32:28,464 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 14:32:28,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:32:28,466 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:32:28,469 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:32:28,469 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 14:32:28,469 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:32:28,469 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 14:32:28,469 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:32:28,469 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:32:28,469 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:32:28,469 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:32:28,470 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:32:28,471 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-10-27 14:32:28,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:32:28,472 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:32:28,473 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:32:28,473 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:32:28,473 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:32:28,473 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 14:32:28,473 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:32:28,473 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:32:28,473 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-27 14:32:28,473 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:32:28,474 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:32:28,474 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2020-10-27 14:32:28,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:32:28,475 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:32:28,476 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:32:28,476 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:32:28,476 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:32:28,476 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-27 14:32:28,476 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:32:28,476 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:32:28,476 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-27 14:32:28,476 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:32:28,477 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:32:28,477 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2020-10-27 14:32:28,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:32:28,478 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:32:28,479 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:32:28,479 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:32:28,479 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:32:28,479 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-27 14:32:28,479 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:32:28,479 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:32:28,479 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-27 14:32:28,479 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:32:28,479 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:32:28,480 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2020-10-27 14:32:28,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:32:28,481 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:32:28,482 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:32:28,483 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:32:28,483 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:32:28,483 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 14:32:28,483 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:32:28,483 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:32:28,483 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-27 14:32:28,484 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:32:28,484 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:32:28,485 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2020-10-27 14:32:28,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:32:28,486 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:32:28,487 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:32:28,487 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:32:28,487 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:32:28,487 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-27 14:32:28,487 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:32:28,487 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:32:28,487 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-27 14:32:28,487 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:32:28,487 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:32:28,488 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2020-10-27 14:32:28,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:32:28,489 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:32:28,490 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:32:28,490 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:32:28,490 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:32:28,490 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-27 14:32:28,490 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:32:28,490 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:32:28,491 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-27 14:32:28,491 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:32:28,491 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:32:28,511 INFO L134 CoverageAnalysis]: Checked inductivity of 1112 backedges. 12 proven. 484 refuted. 0 times theorem prover too weak. 616 trivial. 0 not checked. [2020-10-27 14:32:28,512 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1453934359] [2020-10-27 14:32:28,512 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 14:32:28,512 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [26] total 26 [2020-10-27 14:32:28,512 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1136795878] [2020-10-27 14:32:28,513 INFO L461 AbstractCegarLoop]: Interpolant automaton has 26 states [2020-10-27 14:32:28,513 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 14:32:28,513 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2020-10-27 14:32:28,514 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=302, Invalid=348, Unknown=0, NotChecked=0, Total=650 [2020-10-27 14:32:28,514 INFO L87 Difference]: Start difference. First operand 156 states and 158 transitions. Second operand 26 states. [2020-10-27 14:32:28,912 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 14:32:28,912 INFO L93 Difference]: Finished difference Result 267 states and 272 transitions. [2020-10-27 14:32:28,913 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2020-10-27 14:32:28,913 INFO L78 Accepts]: Start accepts. Automaton has 26 states. Word has length 153 [2020-10-27 14:32:28,913 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 14:32:28,915 INFO L225 Difference]: With dead ends: 267 [2020-10-27 14:32:28,915 INFO L226 Difference]: Without dead ends: 162 [2020-10-27 14:32:28,916 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=302, Invalid=348, Unknown=0, NotChecked=0, Total=650 [2020-10-27 14:32:28,917 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 162 states. [2020-10-27 14:32:28,926 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 162 to 160. [2020-10-27 14:32:28,926 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 160 states. [2020-10-27 14:32:28,928 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 160 states to 160 states and 162 transitions. [2020-10-27 14:32:28,928 INFO L78 Accepts]: Start accepts. Automaton has 160 states and 162 transitions. Word has length 153 [2020-10-27 14:32:28,928 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 14:32:28,928 INFO L481 AbstractCegarLoop]: Abstraction has 160 states and 162 transitions. [2020-10-27 14:32:28,928 INFO L482 AbstractCegarLoop]: Interpolant automaton has 26 states. [2020-10-27 14:32:28,928 INFO L276 IsEmpty]: Start isEmpty. Operand 160 states and 162 transitions. [2020-10-27 14:32:28,930 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 158 [2020-10-27 14:32:28,930 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 14:32:28,930 INFO L422 BasicCegarLoop]: trace histogram [23, 23, 23, 23, 7, 7, 7, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 14:32:28,930 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2020-10-27 14:32:28,930 INFO L429 AbstractCegarLoop]: === Iteration 31 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 14:32:28,931 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 14:32:28,931 INFO L82 PathProgramCache]: Analyzing trace with hash 1748946562, now seen corresponding path program 27 times [2020-10-27 14:32:28,931 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 14:32:28,931 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1592201205] [2020-10-27 14:32:28,931 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 14:32:28,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:32:28,987 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:32:29,064 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:32:33,961 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:32:33,962 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 179 [2020-10-27 14:32:33,962 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 14:32:33,962 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4999 [2020-10-27 14:32:33,962 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:32:33,962 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 25 [2020-10-27 14:32:33,962 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 59 [2020-10-27 14:32:33,962 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 48 [2020-10-27 14:32:33,962 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:32:34,503 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 14:32:34,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:32:34,505 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:32:34,507 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:32:34,507 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 14:32:34,507 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:32:34,507 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 14:32:34,508 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:32:34,508 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:32:34,508 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:32:34,508 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:32:34,508 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:32:34,510 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2020-10-27 14:32:34,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:32:34,511 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:32:34,512 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:32:34,512 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:32:34,512 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:32:34,512 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 14:32:34,512 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:32:34,512 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:32:34,512 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-27 14:32:34,513 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:32:34,513 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:32:34,514 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2020-10-27 14:32:34,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:32:34,515 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:32:34,516 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:32:34,516 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:32:34,516 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:32:34,516 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 14:32:34,516 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:32:34,516 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:32:34,517 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-27 14:32:34,517 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:32:34,517 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:32:34,518 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2020-10-27 14:32:34,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:32:34,519 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:32:34,520 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:32:34,520 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:32:34,520 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:32:34,520 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 14:32:34,521 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:32:34,521 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:32:34,521 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-27 14:32:34,521 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:32:34,521 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:32:34,522 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2020-10-27 14:32:34,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:32:34,524 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:32:34,525 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:32:34,525 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:32:34,525 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:32:34,525 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 14:32:34,525 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:32:34,526 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:32:34,526 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-27 14:32:34,526 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:32:34,526 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:32:34,528 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2020-10-27 14:32:34,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:32:34,530 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:32:34,530 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:32:34,531 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:32:34,531 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:32:34,531 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 14:32:34,531 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:32:34,531 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:32:34,531 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-27 14:32:34,531 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:32:34,532 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:32:34,532 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2020-10-27 14:32:34,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:32:34,534 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:32:34,534 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:32:34,535 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:32:34,535 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:32:34,535 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 14:32:34,535 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:32:34,535 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:32:34,535 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-27 14:32:34,535 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:32:34,536 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:32:34,557 INFO L134 CoverageAnalysis]: Checked inductivity of 1202 backedges. 12 proven. 529 refuted. 0 times theorem prover too weak. 661 trivial. 0 not checked. [2020-10-27 14:32:34,557 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1592201205] [2020-10-27 14:32:34,557 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 14:32:34,558 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [27] total 27 [2020-10-27 14:32:34,558 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [924993805] [2020-10-27 14:32:34,558 INFO L461 AbstractCegarLoop]: Interpolant automaton has 27 states [2020-10-27 14:32:34,558 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 14:32:34,559 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2020-10-27 14:32:34,559 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=327, Invalid=375, Unknown=0, NotChecked=0, Total=702 [2020-10-27 14:32:34,559 INFO L87 Difference]: Start difference. First operand 160 states and 162 transitions. Second operand 27 states. [2020-10-27 14:32:34,990 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 14:32:34,990 INFO L93 Difference]: Finished difference Result 273 states and 278 transitions. [2020-10-27 14:32:34,991 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2020-10-27 14:32:34,991 INFO L78 Accepts]: Start accepts. Automaton has 27 states. Word has length 157 [2020-10-27 14:32:34,992 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 14:32:34,993 INFO L225 Difference]: With dead ends: 273 [2020-10-27 14:32:34,993 INFO L226 Difference]: Without dead ends: 166 [2020-10-27 14:32:34,994 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=327, Invalid=375, Unknown=0, NotChecked=0, Total=702 [2020-10-27 14:32:34,994 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 166 states. [2020-10-27 14:32:35,003 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 166 to 164. [2020-10-27 14:32:35,003 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 164 states. [2020-10-27 14:32:35,004 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 164 states to 164 states and 166 transitions. [2020-10-27 14:32:35,005 INFO L78 Accepts]: Start accepts. Automaton has 164 states and 166 transitions. Word has length 157 [2020-10-27 14:32:35,005 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 14:32:35,005 INFO L481 AbstractCegarLoop]: Abstraction has 164 states and 166 transitions. [2020-10-27 14:32:35,005 INFO L482 AbstractCegarLoop]: Interpolant automaton has 27 states. [2020-10-27 14:32:35,005 INFO L276 IsEmpty]: Start isEmpty. Operand 164 states and 166 transitions. [2020-10-27 14:32:35,006 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 162 [2020-10-27 14:32:35,006 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 14:32:35,007 INFO L422 BasicCegarLoop]: trace histogram [24, 24, 24, 24, 7, 7, 7, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 14:32:35,007 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2020-10-27 14:32:35,007 INFO L429 AbstractCegarLoop]: === Iteration 32 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 14:32:35,007 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 14:32:35,007 INFO L82 PathProgramCache]: Analyzing trace with hash 348136830, now seen corresponding path program 28 times [2020-10-27 14:32:35,008 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 14:32:35,008 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [592695590] [2020-10-27 14:32:35,008 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 14:32:35,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:32:35,060 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:32:35,125 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:32:40,088 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:32:40,088 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 183 [2020-10-27 14:32:40,088 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 14:32:40,088 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5050 [2020-10-27 14:32:40,088 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:32:40,088 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 26 [2020-10-27 14:32:40,088 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 61 [2020-10-27 14:32:40,089 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 50 [2020-10-27 14:32:40,089 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:32:40,630 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 14:32:40,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:32:40,635 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:32:40,637 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:32:40,637 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 14:32:40,637 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:32:40,637 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 14:32:40,638 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:32:40,638 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:32:40,638 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:32:40,638 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:32:40,638 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:32:40,640 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2020-10-27 14:32:40,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:32:40,643 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:32:40,643 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:32:40,643 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:32:40,644 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:32:40,644 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 14:32:40,644 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:32:40,644 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:32:40,644 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-27 14:32:40,644 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:32:40,644 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:32:40,645 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2020-10-27 14:32:40,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:32:40,647 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:32:40,647 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:32:40,647 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:32:40,648 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:32:40,648 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 14:32:40,648 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:32:40,648 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:32:40,648 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-27 14:32:40,648 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:32:40,648 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:32:40,649 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2020-10-27 14:32:40,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:32:40,650 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:32:40,651 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:32:40,651 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:32:40,651 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:32:40,652 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 14:32:40,652 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:32:40,652 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:32:40,652 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-27 14:32:40,652 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:32:40,652 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:32:40,653 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2020-10-27 14:32:40,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:32:40,655 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:32:40,655 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:32:40,656 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:32:40,656 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:32:40,656 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 14:32:40,656 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:32:40,656 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:32:40,656 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-27 14:32:40,656 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:32:40,657 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:32:40,657 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2020-10-27 14:32:40,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:32:40,659 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:32:40,660 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:32:40,660 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:32:40,660 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:32:40,660 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 14:32:40,660 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:32:40,660 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:32:40,661 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-27 14:32:40,661 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:32:40,661 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:32:40,662 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 147 [2020-10-27 14:32:40,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:32:40,663 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:32:40,664 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:32:40,664 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:32:40,664 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:32:40,664 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 14:32:40,665 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:32:40,665 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:32:40,665 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-27 14:32:40,665 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:32:40,665 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:32:40,689 INFO L134 CoverageAnalysis]: Checked inductivity of 1296 backedges. 12 proven. 576 refuted. 0 times theorem prover too weak. 708 trivial. 0 not checked. [2020-10-27 14:32:40,689 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [592695590] [2020-10-27 14:32:40,690 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 14:32:40,690 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [28] total 28 [2020-10-27 14:32:40,690 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1681253017] [2020-10-27 14:32:40,690 INFO L461 AbstractCegarLoop]: Interpolant automaton has 28 states [2020-10-27 14:32:40,691 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 14:32:40,691 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2020-10-27 14:32:40,691 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=353, Invalid=403, Unknown=0, NotChecked=0, Total=756 [2020-10-27 14:32:40,692 INFO L87 Difference]: Start difference. First operand 164 states and 166 transitions. Second operand 28 states. [2020-10-27 14:32:41,141 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 14:32:41,141 INFO L93 Difference]: Finished difference Result 279 states and 284 transitions. [2020-10-27 14:32:41,142 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2020-10-27 14:32:41,142 INFO L78 Accepts]: Start accepts. Automaton has 28 states. Word has length 161 [2020-10-27 14:32:41,142 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 14:32:41,144 INFO L225 Difference]: With dead ends: 279 [2020-10-27 14:32:41,144 INFO L226 Difference]: Without dead ends: 170 [2020-10-27 14:32:41,145 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=353, Invalid=403, Unknown=0, NotChecked=0, Total=756 [2020-10-27 14:32:41,145 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 170 states. [2020-10-27 14:32:41,162 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 170 to 168. [2020-10-27 14:32:41,163 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 168 states. [2020-10-27 14:32:41,164 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 168 states to 168 states and 170 transitions. [2020-10-27 14:32:41,165 INFO L78 Accepts]: Start accepts. Automaton has 168 states and 170 transitions. Word has length 161 [2020-10-27 14:32:41,165 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 14:32:41,166 INFO L481 AbstractCegarLoop]: Abstraction has 168 states and 170 transitions. [2020-10-27 14:32:41,166 INFO L482 AbstractCegarLoop]: Interpolant automaton has 28 states. [2020-10-27 14:32:41,166 INFO L276 IsEmpty]: Start isEmpty. Operand 168 states and 170 transitions. [2020-10-27 14:32:41,167 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 166 [2020-10-27 14:32:41,167 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 14:32:41,167 INFO L422 BasicCegarLoop]: trace histogram [25, 25, 25, 25, 7, 7, 7, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 14:32:41,168 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2020-10-27 14:32:41,168 INFO L429 AbstractCegarLoop]: === Iteration 33 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 14:32:41,168 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 14:32:41,168 INFO L82 PathProgramCache]: Analyzing trace with hash -716272006, now seen corresponding path program 29 times [2020-10-27 14:32:41,168 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 14:32:41,169 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [406132866] [2020-10-27 14:32:41,169 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 14:32:41,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:32:41,225 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:32:41,318 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:32:46,271 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:32:46,271 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 187 [2020-10-27 14:32:46,271 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 14:32:46,271 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5069 [2020-10-27 14:32:46,271 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:32:46,272 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 27 [2020-10-27 14:32:46,272 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 63 [2020-10-27 14:32:46,272 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 52 [2020-10-27 14:32:46,272 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:32:46,843 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 14:32:46,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:32:46,846 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:32:46,848 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:32:46,848 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 14:32:46,848 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:32:46,848 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 14:32:46,848 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:32:46,848 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:32:46,848 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:32:46,849 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:32:46,849 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:32:46,850 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2020-10-27 14:32:46,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:32:46,851 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:32:46,851 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:32:46,852 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:32:46,852 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:32:46,852 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-27 14:32:46,852 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:32:46,852 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:32:46,852 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-27 14:32:46,852 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:32:46,852 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:32:46,853 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2020-10-27 14:32:46,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:32:46,854 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:32:46,855 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:32:46,855 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:32:46,855 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:32:46,855 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-27 14:32:46,855 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:32:46,855 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:32:46,856 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-27 14:32:46,856 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:32:46,856 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:32:46,856 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2020-10-27 14:32:46,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:32:46,858 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:32:46,858 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:32:46,859 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:32:46,859 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:32:46,859 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 14:32:46,859 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:32:46,859 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:32:46,859 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-27 14:32:46,859 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:32:46,859 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:32:46,860 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2020-10-27 14:32:46,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:32:46,861 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:32:46,862 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:32:46,862 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:32:46,862 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:32:46,862 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-27 14:32:46,862 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:32:46,862 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:32:46,862 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-27 14:32:46,862 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:32:46,863 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:32:46,863 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2020-10-27 14:32:46,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:32:46,864 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:32:46,865 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:32:46,865 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:32:46,865 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:32:46,865 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-27 14:32:46,865 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:32:46,865 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:32:46,866 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-27 14:32:46,866 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:32:46,866 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:32:46,866 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 151 [2020-10-27 14:32:46,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:32:46,867 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:32:46,868 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:32:46,868 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:32:46,868 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:32:46,868 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-27 14:32:46,868 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:32:46,869 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:32:46,869 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-27 14:32:46,869 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:32:46,869 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:32:46,885 INFO L134 CoverageAnalysis]: Checked inductivity of 1394 backedges. 12 proven. 625 refuted. 0 times theorem prover too weak. 757 trivial. 0 not checked. [2020-10-27 14:32:46,885 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [406132866] [2020-10-27 14:32:46,886 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 14:32:46,886 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [29] total 29 [2020-10-27 14:32:46,886 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1243225923] [2020-10-27 14:32:46,886 INFO L461 AbstractCegarLoop]: Interpolant automaton has 29 states [2020-10-27 14:32:46,886 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 14:32:46,887 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2020-10-27 14:32:46,887 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=380, Invalid=432, Unknown=0, NotChecked=0, Total=812 [2020-10-27 14:32:46,887 INFO L87 Difference]: Start difference. First operand 168 states and 170 transitions. Second operand 29 states. [2020-10-27 14:32:47,340 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 14:32:47,341 INFO L93 Difference]: Finished difference Result 285 states and 290 transitions. [2020-10-27 14:32:47,341 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-10-27 14:32:47,341 INFO L78 Accepts]: Start accepts. Automaton has 29 states. Word has length 165 [2020-10-27 14:32:47,342 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 14:32:47,343 INFO L225 Difference]: With dead ends: 285 [2020-10-27 14:32:47,343 INFO L226 Difference]: Without dead ends: 174 [2020-10-27 14:32:47,344 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=380, Invalid=432, Unknown=0, NotChecked=0, Total=812 [2020-10-27 14:32:47,345 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 174 states. [2020-10-27 14:32:47,353 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 174 to 172. [2020-10-27 14:32:47,354 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 172 states. [2020-10-27 14:32:47,355 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 172 states to 172 states and 174 transitions. [2020-10-27 14:32:47,355 INFO L78 Accepts]: Start accepts. Automaton has 172 states and 174 transitions. Word has length 165 [2020-10-27 14:32:47,355 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 14:32:47,355 INFO L481 AbstractCegarLoop]: Abstraction has 172 states and 174 transitions. [2020-10-27 14:32:47,355 INFO L482 AbstractCegarLoop]: Interpolant automaton has 29 states. [2020-10-27 14:32:47,355 INFO L276 IsEmpty]: Start isEmpty. Operand 172 states and 174 transitions. [2020-10-27 14:32:47,356 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 170 [2020-10-27 14:32:47,356 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 14:32:47,357 INFO L422 BasicCegarLoop]: trace histogram [26, 26, 26, 26, 7, 7, 7, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 14:32:47,357 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2020-10-27 14:32:47,357 INFO L429 AbstractCegarLoop]: === Iteration 34 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 14:32:47,357 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 14:32:47,357 INFO L82 PathProgramCache]: Analyzing trace with hash 1251281270, now seen corresponding path program 30 times [2020-10-27 14:32:47,358 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 14:32:47,358 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [159928403] [2020-10-27 14:32:47,358 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 14:32:47,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:32:47,404 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:32:47,454 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:32:52,438 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:32:52,438 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 191 [2020-10-27 14:32:52,439 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 14:32:52,439 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5051 [2020-10-27 14:32:52,439 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:32:52,439 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 28 [2020-10-27 14:32:52,439 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 65 [2020-10-27 14:32:52,439 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 54 [2020-10-27 14:32:52,439 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:32:53,073 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 14:32:53,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:32:53,075 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:32:53,077 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:32:53,078 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 14:32:53,078 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:32:53,078 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 14:32:53,078 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:32:53,078 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:32:53,078 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:32:53,078 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:32:53,079 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:32:53,080 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2020-10-27 14:32:53,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:32:53,082 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:32:53,082 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:32:53,083 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:32:53,083 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:32:53,083 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 14:32:53,083 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:32:53,083 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:32:53,083 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-27 14:32:53,083 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:32:53,084 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:32:53,084 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2020-10-27 14:32:53,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:32:53,086 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:32:53,086 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:32:53,087 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:32:53,087 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:32:53,087 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 14:32:53,087 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:32:53,087 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:32:53,087 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-27 14:32:53,087 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:32:53,088 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:32:53,088 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2020-10-27 14:32:53,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:32:53,090 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:32:53,090 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:32:53,090 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:32:53,091 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:32:53,091 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 14:32:53,091 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:32:53,091 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:32:53,091 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-27 14:32:53,091 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:32:53,091 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:32:53,092 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2020-10-27 14:32:53,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:32:53,093 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:32:53,094 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:32:53,094 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:32:53,095 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:32:53,095 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 14:32:53,095 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:32:53,095 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:32:53,095 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-27 14:32:53,095 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:32:53,095 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:32:53,096 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 147 [2020-10-27 14:32:53,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:32:53,097 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:32:53,098 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:32:53,099 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:32:53,099 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:32:53,099 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 14:32:53,099 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:32:53,099 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:32:53,099 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-27 14:32:53,099 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:32:53,100 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:32:53,101 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 155 [2020-10-27 14:32:53,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:32:53,102 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:32:53,103 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:32:53,103 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:32:53,103 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:32:53,103 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 14:32:53,103 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:32:53,104 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:32:53,104 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-27 14:32:53,104 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:32:53,104 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:32:53,129 INFO L134 CoverageAnalysis]: Checked inductivity of 1496 backedges. 12 proven. 676 refuted. 0 times theorem prover too weak. 808 trivial. 0 not checked. [2020-10-27 14:32:53,130 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [159928403] [2020-10-27 14:32:53,130 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 14:32:53,130 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [30] total 30 [2020-10-27 14:32:53,130 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1661821142] [2020-10-27 14:32:53,131 INFO L461 AbstractCegarLoop]: Interpolant automaton has 30 states [2020-10-27 14:32:53,131 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 14:32:53,131 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2020-10-27 14:32:53,132 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=408, Invalid=462, Unknown=0, NotChecked=0, Total=870 [2020-10-27 14:32:53,132 INFO L87 Difference]: Start difference. First operand 172 states and 174 transitions. Second operand 30 states. [2020-10-27 14:32:53,507 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 14:32:53,507 INFO L93 Difference]: Finished difference Result 291 states and 296 transitions. [2020-10-27 14:32:53,508 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2020-10-27 14:32:53,508 INFO L78 Accepts]: Start accepts. Automaton has 30 states. Word has length 169 [2020-10-27 14:32:53,508 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 14:32:53,510 INFO L225 Difference]: With dead ends: 291 [2020-10-27 14:32:53,510 INFO L226 Difference]: Without dead ends: 178 [2020-10-27 14:32:53,511 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=408, Invalid=462, Unknown=0, NotChecked=0, Total=870 [2020-10-27 14:32:53,511 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 178 states. [2020-10-27 14:32:53,520 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 178 to 176. [2020-10-27 14:32:53,521 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 176 states. [2020-10-27 14:32:53,521 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 176 states to 176 states and 178 transitions. [2020-10-27 14:32:53,522 INFO L78 Accepts]: Start accepts. Automaton has 176 states and 178 transitions. Word has length 169 [2020-10-27 14:32:53,522 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 14:32:53,522 INFO L481 AbstractCegarLoop]: Abstraction has 176 states and 178 transitions. [2020-10-27 14:32:53,522 INFO L482 AbstractCegarLoop]: Interpolant automaton has 30 states. [2020-10-27 14:32:53,522 INFO L276 IsEmpty]: Start isEmpty. Operand 176 states and 178 transitions. [2020-10-27 14:32:53,523 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 174 [2020-10-27 14:32:53,523 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 14:32:53,524 INFO L422 BasicCegarLoop]: trace histogram [27, 27, 27, 27, 7, 7, 7, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 14:32:53,524 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2020-10-27 14:32:53,524 INFO L429 AbstractCegarLoop]: === Iteration 35 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 14:32:53,524 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 14:32:53,524 INFO L82 PathProgramCache]: Analyzing trace with hash 1992201842, now seen corresponding path program 31 times [2020-10-27 14:32:53,525 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 14:32:53,525 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [62549696] [2020-10-27 14:32:53,525 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 14:32:53,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:32:53,572 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:32:53,633 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:32:58,723 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:32:58,724 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 195 [2020-10-27 14:32:58,724 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 14:32:58,724 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5169 [2020-10-27 14:32:58,724 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:32:58,724 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 29 [2020-10-27 14:32:58,724 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 67 [2020-10-27 14:32:58,724 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 56 [2020-10-27 14:32:58,724 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:32:59,393 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 14:32:59,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:32:59,396 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:32:59,398 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:32:59,398 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 14:32:59,398 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:32:59,398 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 14:32:59,398 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:32:59,398 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:32:59,398 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:32:59,399 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:32:59,399 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:32:59,400 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2020-10-27 14:32:59,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:32:59,401 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:32:59,402 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:32:59,402 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:32:59,402 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:32:59,403 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 14:32:59,403 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:32:59,403 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:32:59,403 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-27 14:32:59,403 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:32:59,403 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:32:59,404 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2020-10-27 14:32:59,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:32:59,405 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:32:59,406 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:32:59,406 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:32:59,406 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:32:59,407 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-27 14:32:59,407 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:32:59,407 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:32:59,407 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-27 14:32:59,407 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:32:59,407 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:32:59,408 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2020-10-27 14:32:59,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:32:59,409 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:32:59,410 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:32:59,410 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:32:59,410 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:32:59,410 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-27 14:32:59,411 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:32:59,411 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:32:59,411 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-27 14:32:59,411 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:32:59,411 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:32:59,412 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2020-10-27 14:32:59,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:32:59,413 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:32:59,414 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:32:59,414 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:32:59,414 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:32:59,414 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 14:32:59,414 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:32:59,415 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:32:59,415 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-27 14:32:59,415 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:32:59,415 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:32:59,416 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 151 [2020-10-27 14:32:59,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:32:59,417 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:32:59,418 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:32:59,418 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:32:59,418 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:32:59,418 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 14:32:59,418 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:32:59,418 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:32:59,419 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-27 14:32:59,419 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:32:59,419 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:32:59,420 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 159 [2020-10-27 14:32:59,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:32:59,421 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:32:59,421 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:32:59,422 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:32:59,422 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:32:59,422 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-27 14:32:59,422 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:32:59,422 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:32:59,422 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-27 14:32:59,422 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:32:59,422 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:32:59,444 INFO L134 CoverageAnalysis]: Checked inductivity of 1602 backedges. 12 proven. 729 refuted. 0 times theorem prover too weak. 861 trivial. 0 not checked. [2020-10-27 14:32:59,444 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [62549696] [2020-10-27 14:32:59,444 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 14:32:59,444 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [31] total 31 [2020-10-27 14:32:59,445 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1549533637] [2020-10-27 14:32:59,445 INFO L461 AbstractCegarLoop]: Interpolant automaton has 31 states [2020-10-27 14:32:59,445 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 14:32:59,446 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2020-10-27 14:32:59,446 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=437, Invalid=493, Unknown=0, NotChecked=0, Total=930 [2020-10-27 14:32:59,446 INFO L87 Difference]: Start difference. First operand 176 states and 178 transitions. Second operand 31 states. [2020-10-27 14:32:59,922 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 14:32:59,922 INFO L93 Difference]: Finished difference Result 297 states and 302 transitions. [2020-10-27 14:32:59,922 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2020-10-27 14:32:59,923 INFO L78 Accepts]: Start accepts. Automaton has 31 states. Word has length 173 [2020-10-27 14:32:59,923 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 14:32:59,924 INFO L225 Difference]: With dead ends: 297 [2020-10-27 14:32:59,924 INFO L226 Difference]: Without dead ends: 182 [2020-10-27 14:32:59,925 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=437, Invalid=493, Unknown=0, NotChecked=0, Total=930 [2020-10-27 14:32:59,925 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 182 states. [2020-10-27 14:32:59,933 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 182 to 180. [2020-10-27 14:32:59,933 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 180 states. [2020-10-27 14:32:59,934 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 180 states to 180 states and 182 transitions. [2020-10-27 14:32:59,935 INFO L78 Accepts]: Start accepts. Automaton has 180 states and 182 transitions. Word has length 173 [2020-10-27 14:32:59,935 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 14:32:59,935 INFO L481 AbstractCegarLoop]: Abstraction has 180 states and 182 transitions. [2020-10-27 14:32:59,935 INFO L482 AbstractCegarLoop]: Interpolant automaton has 31 states. [2020-10-27 14:32:59,935 INFO L276 IsEmpty]: Start isEmpty. Operand 180 states and 182 transitions. [2020-10-27 14:32:59,936 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2020-10-27 14:32:59,936 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 14:32:59,936 INFO L422 BasicCegarLoop]: trace histogram [28, 28, 28, 28, 7, 7, 7, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 14:32:59,937 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2020-10-27 14:32:59,937 INFO L429 AbstractCegarLoop]: === Iteration 36 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 14:32:59,937 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 14:32:59,937 INFO L82 PathProgramCache]: Analyzing trace with hash 1031157102, now seen corresponding path program 32 times [2020-10-27 14:32:59,937 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 14:32:59,937 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [482220150] [2020-10-27 14:32:59,938 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 14:32:59,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:32:59,979 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:33:00,036 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:33:04,964 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:33:04,964 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 199 [2020-10-27 14:33:04,964 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 14:33:04,964 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-10-27 14:33:04,964 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:33:04,964 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 30 [2020-10-27 14:33:04,964 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 69 [2020-10-27 14:33:04,964 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 58 [2020-10-27 14:33:04,965 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:33:05,677 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 14:33:05,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:33:05,680 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:33:05,681 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:33:05,682 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 14:33:05,682 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:33:05,682 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 14:33:05,682 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:33:05,682 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:33:05,682 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:33:05,682 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:33:05,682 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:33:05,683 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2020-10-27 14:33:05,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:33:05,684 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:33:05,685 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:33:05,685 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:33:05,685 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:33:05,685 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-27 14:33:05,685 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:33:05,685 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:33:05,686 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-27 14:33:05,686 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:33:05,686 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:33:05,686 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2020-10-27 14:33:05,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:33:05,687 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:33:05,688 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:33:05,688 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:33:05,688 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:33:05,688 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-27 14:33:05,688 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:33:05,688 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:33:05,688 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-27 14:33:05,688 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:33:05,688 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:33:05,689 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2020-10-27 14:33:05,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:33:05,690 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:33:05,691 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:33:05,691 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:33:05,691 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:33:05,691 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-27 14:33:05,691 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:33:05,691 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:33:05,691 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-27 14:33:05,692 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:33:05,692 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:33:05,692 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 147 [2020-10-27 14:33:05,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:33:05,693 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:33:05,694 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:33:05,695 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:33:05,695 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:33:05,695 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 14:33:05,695 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:33:05,695 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:33:05,695 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-27 14:33:05,695 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:33:05,695 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:33:05,696 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 155 [2020-10-27 14:33:05,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:33:05,697 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:33:05,698 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:33:05,698 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:33:05,698 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:33:05,698 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-27 14:33:05,699 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:33:05,699 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:33:05,699 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-27 14:33:05,699 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:33:05,699 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:33:05,700 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 163 [2020-10-27 14:33:05,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:33:05,701 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:33:05,702 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:33:05,702 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:33:05,702 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:33:05,702 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-27 14:33:05,702 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:33:05,702 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:33:05,702 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-27 14:33:05,703 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:33:05,703 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:33:05,723 INFO L134 CoverageAnalysis]: Checked inductivity of 1712 backedges. 12 proven. 784 refuted. 0 times theorem prover too weak. 916 trivial. 0 not checked. [2020-10-27 14:33:05,723 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [482220150] [2020-10-27 14:33:05,723 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 14:33:05,723 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [32] total 32 [2020-10-27 14:33:05,723 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [355390851] [2020-10-27 14:33:05,724 INFO L461 AbstractCegarLoop]: Interpolant automaton has 32 states [2020-10-27 14:33:05,724 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 14:33:05,725 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2020-10-27 14:33:05,725 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=467, Invalid=525, Unknown=0, NotChecked=0, Total=992 [2020-10-27 14:33:05,725 INFO L87 Difference]: Start difference. First operand 180 states and 182 transitions. Second operand 32 states. [2020-10-27 14:33:06,236 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 14:33:06,236 INFO L93 Difference]: Finished difference Result 303 states and 308 transitions. [2020-10-27 14:33:06,237 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2020-10-27 14:33:06,237 INFO L78 Accepts]: Start accepts. Automaton has 32 states. Word has length 177 [2020-10-27 14:33:06,237 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 14:33:06,239 INFO L225 Difference]: With dead ends: 303 [2020-10-27 14:33:06,239 INFO L226 Difference]: Without dead ends: 186 [2020-10-27 14:33:06,241 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=467, Invalid=525, Unknown=0, NotChecked=0, Total=992 [2020-10-27 14:33:06,241 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 186 states. [2020-10-27 14:33:06,250 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 186 to 184. [2020-10-27 14:33:06,251 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 184 states. [2020-10-27 14:33:06,252 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 184 states to 184 states and 186 transitions. [2020-10-27 14:33:06,252 INFO L78 Accepts]: Start accepts. Automaton has 184 states and 186 transitions. Word has length 177 [2020-10-27 14:33:06,252 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 14:33:06,252 INFO L481 AbstractCegarLoop]: Abstraction has 184 states and 186 transitions. [2020-10-27 14:33:06,252 INFO L482 AbstractCegarLoop]: Interpolant automaton has 32 states. [2020-10-27 14:33:06,252 INFO L276 IsEmpty]: Start isEmpty. Operand 184 states and 186 transitions. [2020-10-27 14:33:06,253 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 182 [2020-10-27 14:33:06,253 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 14:33:06,254 INFO L422 BasicCegarLoop]: trace histogram [29, 29, 29, 29, 7, 7, 7, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 14:33:06,254 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2020-10-27 14:33:06,254 INFO L429 AbstractCegarLoop]: === Iteration 37 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 14:33:06,254 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 14:33:06,254 INFO L82 PathProgramCache]: Analyzing trace with hash -471406998, now seen corresponding path program 33 times [2020-10-27 14:33:06,255 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 14:33:06,255 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1446029365] [2020-10-27 14:33:06,255 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 14:33:06,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:33:06,313 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:33:06,387 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:33:11,363 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:33:11,363 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 203 [2020-10-27 14:33:11,363 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 14:33:11,363 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5075 [2020-10-27 14:33:11,363 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:33:11,364 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 31 [2020-10-27 14:33:11,364 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 71 [2020-10-27 14:33:11,364 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 60 [2020-10-27 14:33:11,364 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:33:12,139 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 14:33:12,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:33:12,141 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:33:12,143 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:33:12,143 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 14:33:12,144 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:33:12,144 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 14:33:12,144 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:33:12,144 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:33:12,144 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:33:12,144 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:33:12,144 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:33:12,145 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2020-10-27 14:33:12,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:33:12,146 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:33:12,147 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:33:12,147 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:33:12,147 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:33:12,147 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-27 14:33:12,147 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:33:12,147 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:33:12,147 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-27 14:33:12,148 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:33:12,148 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:33:12,148 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2020-10-27 14:33:12,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:33:12,149 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:33:12,150 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:33:12,150 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:33:12,151 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:33:12,151 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 14:33:12,151 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:33:12,151 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:33:12,151 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-27 14:33:12,151 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:33:12,151 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:33:12,152 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2020-10-27 14:33:12,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:33:12,154 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:33:12,154 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:33:12,155 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:33:12,155 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:33:12,155 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 14:33:12,155 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:33:12,155 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:33:12,155 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-27 14:33:12,155 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:33:12,156 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:33:12,156 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 151 [2020-10-27 14:33:12,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:33:12,158 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:33:12,159 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:33:12,159 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:33:12,159 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:33:12,159 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 14:33:12,159 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:33:12,159 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:33:12,159 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-27 14:33:12,160 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:33:12,160 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:33:12,160 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 159 [2020-10-27 14:33:12,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:33:12,162 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:33:12,162 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:33:12,163 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:33:12,163 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:33:12,163 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 14:33:12,163 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:33:12,163 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:33:12,163 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-27 14:33:12,163 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:33:12,164 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:33:12,164 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 167 [2020-10-27 14:33:12,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:33:12,165 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:33:12,166 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:33:12,166 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:33:12,166 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:33:12,167 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-27 14:33:12,167 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:33:12,167 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:33:12,167 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-27 14:33:12,167 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:33:12,167 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:33:12,190 INFO L134 CoverageAnalysis]: Checked inductivity of 1826 backedges. 12 proven. 841 refuted. 0 times theorem prover too weak. 973 trivial. 0 not checked. [2020-10-27 14:33:12,190 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1446029365] [2020-10-27 14:33:12,190 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 14:33:12,190 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [33] total 33 [2020-10-27 14:33:12,191 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1910799277] [2020-10-27 14:33:12,191 INFO L461 AbstractCegarLoop]: Interpolant automaton has 33 states [2020-10-27 14:33:12,191 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 14:33:12,192 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2020-10-27 14:33:12,192 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=498, Invalid=558, Unknown=0, NotChecked=0, Total=1056 [2020-10-27 14:33:12,192 INFO L87 Difference]: Start difference. First operand 184 states and 186 transitions. Second operand 33 states. [2020-10-27 14:33:12,699 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 14:33:12,699 INFO L93 Difference]: Finished difference Result 309 states and 314 transitions. [2020-10-27 14:33:12,699 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2020-10-27 14:33:12,700 INFO L78 Accepts]: Start accepts. Automaton has 33 states. Word has length 181 [2020-10-27 14:33:12,700 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 14:33:12,702 INFO L225 Difference]: With dead ends: 309 [2020-10-27 14:33:12,702 INFO L226 Difference]: Without dead ends: 190 [2020-10-27 14:33:12,704 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 29 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=498, Invalid=558, Unknown=0, NotChecked=0, Total=1056 [2020-10-27 14:33:12,704 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 190 states. [2020-10-27 14:33:12,714 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 190 to 188. [2020-10-27 14:33:12,715 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 188 states. [2020-10-27 14:33:12,715 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 188 states to 188 states and 190 transitions. [2020-10-27 14:33:12,716 INFO L78 Accepts]: Start accepts. Automaton has 188 states and 190 transitions. Word has length 181 [2020-10-27 14:33:12,716 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 14:33:12,716 INFO L481 AbstractCegarLoop]: Abstraction has 188 states and 190 transitions. [2020-10-27 14:33:12,716 INFO L482 AbstractCegarLoop]: Interpolant automaton has 33 states. [2020-10-27 14:33:12,716 INFO L276 IsEmpty]: Start isEmpty. Operand 188 states and 190 transitions. [2020-10-27 14:33:12,717 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 186 [2020-10-27 14:33:12,718 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 14:33:12,718 INFO L422 BasicCegarLoop]: trace histogram [30, 30, 30, 30, 7, 7, 7, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 14:33:12,718 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2020-10-27 14:33:12,718 INFO L429 AbstractCegarLoop]: === Iteration 38 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 14:33:12,718 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 14:33:12,719 INFO L82 PathProgramCache]: Analyzing trace with hash -1866749594, now seen corresponding path program 34 times [2020-10-27 14:33:12,719 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 14:33:12,719 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [160154992] [2020-10-27 14:33:12,719 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 14:33:12,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:33:12,783 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:33:12,886 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:33:17,835 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:33:17,836 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 207 [2020-10-27 14:33:17,836 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 14:33:17,836 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5079 [2020-10-27 14:33:17,836 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:33:17,836 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 32 [2020-10-27 14:33:17,836 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 73 [2020-10-27 14:33:17,836 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 62 [2020-10-27 14:33:17,836 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:33:18,660 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 14:33:18,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:33:18,663 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:33:18,665 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:33:18,665 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 14:33:18,665 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:33:18,665 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 14:33:18,666 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:33:18,666 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:33:18,666 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:33:18,666 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:33:18,666 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:33:18,668 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2020-10-27 14:33:18,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:33:18,669 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:33:18,670 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:33:18,670 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:33:18,670 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:33:18,670 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-27 14:33:18,670 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:33:18,670 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:33:18,670 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-27 14:33:18,671 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:33:18,671 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:33:18,671 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2020-10-27 14:33:18,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:33:18,672 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:33:18,673 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:33:18,673 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:33:18,673 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:33:18,673 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-27 14:33:18,674 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:33:18,674 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:33:18,674 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-27 14:33:18,674 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:33:18,674 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:33:18,675 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 147 [2020-10-27 14:33:18,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:33:18,676 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:33:18,676 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:33:18,677 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:33:18,677 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:33:18,677 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 14:33:18,677 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:33:18,677 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:33:18,677 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-27 14:33:18,678 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:33:18,678 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:33:18,678 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 155 [2020-10-27 14:33:18,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:33:18,679 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:33:18,680 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:33:18,680 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:33:18,680 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:33:18,681 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-27 14:33:18,681 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:33:18,681 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:33:18,681 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-27 14:33:18,681 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:33:18,681 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:33:18,682 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 163 [2020-10-27 14:33:18,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:33:18,683 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:33:18,684 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:33:18,684 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:33:18,684 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:33:18,684 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-27 14:33:18,684 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:33:18,684 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:33:18,684 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-27 14:33:18,685 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:33:18,685 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:33:18,686 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 171 [2020-10-27 14:33:18,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:33:18,687 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:33:18,688 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:33:18,688 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:33:18,688 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:33:18,688 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 14:33:18,688 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:33:18,688 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:33:18,688 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-27 14:33:18,688 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:33:18,689 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:33:18,709 INFO L134 CoverageAnalysis]: Checked inductivity of 1944 backedges. 12 proven. 900 refuted. 0 times theorem prover too weak. 1032 trivial. 0 not checked. [2020-10-27 14:33:18,709 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [160154992] [2020-10-27 14:33:18,709 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 14:33:18,709 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [34] total 34 [2020-10-27 14:33:18,709 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1152650654] [2020-10-27 14:33:18,710 INFO L461 AbstractCegarLoop]: Interpolant automaton has 34 states [2020-10-27 14:33:18,710 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 14:33:18,710 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2020-10-27 14:33:18,711 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=530, Invalid=592, Unknown=0, NotChecked=0, Total=1122 [2020-10-27 14:33:18,711 INFO L87 Difference]: Start difference. First operand 188 states and 190 transitions. Second operand 34 states. [2020-10-27 14:33:19,259 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 14:33:19,259 INFO L93 Difference]: Finished difference Result 315 states and 320 transitions. [2020-10-27 14:33:19,260 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2020-10-27 14:33:19,260 INFO L78 Accepts]: Start accepts. Automaton has 34 states. Word has length 185 [2020-10-27 14:33:19,260 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 14:33:19,262 INFO L225 Difference]: With dead ends: 315 [2020-10-27 14:33:19,262 INFO L226 Difference]: Without dead ends: 194 [2020-10-27 14:33:19,263 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=530, Invalid=592, Unknown=0, NotChecked=0, Total=1122 [2020-10-27 14:33:19,264 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 194 states. [2020-10-27 14:33:19,271 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 194 to 192. [2020-10-27 14:33:19,271 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 192 states. [2020-10-27 14:33:19,272 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 192 states to 192 states and 194 transitions. [2020-10-27 14:33:19,272 INFO L78 Accepts]: Start accepts. Automaton has 192 states and 194 transitions. Word has length 185 [2020-10-27 14:33:19,272 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 14:33:19,272 INFO L481 AbstractCegarLoop]: Abstraction has 192 states and 194 transitions. [2020-10-27 14:33:19,272 INFO L482 AbstractCegarLoop]: Interpolant automaton has 34 states. [2020-10-27 14:33:19,273 INFO L276 IsEmpty]: Start isEmpty. Operand 192 states and 194 transitions. [2020-10-27 14:33:19,274 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 190 [2020-10-27 14:33:19,274 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 14:33:19,274 INFO L422 BasicCegarLoop]: trace histogram [31, 31, 31, 31, 7, 7, 7, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 14:33:19,274 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2020-10-27 14:33:19,274 INFO L429 AbstractCegarLoop]: === Iteration 39 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 14:33:19,275 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 14:33:19,275 INFO L82 PathProgramCache]: Analyzing trace with hash -870351262, now seen corresponding path program 35 times [2020-10-27 14:33:19,275 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 14:33:19,275 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [704506934] [2020-10-27 14:33:19,275 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 14:33:19,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:33:19,340 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:33:19,440 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:33:24,392 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:33:24,393 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 211 [2020-10-27 14:33:24,393 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 14:33:24,393 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5080 [2020-10-27 14:33:24,393 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:33:24,393 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 33 [2020-10-27 14:33:24,393 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 75 [2020-10-27 14:33:24,393 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 64 [2020-10-27 14:33:24,393 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:33:25,262 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 14:33:25,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:33:25,265 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:33:25,267 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:33:25,267 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 14:33:25,267 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:33:25,267 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 14:33:25,267 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:33:25,268 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:33:25,268 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:33:25,268 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:33:25,270 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-27 14:33:25,272 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2020-10-27 14:33:25,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:33:25,273 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:33:25,274 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:33:25,274 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:33:25,274 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:33:25,274 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 14:33:25,274 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:33:25,274 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:33:25,274 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-27 14:33:25,274 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:33:25,275 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:33:25,275 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2020-10-27 14:33:25,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:33:25,276 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:33:25,277 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:33:25,277 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:33:25,277 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:33:25,277 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-27 14:33:25,277 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:33:25,277 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:33:25,277 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-27 14:33:25,277 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:33:25,277 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:33:25,278 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 151 [2020-10-27 14:33:25,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:33:25,279 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:33:25,280 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:33:25,280 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:33:25,280 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:33:25,280 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-27 14:33:25,280 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:33:25,280 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:33:25,281 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-27 14:33:25,281 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:33:25,281 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:33:25,281 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 159 [2020-10-27 14:33:25,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:33:25,283 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:33:25,284 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:33:25,284 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:33:25,284 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:33:25,284 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 14:33:25,284 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:33:25,284 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:33:25,284 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-27 14:33:25,285 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:33:25,285 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:33:25,286 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 167 [2020-10-27 14:33:25,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:33:25,287 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:33:25,288 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:33:25,288 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:33:25,288 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:33:25,288 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 14:33:25,289 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:33:25,289 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:33:25,289 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-27 14:33:25,289 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:33:25,289 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:33:25,290 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2020-10-27 14:33:25,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:33:25,291 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:33:25,292 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:33:25,292 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:33:25,293 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:33:25,293 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 14:33:25,293 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:33:25,293 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:33:25,293 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-27 14:33:25,293 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:33:25,293 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:33:25,319 INFO L134 CoverageAnalysis]: Checked inductivity of 2066 backedges. 12 proven. 961 refuted. 0 times theorem prover too weak. 1093 trivial. 0 not checked. [2020-10-27 14:33:25,320 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [704506934] [2020-10-27 14:33:25,320 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 14:33:25,320 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [35] total 35 [2020-10-27 14:33:25,320 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [119719226] [2020-10-27 14:33:25,320 INFO L461 AbstractCegarLoop]: Interpolant automaton has 35 states [2020-10-27 14:33:25,321 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 14:33:25,321 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2020-10-27 14:33:25,322 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=563, Invalid=627, Unknown=0, NotChecked=0, Total=1190 [2020-10-27 14:33:25,322 INFO L87 Difference]: Start difference. First operand 192 states and 194 transitions. Second operand 35 states. [2020-10-27 14:33:25,882 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 14:33:25,882 INFO L93 Difference]: Finished difference Result 321 states and 326 transitions. [2020-10-27 14:33:25,883 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2020-10-27 14:33:25,883 INFO L78 Accepts]: Start accepts. Automaton has 35 states. Word has length 189 [2020-10-27 14:33:25,883 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 14:33:25,884 INFO L225 Difference]: With dead ends: 321 [2020-10-27 14:33:25,885 INFO L226 Difference]: Without dead ends: 198 [2020-10-27 14:33:25,886 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=563, Invalid=627, Unknown=0, NotChecked=0, Total=1190 [2020-10-27 14:33:25,886 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 198 states. [2020-10-27 14:33:25,899 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 198 to 196. [2020-10-27 14:33:25,899 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 196 states. [2020-10-27 14:33:25,900 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 196 states to 196 states and 198 transitions. [2020-10-27 14:33:25,900 INFO L78 Accepts]: Start accepts. Automaton has 196 states and 198 transitions. Word has length 189 [2020-10-27 14:33:25,900 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 14:33:25,900 INFO L481 AbstractCegarLoop]: Abstraction has 196 states and 198 transitions. [2020-10-27 14:33:25,900 INFO L482 AbstractCegarLoop]: Interpolant automaton has 35 states. [2020-10-27 14:33:25,901 INFO L276 IsEmpty]: Start isEmpty. Operand 196 states and 198 transitions. [2020-10-27 14:33:25,902 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 194 [2020-10-27 14:33:25,902 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 14:33:25,902 INFO L422 BasicCegarLoop]: trace histogram [32, 32, 32, 32, 7, 7, 7, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 14:33:25,902 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2020-10-27 14:33:25,902 INFO L429 AbstractCegarLoop]: === Iteration 40 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 14:33:25,903 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 14:33:25,903 INFO L82 PathProgramCache]: Analyzing trace with hash -4364962, now seen corresponding path program 36 times [2020-10-27 14:33:25,903 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 14:33:25,903 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [364524033] [2020-10-27 14:33:25,903 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 14:33:25,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:33:25,972 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:33:26,083 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:33:31,088 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:33:31,088 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 215 [2020-10-27 14:33:31,088 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 14:33:31,088 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5144 [2020-10-27 14:33:31,088 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:33:31,088 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 34 [2020-10-27 14:33:31,088 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 77 [2020-10-27 14:33:31,088 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 66 [2020-10-27 14:33:31,089 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:33:32,032 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 14:33:32,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:33:32,036 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:33:32,037 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:33:32,037 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 14:33:32,038 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:33:32,038 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 14:33:32,038 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:33:32,038 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:33:32,038 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:33:32,038 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:33:32,039 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:33:32,040 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2020-10-27 14:33:32,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:33:32,041 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:33:32,042 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:33:32,042 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:33:32,042 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:33:32,042 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 14:33:32,042 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:33:32,043 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:33:32,043 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-27 14:33:32,043 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:33:32,043 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:33:32,044 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 147 [2020-10-27 14:33:32,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:33:32,045 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:33:32,045 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:33:32,046 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:33:32,046 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:33:32,046 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-27 14:33:32,046 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:33:32,046 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:33:32,046 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-27 14:33:32,046 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:33:32,047 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:33:32,047 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 155 [2020-10-27 14:33:32,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:33:32,048 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:33:32,049 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:33:32,049 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:33:32,049 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:33:32,049 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-27 14:33:32,049 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:33:32,050 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:33:32,050 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-27 14:33:32,050 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:33:32,050 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:33:32,051 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 163 [2020-10-27 14:33:32,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:33:32,052 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:33:32,052 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:33:32,053 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:33:32,053 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:33:32,053 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-27 14:33:32,053 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:33:32,053 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:33:32,053 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-27 14:33:32,053 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:33:32,054 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:33:32,054 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 171 [2020-10-27 14:33:32,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:33:32,055 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:33:32,056 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:33:32,056 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:33:32,056 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:33:32,057 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 14:33:32,057 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:33:32,057 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:33:32,057 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-27 14:33:32,057 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:33:32,057 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:33:32,058 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 179 [2020-10-27 14:33:32,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:33:32,059 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:33:32,059 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:33:32,060 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:33:32,060 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:33:32,060 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-27 14:33:32,060 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:33:32,060 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:33:32,060 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-27 14:33:32,060 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:33:32,060 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:33:32,082 INFO L134 CoverageAnalysis]: Checked inductivity of 2192 backedges. 12 proven. 1024 refuted. 0 times theorem prover too weak. 1156 trivial. 0 not checked. [2020-10-27 14:33:32,083 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [364524033] [2020-10-27 14:33:32,083 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 14:33:32,083 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [36] total 36 [2020-10-27 14:33:32,083 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [601191437] [2020-10-27 14:33:32,083 INFO L461 AbstractCegarLoop]: Interpolant automaton has 36 states [2020-10-27 14:33:32,083 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 14:33:32,084 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2020-10-27 14:33:32,084 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=597, Invalid=663, Unknown=0, NotChecked=0, Total=1260 [2020-10-27 14:33:32,084 INFO L87 Difference]: Start difference. First operand 196 states and 198 transitions. Second operand 36 states. [2020-10-27 14:33:32,606 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 14:33:32,606 INFO L93 Difference]: Finished difference Result 327 states and 332 transitions. [2020-10-27 14:33:32,607 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2020-10-27 14:33:32,607 INFO L78 Accepts]: Start accepts. Automaton has 36 states. Word has length 193 [2020-10-27 14:33:32,607 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 14:33:32,609 INFO L225 Difference]: With dead ends: 327 [2020-10-27 14:33:32,609 INFO L226 Difference]: Without dead ends: 202 [2020-10-27 14:33:32,611 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=597, Invalid=663, Unknown=0, NotChecked=0, Total=1260 [2020-10-27 14:33:32,611 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 202 states. [2020-10-27 14:33:32,621 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 202 to 200. [2020-10-27 14:33:32,621 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 200 states. [2020-10-27 14:33:32,622 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 200 states to 200 states and 202 transitions. [2020-10-27 14:33:32,622 INFO L78 Accepts]: Start accepts. Automaton has 200 states and 202 transitions. Word has length 193 [2020-10-27 14:33:32,623 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 14:33:32,623 INFO L481 AbstractCegarLoop]: Abstraction has 200 states and 202 transitions. [2020-10-27 14:33:32,623 INFO L482 AbstractCegarLoop]: Interpolant automaton has 36 states. [2020-10-27 14:33:32,623 INFO L276 IsEmpty]: Start isEmpty. Operand 200 states and 202 transitions. [2020-10-27 14:33:32,624 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 198 [2020-10-27 14:33:32,624 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 14:33:32,624 INFO L422 BasicCegarLoop]: trace histogram [33, 33, 33, 33, 7, 7, 7, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 14:33:32,625 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39 [2020-10-27 14:33:32,625 INFO L429 AbstractCegarLoop]: === Iteration 41 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 14:33:32,625 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 14:33:32,625 INFO L82 PathProgramCache]: Analyzing trace with hash -155165094, now seen corresponding path program 37 times [2020-10-27 14:33:32,625 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 14:33:32,625 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [854906040] [2020-10-27 14:33:32,626 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 14:33:32,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:33:32,681 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:33:32,753 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:33:37,739 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:33:37,740 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 219 [2020-10-27 14:33:37,740 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 14:33:37,740 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5077 [2020-10-27 14:33:37,740 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:33:37,740 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 35 [2020-10-27 14:33:37,740 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 79 [2020-10-27 14:33:37,740 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 68 [2020-10-27 14:33:37,740 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:33:38,725 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 14:33:38,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:33:38,729 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:33:38,731 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:33:38,731 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 14:33:38,731 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:33:38,731 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 14:33:38,731 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:33:38,731 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:33:38,731 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:33:38,731 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:33:38,732 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:33:38,733 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2020-10-27 14:33:38,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:33:38,734 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:33:38,734 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:33:38,734 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:33:38,735 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:33:38,735 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-27 14:33:38,735 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:33:38,735 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:33:38,735 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-27 14:33:38,735 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:33:38,735 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:33:38,736 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 151 [2020-10-27 14:33:38,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:33:38,737 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:33:38,738 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:33:38,738 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:33:38,738 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:33:38,738 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-27 14:33:38,738 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:33:38,738 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:33:38,738 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-27 14:33:38,738 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:33:38,739 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:33:38,739 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 159 [2020-10-27 14:33:38,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:33:38,740 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:33:38,741 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:33:38,741 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:33:38,741 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:33:38,741 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-27 14:33:38,741 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:33:38,741 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:33:38,741 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-27 14:33:38,741 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:33:38,741 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:33:38,742 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 167 [2020-10-27 14:33:38,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:33:38,743 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:33:38,744 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:33:38,744 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:33:38,744 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:33:38,744 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 14:33:38,745 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:33:38,745 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:33:38,745 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-27 14:33:38,745 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:33:38,745 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:33:38,746 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2020-10-27 14:33:38,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:33:38,747 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:33:38,748 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:33:38,749 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:33:38,749 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:33:38,749 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 14:33:38,749 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:33:38,749 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:33:38,749 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-27 14:33:38,750 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:33:38,750 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:33:38,751 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 183 [2020-10-27 14:33:38,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:33:38,752 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:33:38,753 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:33:38,753 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:33:38,753 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:33:38,753 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 14:33:38,753 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:33:38,754 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:33:38,754 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-27 14:33:38,754 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:33:38,754 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:33:38,789 INFO L134 CoverageAnalysis]: Checked inductivity of 2322 backedges. 12 proven. 1089 refuted. 0 times theorem prover too weak. 1221 trivial. 0 not checked. [2020-10-27 14:33:38,789 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [854906040] [2020-10-27 14:33:38,789 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 14:33:38,789 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [37] total 37 [2020-10-27 14:33:38,789 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1862368395] [2020-10-27 14:33:38,790 INFO L461 AbstractCegarLoop]: Interpolant automaton has 37 states [2020-10-27 14:33:38,790 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 14:33:38,791 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2020-10-27 14:33:38,791 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=632, Invalid=700, Unknown=0, NotChecked=0, Total=1332 [2020-10-27 14:33:38,791 INFO L87 Difference]: Start difference. First operand 200 states and 202 transitions. Second operand 37 states. [2020-10-27 14:33:39,367 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 14:33:39,367 INFO L93 Difference]: Finished difference Result 333 states and 338 transitions. [2020-10-27 14:33:39,367 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2020-10-27 14:33:39,368 INFO L78 Accepts]: Start accepts. Automaton has 37 states. Word has length 197 [2020-10-27 14:33:39,368 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 14:33:39,370 INFO L225 Difference]: With dead ends: 333 [2020-10-27 14:33:39,370 INFO L226 Difference]: Without dead ends: 206 [2020-10-27 14:33:39,371 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 33 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=632, Invalid=700, Unknown=0, NotChecked=0, Total=1332 [2020-10-27 14:33:39,371 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 206 states. [2020-10-27 14:33:39,380 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 206 to 204. [2020-10-27 14:33:39,381 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 204 states. [2020-10-27 14:33:39,382 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 204 states to 204 states and 206 transitions. [2020-10-27 14:33:39,382 INFO L78 Accepts]: Start accepts. Automaton has 204 states and 206 transitions. Word has length 197 [2020-10-27 14:33:39,382 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 14:33:39,382 INFO L481 AbstractCegarLoop]: Abstraction has 204 states and 206 transitions. [2020-10-27 14:33:39,382 INFO L482 AbstractCegarLoop]: Interpolant automaton has 37 states. [2020-10-27 14:33:39,382 INFO L276 IsEmpty]: Start isEmpty. Operand 204 states and 206 transitions. [2020-10-27 14:33:39,384 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 202 [2020-10-27 14:33:39,384 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 14:33:39,384 INFO L422 BasicCegarLoop]: trace histogram [34, 34, 34, 34, 7, 7, 7, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 14:33:39,384 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40 [2020-10-27 14:33:39,384 INFO L429 AbstractCegarLoop]: === Iteration 42 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 14:33:39,384 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 14:33:39,385 INFO L82 PathProgramCache]: Analyzing trace with hash 1574136150, now seen corresponding path program 38 times [2020-10-27 14:33:39,385 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 14:33:39,385 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1514310562] [2020-10-27 14:33:39,385 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 14:33:39,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:33:39,456 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:33:39,542 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:33:44,440 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:33:44,441 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 223 [2020-10-27 14:33:44,441 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 14:33:44,441 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5014 [2020-10-27 14:33:44,441 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:33:44,441 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 36 [2020-10-27 14:33:44,441 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 81 [2020-10-27 14:33:44,441 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 70 [2020-10-27 14:33:44,441 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:33:45,472 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 14:33:45,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:33:45,475 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:33:45,476 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:33:45,476 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 14:33:45,476 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:33:45,477 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 14:33:45,477 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:33:45,477 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:33:45,477 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:33:45,477 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:33:45,477 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:33:45,478 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 147 [2020-10-27 14:33:45,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:33:45,479 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:33:45,480 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:33:45,480 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:33:45,480 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:33:45,480 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-27 14:33:45,480 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:33:45,480 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:33:45,480 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-27 14:33:45,480 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:33:45,480 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:33:45,481 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 155 [2020-10-27 14:33:45,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:33:45,482 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:33:45,482 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:33:45,482 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:33:45,482 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:33:45,482 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-27 14:33:45,482 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:33:45,483 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:33:45,483 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-27 14:33:45,483 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:33:45,483 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:33:45,483 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 163 [2020-10-27 14:33:45,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:33:45,484 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:33:45,485 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:33:45,485 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:33:45,485 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:33:45,485 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-27 14:33:45,485 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:33:45,485 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:33:45,485 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-27 14:33:45,485 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:33:45,485 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:33:45,486 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 171 [2020-10-27 14:33:45,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:33:45,487 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:33:45,487 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:33:45,487 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:33:45,487 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:33:45,487 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-27 14:33:45,487 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:33:45,488 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:33:45,488 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-27 14:33:45,488 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:33:45,488 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:33:45,488 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 179 [2020-10-27 14:33:45,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:33:45,489 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:33:45,490 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:33:45,490 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:33:45,490 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:33:45,490 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-27 14:33:45,490 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:33:45,490 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:33:45,490 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-27 14:33:45,490 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:33:45,491 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:33:45,491 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 187 [2020-10-27 14:33:45,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:33:45,492 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:33:45,492 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:33:45,493 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:33:45,493 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:33:45,493 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-27 14:33:45,493 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:33:45,493 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:33:45,493 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-27 14:33:45,493 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:33:45,493 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:33:45,515 INFO L134 CoverageAnalysis]: Checked inductivity of 2456 backedges. 12 proven. 1156 refuted. 0 times theorem prover too weak. 1288 trivial. 0 not checked. [2020-10-27 14:33:45,516 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1514310562] [2020-10-27 14:33:45,516 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 14:33:45,516 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [38] total 38 [2020-10-27 14:33:45,516 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2048258583] [2020-10-27 14:33:45,516 INFO L461 AbstractCegarLoop]: Interpolant automaton has 38 states [2020-10-27 14:33:45,516 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 14:33:45,517 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2020-10-27 14:33:45,517 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=668, Invalid=738, Unknown=0, NotChecked=0, Total=1406 [2020-10-27 14:33:45,518 INFO L87 Difference]: Start difference. First operand 204 states and 206 transitions. Second operand 38 states. [2020-10-27 14:33:46,138 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 14:33:46,138 INFO L93 Difference]: Finished difference Result 339 states and 344 transitions. [2020-10-27 14:33:46,139 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2020-10-27 14:33:46,139 INFO L78 Accepts]: Start accepts. Automaton has 38 states. Word has length 201 [2020-10-27 14:33:46,139 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 14:33:46,141 INFO L225 Difference]: With dead ends: 339 [2020-10-27 14:33:46,141 INFO L226 Difference]: Without dead ends: 210 [2020-10-27 14:33:46,142 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=668, Invalid=738, Unknown=0, NotChecked=0, Total=1406 [2020-10-27 14:33:46,143 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 210 states. [2020-10-27 14:33:46,152 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 210 to 208. [2020-10-27 14:33:46,153 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 208 states. [2020-10-27 14:33:46,154 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 208 states to 208 states and 210 transitions. [2020-10-27 14:33:46,154 INFO L78 Accepts]: Start accepts. Automaton has 208 states and 210 transitions. Word has length 201 [2020-10-27 14:33:46,154 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 14:33:46,154 INFO L481 AbstractCegarLoop]: Abstraction has 208 states and 210 transitions. [2020-10-27 14:33:46,154 INFO L482 AbstractCegarLoop]: Interpolant automaton has 38 states. [2020-10-27 14:33:46,154 INFO L276 IsEmpty]: Start isEmpty. Operand 208 states and 210 transitions. [2020-10-27 14:33:46,156 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 206 [2020-10-27 14:33:46,156 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 14:33:46,156 INFO L422 BasicCegarLoop]: trace histogram [35, 35, 35, 35, 7, 7, 7, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 14:33:46,156 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41 [2020-10-27 14:33:46,156 INFO L429 AbstractCegarLoop]: === Iteration 43 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 14:33:46,157 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 14:33:46,157 INFO L82 PathProgramCache]: Analyzing trace with hash 1126270546, now seen corresponding path program 39 times [2020-10-27 14:33:46,157 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 14:33:46,157 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1676865981] [2020-10-27 14:33:46,157 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 14:33:46,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:33:46,213 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:33:46,289 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:33:51,246 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:33:51,246 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 227 [2020-10-27 14:33:51,246 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 14:33:51,246 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5055 [2020-10-27 14:33:51,246 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:33:51,246 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 37 [2020-10-27 14:33:51,247 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 83 [2020-10-27 14:33:51,247 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 72 [2020-10-27 14:33:51,247 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:33:52,323 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 14:33:52,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:33:52,327 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:33:52,328 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:33:52,328 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 14:33:52,328 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:33:52,329 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 14:33:52,329 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:33:52,329 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:33:52,329 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:33:52,329 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:33:52,329 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:33:52,330 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 151 [2020-10-27 14:33:52,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:33:52,331 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:33:52,332 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:33:52,332 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:33:52,332 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:33:52,332 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-27 14:33:52,333 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:33:52,333 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:33:52,333 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-27 14:33:52,333 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:33:52,333 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:33:52,334 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 159 [2020-10-27 14:33:52,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:33:52,335 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:33:52,336 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:33:52,336 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:33:52,336 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:33:52,336 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-27 14:33:52,336 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:33:52,336 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:33:52,337 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-27 14:33:52,337 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:33:52,337 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:33:52,338 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 167 [2020-10-27 14:33:52,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:33:52,339 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:33:52,340 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:33:52,340 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:33:52,340 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:33:52,340 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-27 14:33:52,340 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:33:52,340 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:33:52,340 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-27 14:33:52,340 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:33:52,340 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:33:52,341 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2020-10-27 14:33:52,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:33:52,342 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:33:52,343 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:33:52,343 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:33:52,343 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:33:52,343 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 14:33:52,344 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:33:52,344 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:33:52,344 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-27 14:33:52,344 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:33:52,344 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:33:52,345 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 183 [2020-10-27 14:33:52,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:33:52,346 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:33:52,347 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:33:52,347 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:33:52,347 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:33:52,347 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-27 14:33:52,347 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:33:52,347 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:33:52,348 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-27 14:33:52,348 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:33:52,348 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:33:52,349 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 191 [2020-10-27 14:33:52,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:33:52,350 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:33:52,350 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:33:52,351 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:33:52,351 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:33:52,351 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-27 14:33:52,351 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:33:52,351 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:33:52,351 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-27 14:33:52,351 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:33:52,352 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:33:52,381 INFO L134 CoverageAnalysis]: Checked inductivity of 2594 backedges. 12 proven. 1225 refuted. 0 times theorem prover too weak. 1357 trivial. 0 not checked. [2020-10-27 14:33:52,381 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1676865981] [2020-10-27 14:33:52,381 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 14:33:52,381 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [39] total 39 [2020-10-27 14:33:52,381 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [284062327] [2020-10-27 14:33:52,382 INFO L461 AbstractCegarLoop]: Interpolant automaton has 39 states [2020-10-27 14:33:52,382 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 14:33:52,382 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 39 interpolants. [2020-10-27 14:33:52,383 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=705, Invalid=777, Unknown=0, NotChecked=0, Total=1482 [2020-10-27 14:33:52,383 INFO L87 Difference]: Start difference. First operand 208 states and 210 transitions. Second operand 39 states. [2020-10-27 14:33:52,930 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 14:33:52,930 INFO L93 Difference]: Finished difference Result 345 states and 350 transitions. [2020-10-27 14:33:52,931 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2020-10-27 14:33:52,931 INFO L78 Accepts]: Start accepts. Automaton has 39 states. Word has length 205 [2020-10-27 14:33:52,932 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 14:33:52,933 INFO L225 Difference]: With dead ends: 345 [2020-10-27 14:33:52,933 INFO L226 Difference]: Without dead ends: 214 [2020-10-27 14:33:52,935 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 35 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=705, Invalid=777, Unknown=0, NotChecked=0, Total=1482 [2020-10-27 14:33:52,935 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 214 states. [2020-10-27 14:33:52,945 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 214 to 212. [2020-10-27 14:33:52,945 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 212 states. [2020-10-27 14:33:52,946 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 212 states to 212 states and 214 transitions. [2020-10-27 14:33:52,946 INFO L78 Accepts]: Start accepts. Automaton has 212 states and 214 transitions. Word has length 205 [2020-10-27 14:33:52,946 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 14:33:52,946 INFO L481 AbstractCegarLoop]: Abstraction has 212 states and 214 transitions. [2020-10-27 14:33:52,947 INFO L482 AbstractCegarLoop]: Interpolant automaton has 39 states. [2020-10-27 14:33:52,947 INFO L276 IsEmpty]: Start isEmpty. Operand 212 states and 214 transitions. [2020-10-27 14:33:52,948 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 210 [2020-10-27 14:33:52,948 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 14:33:52,948 INFO L422 BasicCegarLoop]: trace histogram [36, 36, 36, 36, 7, 7, 7, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 14:33:52,948 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42 [2020-10-27 14:33:52,948 INFO L429 AbstractCegarLoop]: === Iteration 44 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 14:33:52,949 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 14:33:52,949 INFO L82 PathProgramCache]: Analyzing trace with hash -1772767922, now seen corresponding path program 40 times [2020-10-27 14:33:52,949 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 14:33:52,949 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [825174118] [2020-10-27 14:33:52,949 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 14:33:52,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:33:53,009 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:33:53,107 FATAL L256 erpolLogProxyWrapper]: Now shrinking...