/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=WIDESTAMONGSMALL --traceabstraction.additional.smt.options tolerance=0.6 --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-lopstr16/break-2.i -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-28 09:23:40,013 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-28 09:23:40,015 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-28 09:23:40,050 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-28 09:23:40,051 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-28 09:23:40,052 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-28 09:23:40,054 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-28 09:23:40,056 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-28 09:23:40,058 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-28 09:23:40,060 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-28 09:23:40,061 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-28 09:23:40,062 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-28 09:23:40,063 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-28 09:23:40,064 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-28 09:23:40,065 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-28 09:23:40,067 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-28 09:23:40,068 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-28 09:23:40,069 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-28 09:23:40,071 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-28 09:23:40,073 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-28 09:23:40,075 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-28 09:23:40,077 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-28 09:23:40,079 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-28 09:23:40,080 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-28 09:23:40,098 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-28 09:23:40,099 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-28 09:23:40,099 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-28 09:23:40,100 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-28 09:23:40,100 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-28 09:23:40,102 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-28 09:23:40,102 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-28 09:23:40,103 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-28 09:23:40,104 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-28 09:23:40,105 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-28 09:23:40,106 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-28 09:23:40,106 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-28 09:23:40,107 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-28 09:23:40,107 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-28 09:23:40,107 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-28 09:23:40,108 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-28 09:23:40,109 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-28 09:23:40,110 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 [2020-10-28 09:23:40,137 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-28 09:23:40,137 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-28 09:23:40,139 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-28 09:23:40,139 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-28 09:23:40,139 INFO L138 SettingsManager]: * Use SBE=true [2020-10-28 09:23:40,140 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-28 09:23:40,140 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-28 09:23:40,140 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-28 09:23:40,140 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-28 09:23:40,140 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-28 09:23:40,141 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-28 09:23:40,141 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-28 09:23:40,141 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-28 09:23:40,141 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-28 09:23:40,141 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-28 09:23:40,142 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-28 09:23:40,142 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-28 09:23:40,142 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-28 09:23:40,142 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-28 09:23:40,142 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-28 09:23:40,143 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-28 09:23:40,143 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-28 09:23:40,143 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-28 09:23:40,143 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-28 09:23:40,143 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-28 09:23:40,144 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-28 09:23:40,144 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-28 09:23:40,144 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-28 09:23:40,144 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-28 09:23:40,144 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.6;log-additional-information=true;unknown-allowed=true; [2020-10-28 09:23:40,503 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-28 09:23:40,534 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-28 09:23:40,537 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-28 09:23:40,538 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-28 09:23:40,539 INFO L275 PluginConnector]: CDTParser initialized [2020-10-28 09:23:40,540 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/array-lopstr16/break-2.i [2020-10-28 09:23:40,615 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/214aa71ef/4aa558d2539a4d148377f6e16294b37c/FLAG83704f767 [2020-10-28 09:23:41,237 INFO L306 CDTParser]: Found 1 translation units. [2020-10-28 09:23:41,238 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/array-lopstr16/break-2.i [2020-10-28 09:23:41,245 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/214aa71ef/4aa558d2539a4d148377f6e16294b37c/FLAG83704f767 [2020-10-28 09:23:41,578 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/214aa71ef/4aa558d2539a4d148377f6e16294b37c [2020-10-28 09:23:41,581 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-28 09:23:41,588 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-28 09:23:41,590 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-28 09:23:41,590 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-28 09:23:41,594 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-28 09:23:41,595 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 09:23:41" (1/1) ... [2020-10-28 09:23:41,598 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4b92deba and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:23:41, skipping insertion in model container [2020-10-28 09:23:41,599 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 09:23:41" (1/1) ... [2020-10-28 09:23:41,607 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-28 09:23:41,623 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-28 09:23:41,782 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-28 09:23:48,057 INFO L203 MainTranslator]: Completed pre-run [2020-10-28 09:23:48,073 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-28 09:23:48,094 INFO L208 MainTranslator]: Completed translation [2020-10-28 09:23:48,095 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:23:48 WrapperNode [2020-10-28 09:23:48,095 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-28 09:23:48,096 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-28 09:23:48,096 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-28 09:23:48,096 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-28 09:23:48,110 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:23:48" (1/1) ... [2020-10-28 09:23:48,110 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:23:48" (1/1) ... [2020-10-28 09:23:48,119 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:23:48" (1/1) ... [2020-10-28 09:23:48,119 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:23:48" (1/1) ... [2020-10-28 09:23:48,126 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:23:48" (1/1) ... [2020-10-28 09:23:48,131 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:23:48" (1/1) ... [2020-10-28 09:23:48,133 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:23:48" (1/1) ... [2020-10-28 09:23:48,135 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-28 09:23:48,136 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-28 09:23:48,136 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-28 09:23:48,136 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-28 09:23:48,137 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:23:48" (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 [2020-10-28 09:23:48,219 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-28 09:23:48,220 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-28 09:23:48,220 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-28 09:23:48,220 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-10-28 09:23:48,220 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-28 09:23:48,221 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-28 09:23:48,221 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-28 09:23:48,221 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_perror_fail [2020-10-28 09:23:48,221 INFO L130 BoogieDeclarations]: Found specification of procedure __assert [2020-10-28 09:23:48,221 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-28 09:23:48,221 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-28 09:23:48,222 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-10-28 09:23:48,222 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-28 09:23:48,222 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-28 09:23:48,222 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-28 09:23:48,222 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-28 09:23:48,223 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-28 09:23:48,223 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-28 09:23:48,223 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-28 09:23:48,518 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-28 09:23:48,519 INFO L298 CfgBuilder]: Removed 2 assume(true) statements. [2020-10-28 09:23:48,520 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 09:23:48 BoogieIcfgContainer [2020-10-28 09:23:48,521 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-28 09:23:48,522 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-28 09:23:48,523 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-28 09:23:48,526 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-28 09:23:48,526 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.10 09:23:41" (1/3) ... [2020-10-28 09:23:48,527 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@76002319 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 09:23:48, skipping insertion in model container [2020-10-28 09:23:48,527 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:23:48" (2/3) ... [2020-10-28 09:23:48,528 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@76002319 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 09:23:48, skipping insertion in model container [2020-10-28 09:23:48,528 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 09:23:48" (3/3) ... [2020-10-28 09:23:48,530 INFO L111 eAbstractionObserver]: Analyzing ICFG break-2.i [2020-10-28 09:23:48,541 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-28 09:23:48,547 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-28 09:23:48,560 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-28 09:23:48,586 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-28 09:23:48,587 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-28 09:23:48,587 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-28 09:23:48,587 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-28 09:23:48,587 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-28 09:23:48,587 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-28 09:23:48,587 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-28 09:23:48,587 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-28 09:23:48,604 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states. [2020-10-28 09:23:48,610 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-10-28 09:23:48,610 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 09:23:48,611 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 09:23:48,611 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 09:23:48,617 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 09:23:48,618 INFO L82 PathProgramCache]: Analyzing trace with hash -1575655028, now seen corresponding path program 1 times [2020-10-28 09:23:48,627 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 09:23:48,628 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1494331309] [2020-10-28 09:23:48,628 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 09:23:48,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:23:48,794 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:23:48,914 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:23:48,915 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 26 [2020-10-28 09:23:48,915 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:23:48,915 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 145 [2020-10-28 09:23:48,917 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:23:48,917 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:23:48,918 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:23:48,918 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-28 09:23:48,918 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:23:48,918 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-28 09:23:49,056 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 09:23:49,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:23:49,065 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:23:49,080 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:23:49,080 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 09:23:49,081 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:23:49,081 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-28 09:23:49,081 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:23:49,081 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:23:49,081 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:23:49,082 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:23:49,082 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:23:49,082 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 09:23:49,102 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 09:23:49,103 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1494331309] [2020-10-28 09:23:49,105 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 09:23:49,105 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-28 09:23:49,106 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [527442087] [2020-10-28 09:23:49,112 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-28 09:23:49,112 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 09:23:49,133 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-28 09:23:49,136 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-28 09:23:49,138 INFO L87 Difference]: Start difference. First operand 31 states. Second operand 3 states. [2020-10-28 09:23:49,342 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 09:23:49,343 INFO L93 Difference]: Finished difference Result 61 states and 82 transitions. [2020-10-28 09:23:49,344 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-28 09:23:49,346 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 16 [2020-10-28 09:23:49,346 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 09:23:49,356 INFO L225 Difference]: With dead ends: 61 [2020-10-28 09:23:49,357 INFO L226 Difference]: Without dead ends: 31 [2020-10-28 09:23:49,360 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 [2020-10-28 09:23:49,379 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2020-10-28 09:23:49,421 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 23. [2020-10-28 09:23:49,423 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2020-10-28 09:23:49,426 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 26 transitions. [2020-10-28 09:23:49,427 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 26 transitions. Word has length 16 [2020-10-28 09:23:49,428 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 09:23:49,428 INFO L481 AbstractCegarLoop]: Abstraction has 23 states and 26 transitions. [2020-10-28 09:23:49,429 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-28 09:23:49,429 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 26 transitions. [2020-10-28 09:23:49,430 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-10-28 09:23:49,431 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 09:23:49,431 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 09:23:49,431 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-28 09:23:49,432 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 09:23:49,433 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 09:23:49,433 INFO L82 PathProgramCache]: Analyzing trace with hash 585993527, now seen corresponding path program 1 times [2020-10-28 09:23:49,433 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 09:23:49,434 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [166855780] [2020-10-28 09:23:49,434 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 09:23:49,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:23:49,495 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:23:49,561 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:23:49,562 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 26 [2020-10-28 09:23:49,562 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:23:49,562 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 77 [2020-10-28 09:23:49,562 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:23:49,562 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:23:49,563 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 09:23:49,563 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-28 09:23:49,563 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-28 09:23:49,563 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 09:23:49,633 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 09:23:49,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:23:49,638 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:23:49,648 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:23:49,648 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 09:23:49,648 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:23:49,648 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-28 09:23:49,649 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:23:49,649 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:23:49,649 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:23:49,649 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:23:49,649 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:23:49,650 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 09:23:49,658 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 09:23:49,658 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [166855780] [2020-10-28 09:23:49,658 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 09:23:49,659 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-28 09:23:49,659 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2044616122] [2020-10-28 09:23:49,660 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-28 09:23:49,661 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 09:23:49,661 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-28 09:23:49,661 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-28 09:23:49,662 INFO L87 Difference]: Start difference. First operand 23 states and 26 transitions. Second operand 4 states. [2020-10-28 09:23:49,835 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 09:23:49,836 INFO L93 Difference]: Finished difference Result 45 states and 53 transitions. [2020-10-28 09:23:49,837 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-28 09:23:49,837 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 16 [2020-10-28 09:23:49,837 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 09:23:49,838 INFO L225 Difference]: With dead ends: 45 [2020-10-28 09:23:49,838 INFO L226 Difference]: Without dead ends: 31 [2020-10-28 09:23:49,839 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-28 09:23:49,840 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2020-10-28 09:23:49,847 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 27. [2020-10-28 09:23:49,848 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2020-10-28 09:23:49,849 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 30 transitions. [2020-10-28 09:23:49,849 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 30 transitions. Word has length 16 [2020-10-28 09:23:49,849 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 09:23:49,849 INFO L481 AbstractCegarLoop]: Abstraction has 27 states and 30 transitions. [2020-10-28 09:23:49,850 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-28 09:23:49,850 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 30 transitions. [2020-10-28 09:23:49,850 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-10-28 09:23:49,851 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 09:23:49,851 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 09:23:49,851 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-28 09:23:49,851 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 09:23:49,852 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 09:23:49,852 INFO L82 PathProgramCache]: Analyzing trace with hash -1977759324, now seen corresponding path program 1 times [2020-10-28 09:23:49,852 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 09:23:49,853 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1933443305] [2020-10-28 09:23:49,853 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 09:23:49,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:23:49,872 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:23:49,888 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:23:50,029 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:23:50,402 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:23:50,403 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 29 [2020-10-28 09:23:50,403 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-28 09:23:50,403 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 537 [2020-10-28 09:23:50,404 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:23:50,404 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:23:50,405 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-28 09:23:50,405 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-28 09:23:50,405 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-28 09:23:50,405 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 09:23:50,480 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 09:23:50,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:23:50,484 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:23:50,490 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:23:50,490 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 09:23:50,490 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:23:50,490 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-28 09:23:50,491 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:23:50,491 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:23:50,491 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:23:50,491 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:23:50,491 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:23:50,492 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 09:23:50,497 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 09:23:50,497 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1933443305] [2020-10-28 09:23:50,497 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 09:23:50,497 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-28 09:23:50,498 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [989983693] [2020-10-28 09:23:50,498 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-28 09:23:50,498 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 09:23:50,499 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-28 09:23:50,499 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-28 09:23:50,500 INFO L87 Difference]: Start difference. First operand 27 states and 30 transitions. Second operand 5 states. [2020-10-28 09:23:50,698 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 09:23:50,699 INFO L93 Difference]: Finished difference Result 55 states and 64 transitions. [2020-10-28 09:23:50,700 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-28 09:23:50,700 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 19 [2020-10-28 09:23:50,700 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 09:23:50,701 INFO L225 Difference]: With dead ends: 55 [2020-10-28 09:23:50,701 INFO L226 Difference]: Without dead ends: 39 [2020-10-28 09:23:50,702 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-28 09:23:50,702 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2020-10-28 09:23:50,709 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 35. [2020-10-28 09:23:50,709 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2020-10-28 09:23:50,710 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 39 transitions. [2020-10-28 09:23:50,710 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 39 transitions. Word has length 19 [2020-10-28 09:23:50,711 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 09:23:50,711 INFO L481 AbstractCegarLoop]: Abstraction has 35 states and 39 transitions. [2020-10-28 09:23:50,711 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-28 09:23:50,711 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 39 transitions. [2020-10-28 09:23:50,713 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2020-10-28 09:23:50,713 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 09:23:50,713 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 09:23:50,713 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-28 09:23:50,713 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 09:23:50,714 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 09:23:50,714 INFO L82 PathProgramCache]: Analyzing trace with hash -1335518697, now seen corresponding path program 2 times [2020-10-28 09:23:50,714 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 09:23:50,715 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1013365099] [2020-10-28 09:23:50,715 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 09:23:50,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:23:50,732 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:23:50,745 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:23:50,840 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:23:50,956 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:23:51,231 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:23:51,232 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-10-28 09:23:51,232 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-28 09:23:51,232 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 504 [2020-10-28 09:23:51,232 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:23:51,232 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:23:51,233 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 09:23:51,233 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-28 09:23:51,233 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-28 09:23:51,233 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 09:23:51,309 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 09:23:51,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:23:51,314 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:23:51,319 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:23:51,320 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 09:23:51,320 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:23:51,320 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-28 09:23:51,320 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:23:51,320 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:23:51,321 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:23:51,321 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:23:51,321 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:23:51,321 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:23:51,325 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 09:23:51,326 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1013365099] [2020-10-28 09:23:51,326 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 09:23:51,326 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-28 09:23:51,327 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1939475355] [2020-10-28 09:23:51,327 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-28 09:23:51,327 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 09:23:51,328 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-28 09:23:51,328 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-10-28 09:23:51,328 INFO L87 Difference]: Start difference. First operand 35 states and 39 transitions. Second operand 6 states. [2020-10-28 09:23:51,569 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 09:23:51,569 INFO L93 Difference]: Finished difference Result 68 states and 79 transitions. [2020-10-28 09:23:51,570 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-28 09:23:51,570 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 22 [2020-10-28 09:23:51,570 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 09:23:51,571 INFO L225 Difference]: With dead ends: 68 [2020-10-28 09:23:51,571 INFO L226 Difference]: Without dead ends: 47 [2020-10-28 09:23:51,572 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-10-28 09:23:51,572 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states. [2020-10-28 09:23:51,579 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 43. [2020-10-28 09:23:51,580 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 43 states. [2020-10-28 09:23:51,581 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 48 transitions. [2020-10-28 09:23:51,581 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 48 transitions. Word has length 22 [2020-10-28 09:23:51,582 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 09:23:51,582 INFO L481 AbstractCegarLoop]: Abstraction has 43 states and 48 transitions. [2020-10-28 09:23:51,582 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-28 09:23:51,582 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 48 transitions. [2020-10-28 09:23:51,583 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-10-28 09:23:51,583 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 09:23:51,583 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 09:23:51,583 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-28 09:23:51,583 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 09:23:51,584 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 09:23:51,584 INFO L82 PathProgramCache]: Analyzing trace with hash 1870663876, now seen corresponding path program 3 times [2020-10-28 09:23:51,584 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 09:23:51,584 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1579779498] [2020-10-28 09:23:51,585 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 09:23:51,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:23:51,603 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:23:51,614 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:23:51,632 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:23:51,682 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:23:51,715 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:23:52,142 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:23:52,142 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 35 [2020-10-28 09:23:52,142 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-28 09:23:52,143 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 545 [2020-10-28 09:23:52,143 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:23:52,143 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:23:52,143 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 09:23:52,143 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-10-28 09:23:52,143 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 09:23:52,144 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:23:52,218 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 09:23:52,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:23:52,222 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:23:52,226 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:23:52,227 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 09:23:52,227 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:23:52,227 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-28 09:23:52,227 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:23:52,227 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:23:52,227 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:23:52,228 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:23:52,228 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:23:52,228 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:23:52,232 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 8 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-10-28 09:23:52,233 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1579779498] [2020-10-28 09:23:52,233 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 09:23:52,233 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-28 09:23:52,233 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [989526200] [2020-10-28 09:23:52,234 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-28 09:23:52,234 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 09:23:52,235 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-28 09:23:52,235 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-10-28 09:23:52,235 INFO L87 Difference]: Start difference. First operand 43 states and 48 transitions. Second operand 6 states. [2020-10-28 09:23:52,405 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 09:23:52,405 INFO L93 Difference]: Finished difference Result 76 states and 86 transitions. [2020-10-28 09:23:52,406 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-28 09:23:52,406 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 25 [2020-10-28 09:23:52,406 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 09:23:52,408 INFO L225 Difference]: With dead ends: 76 [2020-10-28 09:23:52,408 INFO L226 Difference]: Without dead ends: 50 [2020-10-28 09:23:52,409 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-10-28 09:23:52,409 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states. [2020-10-28 09:23:52,416 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 43. [2020-10-28 09:23:52,417 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 43 states. [2020-10-28 09:23:52,418 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 47 transitions. [2020-10-28 09:23:52,418 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 47 transitions. Word has length 25 [2020-10-28 09:23:52,418 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 09:23:52,418 INFO L481 AbstractCegarLoop]: Abstraction has 43 states and 47 transitions. [2020-10-28 09:23:52,419 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-28 09:23:52,419 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 47 transitions. [2020-10-28 09:23:52,419 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2020-10-28 09:23:52,420 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 09:23:52,420 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 09:23:52,420 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-28 09:23:52,420 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 09:23:52,420 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 09:23:52,421 INFO L82 PathProgramCache]: Analyzing trace with hash 2006980752, now seen corresponding path program 1 times [2020-10-28 09:23:52,421 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 09:23:52,421 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [732092709] [2020-10-28 09:23:52,421 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 09:23:52,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:23:52,437 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:23:52,464 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:23:52,898 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:23:52,898 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 36 [2020-10-28 09:23:52,898 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 09:23:52,898 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 466 [2020-10-28 09:23:52,899 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:23:52,899 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:23:52,899 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-28 09:23:52,899 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-28 09:23:52,899 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-28 09:23:52,899 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:23:52,980 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 09:23:52,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:23:52,984 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:23:52,989 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:23:52,989 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 09:23:52,989 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:23:52,990 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-28 09:23:52,990 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:23:52,990 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:23:52,990 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:23:52,990 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:23:52,990 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:23:52,991 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:23:52,995 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 09:23:52,995 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [732092709] [2020-10-28 09:23:52,995 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 09:23:52,996 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-28 09:23:52,996 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [699582570] [2020-10-28 09:23:52,996 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 09:23:52,996 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 09:23:52,997 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 09:23:52,997 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-10-28 09:23:52,997 INFO L87 Difference]: Start difference. First operand 43 states and 47 transitions. Second operand 7 states. [2020-10-28 09:23:53,255 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 09:23:53,256 INFO L93 Difference]: Finished difference Result 81 states and 92 transitions. [2020-10-28 09:23:53,257 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-28 09:23:53,258 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 26 [2020-10-28 09:23:53,258 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 09:23:53,259 INFO L225 Difference]: With dead ends: 81 [2020-10-28 09:23:53,259 INFO L226 Difference]: Without dead ends: 55 [2020-10-28 09:23:53,260 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2020-10-28 09:23:53,260 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55 states. [2020-10-28 09:23:53,267 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55 to 51. [2020-10-28 09:23:53,267 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 51 states. [2020-10-28 09:23:53,268 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 56 transitions. [2020-10-28 09:23:53,269 INFO L78 Accepts]: Start accepts. Automaton has 51 states and 56 transitions. Word has length 26 [2020-10-28 09:23:53,269 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 09:23:53,269 INFO L481 AbstractCegarLoop]: Abstraction has 51 states and 56 transitions. [2020-10-28 09:23:53,269 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 09:23:53,269 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 56 transitions. [2020-10-28 09:23:53,270 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2020-10-28 09:23:53,270 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 09:23:53,270 INFO L422 BasicCegarLoop]: trace histogram [5, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 09:23:53,271 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-28 09:23:53,271 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 09:23:53,271 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 09:23:53,271 INFO L82 PathProgramCache]: Analyzing trace with hash -1575653187, now seen corresponding path program 2 times [2020-10-28 09:23:53,272 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 09:23:53,272 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [756230310] [2020-10-28 09:23:53,272 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 09:23:53,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:23:53,306 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:23:53,323 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:23:54,021 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:23:54,021 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 39 [2020-10-28 09:23:54,021 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 09:23:54,021 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 721 [2020-10-28 09:23:54,022 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:23:54,022 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:23:54,022 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 09:23:54,022 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-28 09:23:54,022 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-10-28 09:23:54,023 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:23:54,154 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 09:23:54,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:23:54,158 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:23:54,162 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:23:54,162 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 09:23:54,163 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:23:54,163 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-28 09:23:54,163 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:23:54,163 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:23:54,164 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:23:54,164 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:23:54,164 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:23:54,164 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 09:23:54,170 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 26 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 09:23:54,171 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [756230310] [2020-10-28 09:23:54,171 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 09:23:54,171 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-28 09:23:54,171 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1303345996] [2020-10-28 09:23:54,172 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-28 09:23:54,172 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 09:23:54,173 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-28 09:23:54,173 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-10-28 09:23:54,173 INFO L87 Difference]: Start difference. First operand 51 states and 56 transitions. Second operand 8 states. [2020-10-28 09:23:54,479 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 09:23:54,479 INFO L93 Difference]: Finished difference Result 94 states and 107 transitions. [2020-10-28 09:23:54,480 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-28 09:23:54,480 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 29 [2020-10-28 09:23:54,480 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 09:23:54,481 INFO L225 Difference]: With dead ends: 94 [2020-10-28 09:23:54,481 INFO L226 Difference]: Without dead ends: 63 [2020-10-28 09:23:54,482 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2020-10-28 09:23:54,482 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63 states. [2020-10-28 09:23:54,489 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63 to 59. [2020-10-28 09:23:54,490 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 59 states. [2020-10-28 09:23:54,491 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59 states to 59 states and 65 transitions. [2020-10-28 09:23:54,491 INFO L78 Accepts]: Start accepts. Automaton has 59 states and 65 transitions. Word has length 29 [2020-10-28 09:23:54,491 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 09:23:54,491 INFO L481 AbstractCegarLoop]: Abstraction has 59 states and 65 transitions. [2020-10-28 09:23:54,492 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-28 09:23:54,492 INFO L276 IsEmpty]: Start isEmpty. Operand 59 states and 65 transitions. [2020-10-28 09:23:54,493 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2020-10-28 09:23:54,493 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 09:23:54,493 INFO L422 BasicCegarLoop]: trace histogram [6, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 09:23:54,493 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-28 09:23:54,493 INFO L429 AbstractCegarLoop]: === Iteration 8 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 09:23:54,494 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 09:23:54,494 INFO L82 PathProgramCache]: Analyzing trace with hash -1886024336, now seen corresponding path program 3 times [2020-10-28 09:23:54,494 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 09:23:54,494 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [928308245] [2020-10-28 09:23:54,495 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 09:23:54,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:23:54,514 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:23:54,530 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:23:55,644 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:23:55,645 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 42 [2020-10-28 09:23:55,645 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 09:23:55,645 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1136 [2020-10-28 09:23:55,646 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:23:55,646 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:23:55,646 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-28 09:23:55,647 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-28 09:23:55,647 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-10-28 09:23:55,647 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 09:23:55,836 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 09:23:55,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:23:55,839 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:23:55,843 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:23:55,844 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 09:23:55,844 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:23:55,844 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-28 09:23:55,844 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:23:55,845 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:23:55,845 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:23:55,845 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:23:55,845 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:23:55,845 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:23:55,852 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2020-10-28 09:23:55,853 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [928308245] [2020-10-28 09:23:55,853 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 09:23:55,853 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-10-28 09:23:55,853 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1130468444] [2020-10-28 09:23:55,854 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-28 09:23:55,854 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 09:23:55,855 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-28 09:23:55,855 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2020-10-28 09:23:55,855 INFO L87 Difference]: Start difference. First operand 59 states and 65 transitions. Second operand 9 states. [2020-10-28 09:23:56,424 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 09:23:56,424 INFO L93 Difference]: Finished difference Result 67 states and 72 transitions. [2020-10-28 09:23:56,425 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-28 09:23:56,425 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 32 [2020-10-28 09:23:56,425 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 09:23:56,426 INFO L225 Difference]: With dead ends: 67 [2020-10-28 09:23:56,426 INFO L226 Difference]: Without dead ends: 63 [2020-10-28 09:23:56,427 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=62, Invalid=210, Unknown=0, NotChecked=0, Total=272 [2020-10-28 09:23:56,427 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63 states. [2020-10-28 09:23:56,435 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63 to 63. [2020-10-28 09:23:56,435 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 63 states. [2020-10-28 09:23:56,436 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63 states to 63 states and 68 transitions. [2020-10-28 09:23:56,436 INFO L78 Accepts]: Start accepts. Automaton has 63 states and 68 transitions. Word has length 32 [2020-10-28 09:23:56,436 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 09:23:56,437 INFO L481 AbstractCegarLoop]: Abstraction has 63 states and 68 transitions. [2020-10-28 09:23:56,437 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-28 09:23:56,437 INFO L276 IsEmpty]: Start isEmpty. Operand 63 states and 68 transitions. [2020-10-28 09:23:56,438 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2020-10-28 09:23:56,438 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 09:23:56,438 INFO L422 BasicCegarLoop]: trace histogram [6, 5, 5, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 09:23:56,438 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-28 09:23:56,439 INFO L429 AbstractCegarLoop]: === Iteration 9 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 09:23:56,439 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 09:23:56,439 INFO L82 PathProgramCache]: Analyzing trace with hash -1309059124, now seen corresponding path program 1 times [2020-10-28 09:23:56,439 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 09:23:56,440 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [439588139] [2020-10-28 09:23:56,440 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 09:23:56,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:23:56,460 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:23:56,488 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:23:56,798 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:23:57,140 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:23:58,601 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:23:58,601 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 53 [2020-10-28 09:23:58,601 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-28 09:23:58,601 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2148 [2020-10-28 09:23:58,601 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:23:58,602 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:23:58,602 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-28 09:23:58,602 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-28 09:23:58,602 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-28 09:23:58,602 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:23:58,689 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 09:23:58,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:23:58,693 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:23:58,698 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:23:58,698 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 09:23:58,699 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:23:58,699 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-28 09:23:58,699 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:23:58,699 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:23:58,700 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:23:58,700 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:23:58,700 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:23:58,700 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 09:23:58,703 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2020-10-28 09:23:58,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:23:58,710 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:23:58,712 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:23:58,712 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 09:23:58,712 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:23:58,713 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-28 09:23:58,713 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:23:58,713 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:23:58,714 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:23:58,714 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-28 09:23:58,714 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:23:58,714 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 09:23:58,721 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 2 proven. 40 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-10-28 09:23:58,726 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [439588139] [2020-10-28 09:23:58,726 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 09:23:58,727 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-10-28 09:23:58,729 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2084305177] [2020-10-28 09:23:58,730 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-28 09:23:58,730 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 09:23:58,731 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-28 09:23:58,731 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2020-10-28 09:23:58,731 INFO L87 Difference]: Start difference. First operand 63 states and 68 transitions. Second operand 9 states. [2020-10-28 09:23:59,036 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 09:23:59,037 INFO L93 Difference]: Finished difference Result 115 states and 128 transitions. [2020-10-28 09:23:59,037 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-28 09:23:59,037 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 41 [2020-10-28 09:23:59,038 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 09:23:59,038 INFO L225 Difference]: With dead ends: 115 [2020-10-28 09:23:59,039 INFO L226 Difference]: Without dead ends: 75 [2020-10-28 09:23:59,039 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2020-10-28 09:23:59,042 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 75 states. [2020-10-28 09:23:59,062 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 75 to 71. [2020-10-28 09:23:59,063 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 71 states. [2020-10-28 09:23:59,064 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71 states to 71 states and 77 transitions. [2020-10-28 09:23:59,064 INFO L78 Accepts]: Start accepts. Automaton has 71 states and 77 transitions. Word has length 41 [2020-10-28 09:23:59,064 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 09:23:59,065 INFO L481 AbstractCegarLoop]: Abstraction has 71 states and 77 transitions. [2020-10-28 09:23:59,065 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-28 09:23:59,067 INFO L276 IsEmpty]: Start isEmpty. Operand 71 states and 77 transitions. [2020-10-28 09:23:59,072 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2020-10-28 09:23:59,072 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 09:23:59,072 INFO L422 BasicCegarLoop]: trace histogram [7, 6, 6, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 09:23:59,073 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-28 09:23:59,073 INFO L429 AbstractCegarLoop]: === Iteration 10 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 09:23:59,073 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 09:23:59,074 INFO L82 PathProgramCache]: Analyzing trace with hash 2043478015, now seen corresponding path program 2 times [2020-10-28 09:23:59,076 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 09:23:59,076 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1076007795] [2020-10-28 09:23:59,077 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 09:23:59,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:23:59,114 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:23:59,140 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:23:59,549 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:24:00,084 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:24:01,916 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:24:01,917 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 56 [2020-10-28 09:24:01,917 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-28 09:24:01,917 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2817 [2020-10-28 09:24:01,917 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:24:01,918 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:24:01,918 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-28 09:24:01,918 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-28 09:24:01,918 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 21 [2020-10-28 09:24:01,918 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:24:02,035 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 09:24:02,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:24:02,038 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:24:02,042 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:24:02,043 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 09:24:02,043 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:24:02,043 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-28 09:24:02,043 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:24:02,044 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:24:02,044 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:24:02,044 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:24:02,044 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:24:02,044 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 09:24:02,047 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-10-28 09:24:02,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:24:02,049 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:24:02,050 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:24:02,050 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 09:24:02,051 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:24:02,051 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-28 09:24:02,051 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:24:02,052 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:24:02,053 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:24:02,053 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-28 09:24:02,053 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:24:02,053 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-28 09:24:02,062 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 2 proven. 57 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-10-28 09:24:02,062 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1076007795] [2020-10-28 09:24:02,062 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 09:24:02,062 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-10-28 09:24:02,063 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1692328725] [2020-10-28 09:24:02,064 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-28 09:24:02,064 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 09:24:02,065 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-28 09:24:02,065 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2020-10-28 09:24:02,065 INFO L87 Difference]: Start difference. First operand 71 states and 77 transitions. Second operand 10 states. [2020-10-28 09:24:02,312 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 09:24:02,312 INFO L93 Difference]: Finished difference Result 128 states and 143 transitions. [2020-10-28 09:24:02,313 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-28 09:24:02,313 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 44 [2020-10-28 09:24:02,313 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 09:24:02,314 INFO L225 Difference]: With dead ends: 128 [2020-10-28 09:24:02,314 INFO L226 Difference]: Without dead ends: 83 [2020-10-28 09:24:02,315 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=48, Invalid=62, Unknown=0, NotChecked=0, Total=110 [2020-10-28 09:24:02,315 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 83 states. [2020-10-28 09:24:02,329 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 83 to 79. [2020-10-28 09:24:02,331 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 79 states. [2020-10-28 09:24:02,332 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 79 states to 79 states and 86 transitions. [2020-10-28 09:24:02,332 INFO L78 Accepts]: Start accepts. Automaton has 79 states and 86 transitions. Word has length 44 [2020-10-28 09:24:02,333 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 09:24:02,334 INFO L481 AbstractCegarLoop]: Abstraction has 79 states and 86 transitions. [2020-10-28 09:24:02,334 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-28 09:24:02,334 INFO L276 IsEmpty]: Start isEmpty. Operand 79 states and 86 transitions. [2020-10-28 09:24:02,335 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2020-10-28 09:24:02,335 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 09:24:02,335 INFO L422 BasicCegarLoop]: trace histogram [8, 7, 7, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 09:24:02,335 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-28 09:24:02,336 INFO L429 AbstractCegarLoop]: === Iteration 11 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 09:24:02,336 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 09:24:02,336 INFO L82 PathProgramCache]: Analyzing trace with hash -1987082516, now seen corresponding path program 3 times [2020-10-28 09:24:02,336 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 09:24:02,337 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [298456470] [2020-10-28 09:24:02,337 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 09:24:02,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:24:02,356 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:24:02,378 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:24:03,058 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:24:03,886 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:24:05,288 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:24:05,289 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 59 [2020-10-28 09:24:05,289 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-28 09:24:05,289 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2939 [2020-10-28 09:24:05,289 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:24:05,290 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:24:05,290 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-10-28 09:24:05,290 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-28 09:24:05,290 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 43 [2020-10-28 09:24:05,290 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:24:05,510 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 09:24:05,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:24:05,515 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:24:05,520 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:24:05,520 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 09:24:05,520 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:24:05,520 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-28 09:24:05,521 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:24:05,521 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:24:05,521 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:24:05,521 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:24:05,521 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:24:05,522 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:24:05,525 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-10-28 09:24:05,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:24:05,528 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:24:05,531 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:24:05,532 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 09:24:05,532 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:24:05,532 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-28 09:24:05,532 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:24:05,532 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:24:05,533 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 09:24:05,533 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:24:05,533 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 09:24:05,533 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:24:05,546 INFO L134 CoverageAnalysis]: Checked inductivity of 82 backedges. 2 proven. 35 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2020-10-28 09:24:05,547 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [298456470] [2020-10-28 09:24:05,547 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 09:24:05,547 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-10-28 09:24:05,547 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1185958617] [2020-10-28 09:24:05,548 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-28 09:24:05,548 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 09:24:05,549 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-28 09:24:05,549 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2020-10-28 09:24:05,549 INFO L87 Difference]: Start difference. First operand 79 states and 86 transitions. Second operand 11 states. [2020-10-28 09:24:06,110 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 09:24:06,111 INFO L93 Difference]: Finished difference Result 87 states and 93 transitions. [2020-10-28 09:24:06,111 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-28 09:24:06,111 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 47 [2020-10-28 09:24:06,112 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 09:24:06,112 INFO L225 Difference]: With dead ends: 87 [2020-10-28 09:24:06,113 INFO L226 Difference]: Without dead ends: 83 [2020-10-28 09:24:06,113 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 44 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=72, Invalid=308, Unknown=0, NotChecked=0, Total=380 [2020-10-28 09:24:06,114 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 83 states. [2020-10-28 09:24:06,122 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 83 to 83. [2020-10-28 09:24:06,122 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 83 states. [2020-10-28 09:24:06,123 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 83 states to 83 states and 89 transitions. [2020-10-28 09:24:06,123 INFO L78 Accepts]: Start accepts. Automaton has 83 states and 89 transitions. Word has length 47 [2020-10-28 09:24:06,123 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 09:24:06,123 INFO L481 AbstractCegarLoop]: Abstraction has 83 states and 89 transitions. [2020-10-28 09:24:06,124 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-28 09:24:06,124 INFO L276 IsEmpty]: Start isEmpty. Operand 83 states and 89 transitions. [2020-10-28 09:24:06,125 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2020-10-28 09:24:06,125 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 09:24:06,125 INFO L422 BasicCegarLoop]: trace histogram [8, 7, 7, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 09:24:06,125 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-28 09:24:06,125 INFO L429 AbstractCegarLoop]: === Iteration 12 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 09:24:06,126 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 09:24:06,126 INFO L82 PathProgramCache]: Analyzing trace with hash -1564849712, now seen corresponding path program 4 times [2020-10-28 09:24:06,126 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 09:24:06,126 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [936358286] [2020-10-28 09:24:06,126 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 09:24:06,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:24:06,149 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:24:06,170 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:24:06,447 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:24:06,683 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:24:06,908 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:24:08,686 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:24:11,141 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:24:11,141 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 70 [2020-10-28 09:24:11,142 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-28 09:24:11,142 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4999 [2020-10-28 09:24:11,142 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:24:11,142 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:24:11,142 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-28 09:24:11,142 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-28 09:24:11,143 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-10-28 09:24:11,143 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:24:11,258 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 09:24:11,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:24:11,262 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:24:11,265 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:24:11,265 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 09:24:11,266 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:24:11,266 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-28 09:24:11,266 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:24:11,266 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:24:11,266 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:24:11,267 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:24:11,267 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:24:11,267 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:24:11,269 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-10-28 09:24:11,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:24:11,271 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:24:11,273 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:24:11,273 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 09:24:11,273 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:24:11,273 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-28 09:24:11,273 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:24:11,273 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:24:11,274 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:24:11,274 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-28 09:24:11,274 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:24:11,274 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:24:11,293 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2020-10-28 09:24:11,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:24:11,295 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:24:11,296 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:24:11,297 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 09:24:11,297 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:24:11,297 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-28 09:24:11,297 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:24:11,297 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:24:11,297 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:24:11,297 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-28 09:24:11,298 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:24:11,298 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:24:11,306 INFO L134 CoverageAnalysis]: Checked inductivity of 96 backedges. 4 proven. 77 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2020-10-28 09:24:11,307 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [936358286] [2020-10-28 09:24:11,307 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 09:24:11,307 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-10-28 09:24:11,307 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1519906369] [2020-10-28 09:24:11,308 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-28 09:24:11,308 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 09:24:11,308 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-28 09:24:11,309 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-10-28 09:24:11,309 INFO L87 Difference]: Start difference. First operand 83 states and 89 transitions. Second operand 11 states. [2020-10-28 09:24:11,664 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 09:24:11,664 INFO L93 Difference]: Finished difference Result 149 states and 164 transitions. [2020-10-28 09:24:11,665 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-28 09:24:11,665 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 56 [2020-10-28 09:24:11,665 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 09:24:11,666 INFO L225 Difference]: With dead ends: 149 [2020-10-28 09:24:11,666 INFO L226 Difference]: Without dead ends: 95 [2020-10-28 09:24:11,668 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=58, Invalid=74, Unknown=0, NotChecked=0, Total=132 [2020-10-28 09:24:11,668 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 95 states. [2020-10-28 09:24:11,682 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 95 to 91. [2020-10-28 09:24:11,683 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 91 states. [2020-10-28 09:24:11,684 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 91 states to 91 states and 98 transitions. [2020-10-28 09:24:11,684 INFO L78 Accepts]: Start accepts. Automaton has 91 states and 98 transitions. Word has length 56 [2020-10-28 09:24:11,684 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 09:24:11,684 INFO L481 AbstractCegarLoop]: Abstraction has 91 states and 98 transitions. [2020-10-28 09:24:11,684 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-28 09:24:11,684 INFO L276 IsEmpty]: Start isEmpty. Operand 91 states and 98 transitions. [2020-10-28 09:24:11,686 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2020-10-28 09:24:11,686 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 09:24:11,686 INFO L422 BasicCegarLoop]: trace histogram [9, 8, 8, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 09:24:11,686 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-28 09:24:11,686 INFO L429 AbstractCegarLoop]: === Iteration 13 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 09:24:11,687 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 09:24:11,687 INFO L82 PathProgramCache]: Analyzing trace with hash -2077174467, now seen corresponding path program 5 times [2020-10-28 09:24:11,687 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 09:24:11,694 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1365340086] [2020-10-28 09:24:11,694 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 09:24:11,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:24:11,725 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:24:11,744 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:24:11,905 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:24:12,496 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:24:12,708 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:24:13,571 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:24:16,729 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:24:16,730 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 73 [2020-10-28 09:24:16,730 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-28 09:24:16,730 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5011 [2020-10-28 09:24:16,731 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:24:16,731 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:24:16,731 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 16 [2020-10-28 09:24:16,731 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-28 09:24:16,731 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 57 [2020-10-28 09:24:16,731 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 09:24:16,974 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 09:24:16,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:24:16,977 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:24:16,984 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:24:16,984 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 09:24:16,985 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:24:16,985 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-28 09:24:16,985 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:24:16,985 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:24:16,985 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:24:16,985 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:24:16,985 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:24:16,986 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:24:16,988 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2020-10-28 09:24:16,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:24:16,990 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:24:16,992 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:24:16,992 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 09:24:16,992 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:24:16,992 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 09:24:16,993 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:24:16,993 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:24:16,993 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 09:24:16,993 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:24:16,993 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 09:24:16,993 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:24:16,994 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-10-28 09:24:16,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:24:16,997 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:24:16,999 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:24:16,999 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 09:24:16,999 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:24:16,999 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 09:24:16,999 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:24:16,999 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:24:16,999 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 09:24:17,000 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:24:17,000 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 09:24:17,000 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:24:17,014 INFO L134 CoverageAnalysis]: Checked inductivity of 119 backedges. 4 proven. 66 refuted. 0 times theorem prover too weak. 49 trivial. 0 not checked. [2020-10-28 09:24:17,014 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1365340086] [2020-10-28 09:24:17,014 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 09:24:17,015 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-10-28 09:24:17,015 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [926366389] [2020-10-28 09:24:17,017 INFO L461 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-28 09:24:17,017 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 09:24:17,018 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-28 09:24:17,018 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=133, Unknown=0, NotChecked=0, Total=156 [2020-10-28 09:24:17,019 INFO L87 Difference]: Start difference. First operand 91 states and 98 transitions. Second operand 13 states. [2020-10-28 09:24:17,737 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 09:24:17,737 INFO L93 Difference]: Finished difference Result 99 states and 105 transitions. [2020-10-28 09:24:17,738 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-10-28 09:24:17,738 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 59 [2020-10-28 09:24:17,738 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 09:24:17,739 INFO L225 Difference]: With dead ends: 99 [2020-10-28 09:24:17,740 INFO L226 Difference]: Without dead ends: 95 [2020-10-28 09:24:17,740 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 60 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=88, Invalid=512, Unknown=0, NotChecked=0, Total=600 [2020-10-28 09:24:17,741 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 95 states. [2020-10-28 09:24:17,748 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 95 to 95. [2020-10-28 09:24:17,748 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 95 states. [2020-10-28 09:24:17,749 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 95 states to 95 states and 101 transitions. [2020-10-28 09:24:17,749 INFO L78 Accepts]: Start accepts. Automaton has 95 states and 101 transitions. Word has length 59 [2020-10-28 09:24:17,750 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 09:24:17,750 INFO L481 AbstractCegarLoop]: Abstraction has 95 states and 101 transitions. [2020-10-28 09:24:17,750 INFO L482 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-28 09:24:17,750 INFO L276 IsEmpty]: Start isEmpty. Operand 95 states and 101 transitions. [2020-10-28 09:24:17,751 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2020-10-28 09:24:17,751 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 09:24:17,751 INFO L422 BasicCegarLoop]: trace histogram [9, 8, 8, 4, 4, 4, 4, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 09:24:17,751 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-28 09:24:17,752 INFO L429 AbstractCegarLoop]: === Iteration 14 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 09:24:17,752 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 09:24:17,752 INFO L82 PathProgramCache]: Analyzing trace with hash -1192393057, now seen corresponding path program 6 times [2020-10-28 09:24:17,752 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 09:24:17,752 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [204581386] [2020-10-28 09:24:17,753 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 09:24:17,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:24:17,775 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:24:17,888 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:24:17,920 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:24:18,196 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:24:19,052 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:24:19,199 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:24:19,382 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:24:20,033 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:24:20,201 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:24:20,786 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:24:20,998 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:24:22,014 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:24:22,770 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:24:22,771 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 84 [2020-10-28 09:24:22,771 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 12 [2020-10-28 09:24:22,771 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5003 [2020-10-28 09:24:22,771 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:24:22,771 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:24:22,771 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-28 09:24:22,771 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-28 09:24:22,772 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 27 [2020-10-28 09:24:22,772 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:24:22,903 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 09:24:22,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:24:22,908 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:24:22,910 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:24:22,910 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 09:24:22,910 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:24:22,910 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 09:24:22,910 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:24:22,911 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:24:22,911 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:24:22,911 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:24:22,911 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:24:22,911 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:24:22,913 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2020-10-28 09:24:22,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:24:22,915 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:24:22,918 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:24:22,918 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 09:24:22,918 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:24:22,918 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 09:24:22,919 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:24:22,919 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:24:22,919 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:24:22,919 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-28 09:24:22,919 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:24:22,919 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:24:22,921 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-10-28 09:24:22,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:24:22,922 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:24:22,923 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:24:22,923 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 09:24:22,923 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:24:22,923 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-28 09:24:22,923 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:24:22,924 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:24:22,924 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:24:22,924 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-28 09:24:22,924 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:24:22,924 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:24:22,925 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2020-10-28 09:24:22,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:24:22,926 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:24:22,927 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:24:22,927 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 09:24:22,927 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:24:22,928 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-28 09:24:22,928 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:24:22,928 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:24:22,928 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:24:22,928 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-28 09:24:22,928 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:24:22,929 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:24:22,942 INFO L134 CoverageAnalysis]: Checked inductivity of 142 backedges. 6 proven. 100 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2020-10-28 09:24:22,942 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [204581386] [2020-10-28 09:24:22,943 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 09:24:22,943 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-10-28 09:24:22,946 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2072211854] [2020-10-28 09:24:22,946 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-28 09:24:22,947 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 09:24:22,947 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-28 09:24:22,947 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=75, Unknown=0, NotChecked=0, Total=132 [2020-10-28 09:24:22,948 INFO L87 Difference]: Start difference. First operand 95 states and 101 transitions. Second operand 12 states. [2020-10-28 09:24:23,302 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 09:24:23,303 INFO L93 Difference]: Finished difference Result 170 states and 185 transitions. [2020-10-28 09:24:23,303 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-28 09:24:23,303 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 68 [2020-10-28 09:24:23,304 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 09:24:23,305 INFO L225 Difference]: With dead ends: 170 [2020-10-28 09:24:23,305 INFO L226 Difference]: Without dead ends: 107 [2020-10-28 09:24:23,306 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=69, Invalid=87, Unknown=0, NotChecked=0, Total=156 [2020-10-28 09:24:23,307 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 107 states. [2020-10-28 09:24:23,328 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 107 to 103. [2020-10-28 09:24:23,328 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 103 states. [2020-10-28 09:24:23,329 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 103 states to 103 states and 110 transitions. [2020-10-28 09:24:23,329 INFO L78 Accepts]: Start accepts. Automaton has 103 states and 110 transitions. Word has length 68 [2020-10-28 09:24:23,330 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 09:24:23,330 INFO L481 AbstractCegarLoop]: Abstraction has 103 states and 110 transitions. [2020-10-28 09:24:23,330 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-28 09:24:23,330 INFO L276 IsEmpty]: Start isEmpty. Operand 103 states and 110 transitions. [2020-10-28 09:24:23,333 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2020-10-28 09:24:23,333 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 09:24:23,333 INFO L422 BasicCegarLoop]: trace histogram [10, 9, 9, 4, 4, 4, 4, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 09:24:23,333 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-10-28 09:24:23,333 INFO L429 AbstractCegarLoop]: === Iteration 15 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 09:24:23,334 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 09:24:23,334 INFO L82 PathProgramCache]: Analyzing trace with hash -877308276, now seen corresponding path program 7 times [2020-10-28 09:24:23,334 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 09:24:23,334 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [904774726] [2020-10-28 09:24:23,334 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 09:24:23,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:24:23,376 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:24:23,401 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:24:23,528 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:24:23,653 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:24:24,859 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:24:25,102 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:24:25,355 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:24:26,469 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:24:27,075 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:24:27,098 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:24:27,175 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:24:27,292 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:24:27,492 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:24:28,364 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:24:28,364 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 87 [2020-10-28 09:24:28,364 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 13 [2020-10-28 09:24:28,364 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-10-28 09:24:28,364 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:24:28,364 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:24:28,364 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-28 09:24:28,365 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-28 09:24:28,365 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-10-28 09:24:28,365 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:24:28,514 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 09:24:28,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:24:28,524 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:24:28,528 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:24:28,528 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 09:24:28,528 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:24:28,529 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-28 09:24:28,529 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:24:28,529 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:24:28,529 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:24:28,529 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:24:28,529 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:24:28,530 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:24:28,532 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-10-28 09:24:28,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:24:28,534 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:24:28,536 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:24:28,536 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 09:24:28,537 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:24:28,537 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 09:24:28,537 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:24:28,537 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:24:28,537 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:24:28,538 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-28 09:24:28,538 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:24:28,538 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 09:24:28,551 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2020-10-28 09:24:28,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:24:28,552 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:24:28,554 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:24:28,554 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 09:24:28,554 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:24:28,554 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-28 09:24:28,554 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:24:28,554 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:24:28,555 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:24:28,555 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-28 09:24:28,555 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:24:28,555 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:24:28,556 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2020-10-28 09:24:28,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:24:28,558 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:24:28,559 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:24:28,559 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 09:24:28,559 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:24:28,559 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-28 09:24:28,559 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:24:28,560 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:24:28,560 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:24:28,560 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-28 09:24:28,560 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:24:28,560 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:24:28,569 INFO L134 CoverageAnalysis]: Checked inductivity of 168 backedges. 6 proven. 126 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2020-10-28 09:24:28,569 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [904774726] [2020-10-28 09:24:28,569 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 09:24:28,569 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-10-28 09:24:28,570 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1385663419] [2020-10-28 09:24:28,570 INFO L461 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-28 09:24:28,570 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 09:24:28,571 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-28 09:24:28,571 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=88, Unknown=0, NotChecked=0, Total=156 [2020-10-28 09:24:28,571 INFO L87 Difference]: Start difference. First operand 103 states and 110 transitions. Second operand 13 states. [2020-10-28 09:24:28,927 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 09:24:28,927 INFO L93 Difference]: Finished difference Result 183 states and 200 transitions. [2020-10-28 09:24:28,928 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-10-28 09:24:28,928 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 71 [2020-10-28 09:24:28,928 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 09:24:28,929 INFO L225 Difference]: With dead ends: 183 [2020-10-28 09:24:28,929 INFO L226 Difference]: Without dead ends: 115 [2020-10-28 09:24:28,930 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=81, Invalid=101, Unknown=0, NotChecked=0, Total=182 [2020-10-28 09:24:28,931 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 115 states. [2020-10-28 09:24:28,940 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 115 to 111. [2020-10-28 09:24:28,940 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 111 states. [2020-10-28 09:24:28,941 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 111 states to 111 states and 119 transitions. [2020-10-28 09:24:28,942 INFO L78 Accepts]: Start accepts. Automaton has 111 states and 119 transitions. Word has length 71 [2020-10-28 09:24:28,942 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 09:24:28,942 INFO L481 AbstractCegarLoop]: Abstraction has 111 states and 119 transitions. [2020-10-28 09:24:28,942 INFO L482 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-28 09:24:28,942 INFO L276 IsEmpty]: Start isEmpty. Operand 111 states and 119 transitions. [2020-10-28 09:24:28,943 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2020-10-28 09:24:28,943 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 09:24:28,943 INFO L422 BasicCegarLoop]: trace histogram [11, 10, 10, 4, 4, 4, 4, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 09:24:28,943 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-10-28 09:24:28,944 INFO L429 AbstractCegarLoop]: === Iteration 16 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 09:24:28,944 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 09:24:28,944 INFO L82 PathProgramCache]: Analyzing trace with hash 1309860735, now seen corresponding path program 8 times [2020-10-28 09:24:28,944 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 09:24:28,944 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1167179603] [2020-10-28 09:24:28,945 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 09:24:28,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:24:28,964 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:24:29,043 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:24:29,174 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:24:29,243 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:24:29,828 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:24:30,062 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:24:31,537 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:24:32,054 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:24:32,850 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:24:33,798 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:24:33,963 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:24:33,963 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 90 [2020-10-28 09:24:33,963 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 10 [2020-10-28 09:24:33,963 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5005 [2020-10-28 09:24:33,964 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:24:33,964 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:24:33,964 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 19 [2020-10-28 09:24:33,964 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-28 09:24:33,964 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 74 [2020-10-28 09:24:33,964 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:24:34,243 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 09:24:34,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:24:34,246 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:24:34,251 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:24:34,251 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 09:24:34,251 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:24:34,251 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-28 09:24:34,251 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:24:34,252 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:24:34,252 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:24:34,252 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:24:34,252 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:24:34,252 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:24:34,254 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2020-10-28 09:24:34,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:24:34,257 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:24:34,259 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:24:34,260 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 09:24:34,260 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:24:34,260 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 09:24:34,260 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:24:34,260 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:24:34,260 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 09:24:34,260 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:24:34,261 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 09:24:34,261 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:24:34,262 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2020-10-28 09:24:34,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:24:34,265 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:24:34,267 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:24:34,267 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 09:24:34,267 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:24:34,267 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 09:24:34,267 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:24:34,267 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:24:34,268 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 09:24:34,268 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:24:34,268 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 09:24:34,268 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:24:34,269 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2020-10-28 09:24:34,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:24:34,272 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:24:34,276 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:24:34,276 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 09:24:34,276 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:24:34,276 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-28 09:24:34,277 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:24:34,277 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:24:34,277 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 09:24:34,277 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:24:34,277 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 09:24:34,277 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:24:34,297 INFO L134 CoverageAnalysis]: Checked inductivity of 197 backedges. 6 proven. 116 refuted. 0 times theorem prover too weak. 75 trivial. 0 not checked. [2020-10-28 09:24:34,298 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1167179603] [2020-10-28 09:24:34,300 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 09:24:34,301 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2020-10-28 09:24:34,301 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [248671412] [2020-10-28 09:24:34,301 INFO L461 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-28 09:24:34,302 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 09:24:34,302 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-28 09:24:34,302 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=183, Unknown=0, NotChecked=0, Total=210 [2020-10-28 09:24:34,303 INFO L87 Difference]: Start difference. First operand 111 states and 119 transitions. Second operand 15 states. [2020-10-28 09:24:35,245 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 09:24:35,246 INFO L93 Difference]: Finished difference Result 119 states and 126 transitions. [2020-10-28 09:24:35,246 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-10-28 09:24:35,246 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 74 [2020-10-28 09:24:35,247 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 09:24:35,247 INFO L225 Difference]: With dead ends: 119 [2020-10-28 09:24:35,248 INFO L226 Difference]: Without dead ends: 115 [2020-10-28 09:24:35,250 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 85 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=101, Invalid=711, Unknown=0, NotChecked=0, Total=812 [2020-10-28 09:24:35,251 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 115 states. [2020-10-28 09:24:35,269 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 115 to 115. [2020-10-28 09:24:35,271 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 115 states. [2020-10-28 09:24:35,272 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 115 states to 115 states and 122 transitions. [2020-10-28 09:24:35,272 INFO L78 Accepts]: Start accepts. Automaton has 115 states and 122 transitions. Word has length 74 [2020-10-28 09:24:35,273 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 09:24:35,273 INFO L481 AbstractCegarLoop]: Abstraction has 115 states and 122 transitions. [2020-10-28 09:24:35,273 INFO L482 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-28 09:24:35,273 INFO L276 IsEmpty]: Start isEmpty. Operand 115 states and 122 transitions. [2020-10-28 09:24:35,274 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2020-10-28 09:24:35,277 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 09:24:35,278 INFO L422 BasicCegarLoop]: trace histogram [11, 10, 10, 5, 5, 5, 5, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 09:24:35,278 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-10-28 09:24:35,278 INFO L429 AbstractCegarLoop]: === Iteration 17 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 09:24:35,278 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 09:24:35,278 INFO L82 PathProgramCache]: Analyzing trace with hash -328572259, now seen corresponding path program 9 times [2020-10-28 09:24:35,279 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 09:24:35,279 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1853313089] [2020-10-28 09:24:35,279 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 09:24:35,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:24:35,303 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:24:35,346 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:24:35,383 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:24:35,655 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:24:35,995 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:24:36,620 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:24:37,125 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:24:37,193 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:24:37,945 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:24:38,288 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:24:38,407 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:24:38,665 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:24:40,299 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:24:40,299 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 101 [2020-10-28 09:24:40,299 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 12 [2020-10-28 09:24:40,299 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-10-28 09:24:40,299 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:24:40,299 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:24:40,299 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-28 09:24:40,299 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-28 09:24:40,300 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 33 [2020-10-28 09:24:40,300 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:24:40,453 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 09:24:40,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:24:40,457 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:24:40,459 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:24:40,459 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 09:24:40,459 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:24:40,459 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 09:24:40,460 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:24:40,460 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:24:40,460 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:24:40,460 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:24:40,460 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:24:40,460 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:24:40,462 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2020-10-28 09:24:40,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:24:40,464 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:24:40,464 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:24:40,464 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 09:24:40,465 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:24:40,465 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-28 09:24:40,465 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:24:40,465 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:24:40,465 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:24:40,465 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-28 09:24:40,465 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:24:40,465 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:24:40,466 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2020-10-28 09:24:40,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:24:40,468 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:24:40,468 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:24:40,468 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 09:24:40,469 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:24:40,469 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-28 09:24:40,469 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:24:40,469 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:24:40,469 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:24:40,469 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-28 09:24:40,469 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:24:40,469 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:24:40,470 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2020-10-28 09:24:40,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:24:40,472 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:24:40,472 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:24:40,473 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 09:24:40,473 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:24:40,473 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-28 09:24:40,473 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:24:40,473 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:24:40,473 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:24:40,473 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-28 09:24:40,474 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:24:40,474 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:24:40,475 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2020-10-28 09:24:40,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:24:40,476 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:24:40,477 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:24:40,477 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 09:24:40,477 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:24:40,477 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-28 09:24:40,477 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:24:40,477 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:24:40,477 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:24:40,477 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-28 09:24:40,478 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:24:40,478 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:24:40,486 INFO L134 CoverageAnalysis]: Checked inductivity of 229 backedges. 8 proven. 155 refuted. 0 times theorem prover too weak. 66 trivial. 0 not checked. [2020-10-28 09:24:40,487 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1853313089] [2020-10-28 09:24:40,487 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 09:24:40,487 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2020-10-28 09:24:40,487 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1771018935] [2020-10-28 09:24:40,487 INFO L461 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-10-28 09:24:40,488 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 09:24:40,488 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-10-28 09:24:40,488 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=80, Invalid=102, Unknown=0, NotChecked=0, Total=182 [2020-10-28 09:24:40,488 INFO L87 Difference]: Start difference. First operand 115 states and 122 transitions. Second operand 14 states. [2020-10-28 09:24:40,903 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 09:24:40,903 INFO L93 Difference]: Finished difference Result 204 states and 221 transitions. [2020-10-28 09:24:40,904 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-28 09:24:40,904 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 83 [2020-10-28 09:24:40,904 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 09:24:40,905 INFO L225 Difference]: With dead ends: 204 [2020-10-28 09:24:40,905 INFO L226 Difference]: Without dead ends: 127 [2020-10-28 09:24:40,906 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=94, Invalid=116, Unknown=0, NotChecked=0, Total=210 [2020-10-28 09:24:40,906 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 127 states. [2020-10-28 09:24:40,916 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 127 to 123. [2020-10-28 09:24:40,917 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 123 states. [2020-10-28 09:24:40,917 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 123 states to 123 states and 131 transitions. [2020-10-28 09:24:40,918 INFO L78 Accepts]: Start accepts. Automaton has 123 states and 131 transitions. Word has length 83 [2020-10-28 09:24:40,918 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 09:24:40,918 INFO L481 AbstractCegarLoop]: Abstraction has 123 states and 131 transitions. [2020-10-28 09:24:40,918 INFO L482 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-10-28 09:24:40,918 INFO L276 IsEmpty]: Start isEmpty. Operand 123 states and 131 transitions. [2020-10-28 09:24:40,919 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2020-10-28 09:24:40,919 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 09:24:40,919 INFO L422 BasicCegarLoop]: trace histogram [12, 11, 11, 5, 5, 5, 5, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 09:24:40,919 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-10-28 09:24:40,920 INFO L429 AbstractCegarLoop]: === Iteration 18 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 09:24:40,920 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 09:24:40,920 INFO L82 PathProgramCache]: Analyzing trace with hash -650831088, now seen corresponding path program 10 times [2020-10-28 09:24:40,920 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 09:24:40,920 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1579278508] [2020-10-28 09:24:40,920 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 09:24:40,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:24:40,942 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:24:41,023 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:24:41,125 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:24:41,313 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:24:42,367 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:24:43,918 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:24:44,056 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:24:44,522 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:24:44,651 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:24:44,940 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:24:45,026 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:24:45,387 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:24:45,623 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:24:45,831 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:24:45,935 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:24:45,935 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 104 [2020-10-28 09:24:45,935 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 14 [2020-10-28 09:24:45,935 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-10-28 09:24:45,935 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:24:45,935 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:24:45,935 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-10-28 09:24:45,935 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-28 09:24:45,936 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 36 [2020-10-28 09:24:45,936 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:24:46,106 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 09:24:46,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:24:46,109 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:24:46,111 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:24:46,111 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 09:24:46,111 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:24:46,111 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 09:24:46,111 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:24:46,111 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:24:46,111 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:24:46,111 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:24:46,112 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:24:46,112 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:24:46,113 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-10-28 09:24:46,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:24:46,115 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:24:46,115 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:24:46,116 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 09:24:46,116 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:24:46,116 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-28 09:24:46,116 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:24:46,116 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:24:46,116 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:24:46,116 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-28 09:24:46,116 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:24:46,117 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:24:46,117 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2020-10-28 09:24:46,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:24:46,119 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:24:46,119 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:24:46,119 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 09:24:46,120 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:24:46,120 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-28 09:24:46,120 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:24:46,120 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:24:46,120 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:24:46,120 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-28 09:24:46,120 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:24:46,120 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:24:46,121 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2020-10-28 09:24:46,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:24:46,122 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:24:46,123 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:24:46,123 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 09:24:46,123 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:24:46,123 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-28 09:24:46,124 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:24:46,124 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:24:46,124 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:24:46,124 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-28 09:24:46,124 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:24:46,124 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:24:46,125 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2020-10-28 09:24:46,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:24:46,126 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:24:46,127 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:24:46,127 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 09:24:46,127 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:24:46,128 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-28 09:24:46,128 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:24:46,128 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:24:46,128 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:24:46,128 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-28 09:24:46,128 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:24:46,128 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:24:46,137 INFO L134 CoverageAnalysis]: Checked inductivity of 261 backedges. 8 proven. 187 refuted. 0 times theorem prover too weak. 66 trivial. 0 not checked. [2020-10-28 09:24:46,137 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1579278508] [2020-10-28 09:24:46,137 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 09:24:46,137 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2020-10-28 09:24:46,137 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [546785144] [2020-10-28 09:24:46,138 INFO L461 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-28 09:24:46,138 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 09:24:46,138 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-28 09:24:46,138 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=93, Invalid=117, Unknown=0, NotChecked=0, Total=210 [2020-10-28 09:24:46,139 INFO L87 Difference]: Start difference. First operand 123 states and 131 transitions. Second operand 15 states. [2020-10-28 09:24:46,582 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 09:24:46,582 INFO L93 Difference]: Finished difference Result 217 states and 236 transitions. [2020-10-28 09:24:46,582 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-10-28 09:24:46,583 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 86 [2020-10-28 09:24:46,583 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 09:24:46,585 INFO L225 Difference]: With dead ends: 217 [2020-10-28 09:24:46,585 INFO L226 Difference]: Without dead ends: 135 [2020-10-28 09:24:46,586 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=108, Invalid=132, Unknown=0, NotChecked=0, Total=240 [2020-10-28 09:24:46,586 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 135 states. [2020-10-28 09:24:46,597 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 135 to 131. [2020-10-28 09:24:46,597 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 131 states. [2020-10-28 09:24:46,598 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 131 states to 131 states and 140 transitions. [2020-10-28 09:24:46,598 INFO L78 Accepts]: Start accepts. Automaton has 131 states and 140 transitions. Word has length 86 [2020-10-28 09:24:46,598 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 09:24:46,598 INFO L481 AbstractCegarLoop]: Abstraction has 131 states and 140 transitions. [2020-10-28 09:24:46,598 INFO L482 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-28 09:24:46,598 INFO L276 IsEmpty]: Start isEmpty. Operand 131 states and 140 transitions. [2020-10-28 09:24:46,603 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2020-10-28 09:24:46,604 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 09:24:46,604 INFO L422 BasicCegarLoop]: trace histogram [13, 12, 12, 5, 5, 5, 5, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 09:24:46,604 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2020-10-28 09:24:46,604 INFO L429 AbstractCegarLoop]: === Iteration 19 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 09:24:46,604 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 09:24:46,605 INFO L82 PathProgramCache]: Analyzing trace with hash -1811699267, now seen corresponding path program 11 times [2020-10-28 09:24:46,605 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 09:24:46,605 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1648041502] [2020-10-28 09:24:46,605 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 09:24:46,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:24:46,626 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:24:46,663 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:24:46,802 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:24:46,968 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:24:48,020 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:24:48,442 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:24:48,690 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:24:50,237 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:24:50,776 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:24:51,058 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:24:51,133 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:24:51,472 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:24:51,625 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:24:51,625 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 107 [2020-10-28 09:24:51,625 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 12 [2020-10-28 09:24:51,625 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5006 [2020-10-28 09:24:51,626 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:24:51,626 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:24:51,626 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-10-28 09:24:51,626 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-28 09:24:51,626 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 39 [2020-10-28 09:24:51,626 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:24:51,820 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 09:24:51,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:24:51,824 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:24:51,826 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:24:51,826 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 09:24:51,826 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:24:51,827 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 09:24:51,827 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:24:51,827 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:24:51,827 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:24:51,827 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:24:51,827 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:24:51,827 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:24:51,828 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2020-10-28 09:24:51,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:24:51,830 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:24:51,831 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:24:51,831 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 09:24:51,831 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:24:51,831 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-28 09:24:51,831 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:24:51,831 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:24:51,832 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:24:51,832 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-28 09:24:51,832 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:24:51,832 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:24:51,833 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2020-10-28 09:24:51,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:24:51,834 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:24:51,835 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:24:51,835 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 09:24:51,835 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:24:51,835 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-28 09:24:51,835 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:24:51,835 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:24:51,835 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:24:51,836 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-28 09:24:51,836 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:24:51,836 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:24:51,837 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2020-10-28 09:24:51,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:24:51,838 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:24:51,839 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:24:51,839 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 09:24:51,839 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:24:51,839 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-28 09:24:51,839 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:24:51,839 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:24:51,839 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:24:51,840 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-28 09:24:51,840 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:24:51,840 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:24:51,841 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2020-10-28 09:24:51,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:24:51,842 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:24:51,843 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:24:51,843 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 09:24:51,843 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:24:51,843 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-28 09:24:51,843 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:24:51,843 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:24:51,843 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:24:51,844 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-28 09:24:51,844 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:24:51,844 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:24:51,852 INFO L134 CoverageAnalysis]: Checked inductivity of 296 backedges. 8 proven. 222 refuted. 0 times theorem prover too weak. 66 trivial. 0 not checked. [2020-10-28 09:24:51,853 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1648041502] [2020-10-28 09:24:51,853 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 09:24:51,853 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2020-10-28 09:24:51,853 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1960241713] [2020-10-28 09:24:51,853 INFO L461 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-10-28 09:24:51,854 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 09:24:51,854 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-10-28 09:24:51,854 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=107, Invalid=133, Unknown=0, NotChecked=0, Total=240 [2020-10-28 09:24:51,854 INFO L87 Difference]: Start difference. First operand 131 states and 140 transitions. Second operand 16 states. [2020-10-28 09:24:52,307 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 09:24:52,308 INFO L93 Difference]: Finished difference Result 230 states and 251 transitions. [2020-10-28 09:24:52,308 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-10-28 09:24:52,308 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 89 [2020-10-28 09:24:52,309 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 09:24:52,310 INFO L225 Difference]: With dead ends: 230 [2020-10-28 09:24:52,310 INFO L226 Difference]: Without dead ends: 143 [2020-10-28 09:24:52,311 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=123, Invalid=149, Unknown=0, NotChecked=0, Total=272 [2020-10-28 09:24:52,312 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 143 states. [2020-10-28 09:24:52,323 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 143 to 139. [2020-10-28 09:24:52,323 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 139 states. [2020-10-28 09:24:52,324 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 139 states to 139 states and 149 transitions. [2020-10-28 09:24:52,324 INFO L78 Accepts]: Start accepts. Automaton has 139 states and 149 transitions. Word has length 89 [2020-10-28 09:24:52,324 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 09:24:52,324 INFO L481 AbstractCegarLoop]: Abstraction has 139 states and 149 transitions. [2020-10-28 09:24:52,324 INFO L482 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-10-28 09:24:52,325 INFO L276 IsEmpty]: Start isEmpty. Operand 139 states and 149 transitions. [2020-10-28 09:24:52,325 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2020-10-28 09:24:52,325 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 09:24:52,325 INFO L422 BasicCegarLoop]: trace histogram [14, 13, 13, 5, 5, 5, 5, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 09:24:52,325 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2020-10-28 09:24:52,325 INFO L429 AbstractCegarLoop]: === Iteration 20 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 09:24:52,326 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 09:24:52,326 INFO L82 PathProgramCache]: Analyzing trace with hash 2136014832, now seen corresponding path program 12 times [2020-10-28 09:24:52,326 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 09:24:52,326 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1504877884] [2020-10-28 09:24:52,326 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 09:24:52,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:24:52,348 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:24:52,428 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:24:52,780 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:24:52,843 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:24:53,053 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:24:53,414 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:24:53,598 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:24:53,906 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:24:54,109 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:24:54,273 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:24:54,532 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:24:54,664 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:24:54,972 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:24:55,052 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:24:55,727 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:24:56,020 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:24:56,127 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:24:56,180 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:24:56,316 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:24:56,556 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:24:56,853 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:24:57,344 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:24:57,345 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 110 [2020-10-28 09:24:57,345 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 21 [2020-10-28 09:24:57,345 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5003 [2020-10-28 09:24:57,345 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:24:57,345 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:24:57,345 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-10-28 09:24:57,345 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-28 09:24:57,345 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 42 [2020-10-28 09:24:57,345 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:24:57,562 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 09:24:57,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:24:57,566 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:24:57,568 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:24:57,568 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 09:24:57,568 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:24:57,568 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 09:24:57,568 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:24:57,569 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:24:57,569 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:24:57,569 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:24:57,569 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:24:57,569 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:24:57,570 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2020-10-28 09:24:57,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:24:57,571 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:24:57,572 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:24:57,572 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 09:24:57,572 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:24:57,572 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-28 09:24:57,572 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:24:57,572 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:24:57,572 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:24:57,572 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-28 09:24:57,572 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:24:57,573 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:24:57,573 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2020-10-28 09:24:57,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:24:57,574 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:24:57,574 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:24:57,575 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 09:24:57,575 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:24:57,575 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-28 09:24:57,575 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:24:57,575 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:24:57,575 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:24:57,575 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-28 09:24:57,575 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:24:57,575 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:24:57,576 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2020-10-28 09:24:57,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:24:57,577 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:24:57,578 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:24:57,578 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 09:24:57,578 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:24:57,578 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-28 09:24:57,578 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:24:57,578 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:24:57,578 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:24:57,578 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-28 09:24:57,579 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:24:57,579 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:24:57,580 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2020-10-28 09:24:57,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:24:57,581 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:24:57,581 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:24:57,581 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 09:24:57,582 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:24:57,582 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-28 09:24:57,582 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:24:57,582 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:24:57,582 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:24:57,582 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-28 09:24:57,582 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:24:57,582 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:24:57,592 INFO L134 CoverageAnalysis]: Checked inductivity of 334 backedges. 8 proven. 260 refuted. 0 times theorem prover too weak. 66 trivial. 0 not checked. [2020-10-28 09:24:57,592 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1504877884] [2020-10-28 09:24:57,592 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 09:24:57,592 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17] total 17 [2020-10-28 09:24:57,592 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [42491053] [2020-10-28 09:24:57,593 INFO L461 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-28 09:24:57,593 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 09:24:57,593 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-28 09:24:57,593 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=122, Invalid=150, Unknown=0, NotChecked=0, Total=272 [2020-10-28 09:24:57,593 INFO L87 Difference]: Start difference. First operand 139 states and 149 transitions. Second operand 17 states. [2020-10-28 09:24:58,097 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 09:24:58,097 INFO L93 Difference]: Finished difference Result 243 states and 266 transitions. [2020-10-28 09:24:58,098 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-10-28 09:24:58,098 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 92 [2020-10-28 09:24:58,098 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 09:24:58,099 INFO L225 Difference]: With dead ends: 243 [2020-10-28 09:24:58,100 INFO L226 Difference]: Without dead ends: 151 [2020-10-28 09:24:58,100 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=139, Invalid=167, Unknown=0, NotChecked=0, Total=306 [2020-10-28 09:24:58,101 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 151 states. [2020-10-28 09:24:58,115 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 151 to 147. [2020-10-28 09:24:58,115 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 147 states. [2020-10-28 09:24:58,116 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 147 states to 147 states and 158 transitions. [2020-10-28 09:24:58,116 INFO L78 Accepts]: Start accepts. Automaton has 147 states and 158 transitions. Word has length 92 [2020-10-28 09:24:58,116 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 09:24:58,116 INFO L481 AbstractCegarLoop]: Abstraction has 147 states and 158 transitions. [2020-10-28 09:24:58,117 INFO L482 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-28 09:24:58,117 INFO L276 IsEmpty]: Start isEmpty. Operand 147 states and 158 transitions. [2020-10-28 09:24:58,117 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2020-10-28 09:24:58,117 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 09:24:58,118 INFO L422 BasicCegarLoop]: trace histogram [15, 14, 14, 5, 5, 5, 5, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 09:24:58,118 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2020-10-28 09:24:58,118 INFO L429 AbstractCegarLoop]: === Iteration 21 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 09:24:58,118 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 09:24:58,119 INFO L82 PathProgramCache]: Analyzing trace with hash -602728227, now seen corresponding path program 13 times [2020-10-28 09:24:58,119 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 09:24:58,119 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [322914977] [2020-10-28 09:24:58,119 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 09:24:58,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:24:58,138 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:24:58,206 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:24:58,343 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:24:58,714 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:24:59,399 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:25:01,249 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:25:01,549 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:25:01,767 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:25:02,143 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:25:02,340 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:25:02,693 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:25:03,141 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:25:03,141 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 113 [2020-10-28 09:25:03,141 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 11 [2020-10-28 09:25:03,141 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5008 [2020-10-28 09:25:03,141 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:25:03,141 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:25:03,141 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 16 [2020-10-28 09:25:03,141 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-28 09:25:03,142 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 45 [2020-10-28 09:25:03,142 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:25:03,367 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 09:25:03,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:25:03,370 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:25:03,372 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:25:03,372 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 09:25:03,373 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:25:03,373 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 09:25:03,373 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:25:03,373 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:25:03,373 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:25:03,373 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:25:03,373 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:25:03,373 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:25:03,375 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2020-10-28 09:25:03,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:25:03,379 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:25:03,380 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:25:03,380 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 09:25:03,380 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:25:03,380 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-28 09:25:03,380 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:25:03,380 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:25:03,380 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:25:03,380 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-28 09:25:03,381 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:25:03,381 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:25:03,382 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2020-10-28 09:25:03,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:25:03,384 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:25:03,385 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:25:03,386 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 09:25:03,386 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:25:03,386 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 09:25:03,386 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:25:03,386 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:25:03,386 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:25:03,386 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-28 09:25:03,386 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:25:03,387 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:25:03,388 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2020-10-28 09:25:03,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:25:03,389 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:25:03,391 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:25:03,391 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 09:25:03,391 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:25:03,391 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-28 09:25:03,391 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:25:03,391 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:25:03,391 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:25:03,391 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-28 09:25:03,392 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:25:03,392 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:25:03,393 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2020-10-28 09:25:03,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:25:03,395 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:25:03,396 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:25:03,396 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 09:25:03,396 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:25:03,396 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-28 09:25:03,396 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:25:03,396 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:25:03,396 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:25:03,396 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-28 09:25:03,397 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:25:03,397 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:25:03,408 INFO L134 CoverageAnalysis]: Checked inductivity of 375 backedges. 8 proven. 301 refuted. 0 times theorem prover too weak. 66 trivial. 0 not checked. [2020-10-28 09:25:03,408 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [322914977] [2020-10-28 09:25:03,408 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 09:25:03,408 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18] total 18 [2020-10-28 09:25:03,408 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [168582481] [2020-10-28 09:25:03,409 INFO L461 AbstractCegarLoop]: Interpolant automaton has 18 states [2020-10-28 09:25:03,412 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 09:25:03,412 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2020-10-28 09:25:03,412 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=138, Invalid=168, Unknown=0, NotChecked=0, Total=306 [2020-10-28 09:25:03,413 INFO L87 Difference]: Start difference. First operand 147 states and 158 transitions. Second operand 18 states. [2020-10-28 09:25:03,928 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 09:25:03,928 INFO L93 Difference]: Finished difference Result 256 states and 281 transitions. [2020-10-28 09:25:03,931 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-10-28 09:25:03,931 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 95 [2020-10-28 09:25:03,931 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 09:25:03,932 INFO L225 Difference]: With dead ends: 256 [2020-10-28 09:25:03,932 INFO L226 Difference]: Without dead ends: 159 [2020-10-28 09:25:03,933 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=156, Invalid=186, Unknown=0, NotChecked=0, Total=342 [2020-10-28 09:25:03,934 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 159 states. [2020-10-28 09:25:03,958 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 159 to 155. [2020-10-28 09:25:03,958 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 155 states. [2020-10-28 09:25:03,962 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 155 states to 155 states and 167 transitions. [2020-10-28 09:25:03,962 INFO L78 Accepts]: Start accepts. Automaton has 155 states and 167 transitions. Word has length 95 [2020-10-28 09:25:03,963 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 09:25:03,963 INFO L481 AbstractCegarLoop]: Abstraction has 155 states and 167 transitions. [2020-10-28 09:25:03,963 INFO L482 AbstractCegarLoop]: Interpolant automaton has 18 states. [2020-10-28 09:25:03,963 INFO L276 IsEmpty]: Start isEmpty. Operand 155 states and 167 transitions. [2020-10-28 09:25:03,967 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2020-10-28 09:25:03,967 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 09:25:03,967 INFO L422 BasicCegarLoop]: trace histogram [16, 15, 15, 5, 5, 5, 5, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 09:25:03,967 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2020-10-28 09:25:03,967 INFO L429 AbstractCegarLoop]: === Iteration 22 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 09:25:03,968 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 09:25:03,968 INFO L82 PathProgramCache]: Analyzing trace with hash 996523216, now seen corresponding path program 14 times [2020-10-28 09:25:03,968 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 09:25:03,968 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [289226524] [2020-10-28 09:25:03,968 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 09:25:03,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:25:03,996 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:25:04,127 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:25:04,354 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:25:05,172 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:25:05,355 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:25:06,135 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:25:06,368 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:25:07,637 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:25:07,869 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:25:08,076 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:25:08,414 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:25:08,602 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:25:08,941 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:25:09,016 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:25:09,016 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 116 [2020-10-28 09:25:09,016 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 13 [2020-10-28 09:25:09,016 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5028 [2020-10-28 09:25:09,016 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:25:09,016 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:25:09,016 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 17 [2020-10-28 09:25:09,017 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-28 09:25:09,017 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 48 [2020-10-28 09:25:09,017 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:25:09,253 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 09:25:09,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:25:09,255 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:25:09,258 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:25:09,258 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 09:25:09,258 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:25:09,258 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 09:25:09,258 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:25:09,258 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:25:09,258 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:25:09,259 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:25:09,259 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:25:09,259 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:25:09,260 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2020-10-28 09:25:09,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:25:09,263 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:25:09,264 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:25:09,264 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 09:25:09,265 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:25:09,265 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-28 09:25:09,265 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:25:09,265 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:25:09,265 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:25:09,265 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-28 09:25:09,265 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:25:09,265 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:25:09,266 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2020-10-28 09:25:09,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:25:09,267 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:25:09,268 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:25:09,268 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 09:25:09,268 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:25:09,268 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-28 09:25:09,269 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:25:09,269 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:25:09,269 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:25:09,269 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-28 09:25:09,269 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:25:09,269 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:25:09,270 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2020-10-28 09:25:09,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:25:09,272 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:25:09,273 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:25:09,273 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 09:25:09,273 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:25:09,273 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-28 09:25:09,273 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:25:09,274 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:25:09,274 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:25:09,274 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-28 09:25:09,274 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:25:09,275 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 09:25:09,276 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-10-28 09:25:09,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:25:09,277 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:25:09,278 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:25:09,278 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 09:25:09,278 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:25:09,279 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-28 09:25:09,279 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:25:09,279 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:25:09,279 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:25:09,279 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-28 09:25:09,279 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:25:09,279 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:25:09,291 INFO L134 CoverageAnalysis]: Checked inductivity of 419 backedges. 8 proven. 345 refuted. 0 times theorem prover too weak. 66 trivial. 0 not checked. [2020-10-28 09:25:09,291 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [289226524] [2020-10-28 09:25:09,291 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 09:25:09,291 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19] total 19 [2020-10-28 09:25:09,292 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1880372286] [2020-10-28 09:25:09,293 INFO L461 AbstractCegarLoop]: Interpolant automaton has 19 states [2020-10-28 09:25:09,296 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 09:25:09,297 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2020-10-28 09:25:09,297 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=155, Invalid=187, Unknown=0, NotChecked=0, Total=342 [2020-10-28 09:25:09,297 INFO L87 Difference]: Start difference. First operand 155 states and 167 transitions. Second operand 19 states. [2020-10-28 09:25:09,810 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 09:25:09,811 INFO L93 Difference]: Finished difference Result 269 states and 296 transitions. [2020-10-28 09:25:09,813 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2020-10-28 09:25:09,813 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 98 [2020-10-28 09:25:09,813 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 09:25:09,814 INFO L225 Difference]: With dead ends: 269 [2020-10-28 09:25:09,815 INFO L226 Difference]: Without dead ends: 167 [2020-10-28 09:25:09,816 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=174, Invalid=206, Unknown=0, NotChecked=0, Total=380 [2020-10-28 09:25:09,816 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 167 states. [2020-10-28 09:25:09,830 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 167 to 163. [2020-10-28 09:25:09,830 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 163 states. [2020-10-28 09:25:09,831 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 163 states to 163 states and 176 transitions. [2020-10-28 09:25:09,832 INFO L78 Accepts]: Start accepts. Automaton has 163 states and 176 transitions. Word has length 98 [2020-10-28 09:25:09,832 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 09:25:09,832 INFO L481 AbstractCegarLoop]: Abstraction has 163 states and 176 transitions. [2020-10-28 09:25:09,832 INFO L482 AbstractCegarLoop]: Interpolant automaton has 19 states. [2020-10-28 09:25:09,832 INFO L276 IsEmpty]: Start isEmpty. Operand 163 states and 176 transitions. [2020-10-28 09:25:09,833 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2020-10-28 09:25:09,833 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 09:25:09,833 INFO L422 BasicCegarLoop]: trace histogram [17, 16, 16, 5, 5, 5, 5, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 09:25:09,833 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2020-10-28 09:25:09,834 INFO L429 AbstractCegarLoop]: === Iteration 23 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 09:25:09,834 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 09:25:09,834 INFO L82 PathProgramCache]: Analyzing trace with hash 224047101, now seen corresponding path program 15 times [2020-10-28 09:25:09,834 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 09:25:09,834 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1445911179] [2020-10-28 09:25:09,834 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 09:25:09,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:25:09,857 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:25:09,923 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:25:10,179 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:25:10,473 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:25:10,814 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:25:11,140 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:25:11,505 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:25:13,682 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:25:14,057 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:25:14,242 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:25:14,348 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:25:14,736 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:25:14,857 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:25:14,857 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 119 [2020-10-28 09:25:14,857 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 12 [2020-10-28 09:25:14,857 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5008 [2020-10-28 09:25:14,857 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:25:14,857 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:25:14,857 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 18 [2020-10-28 09:25:14,857 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-28 09:25:14,858 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 51 [2020-10-28 09:25:14,858 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:25:15,135 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 09:25:15,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:25:15,138 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:25:15,140 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:25:15,140 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 09:25:15,141 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:25:15,141 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 09:25:15,141 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:25:15,141 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:25:15,141 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:25:15,141 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:25:15,141 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:25:15,141 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:25:15,143 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2020-10-28 09:25:15,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:25:15,144 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:25:15,144 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:25:15,144 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 09:25:15,144 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:25:15,144 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-28 09:25:15,144 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:25:15,144 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:25:15,145 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:25:15,145 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-28 09:25:15,145 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:25:15,145 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:25:15,145 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2020-10-28 09:25:15,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:25:15,146 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:25:15,147 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:25:15,147 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 09:25:15,147 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:25:15,147 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-28 09:25:15,147 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:25:15,147 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:25:15,147 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:25:15,147 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-28 09:25:15,147 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:25:15,147 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:25:15,148 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2020-10-28 09:25:15,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:25:15,149 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:25:15,150 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:25:15,150 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 09:25:15,150 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:25:15,150 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-28 09:25:15,150 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:25:15,151 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:25:15,151 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:25:15,151 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-28 09:25:15,151 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:25:15,151 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:25:15,152 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2020-10-28 09:25:15,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:25:15,153 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:25:15,154 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:25:15,154 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 09:25:15,154 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:25:15,154 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-28 09:25:15,154 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:25:15,155 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:25:15,155 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:25:15,155 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-28 09:25:15,155 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:25:15,155 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:25:15,167 INFO L134 CoverageAnalysis]: Checked inductivity of 466 backedges. 8 proven. 392 refuted. 0 times theorem prover too weak. 66 trivial. 0 not checked. [2020-10-28 09:25:15,167 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1445911179] [2020-10-28 09:25:15,167 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 09:25:15,167 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20] total 20 [2020-10-28 09:25:15,168 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1376721679] [2020-10-28 09:25:15,168 INFO L461 AbstractCegarLoop]: Interpolant automaton has 20 states [2020-10-28 09:25:15,168 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 09:25:15,169 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2020-10-28 09:25:15,169 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=173, Invalid=207, Unknown=0, NotChecked=0, Total=380 [2020-10-28 09:25:15,169 INFO L87 Difference]: Start difference. First operand 163 states and 176 transitions. Second operand 20 states. [2020-10-28 09:25:15,709 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 09:25:15,709 INFO L93 Difference]: Finished difference Result 282 states and 311 transitions. [2020-10-28 09:25:15,710 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-10-28 09:25:15,710 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 101 [2020-10-28 09:25:15,710 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 09:25:15,712 INFO L225 Difference]: With dead ends: 282 [2020-10-28 09:25:15,712 INFO L226 Difference]: Without dead ends: 175 [2020-10-28 09:25:15,713 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=193, Invalid=227, Unknown=0, NotChecked=0, Total=420 [2020-10-28 09:25:15,713 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 175 states. [2020-10-28 09:25:15,728 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 175 to 171. [2020-10-28 09:25:15,728 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 171 states. [2020-10-28 09:25:15,730 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 171 states to 171 states and 185 transitions. [2020-10-28 09:25:15,730 INFO L78 Accepts]: Start accepts. Automaton has 171 states and 185 transitions. Word has length 101 [2020-10-28 09:25:15,731 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 09:25:15,731 INFO L481 AbstractCegarLoop]: Abstraction has 171 states and 185 transitions. [2020-10-28 09:25:15,731 INFO L482 AbstractCegarLoop]: Interpolant automaton has 20 states. [2020-10-28 09:25:15,731 INFO L276 IsEmpty]: Start isEmpty. Operand 171 states and 185 transitions. [2020-10-28 09:25:15,732 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2020-10-28 09:25:15,732 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 09:25:15,732 INFO L422 BasicCegarLoop]: trace histogram [18, 17, 17, 5, 5, 5, 5, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 09:25:15,732 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2020-10-28 09:25:15,732 INFO L429 AbstractCegarLoop]: === Iteration 24 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 09:25:15,733 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 09:25:15,733 INFO L82 PathProgramCache]: Analyzing trace with hash -177122896, now seen corresponding path program 16 times [2020-10-28 09:25:15,733 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 09:25:15,733 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [384477579] [2020-10-28 09:25:15,733 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 09:25:15,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:25:15,757 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:25:15,841 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:25:16,047 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:25:17,034 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:25:17,915 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:25:19,417 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:25:19,644 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:25:20,204 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:25:20,744 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:25:21,164 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:25:21,164 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 122 [2020-10-28 09:25:21,164 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-10-28 09:25:21,164 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5417 [2020-10-28 09:25:21,164 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:25:21,165 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:25:21,165 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 19 [2020-10-28 09:25:21,165 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-28 09:25:21,165 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 54 [2020-10-28 09:25:21,165 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:25:21,492 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 09:25:21,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:25:21,495 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:25:21,497 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:25:21,497 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 09:25:21,497 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:25:21,497 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 09:25:21,497 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:25:21,497 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:25:21,498 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:25:21,498 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:25:21,498 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:25:21,498 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:25:21,499 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2020-10-28 09:25:21,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:25:21,500 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:25:21,500 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:25:21,501 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 09:25:21,501 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:25:21,501 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-28 09:25:21,501 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:25:21,501 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:25:21,501 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:25:21,501 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-28 09:25:21,501 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:25:21,501 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:25:21,502 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2020-10-28 09:25:21,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:25:21,503 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:25:21,503 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:25:21,504 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 09:25:21,504 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:25:21,504 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-28 09:25:21,504 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:25:21,504 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:25:21,504 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:25:21,504 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-28 09:25:21,504 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:25:21,504 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:25:21,505 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2020-10-28 09:25:21,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:25:21,506 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:25:21,506 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:25:21,506 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 09:25:21,506 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:25:21,506 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-28 09:25:21,507 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:25:21,507 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:25:21,507 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:25:21,507 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-28 09:25:21,507 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:25:21,507 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:25:21,508 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-10-28 09:25:21,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:25:21,508 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:25:21,509 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:25:21,509 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 09:25:21,509 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:25:21,509 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-28 09:25:21,509 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:25:21,509 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:25:21,509 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:25:21,510 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-28 09:25:21,510 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:25:21,510 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:25:21,521 INFO L134 CoverageAnalysis]: Checked inductivity of 516 backedges. 8 proven. 442 refuted. 0 times theorem prover too weak. 66 trivial. 0 not checked. [2020-10-28 09:25:21,521 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [384477579] [2020-10-28 09:25:21,522 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 09:25:21,522 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21] total 21 [2020-10-28 09:25:21,522 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1599251471] [2020-10-28 09:25:21,522 INFO L461 AbstractCegarLoop]: Interpolant automaton has 21 states [2020-10-28 09:25:21,522 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 09:25:21,523 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2020-10-28 09:25:21,523 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=192, Invalid=228, Unknown=0, NotChecked=0, Total=420 [2020-10-28 09:25:21,523 INFO L87 Difference]: Start difference. First operand 171 states and 185 transitions. Second operand 21 states. [2020-10-28 09:25:22,132 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 09:25:22,133 INFO L93 Difference]: Finished difference Result 295 states and 326 transitions. [2020-10-28 09:25:22,133 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2020-10-28 09:25:22,133 INFO L78 Accepts]: Start accepts. Automaton has 21 states. Word has length 104 [2020-10-28 09:25:22,134 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 09:25:22,135 INFO L225 Difference]: With dead ends: 295 [2020-10-28 09:25:22,135 INFO L226 Difference]: Without dead ends: 183 [2020-10-28 09:25:22,136 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=213, Invalid=249, Unknown=0, NotChecked=0, Total=462 [2020-10-28 09:25:22,137 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 183 states. [2020-10-28 09:25:22,151 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 183 to 179. [2020-10-28 09:25:22,151 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 179 states. [2020-10-28 09:25:22,152 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 179 states to 179 states and 194 transitions. [2020-10-28 09:25:22,155 INFO L78 Accepts]: Start accepts. Automaton has 179 states and 194 transitions. Word has length 104 [2020-10-28 09:25:22,155 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 09:25:22,155 INFO L481 AbstractCegarLoop]: Abstraction has 179 states and 194 transitions. [2020-10-28 09:25:22,155 INFO L482 AbstractCegarLoop]: Interpolant automaton has 21 states. [2020-10-28 09:25:22,155 INFO L276 IsEmpty]: Start isEmpty. Operand 179 states and 194 transitions. [2020-10-28 09:25:22,156 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2020-10-28 09:25:22,156 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 09:25:22,157 INFO L422 BasicCegarLoop]: trace histogram [19, 18, 18, 5, 5, 5, 5, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 09:25:22,158 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2020-10-28 09:25:22,158 INFO L429 AbstractCegarLoop]: === Iteration 25 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 09:25:22,159 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 09:25:22,159 INFO L82 PathProgramCache]: Analyzing trace with hash 1461481245, now seen corresponding path program 17 times [2020-10-28 09:25:22,159 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 09:25:22,159 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [344858914] [2020-10-28 09:25:22,159 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 09:25:22,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:25:22,185 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:25:22,361 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:25:22,538 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:25:22,840 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:25:23,212 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:25:25,556 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:25:26,889 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:25:27,181 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:25:27,181 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 125 [2020-10-28 09:25:27,181 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-28 09:25:27,181 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5005 [2020-10-28 09:25:27,181 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:25:27,181 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:25:27,182 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 20 [2020-10-28 09:25:27,182 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-28 09:25:27,182 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 57 [2020-10-28 09:25:27,182 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:25:27,512 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 09:25:27,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:25:27,515 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:25:27,516 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:25:27,516 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 09:25:27,516 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:25:27,517 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 09:25:27,517 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:25:27,517 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:25:27,517 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:25:27,517 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:25:27,517 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:25:27,517 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:25:27,518 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2020-10-28 09:25:27,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:25:27,519 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:25:27,520 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:25:27,520 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 09:25:27,520 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:25:27,520 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-28 09:25:27,520 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:25:27,520 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:25:27,521 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:25:27,521 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-28 09:25:27,521 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:25:27,521 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:25:27,522 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2020-10-28 09:25:27,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:25:27,523 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:25:27,523 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:25:27,524 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 09:25:27,524 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:25:27,524 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-28 09:25:27,524 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:25:27,524 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:25:27,524 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:25:27,524 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-28 09:25:27,524 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:25:27,524 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:25:27,525 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-10-28 09:25:27,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:25:27,526 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:25:27,527 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:25:27,527 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 09:25:27,527 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:25:27,527 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-28 09:25:27,527 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:25:27,527 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:25:27,527 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:25:27,527 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-28 09:25:27,527 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:25:27,527 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:25:27,528 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2020-10-28 09:25:27,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:25:27,529 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:25:27,530 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:25:27,530 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 09:25:27,530 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:25:27,530 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-28 09:25:27,530 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:25:27,531 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:25:27,531 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:25:27,531 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-28 09:25:27,531 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:25:27,531 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:25:27,540 INFO L134 CoverageAnalysis]: Checked inductivity of 569 backedges. 8 proven. 495 refuted. 0 times theorem prover too weak. 66 trivial. 0 not checked. [2020-10-28 09:25:27,540 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [344858914] [2020-10-28 09:25:27,540 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 09:25:27,540 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22] total 22 [2020-10-28 09:25:27,540 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1046802236] [2020-10-28 09:25:27,541 INFO L461 AbstractCegarLoop]: Interpolant automaton has 22 states [2020-10-28 09:25:27,541 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 09:25:27,541 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2020-10-28 09:25:27,541 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=212, Invalid=250, Unknown=0, NotChecked=0, Total=462 [2020-10-28 09:25:27,542 INFO L87 Difference]: Start difference. First operand 179 states and 194 transitions. Second operand 22 states. [2020-10-28 09:25:28,158 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 09:25:28,159 INFO L93 Difference]: Finished difference Result 308 states and 341 transitions. [2020-10-28 09:25:28,159 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2020-10-28 09:25:28,159 INFO L78 Accepts]: Start accepts. Automaton has 22 states. Word has length 107 [2020-10-28 09:25:28,160 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 09:25:28,161 INFO L225 Difference]: With dead ends: 308 [2020-10-28 09:25:28,161 INFO L226 Difference]: Without dead ends: 191 [2020-10-28 09:25:28,162 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=234, Invalid=272, Unknown=0, NotChecked=0, Total=506 [2020-10-28 09:25:28,162 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 191 states. [2020-10-28 09:25:28,174 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 191 to 187. [2020-10-28 09:25:28,174 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 187 states. [2020-10-28 09:25:28,176 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 187 states to 187 states and 203 transitions. [2020-10-28 09:25:28,176 INFO L78 Accepts]: Start accepts. Automaton has 187 states and 203 transitions. Word has length 107 [2020-10-28 09:25:28,176 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 09:25:28,176 INFO L481 AbstractCegarLoop]: Abstraction has 187 states and 203 transitions. [2020-10-28 09:25:28,176 INFO L482 AbstractCegarLoop]: Interpolant automaton has 22 states. [2020-10-28 09:25:28,176 INFO L276 IsEmpty]: Start isEmpty. Operand 187 states and 203 transitions. [2020-10-28 09:25:28,177 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2020-10-28 09:25:28,178 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 09:25:28,178 INFO L422 BasicCegarLoop]: trace histogram [20, 19, 19, 5, 5, 5, 5, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 09:25:28,178 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2020-10-28 09:25:28,178 INFO L429 AbstractCegarLoop]: === Iteration 26 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 09:25:28,178 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 09:25:28,179 INFO L82 PathProgramCache]: Analyzing trace with hash 519159440, now seen corresponding path program 18 times [2020-10-28 09:25:28,179 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 09:25:28,179 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1471744187] [2020-10-28 09:25:28,179 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 09:25:28,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:25:28,208 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:25:28,366 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:25:28,556 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:25:29,012 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:25:29,440 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:25:29,759 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:25:31,461 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:25:33,026 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:25:33,198 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:25:33,198 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 128 [2020-10-28 09:25:33,199 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-10-28 09:25:33,199 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-10-28 09:25:33,199 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:25:33,199 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:25:33,199 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 21 [2020-10-28 09:25:33,199 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-28 09:25:33,199 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 60 [2020-10-28 09:25:33,199 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:25:33,568 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 09:25:33,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:25:33,571 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:25:33,573 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:25:33,573 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 09:25:33,574 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:25:33,574 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 09:25:33,574 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:25:33,574 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:25:33,574 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:25:33,574 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:25:33,574 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:25:33,574 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:25:33,576 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2020-10-28 09:25:33,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:25:33,577 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:25:33,577 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:25:33,577 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 09:25:33,577 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:25:33,577 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-28 09:25:33,578 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:25:33,578 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:25:33,578 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:25:33,578 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-28 09:25:33,578 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:25:33,578 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:25:33,579 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2020-10-28 09:25:33,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:25:33,579 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:25:33,580 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:25:33,580 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 09:25:33,580 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:25:33,580 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-28 09:25:33,580 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:25:33,580 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:25:33,580 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:25:33,580 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-28 09:25:33,580 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:25:33,581 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:25:33,581 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2020-10-28 09:25:33,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:25:33,582 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:25:33,582 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:25:33,582 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 09:25:33,582 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:25:33,583 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-28 09:25:33,583 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:25:33,583 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:25:33,583 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:25:33,583 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-28 09:25:33,583 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:25:33,583 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:25:33,584 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-10-28 09:25:33,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:25:33,585 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:25:33,585 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:25:33,585 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 09:25:33,586 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:25:33,586 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-28 09:25:33,586 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:25:33,586 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:25:33,586 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:25:33,586 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-28 09:25:33,586 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:25:33,586 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:25:33,596 INFO L134 CoverageAnalysis]: Checked inductivity of 625 backedges. 8 proven. 551 refuted. 0 times theorem prover too weak. 66 trivial. 0 not checked. [2020-10-28 09:25:33,596 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1471744187] [2020-10-28 09:25:33,596 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 09:25:33,596 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23] total 23 [2020-10-28 09:25:33,596 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1499085287] [2020-10-28 09:25:33,597 INFO L461 AbstractCegarLoop]: Interpolant automaton has 23 states [2020-10-28 09:25:33,597 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 09:25:33,597 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2020-10-28 09:25:33,598 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=233, Invalid=273, Unknown=0, NotChecked=0, Total=506 [2020-10-28 09:25:33,598 INFO L87 Difference]: Start difference. First operand 187 states and 203 transitions. Second operand 23 states. [2020-10-28 09:25:34,191 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 09:25:34,191 INFO L93 Difference]: Finished difference Result 321 states and 356 transitions. [2020-10-28 09:25:34,191 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2020-10-28 09:25:34,192 INFO L78 Accepts]: Start accepts. Automaton has 23 states. Word has length 110 [2020-10-28 09:25:34,192 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 09:25:34,193 INFO L225 Difference]: With dead ends: 321 [2020-10-28 09:25:34,193 INFO L226 Difference]: Without dead ends: 199 [2020-10-28 09:25:34,194 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=256, Invalid=296, Unknown=0, NotChecked=0, Total=552 [2020-10-28 09:25:34,195 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 199 states. [2020-10-28 09:25:34,215 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 199 to 195. [2020-10-28 09:25:34,215 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 195 states. [2020-10-28 09:25:34,216 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 195 states to 195 states and 212 transitions. [2020-10-28 09:25:34,216 INFO L78 Accepts]: Start accepts. Automaton has 195 states and 212 transitions. Word has length 110 [2020-10-28 09:25:34,216 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 09:25:34,217 INFO L481 AbstractCegarLoop]: Abstraction has 195 states and 212 transitions. [2020-10-28 09:25:34,217 INFO L482 AbstractCegarLoop]: Interpolant automaton has 23 states. [2020-10-28 09:25:34,217 INFO L276 IsEmpty]: Start isEmpty. Operand 195 states and 212 transitions. [2020-10-28 09:25:34,218 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2020-10-28 09:25:34,218 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 09:25:34,218 INFO L422 BasicCegarLoop]: trace histogram [21, 20, 20, 5, 5, 5, 5, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 09:25:34,218 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2020-10-28 09:25:34,218 INFO L429 AbstractCegarLoop]: === Iteration 27 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 09:25:34,219 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 09:25:34,219 INFO L82 PathProgramCache]: Analyzing trace with hash -283486659, now seen corresponding path program 19 times [2020-10-28 09:25:34,219 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 09:25:34,219 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1768087381] [2020-10-28 09:25:34,219 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 09:25:34,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:25:34,271 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:25:34,745 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:25:34,899 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:25:35,533 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:25:36,642 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:25:38,136 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:25:38,406 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:25:38,556 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:25:38,686 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:25:38,990 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:25:39,259 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:25:39,260 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 131 [2020-10-28 09:25:39,260 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 10 [2020-10-28 09:25:39,260 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5003 [2020-10-28 09:25:39,260 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:25:39,260 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:25:39,260 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 22 [2020-10-28 09:25:39,260 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-28 09:25:39,260 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 63 [2020-10-28 09:25:39,260 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:25:39,650 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 09:25:39,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:25:39,654 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:25:39,655 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:25:39,655 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 09:25:39,655 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:25:39,656 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 09:25:39,656 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:25:39,656 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:25:39,656 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:25:39,656 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:25:39,656 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:25:39,656 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:25:39,657 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2020-10-28 09:25:39,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:25:39,658 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:25:39,659 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:25:39,659 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 09:25:39,659 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:25:39,659 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-28 09:25:39,659 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:25:39,659 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:25:39,659 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:25:39,659 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-28 09:25:39,659 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:25:39,659 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:25:39,660 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2020-10-28 09:25:39,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:25:39,661 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:25:39,661 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:25:39,661 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 09:25:39,661 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:25:39,662 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-28 09:25:39,662 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:25:39,662 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:25:39,662 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:25:39,662 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-28 09:25:39,662 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:25:39,662 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:25:39,663 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-10-28 09:25:39,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:25:39,664 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:25:39,665 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:25:39,665 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 09:25:39,665 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:25:39,665 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-28 09:25:39,665 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:25:39,665 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:25:39,665 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:25:39,666 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-28 09:25:39,666 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:25:39,666 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:25:39,667 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2020-10-28 09:25:39,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:25:39,668 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:25:39,668 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:25:39,668 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 09:25:39,669 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:25:39,669 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-28 09:25:39,669 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:25:39,669 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:25:39,669 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:25:39,669 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-28 09:25:39,669 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:25:39,669 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:25:39,681 INFO L134 CoverageAnalysis]: Checked inductivity of 684 backedges. 8 proven. 610 refuted. 0 times theorem prover too weak. 66 trivial. 0 not checked. [2020-10-28 09:25:39,682 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1768087381] [2020-10-28 09:25:39,682 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 09:25:39,682 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24] total 24 [2020-10-28 09:25:39,682 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [759951070] [2020-10-28 09:25:39,682 INFO L461 AbstractCegarLoop]: Interpolant automaton has 24 states [2020-10-28 09:25:39,682 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 09:25:39,683 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2020-10-28 09:25:39,683 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=255, Invalid=297, Unknown=0, NotChecked=0, Total=552 [2020-10-28 09:25:39,683 INFO L87 Difference]: Start difference. First operand 195 states and 212 transitions. Second operand 24 states. [2020-10-28 09:25:40,408 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 09:25:40,409 INFO L93 Difference]: Finished difference Result 334 states and 371 transitions. [2020-10-28 09:25:40,409 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2020-10-28 09:25:40,410 INFO L78 Accepts]: Start accepts. Automaton has 24 states. Word has length 113 [2020-10-28 09:25:40,410 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 09:25:40,411 INFO L225 Difference]: With dead ends: 334 [2020-10-28 09:25:40,411 INFO L226 Difference]: Without dead ends: 207 [2020-10-28 09:25:40,412 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=279, Invalid=321, Unknown=0, NotChecked=0, Total=600 [2020-10-28 09:25:40,414 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 207 states. [2020-10-28 09:25:40,431 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 207 to 203. [2020-10-28 09:25:40,431 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 203 states. [2020-10-28 09:25:40,432 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 203 states to 203 states and 221 transitions. [2020-10-28 09:25:40,432 INFO L78 Accepts]: Start accepts. Automaton has 203 states and 221 transitions. Word has length 113 [2020-10-28 09:25:40,433 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 09:25:40,433 INFO L481 AbstractCegarLoop]: Abstraction has 203 states and 221 transitions. [2020-10-28 09:25:40,433 INFO L482 AbstractCegarLoop]: Interpolant automaton has 24 states. [2020-10-28 09:25:40,433 INFO L276 IsEmpty]: Start isEmpty. Operand 203 states and 221 transitions. [2020-10-28 09:25:40,436 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2020-10-28 09:25:40,436 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 09:25:40,436 INFO L422 BasicCegarLoop]: trace histogram [22, 21, 21, 5, 5, 5, 5, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 09:25:40,436 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2020-10-28 09:25:40,436 INFO L429 AbstractCegarLoop]: === Iteration 28 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 09:25:40,436 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 09:25:40,437 INFO L82 PathProgramCache]: Analyzing trace with hash -1830485136, now seen corresponding path program 20 times [2020-10-28 09:25:40,437 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 09:25:40,437 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [537854872] [2020-10-28 09:25:40,437 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 09:25:40,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:25:40,484 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:25:40,576 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:25:41,154 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:25:42,304 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:25:42,731 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:25:43,525 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:25:43,792 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:25:45,480 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:25:45,480 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 134 [2020-10-28 09:25:45,480 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-28 09:25:45,480 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5012 [2020-10-28 09:25:45,480 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:25:45,480 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:25:45,480 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 23 [2020-10-28 09:25:45,480 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-28 09:25:45,481 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 66 [2020-10-28 09:25:45,481 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:25:45,902 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 09:25:45,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:25:45,904 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:25:45,906 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:25:45,907 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 09:25:45,907 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:25:45,907 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 09:25:45,907 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:25:45,907 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:25:45,907 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:25:45,907 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:25:45,907 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:25:45,908 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:25:45,909 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2020-10-28 09:25:45,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:25:45,914 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:25:45,914 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:25:45,914 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 09:25:45,915 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:25:45,915 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-28 09:25:45,915 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:25:45,915 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:25:45,915 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:25:45,915 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-28 09:25:45,915 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:25:45,916 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:25:45,919 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-10-28 09:25:45,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:25:45,920 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:25:45,920 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:25:45,920 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 09:25:45,921 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:25:45,921 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-28 09:25:45,921 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:25:45,921 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:25:45,921 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:25:45,921 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-28 09:25:45,921 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:25:45,921 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:25:45,922 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2020-10-28 09:25:45,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:25:45,924 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:25:45,924 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:25:45,924 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 09:25:45,925 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:25:45,925 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-28 09:25:45,925 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:25:45,925 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:25:45,925 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:25:45,925 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-28 09:25:45,925 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:25:45,925 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:25:45,926 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2020-10-28 09:25:45,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:25:45,927 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:25:45,928 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:25:45,928 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 09:25:45,928 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:25:45,928 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-28 09:25:45,928 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:25:45,928 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:25:45,928 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:25:45,928 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-28 09:25:45,928 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:25:45,928 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:25:45,939 INFO L134 CoverageAnalysis]: Checked inductivity of 746 backedges. 8 proven. 672 refuted. 0 times theorem prover too weak. 66 trivial. 0 not checked. [2020-10-28 09:25:45,939 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [537854872] [2020-10-28 09:25:45,939 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 09:25:45,939 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25] total 25 [2020-10-28 09:25:45,940 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1672984719] [2020-10-28 09:25:45,940 INFO L461 AbstractCegarLoop]: Interpolant automaton has 25 states [2020-10-28 09:25:45,940 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 09:25:45,940 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2020-10-28 09:25:45,941 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=278, Invalid=322, Unknown=0, NotChecked=0, Total=600 [2020-10-28 09:25:45,941 INFO L87 Difference]: Start difference. First operand 203 states and 221 transitions. Second operand 25 states. [2020-10-28 09:25:46,574 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 09:25:46,575 INFO L93 Difference]: Finished difference Result 347 states and 386 transitions. [2020-10-28 09:25:46,575 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2020-10-28 09:25:46,575 INFO L78 Accepts]: Start accepts. Automaton has 25 states. Word has length 116 [2020-10-28 09:25:46,576 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 09:25:46,577 INFO L225 Difference]: With dead ends: 347 [2020-10-28 09:25:46,577 INFO L226 Difference]: Without dead ends: 215 [2020-10-28 09:25:46,578 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=303, Invalid=347, Unknown=0, NotChecked=0, Total=650 [2020-10-28 09:25:46,579 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 215 states. [2020-10-28 09:25:46,592 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 215 to 211. [2020-10-28 09:25:46,592 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 211 states. [2020-10-28 09:25:46,594 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 211 states to 211 states and 230 transitions. [2020-10-28 09:25:46,594 INFO L78 Accepts]: Start accepts. Automaton has 211 states and 230 transitions. Word has length 116 [2020-10-28 09:25:46,594 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 09:25:46,595 INFO L481 AbstractCegarLoop]: Abstraction has 211 states and 230 transitions. [2020-10-28 09:25:46,595 INFO L482 AbstractCegarLoop]: Interpolant automaton has 25 states. [2020-10-28 09:25:46,595 INFO L276 IsEmpty]: Start isEmpty. Operand 211 states and 230 transitions. [2020-10-28 09:25:46,596 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 120 [2020-10-28 09:25:46,596 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 09:25:46,596 INFO L422 BasicCegarLoop]: trace histogram [23, 22, 22, 5, 5, 5, 5, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 09:25:46,596 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2020-10-28 09:25:46,596 INFO L429 AbstractCegarLoop]: === Iteration 29 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 09:25:46,597 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 09:25:46,597 INFO L82 PathProgramCache]: Analyzing trace with hash 831939933, now seen corresponding path program 21 times [2020-10-28 09:25:46,597 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 09:25:46,597 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1563732139] [2020-10-28 09:25:46,597 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 09:25:46,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:25:46,632 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:25:47,174 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:25:47,456 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:25:47,696 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:25:49,540 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:25:49,892 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:25:50,360 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:25:50,708 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:25:51,619 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:25:51,620 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 137 [2020-10-28 09:25:51,620 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-10-28 09:25:51,620 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5003 [2020-10-28 09:25:51,620 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:25:51,620 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:25:51,620 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 32 [2020-10-28 09:25:51,620 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-28 09:25:51,620 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 121 [2020-10-28 09:25:51,620 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:25:52,146 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 09:25:52,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:25:52,149 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:25:52,152 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:25:52,152 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 09:25:52,152 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:25:52,152 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 09:25:52,152 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:25:52,152 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:25:52,153 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:25:52,153 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:25:52,153 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:25:52,153 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:25:52,155 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2020-10-28 09:25:52,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:25:52,157 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:25:52,159 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:25:52,159 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 09:25:52,159 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:25:52,159 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 09:25:52,159 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:25:52,160 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:25:52,160 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 09:25:52,160 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:25:52,160 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 09:25:52,160 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:25:52,161 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2020-10-28 09:25:52,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:25:52,163 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:25:52,165 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:25:52,165 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 09:25:52,165 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:25:52,165 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-28 09:25:52,165 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:25:52,165 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:25:52,165 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 09:25:52,166 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:25:52,166 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 09:25:52,166 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:25:52,167 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-10-28 09:25:52,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:25:52,168 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:25:52,170 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:25:52,170 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 09:25:52,170 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:25:52,170 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-28 09:25:52,170 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:25:52,170 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:25:52,171 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 09:25:52,171 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:25:52,171 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 09:25:52,171 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:25:52,172 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2020-10-28 09:25:52,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:25:52,173 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:25:52,175 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:25:52,175 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 09:25:52,175 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:25:52,176 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 09:25:52,176 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:25:52,176 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:25:52,176 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 09:25:52,176 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:25:52,176 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 09:25:52,176 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:25:52,217 INFO L134 CoverageAnalysis]: Checked inductivity of 811 backedges. 8 proven. 320 refuted. 0 times theorem prover too weak. 483 trivial. 0 not checked. [2020-10-28 09:25:52,217 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1563732139] [2020-10-28 09:25:52,217 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 09:25:52,218 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17] total 17 [2020-10-28 09:25:52,218 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1981274554] [2020-10-28 09:25:52,219 INFO L461 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-28 09:25:52,220 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 09:25:52,220 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-28 09:25:52,220 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2020-10-28 09:25:52,221 INFO L87 Difference]: Start difference. First operand 211 states and 230 transitions. Second operand 17 states. [2020-10-28 09:25:53,400 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 09:25:53,400 INFO L93 Difference]: Finished difference Result 219 states and 237 transitions. [2020-10-28 09:25:53,401 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2020-10-28 09:25:53,401 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 119 [2020-10-28 09:25:53,401 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 09:25:53,403 INFO L225 Difference]: With dead ends: 219 [2020-10-28 09:25:53,403 INFO L226 Difference]: Without dead ends: 215 [2020-10-28 09:25:53,404 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 114 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=114, Invalid=942, Unknown=0, NotChecked=0, Total=1056 [2020-10-28 09:25:53,406 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 215 states. [2020-10-28 09:25:53,421 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 215 to 215. [2020-10-28 09:25:53,422 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 215 states. [2020-10-28 09:25:53,423 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 215 states to 215 states and 233 transitions. [2020-10-28 09:25:53,424 INFO L78 Accepts]: Start accepts. Automaton has 215 states and 233 transitions. Word has length 119 [2020-10-28 09:25:53,424 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 09:25:53,424 INFO L481 AbstractCegarLoop]: Abstraction has 215 states and 233 transitions. [2020-10-28 09:25:53,424 INFO L482 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-28 09:25:53,424 INFO L276 IsEmpty]: Start isEmpty. Operand 215 states and 233 transitions. [2020-10-28 09:25:53,425 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2020-10-28 09:25:53,425 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 09:25:53,426 INFO L422 BasicCegarLoop]: trace histogram [23, 22, 22, 6, 6, 6, 6, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 09:25:53,426 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2020-10-28 09:25:53,426 INFO L429 AbstractCegarLoop]: === Iteration 30 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 09:25:53,426 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 09:25:53,426 INFO L82 PathProgramCache]: Analyzing trace with hash 637016703, now seen corresponding path program 22 times [2020-10-28 09:25:53,427 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 09:25:53,427 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2030260186] [2020-10-28 09:25:53,427 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 09:25:53,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:25:53,463 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:25:53,691 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:25:54,312 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:25:55,101 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:25:55,753 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:25:58,528 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:25:58,528 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 148 [2020-10-28 09:25:58,528 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-28 09:25:58,528 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5078 [2020-10-28 09:25:58,528 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:25:58,529 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:25:58,529 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 24 [2020-10-28 09:25:58,529 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-28 09:25:58,529 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 69 [2020-10-28 09:25:58,529 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:25:58,984 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 09:25:58,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:25:58,986 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:25:58,988 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:25:58,989 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 09:25:58,989 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:25:58,989 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 09:25:58,989 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:25:58,989 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:25:58,989 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:25:58,989 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:25:58,989 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:25:58,989 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:25:58,991 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2020-10-28 09:25:58,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:25:58,992 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:25:58,993 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:25:58,993 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 09:25:58,993 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:25:58,993 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-28 09:25:58,993 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:25:58,993 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:25:58,993 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:25:58,993 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-28 09:25:58,993 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:25:58,994 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:25:58,994 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2020-10-28 09:25:58,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:25:58,995 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:25:58,995 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:25:58,995 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 09:25:58,995 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:25:58,996 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-28 09:25:58,996 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:25:58,996 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:25:58,996 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:25:58,996 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-28 09:25:58,996 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:25:58,996 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:25:58,997 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-10-28 09:25:58,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:25:58,997 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:25:58,998 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:25:58,998 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 09:25:58,998 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:25:58,998 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-28 09:25:58,998 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:25:58,998 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:25:58,998 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:25:58,998 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-28 09:25:58,998 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:25:58,998 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:25:58,999 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2020-10-28 09:25:58,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:25:59,000 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:25:59,000 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:25:59,000 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 09:25:59,000 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:25:59,000 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-28 09:25:59,000 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:25:59,001 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:25:59,001 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:25:59,001 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-28 09:25:59,001 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:25:59,001 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:25:59,001 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2020-10-28 09:25:59,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:25:59,002 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:25:59,003 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:25:59,003 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 09:25:59,003 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:25:59,003 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-28 09:25:59,003 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:25:59,003 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:25:59,003 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:25:59,003 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-28 09:25:59,003 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:25:59,003 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:25:59,015 INFO L134 CoverageAnalysis]: Checked inductivity of 852 backedges. 10 proven. 737 refuted. 0 times theorem prover too weak. 105 trivial. 0 not checked. [2020-10-28 09:25:59,015 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2030260186] [2020-10-28 09:25:59,015 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 09:25:59,015 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [26] total 26 [2020-10-28 09:25:59,015 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1637041951] [2020-10-28 09:25:59,016 INFO L461 AbstractCegarLoop]: Interpolant automaton has 26 states [2020-10-28 09:25:59,016 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 09:25:59,016 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2020-10-28 09:25:59,017 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=302, Invalid=348, Unknown=0, NotChecked=0, Total=650 [2020-10-28 09:25:59,017 INFO L87 Difference]: Start difference. First operand 215 states and 233 transitions. Second operand 26 states. [2020-10-28 09:25:59,754 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 09:25:59,755 INFO L93 Difference]: Finished difference Result 368 states and 407 transitions. [2020-10-28 09:25:59,755 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2020-10-28 09:25:59,755 INFO L78 Accepts]: Start accepts. Automaton has 26 states. Word has length 128 [2020-10-28 09:25:59,756 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 09:25:59,758 INFO L225 Difference]: With dead ends: 368 [2020-10-28 09:25:59,758 INFO L226 Difference]: Without dead ends: 227 [2020-10-28 09:25:59,759 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=328, Invalid=374, Unknown=0, NotChecked=0, Total=702 [2020-10-28 09:25:59,759 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 227 states. [2020-10-28 09:25:59,774 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 227 to 223. [2020-10-28 09:25:59,774 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 223 states. [2020-10-28 09:25:59,775 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 223 states to 223 states and 242 transitions. [2020-10-28 09:25:59,775 INFO L78 Accepts]: Start accepts. Automaton has 223 states and 242 transitions. Word has length 128 [2020-10-28 09:25:59,775 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 09:25:59,776 INFO L481 AbstractCegarLoop]: Abstraction has 223 states and 242 transitions. [2020-10-28 09:25:59,776 INFO L482 AbstractCegarLoop]: Interpolant automaton has 26 states. [2020-10-28 09:25:59,776 INFO L276 IsEmpty]: Start isEmpty. Operand 223 states and 242 transitions. [2020-10-28 09:25:59,777 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2020-10-28 09:25:59,777 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 09:25:59,777 INFO L422 BasicCegarLoop]: trace histogram [24, 23, 23, 6, 6, 6, 6, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 09:25:59,777 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2020-10-28 09:25:59,778 INFO L429 AbstractCegarLoop]: === Iteration 31 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 09:25:59,778 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 09:25:59,778 INFO L82 PathProgramCache]: Analyzing trace with hash -1209204500, now seen corresponding path program 23 times [2020-10-28 09:25:59,778 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 09:25:59,778 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1701804160] [2020-10-28 09:25:59,778 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 09:25:59,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:25:59,812 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:25:59,950 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:26:00,745 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:26:02,136 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:26:03,520 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:26:04,803 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:26:04,804 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 151 [2020-10-28 09:26:04,804 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-28 09:26:04,804 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5005 [2020-10-28 09:26:04,804 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:26:04,804 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:26:04,804 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 25 [2020-10-28 09:26:04,804 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-28 09:26:04,804 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 72 [2020-10-28 09:26:04,804 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:26:05,305 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 09:26:05,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:26:05,311 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:26:05,313 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:26:05,314 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 09:26:05,314 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:26:05,314 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-28 09:26:05,314 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:26:05,314 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:26:05,314 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:26:05,315 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:26:05,315 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:26:05,315 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:26:05,317 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2020-10-28 09:26:05,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:26:05,318 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:26:05,319 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:26:05,319 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 09:26:05,319 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:26:05,319 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-28 09:26:05,320 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:26:05,320 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:26:05,320 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:26:05,320 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-28 09:26:05,320 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:26:05,321 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:26:05,322 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-10-28 09:26:05,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:26:05,323 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:26:05,324 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:26:05,324 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 09:26:05,325 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:26:05,325 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-28 09:26:05,325 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:26:05,325 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:26:05,326 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:26:05,326 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-28 09:26:05,326 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:26:05,326 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:26:05,327 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2020-10-28 09:26:05,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:26:05,328 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:26:05,329 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:26:05,330 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 09:26:05,330 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:26:05,330 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-28 09:26:05,330 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:26:05,330 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:26:05,330 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:26:05,330 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-28 09:26:05,331 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:26:05,331 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:26:05,333 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2020-10-28 09:26:05,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:26:05,335 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:26:05,335 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:26:05,335 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 09:26:05,336 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:26:05,336 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-28 09:26:05,336 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:26:05,336 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:26:05,336 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:26:05,336 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-28 09:26:05,336 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:26:05,337 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:26:05,338 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2020-10-28 09:26:05,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:26:05,339 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:26:05,340 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:26:05,340 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 09:26:05,340 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:26:05,341 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-28 09:26:05,341 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:26:05,341 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:26:05,341 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:26:05,341 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-28 09:26:05,342 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:26:05,342 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 09:26:05,366 INFO L134 CoverageAnalysis]: Checked inductivity of 920 backedges. 10 proven. 805 refuted. 0 times theorem prover too weak. 105 trivial. 0 not checked. [2020-10-28 09:26:05,367 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1701804160] [2020-10-28 09:26:05,367 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 09:26:05,367 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [27] total 27 [2020-10-28 09:26:05,367 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [374610633] [2020-10-28 09:26:05,368 INFO L461 AbstractCegarLoop]: Interpolant automaton has 27 states [2020-10-28 09:26:05,368 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 09:26:05,369 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2020-10-28 09:26:05,369 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=327, Invalid=375, Unknown=0, NotChecked=0, Total=702 [2020-10-28 09:26:05,369 INFO L87 Difference]: Start difference. First operand 223 states and 242 transitions. Second operand 27 states. [2020-10-28 09:26:06,075 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 09:26:06,076 INFO L93 Difference]: Finished difference Result 381 states and 422 transitions. [2020-10-28 09:26:06,076 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2020-10-28 09:26:06,077 INFO L78 Accepts]: Start accepts. Automaton has 27 states. Word has length 131 [2020-10-28 09:26:06,077 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 09:26:06,079 INFO L225 Difference]: With dead ends: 381 [2020-10-28 09:26:06,080 INFO L226 Difference]: Without dead ends: 235 [2020-10-28 09:26:06,081 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=354, Invalid=402, Unknown=0, NotChecked=0, Total=756 [2020-10-28 09:26:06,081 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 235 states. [2020-10-28 09:26:06,096 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 235 to 231. [2020-10-28 09:26:06,096 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 231 states. [2020-10-28 09:26:06,097 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 231 states to 231 states and 251 transitions. [2020-10-28 09:26:06,097 INFO L78 Accepts]: Start accepts. Automaton has 231 states and 251 transitions. Word has length 131 [2020-10-28 09:26:06,097 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 09:26:06,098 INFO L481 AbstractCegarLoop]: Abstraction has 231 states and 251 transitions. [2020-10-28 09:26:06,098 INFO L482 AbstractCegarLoop]: Interpolant automaton has 27 states. [2020-10-28 09:26:06,098 INFO L276 IsEmpty]: Start isEmpty. Operand 231 states and 251 transitions. [2020-10-28 09:26:06,099 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2020-10-28 09:26:06,099 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 09:26:06,099 INFO L422 BasicCegarLoop]: trace histogram [25, 24, 24, 6, 6, 6, 6, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 09:26:06,099 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2020-10-28 09:26:06,099 INFO L429 AbstractCegarLoop]: === Iteration 32 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 09:26:06,100 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 09:26:06,100 INFO L82 PathProgramCache]: Analyzing trace with hash -633870497, now seen corresponding path program 24 times [2020-10-28 09:26:06,100 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 09:26:06,100 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1947774603] [2020-10-28 09:26:06,100 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 09:26:06,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:26:06,135 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:26:06,328 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:26:07,467 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:26:08,701 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:26:10,413 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:26:11,147 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:26:11,148 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 154 [2020-10-28 09:26:11,148 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-28 09:26:11,148 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5026 [2020-10-28 09:26:11,148 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:26:11,148 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:26:11,148 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 26 [2020-10-28 09:26:11,148 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-28 09:26:11,148 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 75 [2020-10-28 09:26:11,148 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:26:11,664 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 09:26:11,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:26:11,666 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:26:11,668 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:26:11,668 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 09:26:11,669 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:26:11,669 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 09:26:11,669 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:26:11,669 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:26:11,669 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:26:11,669 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:26:11,669 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:26:11,670 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:26:11,671 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-10-28 09:26:11,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:26:11,673 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:26:11,674 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:26:11,674 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 09:26:11,674 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:26:11,674 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-28 09:26:11,674 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:26:11,674 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:26:11,674 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:26:11,674 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-28 09:26:11,675 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:26:11,675 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:26:11,676 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2020-10-28 09:26:11,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:26:11,677 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:26:11,677 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:26:11,678 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 09:26:11,678 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:26:11,678 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-28 09:26:11,678 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:26:11,678 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:26:11,678 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:26:11,678 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-28 09:26:11,678 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:26:11,679 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:26:11,679 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2020-10-28 09:26:11,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:26:11,681 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:26:11,681 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:26:11,681 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 09:26:11,681 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:26:11,682 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-28 09:26:11,682 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:26:11,682 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:26:11,682 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:26:11,682 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-28 09:26:11,682 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:26:11,682 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:26:11,683 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2020-10-28 09:26:11,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:26:11,684 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:26:11,687 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:26:11,687 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 09:26:11,687 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:26:11,687 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 09:26:11,687 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:26:11,687 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:26:11,688 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:26:11,688 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-28 09:26:11,688 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:26:11,688 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:26:11,689 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2020-10-28 09:26:11,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:26:11,690 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:26:11,691 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:26:11,691 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 09:26:11,691 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:26:11,691 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-28 09:26:11,691 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:26:11,691 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:26:11,691 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:26:11,692 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-28 09:26:11,692 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:26:11,692 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:26:11,710 INFO L134 CoverageAnalysis]: Checked inductivity of 991 backedges. 10 proven. 876 refuted. 0 times theorem prover too weak. 105 trivial. 0 not checked. [2020-10-28 09:26:11,711 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1947774603] [2020-10-28 09:26:11,711 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 09:26:11,711 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [28] total 28 [2020-10-28 09:26:11,711 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [45203795] [2020-10-28 09:26:11,711 INFO L461 AbstractCegarLoop]: Interpolant automaton has 28 states [2020-10-28 09:26:11,712 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 09:26:11,712 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2020-10-28 09:26:11,712 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=353, Invalid=403, Unknown=0, NotChecked=0, Total=756 [2020-10-28 09:26:11,713 INFO L87 Difference]: Start difference. First operand 231 states and 251 transitions. Second operand 28 states. [2020-10-28 09:26:12,465 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 09:26:12,465 INFO L93 Difference]: Finished difference Result 394 states and 437 transitions. [2020-10-28 09:26:12,465 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-10-28 09:26:12,466 INFO L78 Accepts]: Start accepts. Automaton has 28 states. Word has length 134 [2020-10-28 09:26:12,466 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 09:26:12,468 INFO L225 Difference]: With dead ends: 394 [2020-10-28 09:26:12,468 INFO L226 Difference]: Without dead ends: 243 [2020-10-28 09:26:12,469 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=381, Invalid=431, Unknown=0, NotChecked=0, Total=812 [2020-10-28 09:26:12,469 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 243 states. [2020-10-28 09:26:12,485 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 243 to 239. [2020-10-28 09:26:12,486 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 239 states. [2020-10-28 09:26:12,487 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 239 states to 239 states and 260 transitions. [2020-10-28 09:26:12,487 INFO L78 Accepts]: Start accepts. Automaton has 239 states and 260 transitions. Word has length 134 [2020-10-28 09:26:12,487 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 09:26:12,488 INFO L481 AbstractCegarLoop]: Abstraction has 239 states and 260 transitions. [2020-10-28 09:26:12,488 INFO L482 AbstractCegarLoop]: Interpolant automaton has 28 states. [2020-10-28 09:26:12,488 INFO L276 IsEmpty]: Start isEmpty. Operand 239 states and 260 transitions. [2020-10-28 09:26:12,489 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 138 [2020-10-28 09:26:12,489 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 09:26:12,489 INFO L422 BasicCegarLoop]: trace histogram [26, 25, 25, 6, 6, 6, 6, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 09:26:12,489 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2020-10-28 09:26:12,489 INFO L429 AbstractCegarLoop]: === Iteration 33 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 09:26:12,489 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 09:26:12,490 INFO L82 PathProgramCache]: Analyzing trace with hash -2073065460, now seen corresponding path program 25 times [2020-10-28 09:26:12,490 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 09:26:12,490 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [948357057] [2020-10-28 09:26:12,490 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 09:26:12,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:26:12,529 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:26:12,785 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:26:13,534 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:26:15,696 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:26:16,685 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:26:17,528 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:26:17,528 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 157 [2020-10-28 09:26:17,528 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-28 09:26:17,528 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5015 [2020-10-28 09:26:17,528 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:26:17,529 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:26:17,529 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 27 [2020-10-28 09:26:17,529 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-28 09:26:17,529 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 78 [2020-10-28 09:26:17,529 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:26:18,112 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 09:26:18,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:26:18,115 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:26:18,118 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:26:18,118 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 09:26:18,118 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:26:18,118 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 09:26:18,118 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:26:18,118 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:26:18,118 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:26:18,119 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:26:18,119 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:26:18,119 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:26:18,121 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2020-10-28 09:26:18,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:26:18,122 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:26:18,123 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:26:18,123 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 09:26:18,123 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:26:18,123 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-28 09:26:18,123 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:26:18,123 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:26:18,124 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:26:18,124 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-28 09:26:18,124 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:26:18,124 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:26:18,125 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-10-28 09:26:18,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:26:18,126 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:26:18,126 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:26:18,127 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 09:26:18,127 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:26:18,127 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-28 09:26:18,127 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:26:18,127 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:26:18,127 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:26:18,127 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-28 09:26:18,127 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:26:18,128 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:26:18,130 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2020-10-28 09:26:18,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:26:18,131 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:26:18,132 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:26:18,132 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 09:26:18,132 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:26:18,132 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-28 09:26:18,132 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:26:18,132 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:26:18,132 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:26:18,133 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-28 09:26:18,133 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:26:18,133 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:26:18,133 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2020-10-28 09:26:18,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:26:18,135 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:26:18,135 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:26:18,135 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 09:26:18,135 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:26:18,136 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-28 09:26:18,136 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:26:18,136 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:26:18,136 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:26:18,136 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-28 09:26:18,136 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:26:18,136 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:26:18,137 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2020-10-28 09:26:18,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:26:18,138 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:26:18,139 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:26:18,139 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 09:26:18,139 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:26:18,139 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-28 09:26:18,139 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:26:18,139 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:26:18,139 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:26:18,139 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-28 09:26:18,140 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:26:18,140 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:26:18,159 INFO L134 CoverageAnalysis]: Checked inductivity of 1065 backedges. 10 proven. 950 refuted. 0 times theorem prover too weak. 105 trivial. 0 not checked. [2020-10-28 09:26:18,160 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [948357057] [2020-10-28 09:26:18,160 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 09:26:18,160 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [29] total 29 [2020-10-28 09:26:18,160 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2108422666] [2020-10-28 09:26:18,160 INFO L461 AbstractCegarLoop]: Interpolant automaton has 29 states [2020-10-28 09:26:18,161 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 09:26:18,161 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2020-10-28 09:26:18,162 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=380, Invalid=432, Unknown=0, NotChecked=0, Total=812 [2020-10-28 09:26:18,162 INFO L87 Difference]: Start difference. First operand 239 states and 260 transitions. Second operand 29 states. [2020-10-28 09:26:19,062 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 09:26:19,062 INFO L93 Difference]: Finished difference Result 407 states and 452 transitions. [2020-10-28 09:26:19,063 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2020-10-28 09:26:19,063 INFO L78 Accepts]: Start accepts. Automaton has 29 states. Word has length 137 [2020-10-28 09:26:19,064 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 09:26:19,065 INFO L225 Difference]: With dead ends: 407 [2020-10-28 09:26:19,065 INFO L226 Difference]: Without dead ends: 251 [2020-10-28 09:26:19,066 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=409, Invalid=461, Unknown=0, NotChecked=0, Total=870 [2020-10-28 09:26:19,067 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 251 states. [2020-10-28 09:26:19,082 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 251 to 247. [2020-10-28 09:26:19,083 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 247 states. [2020-10-28 09:26:19,084 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 247 states to 247 states and 269 transitions. [2020-10-28 09:26:19,084 INFO L78 Accepts]: Start accepts. Automaton has 247 states and 269 transitions. Word has length 137 [2020-10-28 09:26:19,084 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 09:26:19,084 INFO L481 AbstractCegarLoop]: Abstraction has 247 states and 269 transitions. [2020-10-28 09:26:19,085 INFO L482 AbstractCegarLoop]: Interpolant automaton has 29 states. [2020-10-28 09:26:19,085 INFO L276 IsEmpty]: Start isEmpty. Operand 247 states and 269 transitions. [2020-10-28 09:26:19,085 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 141 [2020-10-28 09:26:19,085 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 09:26:19,086 INFO L422 BasicCegarLoop]: trace histogram [27, 26, 26, 6, 6, 6, 6, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 09:26:19,086 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2020-10-28 09:26:19,086 INFO L429 AbstractCegarLoop]: === Iteration 34 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 09:26:19,086 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 09:26:19,086 INFO L82 PathProgramCache]: Analyzing trace with hash -471692225, now seen corresponding path program 26 times [2020-10-28 09:26:19,087 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 09:26:19,087 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1728032885] [2020-10-28 09:26:19,087 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 09:26:19,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:26:19,125 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:26:20,357 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:26:23,185 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:26:24,129 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:26:24,130 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 160 [2020-10-28 09:26:24,130 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-28 09:26:24,130 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5020 [2020-10-28 09:26:24,130 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:26:24,130 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:26:24,130 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 37 [2020-10-28 09:26:24,130 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-28 09:26:24,130 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 144 [2020-10-28 09:26:24,130 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:26:27,283 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 09:26:27,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:26:27,287 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:26:27,290 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:26:27,290 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 09:26:27,290 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:26:27,290 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 09:26:27,290 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:26:27,290 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:26:27,291 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:26:27,291 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:26:27,291 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:26:27,291 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:26:27,293 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-10-28 09:26:27,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:26:27,295 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:26:27,297 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:26:27,298 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 09:26:27,298 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:26:27,298 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 09:26:27,298 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:26:27,298 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:26:27,298 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 09:26:27,298 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:26:27,298 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 09:26:27,299 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:26:27,300 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2020-10-28 09:26:27,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:26:27,304 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:26:27,306 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:26:27,306 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 09:26:27,306 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:26:27,306 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 09:26:27,306 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:26:27,306 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:26:27,307 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 09:26:27,307 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:26:27,307 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 09:26:27,307 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:26:27,308 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2020-10-28 09:26:27,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:26:27,310 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:26:27,312 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:26:27,312 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 09:26:27,312 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:26:27,312 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 09:26:27,312 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:26:27,312 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:26:27,313 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 09:26:27,313 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:26:27,313 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 09:26:27,313 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:26:27,314 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2020-10-28 09:26:27,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:26:27,315 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:26:27,317 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:26:27,317 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 09:26:27,317 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:26:27,318 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 09:26:27,318 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:26:27,318 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:26:27,318 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 09:26:27,318 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:26:27,318 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 09:26:27,318 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:26:27,319 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2020-10-28 09:26:27,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:26:27,321 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:26:27,323 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:26:27,323 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 09:26:27,323 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:26:27,323 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 09:26:27,323 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:26:27,324 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:26:27,324 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 09:26:27,324 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:26:27,324 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 09:26:27,324 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:26:27,364 INFO L134 CoverageAnalysis]: Checked inductivity of 1142 backedges. 10 proven. 462 refuted. 0 times theorem prover too weak. 670 trivial. 0 not checked. [2020-10-28 09:26:27,365 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1728032885] [2020-10-28 09:26:27,365 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 09:26:27,365 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19] total 19 [2020-10-28 09:26:27,365 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1417622799] [2020-10-28 09:26:27,366 INFO L461 AbstractCegarLoop]: Interpolant automaton has 19 states [2020-10-28 09:26:27,366 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 09:26:27,366 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2020-10-28 09:26:27,366 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=305, Unknown=0, NotChecked=0, Total=342 [2020-10-28 09:26:27,367 INFO L87 Difference]: Start difference. First operand 247 states and 269 transitions. Second operand 19 states. [2020-10-28 09:26:28,678 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 09:26:28,679 INFO L93 Difference]: Finished difference Result 255 states and 276 transitions. [2020-10-28 09:26:28,679 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2020-10-28 09:26:28,679 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 140 [2020-10-28 09:26:28,680 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 09:26:28,681 INFO L225 Difference]: With dead ends: 255 [2020-10-28 09:26:28,681 INFO L226 Difference]: Without dead ends: 251 [2020-10-28 09:26:28,682 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 68 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 156 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=124, Invalid=1136, Unknown=0, NotChecked=0, Total=1260 [2020-10-28 09:26:28,683 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 251 states. [2020-10-28 09:26:28,700 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 251 to 251. [2020-10-28 09:26:28,700 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 251 states. [2020-10-28 09:26:28,701 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 251 states to 251 states and 272 transitions. [2020-10-28 09:26:28,701 INFO L78 Accepts]: Start accepts. Automaton has 251 states and 272 transitions. Word has length 140 [2020-10-28 09:26:28,702 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 09:26:28,702 INFO L481 AbstractCegarLoop]: Abstraction has 251 states and 272 transitions. [2020-10-28 09:26:28,702 INFO L482 AbstractCegarLoop]: Interpolant automaton has 19 states. [2020-10-28 09:26:28,702 INFO L276 IsEmpty]: Start isEmpty. Operand 251 states and 272 transitions. [2020-10-28 09:26:28,703 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 150 [2020-10-28 09:26:28,703 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 09:26:28,703 INFO L422 BasicCegarLoop]: trace histogram [27, 26, 26, 7, 7, 7, 7, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 09:26:28,704 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2020-10-28 09:26:28,704 INFO L429 AbstractCegarLoop]: === Iteration 35 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 09:26:28,704 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 09:26:28,704 INFO L82 PathProgramCache]: Analyzing trace with hash -657681955, now seen corresponding path program 27 times [2020-10-28 09:26:28,704 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 09:26:28,704 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [74698931] [2020-10-28 09:26:28,704 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 09:26:28,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:26:28,745 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:26:29,618 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:26:30,810 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:26:31,060 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:26:31,582 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:26:33,732 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:26:33,732 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 171 [2020-10-28 09:26:33,732 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-28 09:26:33,732 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5004 [2020-10-28 09:26:33,732 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:26:33,733 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:26:33,733 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 28 [2020-10-28 09:26:33,733 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-28 09:26:33,733 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 81 [2020-10-28 09:26:33,733 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:26:34,321 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 09:26:34,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:26:34,324 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:26:34,329 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:26:34,329 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 09:26:34,329 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:26:34,329 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-28 09:26:34,329 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:26:34,329 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:26:34,330 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:26:34,330 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:26:34,330 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:26:34,330 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:26:34,332 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-10-28 09:26:34,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:26:34,333 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:26:34,334 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:26:34,334 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 09:26:34,334 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:26:34,334 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-28 09:26:34,335 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:26:34,335 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:26:34,335 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:26:34,335 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-28 09:26:34,335 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:26:34,335 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:26:34,336 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2020-10-28 09:26:34,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:26:34,337 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:26:34,338 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:26:34,338 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 09:26:34,338 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:26:34,338 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-28 09:26:34,339 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:26:34,339 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:26:34,339 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:26:34,339 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-28 09:26:34,339 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:26:34,339 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:26:34,340 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2020-10-28 09:26:34,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:26:34,341 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:26:34,342 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:26:34,342 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 09:26:34,342 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:26:34,342 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-28 09:26:34,342 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:26:34,343 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:26:34,343 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:26:34,343 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-28 09:26:34,343 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:26:34,343 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:26:34,344 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2020-10-28 09:26:34,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:26:34,345 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:26:34,346 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:26:34,346 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 09:26:34,346 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:26:34,346 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-28 09:26:34,346 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:26:34,347 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:26:34,347 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:26:34,347 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-28 09:26:34,347 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:26:34,347 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:26:34,348 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2020-10-28 09:26:34,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:26:34,349 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:26:34,350 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:26:34,350 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 09:26:34,350 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:26:34,350 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-28 09:26:34,350 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:26:34,351 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:26:34,351 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:26:34,351 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-28 09:26:34,351 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:26:34,351 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:26:34,352 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2020-10-28 09:26:34,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:26:34,353 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:26:34,354 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:26:34,354 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 09:26:34,354 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:26:34,355 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-28 09:26:34,355 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:26:34,355 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:26:34,355 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:26:34,355 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-28 09:26:34,355 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:26:34,355 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:26:34,378 INFO L134 CoverageAnalysis]: Checked inductivity of 1192 backedges. 12 proven. 1027 refuted. 0 times theorem prover too weak. 153 trivial. 0 not checked. [2020-10-28 09:26:34,378 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [74698931] [2020-10-28 09:26:34,379 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 09:26:34,379 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [30] total 30 [2020-10-28 09:26:34,379 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [167757889] [2020-10-28 09:26:34,379 INFO L461 AbstractCegarLoop]: Interpolant automaton has 30 states [2020-10-28 09:26:34,380 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 09:26:34,380 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2020-10-28 09:26:34,380 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=408, Invalid=462, Unknown=0, NotChecked=0, Total=870 [2020-10-28 09:26:34,381 INFO L87 Difference]: Start difference. First operand 251 states and 272 transitions. Second operand 30 states. [2020-10-28 09:26:35,367 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 09:26:35,367 INFO L93 Difference]: Finished difference Result 428 states and 473 transitions. [2020-10-28 09:26:35,368 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2020-10-28 09:26:35,368 INFO L78 Accepts]: Start accepts. Automaton has 30 states. Word has length 149 [2020-10-28 09:26:35,368 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 09:26:35,370 INFO L225 Difference]: With dead ends: 428 [2020-10-28 09:26:35,370 INFO L226 Difference]: Without dead ends: 263 [2020-10-28 09:26:35,371 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=438, Invalid=492, Unknown=0, NotChecked=0, Total=930 [2020-10-28 09:26:35,372 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 263 states. [2020-10-28 09:26:35,390 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 263 to 259. [2020-10-28 09:26:35,391 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 259 states. [2020-10-28 09:26:35,392 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 259 states to 259 states and 281 transitions. [2020-10-28 09:26:35,392 INFO L78 Accepts]: Start accepts. Automaton has 259 states and 281 transitions. Word has length 149 [2020-10-28 09:26:35,393 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 09:26:35,393 INFO L481 AbstractCegarLoop]: Abstraction has 259 states and 281 transitions. [2020-10-28 09:26:35,393 INFO L482 AbstractCegarLoop]: Interpolant automaton has 30 states. [2020-10-28 09:26:35,393 INFO L276 IsEmpty]: Start isEmpty. Operand 259 states and 281 transitions. [2020-10-28 09:26:35,394 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2020-10-28 09:26:35,394 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 09:26:35,394 INFO L422 BasicCegarLoop]: trace histogram [28, 27, 27, 7, 7, 7, 7, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 09:26:35,394 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2020-10-28 09:26:35,394 INFO L429 AbstractCegarLoop]: === Iteration 36 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 09:26:35,395 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 09:26:35,395 INFO L82 PathProgramCache]: Analyzing trace with hash 871621008, now seen corresponding path program 28 times [2020-10-28 09:26:35,395 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 09:26:35,395 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [945127540] [2020-10-28 09:26:35,395 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 09:26:35,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:26:35,438 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:26:36,630 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:26:37,475 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:26:38,992 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:26:39,913 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:26:40,578 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:26:40,578 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 174 [2020-10-28 09:26:40,578 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-28 09:26:40,579 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5158 [2020-10-28 09:26:40,579 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:26:40,579 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:26:40,579 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 29 [2020-10-28 09:26:40,579 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-28 09:26:40,579 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 84 [2020-10-28 09:26:40,579 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:26:41,218 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 09:26:41,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:26:41,223 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:26:41,224 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:26:41,224 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 09:26:41,225 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:26:41,225 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 09:26:41,225 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:26:41,225 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:26:41,225 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:26:41,225 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:26:41,225 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:26:41,225 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:26:41,226 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2020-10-28 09:26:41,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:26:41,227 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:26:41,228 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:26:41,228 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 09:26:41,228 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:26:41,228 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-28 09:26:41,229 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:26:41,229 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:26:41,229 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:26:41,229 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-28 09:26:41,229 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:26:41,229 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:26:41,230 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2020-10-28 09:26:41,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:26:41,231 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:26:41,232 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:26:41,232 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 09:26:41,232 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:26:41,232 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-28 09:26:41,232 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:26:41,232 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:26:41,232 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:26:41,232 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-28 09:26:41,233 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:26:41,233 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:26:41,233 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2020-10-28 09:26:41,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:26:41,234 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:26:41,235 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:26:41,235 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 09:26:41,235 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:26:41,235 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-28 09:26:41,236 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:26:41,236 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:26:41,236 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:26:41,236 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-28 09:26:41,236 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:26:41,236 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:26:41,237 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2020-10-28 09:26:41,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:26:41,238 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:26:41,239 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:26:41,239 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 09:26:41,239 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:26:41,239 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-28 09:26:41,239 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:26:41,239 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:26:41,240 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:26:41,240 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-28 09:26:41,240 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:26:41,240 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:26:41,241 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 128 [2020-10-28 09:26:41,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:26:41,242 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:26:41,243 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:26:41,243 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 09:26:41,243 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:26:41,243 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-28 09:26:41,243 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:26:41,243 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:26:41,243 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:26:41,243 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-28 09:26:41,244 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:26:41,244 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:26:41,244 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 137 [2020-10-28 09:26:41,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:26:41,246 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:26:41,246 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:26:41,246 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 09:26:41,246 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:26:41,247 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-28 09:26:41,247 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:26:41,247 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:26:41,247 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:26:41,247 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-28 09:26:41,247 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:26:41,247 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:26:41,267 INFO L134 CoverageAnalysis]: Checked inductivity of 1272 backedges. 12 proven. 1107 refuted. 0 times theorem prover too weak. 153 trivial. 0 not checked. [2020-10-28 09:26:41,267 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [945127540] [2020-10-28 09:26:41,267 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 09:26:41,267 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [31] total 31 [2020-10-28 09:26:41,267 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [920435064] [2020-10-28 09:26:41,268 INFO L461 AbstractCegarLoop]: Interpolant automaton has 31 states [2020-10-28 09:26:41,268 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 09:26:41,268 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2020-10-28 09:26:41,269 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=437, Invalid=493, Unknown=0, NotChecked=0, Total=930 [2020-10-28 09:26:41,269 INFO L87 Difference]: Start difference. First operand 259 states and 281 transitions. Second operand 31 states. [2020-10-28 09:26:42,118 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 09:26:42,118 INFO L93 Difference]: Finished difference Result 441 states and 488 transitions. [2020-10-28 09:26:42,119 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2020-10-28 09:26:42,119 INFO L78 Accepts]: Start accepts. Automaton has 31 states. Word has length 152 [2020-10-28 09:26:42,119 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 09:26:42,121 INFO L225 Difference]: With dead ends: 441 [2020-10-28 09:26:42,121 INFO L226 Difference]: Without dead ends: 271 [2020-10-28 09:26:42,123 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=468, Invalid=524, Unknown=0, NotChecked=0, Total=992 [2020-10-28 09:26:42,123 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 271 states. [2020-10-28 09:26:42,140 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 271 to 267. [2020-10-28 09:26:42,140 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 267 states. [2020-10-28 09:26:42,142 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 267 states to 267 states and 290 transitions. [2020-10-28 09:26:42,142 INFO L78 Accepts]: Start accepts. Automaton has 267 states and 290 transitions. Word has length 152 [2020-10-28 09:26:42,142 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 09:26:42,142 INFO L481 AbstractCegarLoop]: Abstraction has 267 states and 290 transitions. [2020-10-28 09:26:42,142 INFO L482 AbstractCegarLoop]: Interpolant automaton has 31 states. [2020-10-28 09:26:42,142 INFO L276 IsEmpty]: Start isEmpty. Operand 267 states and 290 transitions. [2020-10-28 09:26:42,143 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 156 [2020-10-28 09:26:42,143 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 09:26:42,143 INFO L422 BasicCegarLoop]: trace histogram [29, 28, 28, 7, 7, 7, 7, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 09:26:42,143 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2020-10-28 09:26:42,144 INFO L429 AbstractCegarLoop]: === Iteration 37 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 09:26:42,144 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 09:26:42,144 INFO L82 PathProgramCache]: Analyzing trace with hash -676884227, now seen corresponding path program 29 times [2020-10-28 09:26:42,144 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 09:26:42,144 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [409955187] [2020-10-28 09:26:42,144 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 09:26:42,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:26:42,187 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:26:43,182 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:26:43,679 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:26:44,106 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:26:44,742 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:26:47,175 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:26:47,175 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 177 [2020-10-28 09:26:47,175 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-28 09:26:47,175 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5005 [2020-10-28 09:26:47,175 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:26:47,175 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:26:47,175 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 30 [2020-10-28 09:26:47,176 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-28 09:26:47,176 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 87 [2020-10-28 09:26:47,176 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:26:47,852 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 09:26:47,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:26:47,857 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:26:47,858 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:26:47,858 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 09:26:47,858 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:26:47,859 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 09:26:47,859 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:26:47,859 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:26:47,859 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:26:47,859 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:26:47,859 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:26:47,859 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:26:47,860 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-10-28 09:26:47,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:26:47,861 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:26:47,862 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:26:47,862 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 09:26:47,862 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:26:47,862 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-28 09:26:47,862 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:26:47,862 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:26:47,862 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:26:47,862 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-28 09:26:47,863 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:26:47,863 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:26:47,863 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2020-10-28 09:26:47,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:26:47,864 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:26:47,864 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:26:47,864 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 09:26:47,865 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:26:47,865 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-28 09:26:47,865 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:26:47,865 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:26:47,865 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:26:47,865 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-28 09:26:47,865 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:26:47,865 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:26:47,866 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2020-10-28 09:26:47,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:26:47,866 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:26:47,867 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:26:47,867 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 09:26:47,867 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:26:47,867 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-28 09:26:47,867 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:26:47,867 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:26:47,867 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:26:47,867 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-28 09:26:47,867 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:26:47,867 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:26:47,868 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2020-10-28 09:26:47,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:26:47,869 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:26:47,869 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:26:47,869 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 09:26:47,869 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:26:47,869 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-28 09:26:47,869 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:26:47,870 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:26:47,870 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:26:47,870 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-28 09:26:47,870 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:26:47,870 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:26:47,870 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2020-10-28 09:26:47,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:26:47,871 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:26:47,871 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:26:47,872 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 09:26:47,872 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:26:47,872 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-28 09:26:47,872 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:26:47,872 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:26:47,872 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:26:47,872 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-28 09:26:47,872 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:26:47,872 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:26:47,873 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 140 [2020-10-28 09:26:47,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:26:47,874 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:26:47,874 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:26:47,874 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 09:26:47,874 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:26:47,874 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-28 09:26:47,875 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:26:47,875 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:26:47,875 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:26:47,875 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-28 09:26:47,875 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:26:47,875 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:26:47,892 INFO L134 CoverageAnalysis]: Checked inductivity of 1355 backedges. 12 proven. 1190 refuted. 0 times theorem prover too weak. 153 trivial. 0 not checked. [2020-10-28 09:26:47,892 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [409955187] [2020-10-28 09:26:47,892 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 09:26:47,892 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [32] total 32 [2020-10-28 09:26:47,892 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [825116658] [2020-10-28 09:26:47,893 INFO L461 AbstractCegarLoop]: Interpolant automaton has 32 states [2020-10-28 09:26:47,893 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 09:26:47,893 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2020-10-28 09:26:47,894 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=467, Invalid=525, Unknown=0, NotChecked=0, Total=992 [2020-10-28 09:26:47,894 INFO L87 Difference]: Start difference. First operand 267 states and 290 transitions. Second operand 32 states. [2020-10-28 09:26:48,900 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 09:26:48,900 INFO L93 Difference]: Finished difference Result 454 states and 503 transitions. [2020-10-28 09:26:48,901 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2020-10-28 09:26:48,901 INFO L78 Accepts]: Start accepts. Automaton has 32 states. Word has length 155 [2020-10-28 09:26:48,901 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 09:26:48,903 INFO L225 Difference]: With dead ends: 454 [2020-10-28 09:26:48,903 INFO L226 Difference]: Without dead ends: 279 [2020-10-28 09:26:48,904 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=499, Invalid=557, Unknown=0, NotChecked=0, Total=1056 [2020-10-28 09:26:48,905 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 279 states. [2020-10-28 09:26:48,920 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 279 to 275. [2020-10-28 09:26:48,920 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 275 states. [2020-10-28 09:26:48,921 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 275 states to 275 states and 299 transitions. [2020-10-28 09:26:48,921 INFO L78 Accepts]: Start accepts. Automaton has 275 states and 299 transitions. Word has length 155 [2020-10-28 09:26:48,921 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 09:26:48,922 INFO L481 AbstractCegarLoop]: Abstraction has 275 states and 299 transitions. [2020-10-28 09:26:48,922 INFO L482 AbstractCegarLoop]: Interpolant automaton has 32 states. [2020-10-28 09:26:48,922 INFO L276 IsEmpty]: Start isEmpty. Operand 275 states and 299 transitions. [2020-10-28 09:26:48,923 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 159 [2020-10-28 09:26:48,923 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 09:26:48,923 INFO L422 BasicCegarLoop]: trace histogram [30, 29, 29, 7, 7, 7, 7, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 09:26:48,923 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2020-10-28 09:26:48,923 INFO L429 AbstractCegarLoop]: === Iteration 38 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 09:26:48,923 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 09:26:48,923 INFO L82 PathProgramCache]: Analyzing trace with hash 47386224, now seen corresponding path program 30 times [2020-10-28 09:26:48,924 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 09:26:48,924 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [826718221] [2020-10-28 09:26:48,924 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 09:26:48,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:26:48,964 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:26:49,624 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:26:50,514 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:26:51,531 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:26:52,529 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:26:53,950 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:26:53,951 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 180 [2020-10-28 09:26:53,951 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-28 09:26:53,951 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5003 [2020-10-28 09:26:53,951 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:26:53,951 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:26:53,951 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 31 [2020-10-28 09:26:53,951 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-28 09:26:53,951 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 90 [2020-10-28 09:26:53,951 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:26:54,666 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 09:26:54,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:26:54,671 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:26:54,673 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:26:54,673 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 09:26:54,673 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:26:54,673 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 09:26:54,673 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:26:54,673 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:26:54,673 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:26:54,673 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:26:54,673 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:26:54,673 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:26:54,675 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2020-10-28 09:26:54,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:26:54,675 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:26:54,676 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:26:54,676 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 09:26:54,676 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:26:54,676 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-28 09:26:54,676 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:26:54,677 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:26:54,677 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:26:54,677 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-28 09:26:54,677 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:26:54,677 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:26:54,677 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2020-10-28 09:26:54,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:26:54,678 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:26:54,679 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:26:54,679 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 09:26:54,679 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:26:54,679 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-28 09:26:54,679 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:26:54,679 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:26:54,679 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:26:54,679 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-28 09:26:54,679 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:26:54,679 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:26:54,680 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2020-10-28 09:26:54,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:26:54,681 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:26:54,681 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:26:54,682 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 09:26:54,682 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:26:54,682 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-28 09:26:54,682 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:26:54,682 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:26:54,682 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:26:54,682 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-28 09:26:54,682 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:26:54,682 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:26:54,683 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2020-10-28 09:26:54,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:26:54,683 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:26:54,684 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:26:54,684 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 09:26:54,684 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:26:54,684 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-28 09:26:54,684 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:26:54,684 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:26:54,684 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:26:54,684 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-28 09:26:54,684 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:26:54,685 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:26:54,685 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2020-10-28 09:26:54,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:26:54,686 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:26:54,687 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:26:54,687 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 09:26:54,687 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:26:54,687 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-28 09:26:54,687 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:26:54,687 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:26:54,687 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:26:54,687 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-28 09:26:54,687 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:26:54,688 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:26:54,688 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2020-10-28 09:26:54,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:26:54,689 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:26:54,690 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:26:54,690 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 09:26:54,690 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:26:54,690 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-28 09:26:54,691 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:26:54,691 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:26:54,691 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:26:54,691 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-28 09:26:54,691 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:26:54,691 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:26:54,709 INFO L134 CoverageAnalysis]: Checked inductivity of 1441 backedges. 12 proven. 1276 refuted. 0 times theorem prover too weak. 153 trivial. 0 not checked. [2020-10-28 09:26:54,709 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [826718221] [2020-10-28 09:26:54,709 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 09:26:54,709 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [33] total 33 [2020-10-28 09:26:54,710 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [917786761] [2020-10-28 09:26:54,710 INFO L461 AbstractCegarLoop]: Interpolant automaton has 33 states [2020-10-28 09:26:54,710 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 09:26:54,711 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2020-10-28 09:26:54,711 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=498, Invalid=558, Unknown=0, NotChecked=0, Total=1056 [2020-10-28 09:26:54,711 INFO L87 Difference]: Start difference. First operand 275 states and 299 transitions. Second operand 33 states. [2020-10-28 09:26:55,822 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 09:26:55,822 INFO L93 Difference]: Finished difference Result 467 states and 518 transitions. [2020-10-28 09:26:55,823 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2020-10-28 09:26:55,823 INFO L78 Accepts]: Start accepts. Automaton has 33 states. Word has length 158 [2020-10-28 09:26:55,823 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 09:26:55,825 INFO L225 Difference]: With dead ends: 467 [2020-10-28 09:26:55,825 INFO L226 Difference]: Without dead ends: 287 [2020-10-28 09:26:55,826 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 29 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=531, Invalid=591, Unknown=0, NotChecked=0, Total=1122 [2020-10-28 09:26:55,827 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 287 states. [2020-10-28 09:26:55,844 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 287 to 283. [2020-10-28 09:26:55,845 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 283 states. [2020-10-28 09:26:55,846 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 283 states to 283 states and 308 transitions. [2020-10-28 09:26:55,846 INFO L78 Accepts]: Start accepts. Automaton has 283 states and 308 transitions. Word has length 158 [2020-10-28 09:26:55,846 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 09:26:55,846 INFO L481 AbstractCegarLoop]: Abstraction has 283 states and 308 transitions. [2020-10-28 09:26:55,847 INFO L482 AbstractCegarLoop]: Interpolant automaton has 33 states. [2020-10-28 09:26:55,847 INFO L276 IsEmpty]: Start isEmpty. Operand 283 states and 308 transitions. [2020-10-28 09:26:55,847 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 162 [2020-10-28 09:26:55,848 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 09:26:55,848 INFO L422 BasicCegarLoop]: trace histogram [31, 30, 30, 7, 7, 7, 7, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 09:26:55,848 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2020-10-28 09:26:55,848 INFO L429 AbstractCegarLoop]: === Iteration 39 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 09:26:55,848 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 09:26:55,848 INFO L82 PathProgramCache]: Analyzing trace with hash -1127303139, now seen corresponding path program 31 times [2020-10-28 09:26:55,849 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 09:26:55,849 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [879166066] [2020-10-28 09:26:55,849 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 09:26:55,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:26:55,884 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:26:55,938 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:26:57,057 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:26:57,937 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:27:00,902 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:27:00,903 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 183 [2020-10-28 09:27:00,903 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-28 09:27:00,903 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5031 [2020-10-28 09:27:00,903 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:27:00,903 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:27:00,903 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 32 [2020-10-28 09:27:00,903 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-28 09:27:00,903 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 93 [2020-10-28 09:27:00,903 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:27:01,668 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 09:27:01,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:27:01,672 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:27:01,674 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:27:01,674 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 09:27:01,674 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:27:01,674 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 09:27:01,674 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:27:01,674 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:27:01,675 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:27:01,675 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:27:01,675 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:27:01,675 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:27:01,676 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2020-10-28 09:27:01,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:27:01,677 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:27:01,678 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:27:01,678 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 09:27:01,678 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:27:01,678 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-28 09:27:01,678 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:27:01,678 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:27:01,678 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:27:01,678 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-28 09:27:01,678 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:27:01,678 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:27:01,679 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2020-10-28 09:27:01,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:27:01,679 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:27:01,680 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:27:01,680 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 09:27:01,680 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:27:01,680 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-28 09:27:01,680 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:27:01,680 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:27:01,680 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:27:01,680 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-28 09:27:01,680 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:27:01,681 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:27:01,681 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2020-10-28 09:27:01,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:27:01,682 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:27:01,682 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:27:01,682 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 09:27:01,682 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:27:01,682 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-28 09:27:01,682 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:27:01,682 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:27:01,682 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:27:01,683 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-28 09:27:01,683 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:27:01,683 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:27:01,683 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 128 [2020-10-28 09:27:01,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:27:01,684 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:27:01,684 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:27:01,684 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 09:27:01,684 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:27:01,684 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-28 09:27:01,684 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:27:01,685 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:27:01,685 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:27:01,685 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-28 09:27:01,685 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:27:01,685 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:27:01,685 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 137 [2020-10-28 09:27:01,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:27:01,686 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:27:01,686 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:27:01,686 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 09:27:01,686 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:27:01,687 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-28 09:27:01,687 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:27:01,687 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:27:01,687 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:27:01,687 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-28 09:27:01,687 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:27:01,687 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:27:01,687 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 146 [2020-10-28 09:27:01,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:27:01,688 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:27:01,689 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:27:01,689 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 09:27:01,689 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:27:01,689 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-28 09:27:01,689 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:27:01,689 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:27:01,689 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:27:01,689 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-28 09:27:01,689 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:27:01,689 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:27:01,706 INFO L134 CoverageAnalysis]: Checked inductivity of 1530 backedges. 12 proven. 1365 refuted. 0 times theorem prover too weak. 153 trivial. 0 not checked. [2020-10-28 09:27:01,706 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [879166066] [2020-10-28 09:27:01,706 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 09:27:01,706 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [34] total 34 [2020-10-28 09:27:01,707 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [403376602] [2020-10-28 09:27:01,707 INFO L461 AbstractCegarLoop]: Interpolant automaton has 34 states [2020-10-28 09:27:01,707 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 09:27:01,707 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2020-10-28 09:27:01,708 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=530, Invalid=592, Unknown=0, NotChecked=0, Total=1122 [2020-10-28 09:27:01,708 INFO L87 Difference]: Start difference. First operand 283 states and 308 transitions. Second operand 34 states. [2020-10-28 09:27:02,759 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 09:27:02,759 INFO L93 Difference]: Finished difference Result 480 states and 533 transitions. [2020-10-28 09:27:02,760 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2020-10-28 09:27:02,760 INFO L78 Accepts]: Start accepts. Automaton has 34 states. Word has length 161 [2020-10-28 09:27:02,760 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 09:27:02,762 INFO L225 Difference]: With dead ends: 480 [2020-10-28 09:27:02,763 INFO L226 Difference]: Without dead ends: 295 [2020-10-28 09:27:02,764 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=564, Invalid=626, Unknown=0, NotChecked=0, Total=1190 [2020-10-28 09:27:02,764 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 295 states. [2020-10-28 09:27:02,782 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 295 to 291. [2020-10-28 09:27:02,782 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 291 states. [2020-10-28 09:27:02,784 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 291 states to 291 states and 317 transitions. [2020-10-28 09:27:02,784 INFO L78 Accepts]: Start accepts. Automaton has 291 states and 317 transitions. Word has length 161 [2020-10-28 09:27:02,784 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 09:27:02,784 INFO L481 AbstractCegarLoop]: Abstraction has 291 states and 317 transitions. [2020-10-28 09:27:02,784 INFO L482 AbstractCegarLoop]: Interpolant automaton has 34 states. [2020-10-28 09:27:02,784 INFO L276 IsEmpty]: Start isEmpty. Operand 291 states and 317 transitions. [2020-10-28 09:27:02,785 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 165 [2020-10-28 09:27:02,785 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 09:27:02,785 INFO L422 BasicCegarLoop]: trace histogram [32, 31, 31, 7, 7, 7, 7, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 09:27:02,786 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2020-10-28 09:27:02,786 INFO L429 AbstractCegarLoop]: === Iteration 40 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 09:27:02,786 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 09:27:02,786 INFO L82 PathProgramCache]: Analyzing trace with hash -904588464, now seen corresponding path program 32 times [2020-10-28 09:27:02,786 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 09:27:02,786 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1124403561] [2020-10-28 09:27:02,786 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 09:27:02,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:27:02,828 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:27:03,050 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:27:04,978 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:27:05,862 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:27:06,887 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:27:07,668 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:27:07,881 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:27:07,881 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 186 [2020-10-28 09:27:07,882 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-28 09:27:07,882 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5071 [2020-10-28 09:27:07,882 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:27:07,882 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:27:07,882 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 33 [2020-10-28 09:27:07,882 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-28 09:27:07,882 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 96 [2020-10-28 09:27:07,882 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:27:08,690 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 09:27:08,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:27:08,692 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:27:08,694 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:27:08,694 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 09:27:08,694 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:27:08,695 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 09:27:08,695 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:27:08,695 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:27:08,695 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:27:08,695 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:27:08,695 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:27:08,695 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:27:08,696 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2020-10-28 09:27:08,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:27:08,697 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:27:08,697 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:27:08,698 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 09:27:08,698 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:27:08,698 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-28 09:27:08,698 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:27:08,698 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:27:08,698 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:27:08,698 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-28 09:27:08,698 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:27:08,698 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:27:08,699 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2020-10-28 09:27:08,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:27:08,699 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:27:08,700 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:27:08,700 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 09:27:08,700 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:27:08,700 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-28 09:27:08,700 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:27:08,700 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:27:08,700 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:27:08,700 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-28 09:27:08,701 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:27:08,701 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:27:08,701 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2020-10-28 09:27:08,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:27:08,702 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:27:08,702 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:27:08,702 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 09:27:08,702 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:27:08,703 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-28 09:27:08,703 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:27:08,703 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:27:08,703 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:27:08,703 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-28 09:27:08,703 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:27:08,703 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:27:08,704 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2020-10-28 09:27:08,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:27:08,704 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:27:08,705 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:27:08,705 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 09:27:08,705 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:27:08,705 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-28 09:27:08,705 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:27:08,705 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:27:08,706 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:27:08,706 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-28 09:27:08,706 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:27:08,706 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:27:08,706 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 140 [2020-10-28 09:27:08,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:27:08,707 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:27:08,708 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:27:08,708 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 09:27:08,708 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:27:08,708 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-28 09:27:08,708 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:27:08,708 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:27:08,708 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:27:08,708 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-28 09:27:08,709 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:27:08,709 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:27:08,709 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 149 [2020-10-28 09:27:08,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:27:08,710 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:27:08,711 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:27:08,711 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 09:27:08,711 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:27:08,711 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-28 09:27:08,711 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:27:08,711 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:27:08,711 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:27:08,712 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-28 09:27:08,712 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:27:08,712 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:27:08,730 INFO L134 CoverageAnalysis]: Checked inductivity of 1622 backedges. 12 proven. 1457 refuted. 0 times theorem prover too weak. 153 trivial. 0 not checked. [2020-10-28 09:27:08,730 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1124403561] [2020-10-28 09:27:08,730 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 09:27:08,730 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [35] total 35 [2020-10-28 09:27:08,730 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1985071419] [2020-10-28 09:27:08,731 INFO L461 AbstractCegarLoop]: Interpolant automaton has 35 states [2020-10-28 09:27:08,731 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 09:27:08,731 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2020-10-28 09:27:08,731 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=563, Invalid=627, Unknown=0, NotChecked=0, Total=1190 [2020-10-28 09:27:08,732 INFO L87 Difference]: Start difference. First operand 291 states and 317 transitions. Second operand 35 states. [2020-10-28 09:27:09,956 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 09:27:09,956 INFO L93 Difference]: Finished difference Result 493 states and 548 transitions. [2020-10-28 09:27:09,957 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2020-10-28 09:27:09,957 INFO L78 Accepts]: Start accepts. Automaton has 35 states. Word has length 164 [2020-10-28 09:27:09,957 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 09:27:09,960 INFO L225 Difference]: With dead ends: 493 [2020-10-28 09:27:09,960 INFO L226 Difference]: Without dead ends: 303 [2020-10-28 09:27:09,961 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=598, Invalid=662, Unknown=0, NotChecked=0, Total=1260 [2020-10-28 09:27:09,962 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 303 states. [2020-10-28 09:27:09,981 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 303 to 299. [2020-10-28 09:27:09,982 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 299 states. [2020-10-28 09:27:09,983 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 299 states to 299 states and 326 transitions. [2020-10-28 09:27:09,983 INFO L78 Accepts]: Start accepts. Automaton has 299 states and 326 transitions. Word has length 164 [2020-10-28 09:27:09,984 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 09:27:09,984 INFO L481 AbstractCegarLoop]: Abstraction has 299 states and 326 transitions. [2020-10-28 09:27:09,984 INFO L482 AbstractCegarLoop]: Interpolant automaton has 35 states. [2020-10-28 09:27:09,984 INFO L276 IsEmpty]: Start isEmpty. Operand 299 states and 326 transitions. [2020-10-28 09:27:09,985 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 168 [2020-10-28 09:27:09,985 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 09:27:09,985 INFO L422 BasicCegarLoop]: trace histogram [33, 32, 32, 7, 7, 7, 7, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 09:27:09,985 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39 [2020-10-28 09:27:09,985 INFO L429 AbstractCegarLoop]: === Iteration 41 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 09:27:09,986 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 09:27:09,986 INFO L82 PathProgramCache]: Analyzing trace with hash -1736177859, now seen corresponding path program 33 times [2020-10-28 09:27:09,986 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 09:27:09,986 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1416184302] [2020-10-28 09:27:09,986 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 09:27:10,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:27:10,028 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:27:10,863 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:27:11,904 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:27:15,020 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:27:15,020 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 189 [2020-10-28 09:27:15,020 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-28 09:27:15,020 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5010 [2020-10-28 09:27:15,020 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:27:15,020 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:27:15,020 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 34 [2020-10-28 09:27:15,020 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-28 09:27:15,021 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 99 [2020-10-28 09:27:15,021 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:27:15,874 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 09:27:15,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:27:15,876 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:27:15,879 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:27:15,879 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 09:27:15,879 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:27:15,879 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 09:27:15,880 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:27:15,880 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:27:15,880 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:27:15,880 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:27:15,880 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:27:15,880 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:27:15,881 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2020-10-28 09:27:15,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:27:15,882 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:27:15,882 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:27:15,883 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 09:27:15,883 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:27:15,883 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-28 09:27:15,883 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:27:15,883 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:27:15,883 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:27:15,883 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-28 09:27:15,883 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:27:15,883 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:27:15,884 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2020-10-28 09:27:15,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:27:15,885 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:27:15,886 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:27:15,886 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 09:27:15,886 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:27:15,886 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-28 09:27:15,886 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:27:15,886 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:27:15,886 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:27:15,886 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-28 09:27:15,887 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:27:15,887 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:27:15,887 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2020-10-28 09:27:15,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:27:15,888 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:27:15,889 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:27:15,889 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 09:27:15,889 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:27:15,889 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-28 09:27:15,889 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:27:15,889 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:27:15,889 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:27:15,890 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-28 09:27:15,890 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:27:15,890 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:27:15,890 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2020-10-28 09:27:15,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:27:15,891 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:27:15,892 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:27:15,892 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 09:27:15,892 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:27:15,892 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-28 09:27:15,892 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:27:15,893 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:27:15,893 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:27:15,893 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-28 09:27:15,893 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:27:15,893 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:27:15,894 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2020-10-28 09:27:15,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:27:15,895 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:27:15,895 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:27:15,896 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 09:27:15,896 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:27:15,896 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-28 09:27:15,896 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:27:15,896 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:27:15,896 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:27:15,896 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-28 09:27:15,896 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:27:15,896 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:27:15,897 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 152 [2020-10-28 09:27:15,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:27:15,898 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:27:15,898 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:27:15,898 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 09:27:15,899 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:27:15,899 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-28 09:27:15,899 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:27:15,899 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:27:15,899 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:27:15,899 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-28 09:27:15,899 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:27:15,899 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:27:15,919 INFO L134 CoverageAnalysis]: Checked inductivity of 1717 backedges. 12 proven. 1552 refuted. 0 times theorem prover too weak. 153 trivial. 0 not checked. [2020-10-28 09:27:15,919 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1416184302] [2020-10-28 09:27:15,920 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 09:27:15,920 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [36] total 36 [2020-10-28 09:27:15,920 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1692368666] [2020-10-28 09:27:15,920 INFO L461 AbstractCegarLoop]: Interpolant automaton has 36 states [2020-10-28 09:27:15,920 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 09:27:15,921 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2020-10-28 09:27:15,921 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=597, Invalid=663, Unknown=0, NotChecked=0, Total=1260 [2020-10-28 09:27:15,921 INFO L87 Difference]: Start difference. First operand 299 states and 326 transitions. Second operand 36 states. [2020-10-28 09:27:17,209 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 09:27:17,209 INFO L93 Difference]: Finished difference Result 506 states and 563 transitions. [2020-10-28 09:27:17,210 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2020-10-28 09:27:17,210 INFO L78 Accepts]: Start accepts. Automaton has 36 states. Word has length 167 [2020-10-28 09:27:17,210 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 09:27:17,212 INFO L225 Difference]: With dead ends: 506 [2020-10-28 09:27:17,212 INFO L226 Difference]: Without dead ends: 311 [2020-10-28 09:27:17,213 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=633, Invalid=699, Unknown=0, NotChecked=0, Total=1332 [2020-10-28 09:27:17,213 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 311 states. [2020-10-28 09:27:17,235 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 311 to 307. [2020-10-28 09:27:17,235 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 307 states. [2020-10-28 09:27:17,236 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 307 states to 307 states and 335 transitions. [2020-10-28 09:27:17,237 INFO L78 Accepts]: Start accepts. Automaton has 307 states and 335 transitions. Word has length 167 [2020-10-28 09:27:17,237 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 09:27:17,237 INFO L481 AbstractCegarLoop]: Abstraction has 307 states and 335 transitions. [2020-10-28 09:27:17,237 INFO L482 AbstractCegarLoop]: Interpolant automaton has 36 states. [2020-10-28 09:27:17,237 INFO L276 IsEmpty]: Start isEmpty. Operand 307 states and 335 transitions. [2020-10-28 09:27:17,238 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 171 [2020-10-28 09:27:17,238 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 09:27:17,239 INFO L422 BasicCegarLoop]: trace histogram [34, 33, 33, 7, 7, 7, 7, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 09:27:17,239 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40 [2020-10-28 09:27:17,239 INFO L429 AbstractCegarLoop]: === Iteration 42 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 09:27:17,239 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 09:27:17,239 INFO L82 PathProgramCache]: Analyzing trace with hash 2050486320, now seen corresponding path program 34 times [2020-10-28 09:27:17,239 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 09:27:17,240 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1016065103] [2020-10-28 09:27:17,240 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 09:27:17,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:27:17,286 FATAL L256 erpolLogProxyWrapper]: Now shrinking...