/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-industry-pattern/array_of_struct_break.i -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-28 09:19:51,307 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-28 09:19:51,312 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-28 09:19:51,371 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-28 09:19:51,372 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-28 09:19:51,379 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-28 09:19:51,383 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-28 09:19:51,388 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-28 09:19:51,391 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-28 09:19:51,397 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-28 09:19:51,399 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-28 09:19:51,400 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-28 09:19:51,401 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-28 09:19:51,404 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-28 09:19:51,408 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-28 09:19:51,411 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-28 09:19:51,413 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-28 09:19:51,417 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-28 09:19:51,424 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-28 09:19:51,434 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-28 09:19:51,436 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-28 09:19:51,438 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-28 09:19:51,440 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-28 09:19:51,443 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-28 09:19:51,467 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-28 09:19:51,468 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-28 09:19:51,468 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-28 09:19:51,471 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-28 09:19:51,471 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-28 09:19:51,473 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-28 09:19:51,473 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-28 09:19:51,474 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-28 09:19:51,477 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-28 09:19:51,478 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-28 09:19:51,479 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-28 09:19:51,479 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-28 09:19:51,480 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-28 09:19:51,480 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-28 09:19:51,481 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-28 09:19:51,482 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-28 09:19:51,482 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-28 09:19:51,491 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 09:19:51,540 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-28 09:19:51,541 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-28 09:19:51,545 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-28 09:19:51,545 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-28 09:19:51,546 INFO L138 SettingsManager]: * Use SBE=true [2020-10-28 09:19:51,546 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-28 09:19:51,546 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-28 09:19:51,546 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-28 09:19:51,547 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-28 09:19:51,547 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-28 09:19:51,548 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-28 09:19:51,548 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-28 09:19:51,549 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-28 09:19:51,549 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-28 09:19:51,549 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-28 09:19:51,550 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-28 09:19:51,550 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-28 09:19:51,550 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-28 09:19:51,550 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-28 09:19:51,551 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-28 09:19:51,551 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-28 09:19:51,551 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-28 09:19:51,551 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-28 09:19:51,552 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-28 09:19:51,552 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-28 09:19:51,552 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-28 09:19:51,552 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-28 09:19:51,553 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-28 09:19:51,553 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-28 09:19:51,553 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.6;log-additional-information=true;unknown-allowed=true; [2020-10-28 09:19:52,030 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-28 09:19:52,065 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-28 09:19:52,069 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-28 09:19:52,070 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-28 09:19:52,071 INFO L275 PluginConnector]: CDTParser initialized [2020-10-28 09:19:52,072 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/array-industry-pattern/array_of_struct_break.i [2020-10-28 09:19:52,143 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/d5c8bd3a0/b1dc826f18034f96aa1f2caba514d3f2/FLAG8822e18c1 [2020-10-28 09:19:52,764 INFO L306 CDTParser]: Found 1 translation units. [2020-10-28 09:19:52,764 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/array-industry-pattern/array_of_struct_break.i [2020-10-28 09:19:52,773 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/d5c8bd3a0/b1dc826f18034f96aa1f2caba514d3f2/FLAG8822e18c1 [2020-10-28 09:19:53,149 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/d5c8bd3a0/b1dc826f18034f96aa1f2caba514d3f2 [2020-10-28 09:19:53,152 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-28 09:19:53,161 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-28 09:19:53,166 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-28 09:19:53,166 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-28 09:19:53,171 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-28 09:19:53,172 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 09:19:53" (1/1) ... [2020-10-28 09:19:53,177 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2c7ee743 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:19:53, skipping insertion in model container [2020-10-28 09:19:53,177 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 09:19:53" (1/1) ... [2020-10-28 09:19:53,187 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-28 09:19:53,206 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-28 09:19:53,463 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-28 09:19:55,233 INFO L203 MainTranslator]: Completed pre-run [2020-10-28 09:19:55,268 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-28 09:19:55,314 INFO L208 MainTranslator]: Completed translation [2020-10-28 09:19:55,320 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:19:55 WrapperNode [2020-10-28 09:19:55,321 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-28 09:19:55,324 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-28 09:19:55,325 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-28 09:19:55,325 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-28 09:19:55,340 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:19:55" (1/1) ... [2020-10-28 09:19:55,342 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:19:55" (1/1) ... [2020-10-28 09:19:55,353 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:19:55" (1/1) ... [2020-10-28 09:19:55,354 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:19:55" (1/1) ... [2020-10-28 09:19:55,372 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:19:55" (1/1) ... [2020-10-28 09:19:55,379 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:19:55" (1/1) ... [2020-10-28 09:19:55,386 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:19:55" (1/1) ... [2020-10-28 09:19:55,390 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-28 09:19:55,392 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-28 09:19:55,392 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-28 09:19:55,392 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-28 09:19:55,393 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:19:55" (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 09:19:55,474 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-28 09:19:55,474 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-28 09:19:55,474 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-28 09:19:55,475 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-10-28 09:19:55,475 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-28 09:19:55,475 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-28 09:19:55,475 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-28 09:19:55,475 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_perror_fail [2020-10-28 09:19:55,475 INFO L130 BoogieDeclarations]: Found specification of procedure __assert [2020-10-28 09:19:55,476 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-28 09:19:55,476 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-28 09:19:55,476 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-28 09:19:55,476 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-10-28 09:19:55,476 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-28 09:19:55,476 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-28 09:19:55,477 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-28 09:19:55,477 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-28 09:19:55,477 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-28 09:19:55,477 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-28 09:19:55,477 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-28 09:19:55,749 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-28 09:19:55,749 INFO L298 CfgBuilder]: Removed 2 assume(true) statements. [2020-10-28 09:19:55,752 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 09:19:55 BoogieIcfgContainer [2020-10-28 09:19:55,752 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-28 09:19:55,754 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-28 09:19:55,754 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-28 09:19:55,758 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-28 09:19:55,758 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.10 09:19:53" (1/3) ... [2020-10-28 09:19:55,760 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4d05ebc1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 09:19:55, skipping insertion in model container [2020-10-28 09:19:55,760 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:19:55" (2/3) ... [2020-10-28 09:19:55,760 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4d05ebc1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 09:19:55, skipping insertion in model container [2020-10-28 09:19:55,761 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 09:19:55" (3/3) ... [2020-10-28 09:19:55,762 INFO L111 eAbstractionObserver]: Analyzing ICFG array_of_struct_break.i [2020-10-28 09:19:55,777 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-28 09:19:55,782 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-28 09:19:55,802 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-28 09:19:55,859 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-28 09:19:55,859 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-28 09:19:55,859 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-28 09:19:55,859 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-28 09:19:55,860 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-28 09:19:55,860 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-28 09:19:55,863 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-28 09:19:55,863 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-28 09:19:55,905 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states. [2020-10-28 09:19:55,911 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-10-28 09:19:55,911 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 09:19:55,912 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 09:19:55,913 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 09:19:55,919 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 09:19:55,920 INFO L82 PathProgramCache]: Analyzing trace with hash -1575655028, now seen corresponding path program 1 times [2020-10-28 09:19:55,929 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 09:19:55,930 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1743347112] [2020-10-28 09:19:55,930 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 09:19:56,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:19:56,130 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:19:56,286 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:19:56,286 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 26 [2020-10-28 09:19:56,286 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:19:56,286 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 182 [2020-10-28 09:19:56,288 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:19:56,289 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:19:56,289 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:19:56,289 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-28 09:19:56,289 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:19:56,290 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-28 09:19:56,375 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 09:19:56,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:19:56,384 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:19:56,398 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:19:56,399 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 09:19:56,399 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:19:56,399 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-28 09:19:56,399 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:19:56,399 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:19:56,400 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:19:56,400 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:19:56,400 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:19:56,400 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:19:56,425 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 09:19:56,426 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1743347112] [2020-10-28 09:19:56,428 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 09:19:56,429 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-28 09:19:56,429 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1134587299] [2020-10-28 09:19:56,434 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-28 09:19:56,434 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 09:19:56,448 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-28 09:19:56,449 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-28 09:19:56,451 INFO L87 Difference]: Start difference. First operand 31 states. Second operand 3 states. [2020-10-28 09:19:56,566 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 09:19:56,566 INFO L93 Difference]: Finished difference Result 61 states and 82 transitions. [2020-10-28 09:19:56,567 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-28 09:19:56,568 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 16 [2020-10-28 09:19:56,568 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 09:19:56,576 INFO L225 Difference]: With dead ends: 61 [2020-10-28 09:19:56,577 INFO L226 Difference]: Without dead ends: 31 [2020-10-28 09:19:56,580 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 09:19:56,599 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2020-10-28 09:19:56,623 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 23. [2020-10-28 09:19:56,624 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2020-10-28 09:19:56,625 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 26 transitions. [2020-10-28 09:19:56,627 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 26 transitions. Word has length 16 [2020-10-28 09:19:56,627 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 09:19:56,627 INFO L481 AbstractCegarLoop]: Abstraction has 23 states and 26 transitions. [2020-10-28 09:19:56,628 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-28 09:19:56,628 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 26 transitions. [2020-10-28 09:19:56,628 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-10-28 09:19:56,629 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 09:19:56,629 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 09:19:56,629 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-28 09:19:56,630 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 09:19:56,630 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 09:19:56,630 INFO L82 PathProgramCache]: Analyzing trace with hash 585993527, now seen corresponding path program 1 times [2020-10-28 09:19:56,631 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 09:19:56,631 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1362872114] [2020-10-28 09:19:56,631 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 09:19:56,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:19:56,662 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:19:56,781 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:19:56,782 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 26 [2020-10-28 09:19:56,784 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:19:56,784 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 131 [2020-10-28 09:19:56,785 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:19:56,785 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:19:56,785 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 09:19:56,785 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-28 09:19:56,785 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-28 09:19:56,785 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:19:56,849 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 09:19:56,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:19:56,855 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:19:56,862 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:19:56,863 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 09:19:56,863 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:19:56,863 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-28 09:19:56,863 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:19:56,864 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:19:56,864 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:19:56,864 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:19:56,864 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:19:56,864 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:19:56,871 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 09:19:56,871 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1362872114] [2020-10-28 09:19:56,872 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 09:19:56,872 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-28 09:19:56,872 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1047847201] [2020-10-28 09:19:56,873 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-28 09:19:56,874 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 09:19:56,875 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-28 09:19:56,875 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-28 09:19:56,875 INFO L87 Difference]: Start difference. First operand 23 states and 26 transitions. Second operand 4 states. [2020-10-28 09:19:57,031 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 09:19:57,032 INFO L93 Difference]: Finished difference Result 56 states and 68 transitions. [2020-10-28 09:19:57,032 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-28 09:19:57,032 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 16 [2020-10-28 09:19:57,032 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 09:19:57,034 INFO L225 Difference]: With dead ends: 56 [2020-10-28 09:19:57,034 INFO L226 Difference]: Without dead ends: 42 [2020-10-28 09:19:57,035 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-28 09:19:57,036 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2020-10-28 09:19:57,043 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 24. [2020-10-28 09:19:57,044 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2020-10-28 09:19:57,045 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 27 transitions. [2020-10-28 09:19:57,045 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 27 transitions. Word has length 16 [2020-10-28 09:19:57,045 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 09:19:57,045 INFO L481 AbstractCegarLoop]: Abstraction has 24 states and 27 transitions. [2020-10-28 09:19:57,045 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-28 09:19:57,045 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 27 transitions. [2020-10-28 09:19:57,046 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-10-28 09:19:57,046 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 09:19:57,046 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 09:19:57,047 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-28 09:19:57,047 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 09:19:57,050 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 09:19:57,050 INFO L82 PathProgramCache]: Analyzing trace with hash 836905597, now seen corresponding path program 1 times [2020-10-28 09:19:57,051 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 09:19:57,051 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [657988691] [2020-10-28 09:19:57,051 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 09:19:57,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:19:57,073 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:19:57,118 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:19:57,118 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-10-28 09:19:57,118 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:19:57,119 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 52 [2020-10-28 09:19:57,119 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:19:57,119 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:19:57,119 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 09:19:57,119 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-10-28 09:19:57,120 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-10-28 09:19:57,120 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:19:57,161 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 09:19:57,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:19:57,166 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:19:57,173 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:19:57,173 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 09:19:57,173 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:19:57,174 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-28 09:19:57,174 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:19:57,174 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:19:57,174 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:19:57,175 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:19:57,175 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:19:57,175 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 09:19:57,183 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 09:19:57,183 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [657988691] [2020-10-28 09:19:57,183 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 09:19:57,184 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-28 09:19:57,184 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [718682519] [2020-10-28 09:19:57,184 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-28 09:19:57,185 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 09:19:57,185 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-28 09:19:57,186 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-28 09:19:57,186 INFO L87 Difference]: Start difference. First operand 24 states and 27 transitions. Second operand 4 states. [2020-10-28 09:19:57,317 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 09:19:57,317 INFO L93 Difference]: Finished difference Result 46 states and 53 transitions. [2020-10-28 09:19:57,318 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-28 09:19:57,318 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 17 [2020-10-28 09:19:57,318 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 09:19:57,319 INFO L225 Difference]: With dead ends: 46 [2020-10-28 09:19:57,319 INFO L226 Difference]: Without dead ends: 25 [2020-10-28 09:19:57,320 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-28 09:19:57,320 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25 states. [2020-10-28 09:19:57,325 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 24. [2020-10-28 09:19:57,325 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2020-10-28 09:19:57,326 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 25 transitions. [2020-10-28 09:19:57,326 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 25 transitions. Word has length 17 [2020-10-28 09:19:57,327 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 09:19:57,327 INFO L481 AbstractCegarLoop]: Abstraction has 24 states and 25 transitions. [2020-10-28 09:19:57,327 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-28 09:19:57,327 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 25 transitions. [2020-10-28 09:19:57,328 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-10-28 09:19:57,328 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 09:19:57,328 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 09:19:57,328 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-28 09:19:57,328 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 09:19:57,329 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 09:19:57,329 INFO L82 PathProgramCache]: Analyzing trace with hash -1977759324, now seen corresponding path program 1 times [2020-10-28 09:19:57,329 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 09:19:57,329 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [927517543] [2020-10-28 09:19:57,330 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 09:19:57,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:19:57,347 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:19:57,374 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:19:57,750 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:19:57,750 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 29 [2020-10-28 09:19:57,751 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 09:19:57,751 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 409 [2020-10-28 09:19:57,752 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:19:57,752 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:19:57,752 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-28 09:19:57,752 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-28 09:19:57,752 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-28 09:19:57,753 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 09:19:57,803 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 09:19:57,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:19:57,807 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:19:57,814 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:19:57,814 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 09:19:57,814 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:19:57,815 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-28 09:19:57,815 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:19:57,815 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:19:57,815 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:19:57,815 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:19:57,816 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:19:57,816 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:19:57,820 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 09:19:57,821 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [927517543] [2020-10-28 09:19:57,821 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 09:19:57,821 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-28 09:19:57,822 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [26029453] [2020-10-28 09:19:57,822 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-28 09:19:57,822 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 09:19:57,823 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-28 09:19:57,823 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-28 09:19:57,823 INFO L87 Difference]: Start difference. First operand 24 states and 25 transitions. Second operand 5 states. [2020-10-28 09:19:57,953 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 09:19:57,953 INFO L93 Difference]: Finished difference Result 53 states and 57 transitions. [2020-10-28 09:19:57,954 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-28 09:19:57,954 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 19 [2020-10-28 09:19:57,954 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 09:19:57,955 INFO L225 Difference]: With dead ends: 53 [2020-10-28 09:19:57,955 INFO L226 Difference]: Without dead ends: 39 [2020-10-28 09:19:57,956 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-28 09:19:57,956 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2020-10-28 09:19:57,962 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 27. [2020-10-28 09:19:57,962 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2020-10-28 09:19:57,963 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 28 transitions. [2020-10-28 09:19:57,963 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 28 transitions. Word has length 19 [2020-10-28 09:19:57,963 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 09:19:57,963 INFO L481 AbstractCegarLoop]: Abstraction has 27 states and 28 transitions. [2020-10-28 09:19:57,963 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-28 09:19:57,963 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 28 transitions. [2020-10-28 09:19:57,964 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2020-10-28 09:19:57,964 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 09:19:57,964 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 09:19:57,965 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-28 09:19:57,965 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 09:19:57,965 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 09:19:57,965 INFO L82 PathProgramCache]: Analyzing trace with hash -1335518697, now seen corresponding path program 2 times [2020-10-28 09:19:57,966 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 09:19:57,966 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1521368903] [2020-10-28 09:19:57,966 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 09:19:57,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:19:57,984 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:19:57,997 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:19:58,380 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:19:58,380 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-10-28 09:19:58,380 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 09:19:58,381 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 401 [2020-10-28 09:19:58,381 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:19:58,381 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:19:58,381 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 09:19:58,382 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-28 09:19:58,382 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-28 09:19:58,382 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 09:19:58,442 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 09:19:58,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:19:58,446 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:19:58,452 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:19:58,452 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 09:19:58,452 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:19:58,452 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-28 09:19:58,453 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:19:58,453 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:19:58,453 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:19:58,453 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:19:58,453 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:19:58,454 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 09:19:58,459 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 09:19:58,459 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1521368903] [2020-10-28 09:19:58,460 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 09:19:58,460 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-28 09:19:58,460 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [972058151] [2020-10-28 09:19:58,461 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-28 09:19:58,461 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 09:19:58,462 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-28 09:19:58,462 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-10-28 09:19:58,462 INFO L87 Difference]: Start difference. First operand 27 states and 28 transitions. Second operand 6 states. [2020-10-28 09:19:58,617 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 09:19:58,617 INFO L93 Difference]: Finished difference Result 61 states and 66 transitions. [2020-10-28 09:19:58,618 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-28 09:19:58,618 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 22 [2020-10-28 09:19:58,618 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 09:19:58,619 INFO L225 Difference]: With dead ends: 61 [2020-10-28 09:19:58,619 INFO L226 Difference]: Without dead ends: 47 [2020-10-28 09:19:58,620 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-10-28 09:19:58,621 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states. [2020-10-28 09:19:58,626 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 30. [2020-10-28 09:19:58,627 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2020-10-28 09:19:58,627 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 31 transitions. [2020-10-28 09:19:58,628 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 31 transitions. Word has length 22 [2020-10-28 09:19:58,628 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 09:19:58,628 INFO L481 AbstractCegarLoop]: Abstraction has 30 states and 31 transitions. [2020-10-28 09:19:58,628 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-28 09:19:58,628 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 31 transitions. [2020-10-28 09:19:58,629 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-10-28 09:19:58,629 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 09:19:58,630 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 09:19:58,630 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-28 09:19:58,630 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 09:19:58,631 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 09:19:58,631 INFO L82 PathProgramCache]: Analyzing trace with hash 1870663876, now seen corresponding path program 3 times [2020-10-28 09:19:58,631 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 09:19:58,631 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1611534899] [2020-10-28 09:19:58,632 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 09:19:58,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:19:58,651 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:19:58,666 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:19:59,336 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:19:59,336 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 35 [2020-10-28 09:19:59,336 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 09:19:59,336 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 691 [2020-10-28 09:19:59,337 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:19:59,337 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:19:59,337 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-28 09:19:59,337 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-28 09:19:59,337 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-28 09:19:59,338 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 09:19:59,399 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 09:19:59,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:19:59,403 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:19:59,408 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:19:59,408 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 09:19:59,408 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:19:59,408 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-28 09:19:59,409 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:19:59,409 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:19:59,409 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:19:59,409 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:19:59,409 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:19:59,410 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 09:19:59,415 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 09:19:59,415 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1611534899] [2020-10-28 09:19:59,416 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 09:19:59,416 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-28 09:19:59,416 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1262975481] [2020-10-28 09:19:59,416 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 09:19:59,417 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 09:19:59,417 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 09:19:59,418 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-10-28 09:19:59,418 INFO L87 Difference]: Start difference. First operand 30 states and 31 transitions. Second operand 7 states. [2020-10-28 09:19:59,596 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 09:19:59,597 INFO L93 Difference]: Finished difference Result 69 states and 75 transitions. [2020-10-28 09:19:59,597 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-28 09:19:59,597 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 25 [2020-10-28 09:19:59,598 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 09:19:59,598 INFO L225 Difference]: With dead ends: 69 [2020-10-28 09:19:59,599 INFO L226 Difference]: Without dead ends: 55 [2020-10-28 09:19:59,599 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2020-10-28 09:19:59,600 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55 states. [2020-10-28 09:19:59,605 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55 to 33. [2020-10-28 09:19:59,606 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33 states. [2020-10-28 09:19:59,606 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 34 transitions. [2020-10-28 09:19:59,606 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 34 transitions. Word has length 25 [2020-10-28 09:19:59,607 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 09:19:59,607 INFO L481 AbstractCegarLoop]: Abstraction has 33 states and 34 transitions. [2020-10-28 09:19:59,607 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 09:19:59,607 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 34 transitions. [2020-10-28 09:19:59,608 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-10-28 09:19:59,608 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 09:19:59,608 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 09:19:59,609 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-28 09:19:59,609 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 09:19:59,609 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 09:19:59,609 INFO L82 PathProgramCache]: Analyzing trace with hash 1478000375, now seen corresponding path program 4 times [2020-10-28 09:19:59,610 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 09:19:59,610 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [384927731] [2020-10-28 09:19:59,610 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 09:19:59,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:19:59,629 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:19:59,644 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:20:00,376 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:20:00,376 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 38 [2020-10-28 09:20:00,376 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 09:20:00,377 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 753 [2020-10-28 09:20:00,377 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:20:00,377 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:20:00,377 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 09:20:00,377 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-28 09:20:00,377 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-28 09:20:00,378 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:20:00,445 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 09:20:00,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:20:00,450 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:20:00,453 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:20:00,453 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 09:20:00,453 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:20:00,453 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 09:20:00,453 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:20:00,454 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:20:00,454 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:20:00,454 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:20:00,454 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:20:00,454 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:20:00,458 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 09:20:00,459 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [384927731] [2020-10-28 09:20:00,459 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 09:20:00,459 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-28 09:20:00,459 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [583747818] [2020-10-28 09:20:00,460 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-28 09:20:00,460 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 09:20:00,461 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-28 09:20:00,461 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-10-28 09:20:00,461 INFO L87 Difference]: Start difference. First operand 33 states and 34 transitions. Second operand 8 states. [2020-10-28 09:20:00,636 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 09:20:00,636 INFO L93 Difference]: Finished difference Result 77 states and 84 transitions. [2020-10-28 09:20:00,637 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-28 09:20:00,637 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 28 [2020-10-28 09:20:00,637 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 09:20:00,638 INFO L225 Difference]: With dead ends: 77 [2020-10-28 09:20:00,638 INFO L226 Difference]: Without dead ends: 63 [2020-10-28 09:20:00,639 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2020-10-28 09:20:00,639 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63 states. [2020-10-28 09:20:00,644 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63 to 36. [2020-10-28 09:20:00,645 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2020-10-28 09:20:00,645 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 37 transitions. [2020-10-28 09:20:00,646 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 37 transitions. Word has length 28 [2020-10-28 09:20:00,646 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 09:20:00,646 INFO L481 AbstractCegarLoop]: Abstraction has 36 states and 37 transitions. [2020-10-28 09:20:00,646 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-28 09:20:00,646 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 37 transitions. [2020-10-28 09:20:00,647 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2020-10-28 09:20:00,647 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 09:20:00,647 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 09:20:00,647 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-28 09:20:00,648 INFO L429 AbstractCegarLoop]: === Iteration 8 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 09:20:00,648 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 09:20:00,648 INFO L82 PathProgramCache]: Analyzing trace with hash -1164410908, now seen corresponding path program 5 times [2020-10-28 09:20:00,648 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 09:20:00,648 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1244824790] [2020-10-28 09:20:00,649 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 09:20:00,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:20:00,665 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:20:00,693 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:20:01,644 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:20:01,644 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 41 [2020-10-28 09:20:01,644 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 09:20:01,645 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 985 [2020-10-28 09:20:01,645 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:20:01,645 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:20:01,645 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-28 09:20:01,645 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-28 09:20:01,646 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 25 [2020-10-28 09:20:01,646 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 09:20:01,814 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 09:20:01,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:20:01,818 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:20:01,824 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:20:01,824 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 09:20:01,824 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:20:01,824 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-28 09:20:01,825 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:20:01,825 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:20:01,825 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:20:01,825 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:20:01,825 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:20:01,826 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:20:01,833 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2020-10-28 09:20:01,834 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1244824790] [2020-10-28 09:20:01,834 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 09:20:01,834 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-10-28 09:20:01,834 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [479546796] [2020-10-28 09:20:01,835 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-28 09:20:01,835 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 09:20:01,837 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-28 09:20:01,837 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2020-10-28 09:20:01,838 INFO L87 Difference]: Start difference. First operand 36 states and 37 transitions. Second operand 9 states. [2020-10-28 09:20:02,177 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 09:20:02,177 INFO L93 Difference]: Finished difference Result 49 states and 50 transitions. [2020-10-28 09:20:02,178 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-28 09:20:02,178 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 31 [2020-10-28 09:20:02,178 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 09:20:02,179 INFO L225 Difference]: With dead ends: 49 [2020-10-28 09:20:02,179 INFO L226 Difference]: Without dead ends: 45 [2020-10-28 09:20:02,180 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=55, Invalid=185, Unknown=0, NotChecked=0, Total=240 [2020-10-28 09:20:02,181 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45 states. [2020-10-28 09:20:02,185 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45 to 43. [2020-10-28 09:20:02,186 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 43 states. [2020-10-28 09:20:02,186 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 44 transitions. [2020-10-28 09:20:02,187 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 44 transitions. Word has length 31 [2020-10-28 09:20:02,187 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 09:20:02,187 INFO L481 AbstractCegarLoop]: Abstraction has 43 states and 44 transitions. [2020-10-28 09:20:02,187 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-28 09:20:02,187 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 44 transitions. [2020-10-28 09:20:02,188 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2020-10-28 09:20:02,188 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 09:20:02,189 INFO L422 BasicCegarLoop]: trace histogram [5, 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 09:20:02,189 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-28 09:20:02,189 INFO L429 AbstractCegarLoop]: === Iteration 9 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 09:20:02,189 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 09:20:02,189 INFO L82 PathProgramCache]: Analyzing trace with hash -412227624, now seen corresponding path program 1 times [2020-10-28 09:20:02,190 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 09:20:02,190 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1266812301] [2020-10-28 09:20:02,191 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 09:20:02,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:20:02,215 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:20:02,234 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:20:02,469 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:20:02,955 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:20:04,948 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:20:04,950 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 52 [2020-10-28 09:20:04,950 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-28 09:20:04,950 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2739 [2020-10-28 09:20:04,950 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:20:04,950 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:20:04,950 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-28 09:20:04,951 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-28 09:20:04,951 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-10-28 09:20:04,951 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:20:05,036 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 09:20:05,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:20:05,040 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:20:05,044 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:20:05,044 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 09:20:05,044 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:20:05,045 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-28 09:20:05,045 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:20:05,045 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:20:05,045 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:20:05,045 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:20:05,045 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:20:05,046 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:20:05,049 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2020-10-28 09:20:05,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:20:05,054 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:20:05,056 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:20:05,056 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 09:20:05,056 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:20:05,056 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-28 09:20:05,056 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:20:05,057 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:20:05,057 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:20:05,057 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-28 09:20:05,057 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:20:05,057 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:20:05,064 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 2 proven. 35 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-10-28 09:20:05,070 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1266812301] [2020-10-28 09:20:05,071 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 09:20:05,071 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-10-28 09:20:05,073 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1985244662] [2020-10-28 09:20:05,074 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-28 09:20:05,074 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 09:20:05,074 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-28 09:20:05,075 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2020-10-28 09:20:05,075 INFO L87 Difference]: Start difference. First operand 43 states and 44 transitions. Second operand 9 states. [2020-10-28 09:20:05,265 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 09:20:05,265 INFO L93 Difference]: Finished difference Result 96 states and 103 transitions. [2020-10-28 09:20:05,266 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-28 09:20:05,266 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 40 [2020-10-28 09:20:05,266 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 09:20:05,267 INFO L225 Difference]: With dead ends: 96 [2020-10-28 09:20:05,267 INFO L226 Difference]: Without dead ends: 75 [2020-10-28 09:20:05,268 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2020-10-28 09:20:05,268 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 75 states. [2020-10-28 09:20:05,282 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 75 to 46. [2020-10-28 09:20:05,282 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 46 states. [2020-10-28 09:20:05,283 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 47 transitions. [2020-10-28 09:20:05,286 INFO L78 Accepts]: Start accepts. Automaton has 46 states and 47 transitions. Word has length 40 [2020-10-28 09:20:05,286 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 09:20:05,286 INFO L481 AbstractCegarLoop]: Abstraction has 46 states and 47 transitions. [2020-10-28 09:20:05,287 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-28 09:20:05,287 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states and 47 transitions. [2020-10-28 09:20:05,288 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2020-10-28 09:20:05,288 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 09:20:05,288 INFO L422 BasicCegarLoop]: trace histogram [6, 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 09:20:05,288 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-28 09:20:05,288 INFO L429 AbstractCegarLoop]: === Iteration 10 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 09:20:05,289 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 09:20:05,293 INFO L82 PathProgramCache]: Analyzing trace with hash 1497034053, now seen corresponding path program 2 times [2020-10-28 09:20:05,293 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 09:20:05,293 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [65302192] [2020-10-28 09:20:05,293 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 09:20:05,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:20:05,315 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:20:05,337 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:20:05,873 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:20:06,730 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:20:08,139 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:20:08,140 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 55 [2020-10-28 09:20:08,140 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-28 09:20:08,140 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2830 [2020-10-28 09:20:08,140 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:20:08,140 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:20:08,140 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-28 09:20:08,141 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-28 09:20:08,141 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-10-28 09:20:08,142 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 09:20:08,242 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 09:20:08,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:20:08,245 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:20:08,251 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:20:08,252 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 09:20:08,252 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:20:08,252 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-28 09:20:08,252 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:20:08,253 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:20:08,253 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:20:08,253 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:20:08,253 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:20:08,253 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:20:08,256 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-10-28 09:20:08,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:20:08,260 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:20:08,262 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:20:08,262 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 09:20:08,262 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:20:08,262 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 09:20:08,262 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:20:08,263 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:20:08,263 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:20:08,263 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-28 09:20:08,263 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:20:08,263 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:20:08,271 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 2 proven. 51 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-10-28 09:20:08,272 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [65302192] [2020-10-28 09:20:08,272 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 09:20:08,272 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-10-28 09:20:08,272 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1607696871] [2020-10-28 09:20:08,274 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-28 09:20:08,274 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 09:20:08,275 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-28 09:20:08,275 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2020-10-28 09:20:08,275 INFO L87 Difference]: Start difference. First operand 46 states and 47 transitions. Second operand 10 states. [2020-10-28 09:20:08,519 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 09:20:08,519 INFO L93 Difference]: Finished difference Result 104 states and 112 transitions. [2020-10-28 09:20:08,520 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-28 09:20:08,520 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 43 [2020-10-28 09:20:08,520 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 09:20:08,522 INFO L225 Difference]: With dead ends: 104 [2020-10-28 09:20:08,522 INFO L226 Difference]: Without dead ends: 83 [2020-10-28 09:20:08,523 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 09:20:08,524 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 83 states. [2020-10-28 09:20:08,542 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 83 to 49. [2020-10-28 09:20:08,543 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 49 states. [2020-10-28 09:20:08,546 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 50 transitions. [2020-10-28 09:20:08,546 INFO L78 Accepts]: Start accepts. Automaton has 49 states and 50 transitions. Word has length 43 [2020-10-28 09:20:08,547 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 09:20:08,550 INFO L481 AbstractCegarLoop]: Abstraction has 49 states and 50 transitions. [2020-10-28 09:20:08,550 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-28 09:20:08,550 INFO L276 IsEmpty]: Start isEmpty. Operand 49 states and 50 transitions. [2020-10-28 09:20:08,551 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2020-10-28 09:20:08,551 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 09:20:08,551 INFO L422 BasicCegarLoop]: trace histogram [7, 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 09:20:08,552 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-28 09:20:08,552 INFO L429 AbstractCegarLoop]: === Iteration 11 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 09:20:08,552 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 09:20:08,552 INFO L82 PathProgramCache]: Analyzing trace with hash 2059752632, now seen corresponding path program 3 times [2020-10-28 09:20:08,553 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 09:20:08,553 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [122728107] [2020-10-28 09:20:08,553 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 09:20:08,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:20:08,575 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:20:08,598 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:20:08,925 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:20:09,788 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:20:12,541 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:20:12,542 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 58 [2020-10-28 09:20:12,542 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-28 09:20:12,542 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3974 [2020-10-28 09:20:12,542 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:20:12,542 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:20:12,543 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-10-28 09:20:12,543 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-28 09:20:12,543 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 42 [2020-10-28 09:20:12,543 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:20:12,754 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 09:20:12,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:20:12,757 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:20:12,761 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:20:12,761 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 09:20:12,761 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:20:12,762 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-28 09:20:12,762 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:20:12,762 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:20:12,762 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:20:12,762 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:20:12,762 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:20:12,762 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:20:12,779 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2020-10-28 09:20:12,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:20:12,785 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:20:12,788 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:20:12,790 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 09:20:12,790 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:20:12,791 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-28 09:20:12,791 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:20:12,791 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:20:12,791 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 09:20:12,791 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:20:12,791 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 09:20:12,792 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:20:12,808 INFO L134 CoverageAnalysis]: Checked inductivity of 75 backedges. 2 proven. 33 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2020-10-28 09:20:12,809 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [122728107] [2020-10-28 09:20:12,809 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 09:20:12,809 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-10-28 09:20:12,809 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1346753122] [2020-10-28 09:20:12,810 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-28 09:20:12,810 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 09:20:12,810 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-28 09:20:12,811 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=91, Unknown=0, NotChecked=0, Total=110 [2020-10-28 09:20:12,811 INFO L87 Difference]: Start difference. First operand 49 states and 50 transitions. Second operand 11 states. [2020-10-28 09:20:13,250 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 09:20:13,250 INFO L93 Difference]: Finished difference Result 64 states and 65 transitions. [2020-10-28 09:20:13,250 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-10-28 09:20:13,251 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 46 [2020-10-28 09:20:13,251 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 09:20:13,252 INFO L225 Difference]: With dead ends: 64 [2020-10-28 09:20:13,252 INFO L226 Difference]: Without dead ends: 60 [2020-10-28 09:20:13,252 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=68, Invalid=312, Unknown=0, NotChecked=0, Total=380 [2020-10-28 09:20:13,253 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60 states. [2020-10-28 09:20:13,259 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60 to 58. [2020-10-28 09:20:13,260 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 58 states. [2020-10-28 09:20:13,260 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58 states to 58 states and 59 transitions. [2020-10-28 09:20:13,260 INFO L78 Accepts]: Start accepts. Automaton has 58 states and 59 transitions. Word has length 46 [2020-10-28 09:20:13,261 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 09:20:13,261 INFO L481 AbstractCegarLoop]: Abstraction has 58 states and 59 transitions. [2020-10-28 09:20:13,261 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-28 09:20:13,261 INFO L276 IsEmpty]: Start isEmpty. Operand 58 states and 59 transitions. [2020-10-28 09:20:13,262 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2020-10-28 09:20:13,262 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 09:20:13,262 INFO L422 BasicCegarLoop]: trace histogram [7, 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 09:20:13,262 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-28 09:20:13,262 INFO L429 AbstractCegarLoop]: === Iteration 12 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 09:20:13,263 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 09:20:13,263 INFO L82 PathProgramCache]: Analyzing trace with hash -1220460156, now seen corresponding path program 4 times [2020-10-28 09:20:13,263 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 09:20:13,263 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1207289949] [2020-10-28 09:20:13,264 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 09:20:13,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:20:13,285 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:20:13,320 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:20:13,597 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:20:13,711 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:20:14,388 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:20:15,183 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:20:18,282 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:20:18,282 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 69 [2020-10-28 09:20:18,282 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-28 09:20:18,282 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5005 [2020-10-28 09:20:18,283 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:20:18,283 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:20:18,283 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-28 09:20:18,283 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-28 09:20:18,283 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-10-28 09:20:18,284 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:20:18,387 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 09:20:18,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:20:18,390 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:20:18,394 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:20:18,394 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 09:20:18,394 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:20:18,395 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-28 09:20:18,395 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:20:18,395 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:20:18,395 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:20:18,395 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:20:18,395 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:20:18,396 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:20:18,398 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2020-10-28 09:20:18,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:20:18,400 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:20:18,402 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:20:18,402 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 09:20:18,402 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:20:18,402 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-28 09:20:18,403 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:20:18,403 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:20:18,403 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:20:18,403 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-28 09:20:18,403 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:20:18,403 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:20:18,406 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-10-28 09:20:18,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:20:18,408 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:20:18,410 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:20:18,410 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 09:20:18,411 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:20:18,411 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 09:20:18,411 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:20:18,411 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:20:18,411 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:20:18,411 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-28 09:20:18,412 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:20:18,412 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:20:18,417 INFO L134 CoverageAnalysis]: Checked inductivity of 89 backedges. 4 proven. 70 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2020-10-28 09:20:18,418 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1207289949] [2020-10-28 09:20:18,418 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 09:20:18,418 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-10-28 09:20:18,419 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1485411226] [2020-10-28 09:20:18,419 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-28 09:20:18,419 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 09:20:18,420 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-28 09:20:18,420 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-10-28 09:20:18,420 INFO L87 Difference]: Start difference. First operand 58 states and 59 transitions. Second operand 11 states. [2020-10-28 09:20:18,662 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 09:20:18,662 INFO L93 Difference]: Finished difference Result 125 states and 133 transitions. [2020-10-28 09:20:18,663 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-28 09:20:18,663 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 55 [2020-10-28 09:20:18,663 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 09:20:18,664 INFO L225 Difference]: With dead ends: 125 [2020-10-28 09:20:18,664 INFO L226 Difference]: Without dead ends: 95 [2020-10-28 09:20:18,665 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 09:20:18,665 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 95 states. [2020-10-28 09:20:18,676 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 95 to 61. [2020-10-28 09:20:18,676 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 61 states. [2020-10-28 09:20:18,677 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61 states to 61 states and 62 transitions. [2020-10-28 09:20:18,678 INFO L78 Accepts]: Start accepts. Automaton has 61 states and 62 transitions. Word has length 55 [2020-10-28 09:20:18,678 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 09:20:18,679 INFO L481 AbstractCegarLoop]: Abstraction has 61 states and 62 transitions. [2020-10-28 09:20:18,679 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-28 09:20:18,679 INFO L276 IsEmpty]: Start isEmpty. Operand 61 states and 62 transitions. [2020-10-28 09:20:18,681 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2020-10-28 09:20:18,681 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 09:20:18,681 INFO L422 BasicCegarLoop]: trace histogram [8, 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 09:20:18,682 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-28 09:20:18,682 INFO L429 AbstractCegarLoop]: === Iteration 13 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 09:20:18,683 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 09:20:18,684 INFO L82 PathProgramCache]: Analyzing trace with hash -1236986761, now seen corresponding path program 5 times [2020-10-28 09:20:18,684 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 09:20:18,684 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [159482468] [2020-10-28 09:20:18,684 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 09:20:18,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:20:18,708 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:20:18,730 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:20:18,906 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:20:19,163 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:20:19,904 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:20:20,985 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:20:23,702 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:20:23,702 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 72 [2020-10-28 09:20:23,703 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-28 09:20:23,703 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-10-28 09:20:23,703 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:20:23,703 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:20:23,703 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 16 [2020-10-28 09:20:23,703 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-28 09:20:23,703 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 56 [2020-10-28 09:20:23,704 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:20:23,977 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 09:20:23,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:20:23,980 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:20:23,987 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:20:23,988 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 09:20:23,988 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:20:23,988 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-28 09:20:23,988 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:20:23,988 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:20:23,988 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:20:23,989 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:20:23,989 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:20:23,989 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:20:23,992 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-10-28 09:20:23,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:20:23,995 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:20:23,998 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:20:23,998 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 09:20:23,998 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:20:23,998 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 09:20:23,999 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:20:23,999 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:20:23,999 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 09:20:23,999 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:20:23,999 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 09:20:23,999 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:20:24,001 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-10-28 09:20:24,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:20:24,004 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:20:24,007 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:20:24,007 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 09:20:24,007 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:20:24,007 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 09:20:24,007 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:20:24,008 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:20:24,008 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 09:20:24,008 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:20:24,009 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 09:20:24,009 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 09:20:24,023 INFO L134 CoverageAnalysis]: Checked inductivity of 111 backedges. 4 proven. 63 refuted. 0 times theorem prover too weak. 44 trivial. 0 not checked. [2020-10-28 09:20:24,023 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [159482468] [2020-10-28 09:20:24,023 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 09:20:24,023 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-10-28 09:20:24,024 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1083158989] [2020-10-28 09:20:24,025 INFO L461 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-28 09:20:24,025 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 09:20:24,026 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-28 09:20:24,026 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=133, Unknown=0, NotChecked=0, Total=156 [2020-10-28 09:20:24,026 INFO L87 Difference]: Start difference. First operand 61 states and 62 transitions. Second operand 13 states. [2020-10-28 09:20:24,708 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 09:20:24,709 INFO L93 Difference]: Finished difference Result 76 states and 77 transitions. [2020-10-28 09:20:24,709 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-10-28 09:20:24,709 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 58 [2020-10-28 09:20:24,710 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 09:20:24,710 INFO L225 Difference]: With dead ends: 76 [2020-10-28 09:20:24,710 INFO L226 Difference]: Without dead ends: 72 [2020-10-28 09:20:24,711 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 51 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=81, Invalid=471, Unknown=0, NotChecked=0, Total=552 [2020-10-28 09:20:24,712 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 72 states. [2020-10-28 09:20:24,719 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 72 to 70. [2020-10-28 09:20:24,719 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 70 states. [2020-10-28 09:20:24,720 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 70 states to 70 states and 71 transitions. [2020-10-28 09:20:24,720 INFO L78 Accepts]: Start accepts. Automaton has 70 states and 71 transitions. Word has length 58 [2020-10-28 09:20:24,720 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 09:20:24,720 INFO L481 AbstractCegarLoop]: Abstraction has 70 states and 71 transitions. [2020-10-28 09:20:24,720 INFO L482 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-28 09:20:24,721 INFO L276 IsEmpty]: Start isEmpty. Operand 70 states and 71 transitions. [2020-10-28 09:20:24,721 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2020-10-28 09:20:24,722 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 09:20:24,722 INFO L422 BasicCegarLoop]: trace histogram [8, 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 09:20:24,722 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-28 09:20:24,722 INFO L429 AbstractCegarLoop]: === Iteration 14 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 09:20:24,722 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 09:20:24,723 INFO L82 PathProgramCache]: Analyzing trace with hash 148097189, now seen corresponding path program 6 times [2020-10-28 09:20:24,723 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 09:20:24,723 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [689168464] [2020-10-28 09:20:24,723 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 09:20:24,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:20:24,746 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:20:24,803 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:20:25,158 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:20:25,952 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:20:26,018 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:20:26,867 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:20:29,741 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:20:29,742 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 83 [2020-10-28 09:20:29,742 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-28 09:20:29,742 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5003 [2020-10-28 09:20:29,742 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:20:29,742 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:20:29,742 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-28 09:20:29,743 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-28 09:20:29,743 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-10-28 09:20:29,743 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:20:29,927 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 09:20:29,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:20:29,933 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:20:29,936 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:20:29,936 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 09:20:29,936 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:20:29,937 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-28 09:20:29,937 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:20:29,937 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:20:29,937 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:20:29,937 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:20:29,937 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:20:29,938 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:20:29,940 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-10-28 09:20:29,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:20:29,943 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:20:29,944 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:20:29,945 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 09:20:29,945 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:20:29,945 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-28 09:20:29,945 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:20:29,945 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:20:29,945 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:20:29,946 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-28 09:20:29,946 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:20:29,946 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:20:29,948 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-10-28 09:20:29,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:20:29,952 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:20:29,953 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:20:29,954 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 09:20:29,954 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:20:29,954 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 09:20:29,954 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:20:29,954 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:20:29,954 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:20:29,955 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-28 09:20:29,955 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:20:29,955 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:20:29,956 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2020-10-28 09:20:29,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:20:29,958 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:20:29,959 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:20:29,960 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 09:20:29,960 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:20:29,960 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-28 09:20:29,960 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:20:29,960 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:20:29,961 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:20:29,961 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-28 09:20:29,961 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:20:29,961 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:20:29,970 INFO L134 CoverageAnalysis]: Checked inductivity of 134 backedges. 6 proven. 92 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2020-10-28 09:20:29,971 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [689168464] [2020-10-28 09:20:29,971 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 09:20:29,971 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-10-28 09:20:29,971 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [935632092] [2020-10-28 09:20:29,972 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-28 09:20:29,972 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 09:20:29,972 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-28 09:20:29,972 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=75, Unknown=0, NotChecked=0, Total=132 [2020-10-28 09:20:29,973 INFO L87 Difference]: Start difference. First operand 70 states and 71 transitions. Second operand 12 states. [2020-10-28 09:20:30,274 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 09:20:30,274 INFO L93 Difference]: Finished difference Result 146 states and 154 transitions. [2020-10-28 09:20:30,275 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-28 09:20:30,275 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 67 [2020-10-28 09:20:30,275 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 09:20:30,276 INFO L225 Difference]: With dead ends: 146 [2020-10-28 09:20:30,276 INFO L226 Difference]: Without dead ends: 107 [2020-10-28 09:20:30,277 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 09:20:30,277 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 107 states. [2020-10-28 09:20:30,286 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 107 to 73. [2020-10-28 09:20:30,286 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 73 states. [2020-10-28 09:20:30,287 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 73 states to 73 states and 74 transitions. [2020-10-28 09:20:30,287 INFO L78 Accepts]: Start accepts. Automaton has 73 states and 74 transitions. Word has length 67 [2020-10-28 09:20:30,287 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 09:20:30,287 INFO L481 AbstractCegarLoop]: Abstraction has 73 states and 74 transitions. [2020-10-28 09:20:30,287 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-28 09:20:30,287 INFO L276 IsEmpty]: Start isEmpty. Operand 73 states and 74 transitions. [2020-10-28 09:20:30,288 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2020-10-28 09:20:30,288 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 09:20:30,288 INFO L422 BasicCegarLoop]: trace histogram [9, 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 09:20:30,289 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-10-28 09:20:30,289 INFO L429 AbstractCegarLoop]: === Iteration 15 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 09:20:30,289 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 09:20:30,289 INFO L82 PathProgramCache]: Analyzing trace with hash 2097923864, now seen corresponding path program 7 times [2020-10-28 09:20:30,290 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 09:20:30,290 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2041218077] [2020-10-28 09:20:30,290 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 09:20:30,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:20:30,309 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:20:30,352 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:20:30,568 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:20:30,819 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:20:31,097 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:20:32,279 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:20:32,496 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:20:32,561 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:20:32,770 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:20:33,054 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:20:33,078 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:20:33,196 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:20:33,361 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:20:35,303 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:20:35,303 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 86 [2020-10-28 09:20:35,304 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 13 [2020-10-28 09:20:35,304 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-10-28 09:20:35,304 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:20:35,304 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:20:35,304 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-28 09:20:35,304 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-28 09:20:35,304 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 29 [2020-10-28 09:20:35,305 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:20:35,448 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 09:20:35,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:20:35,451 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:20:35,454 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:20:35,454 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 09:20:35,455 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:20:35,455 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 09:20:35,455 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:20:35,455 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:20:35,455 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:20:35,455 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:20:35,456 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:20:35,456 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:20:35,458 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-10-28 09:20:35,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:20:35,459 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:20:35,460 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:20:35,461 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 09:20:35,461 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:20:35,461 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-28 09:20:35,461 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:20:35,461 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:20:35,461 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:20:35,462 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-28 09:20:35,462 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:20:35,462 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:20:35,463 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2020-10-28 09:20:35,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:20:35,465 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:20:35,465 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:20:35,466 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 09:20:35,466 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:20:35,466 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-28 09:20:35,466 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:20:35,466 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:20:35,466 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:20:35,467 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-28 09:20:35,467 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:20:35,467 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:20:35,468 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2020-10-28 09:20:35,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:20:35,470 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:20:35,471 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:20:35,471 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 09:20:35,471 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:20:35,471 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-28 09:20:35,472 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:20:35,472 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:20:35,472 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:20:35,472 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-28 09:20:35,472 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:20:35,472 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:20:35,480 INFO L134 CoverageAnalysis]: Checked inductivity of 159 backedges. 6 proven. 117 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2020-10-28 09:20:35,481 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2041218077] [2020-10-28 09:20:35,482 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 09:20:35,482 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-10-28 09:20:35,482 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [348950877] [2020-10-28 09:20:35,482 INFO L461 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-28 09:20:35,483 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 09:20:35,483 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-28 09:20:35,483 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=88, Unknown=0, NotChecked=0, Total=156 [2020-10-28 09:20:35,483 INFO L87 Difference]: Start difference. First operand 73 states and 74 transitions. Second operand 13 states. [2020-10-28 09:20:35,824 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 09:20:35,825 INFO L93 Difference]: Finished difference Result 154 states and 163 transitions. [2020-10-28 09:20:35,825 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-10-28 09:20:35,825 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 70 [2020-10-28 09:20:35,826 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 09:20:35,827 INFO L225 Difference]: With dead ends: 154 [2020-10-28 09:20:35,827 INFO L226 Difference]: Without dead ends: 115 [2020-10-28 09:20:35,828 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 09:20:35,828 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 115 states. [2020-10-28 09:20:35,837 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 115 to 76. [2020-10-28 09:20:35,837 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 76 states. [2020-10-28 09:20:35,837 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76 states to 76 states and 77 transitions. [2020-10-28 09:20:35,838 INFO L78 Accepts]: Start accepts. Automaton has 76 states and 77 transitions. Word has length 70 [2020-10-28 09:20:35,838 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 09:20:35,838 INFO L481 AbstractCegarLoop]: Abstraction has 76 states and 77 transitions. [2020-10-28 09:20:35,838 INFO L482 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-28 09:20:35,838 INFO L276 IsEmpty]: Start isEmpty. Operand 76 states and 77 transitions. [2020-10-28 09:20:35,839 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2020-10-28 09:20:35,839 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 09:20:35,839 INFO L422 BasicCegarLoop]: trace histogram [10, 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 09:20:35,839 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-10-28 09:20:35,839 INFO L429 AbstractCegarLoop]: === Iteration 16 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 09:20:35,840 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 09:20:35,840 INFO L82 PathProgramCache]: Analyzing trace with hash -48279611, now seen corresponding path program 8 times [2020-10-28 09:20:35,840 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 09:20:35,840 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1469102363] [2020-10-28 09:20:35,841 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 09:20:35,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:20:35,860 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:20:35,914 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:20:35,988 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:20:36,209 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:20:39,871 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:20:39,950 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:20:40,040 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:20:40,188 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:20:40,403 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:20:40,518 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:20:40,673 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:20:40,857 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:20:40,857 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 89 [2020-10-28 09:20:40,857 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 11 [2020-10-28 09:20:40,857 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5003 [2020-10-28 09:20:40,857 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:20:40,857 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:20:40,858 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-28 09:20:40,858 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-28 09:20:40,858 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 32 [2020-10-28 09:20:40,858 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:20:41,032 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 09:20:41,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:20:41,035 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:20:41,038 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:20:41,038 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 09:20:41,038 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:20:41,038 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 09:20:41,039 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:20:41,039 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:20:41,039 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:20:41,039 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:20:41,039 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:20:41,039 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:20:41,042 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-10-28 09:20:41,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:20:41,043 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:20:41,044 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:20:41,044 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 09:20:41,045 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:20:41,045 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-28 09:20:41,045 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:20:41,045 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:20:41,045 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:20:41,045 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-28 09:20:41,045 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:20:41,046 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:20:41,047 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2020-10-28 09:20:41,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:20:41,048 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:20:41,049 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:20:41,049 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 09:20:41,049 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:20:41,049 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-28 09:20:41,049 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:20:41,050 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:20:41,050 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:20:41,050 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-28 09:20:41,050 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:20:41,050 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:20:41,051 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2020-10-28 09:20:41,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:20:41,053 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:20:41,053 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:20:41,054 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 09:20:41,054 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:20:41,054 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-28 09:20:41,054 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:20:41,054 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:20:41,054 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:20:41,054 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-28 09:20:41,054 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:20:41,055 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:20:41,062 INFO L134 CoverageAnalysis]: Checked inductivity of 187 backedges. 6 proven. 145 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2020-10-28 09:20:41,062 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1469102363] [2020-10-28 09:20:41,063 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 09:20:41,063 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2020-10-28 09:20:41,063 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [753638320] [2020-10-28 09:20:41,063 INFO L461 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-10-28 09:20:41,063 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 09:20:41,064 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-10-28 09:20:41,064 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=80, Invalid=102, Unknown=0, NotChecked=0, Total=182 [2020-10-28 09:20:41,064 INFO L87 Difference]: Start difference. First operand 76 states and 77 transitions. Second operand 14 states. [2020-10-28 09:20:41,583 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 09:20:41,584 INFO L93 Difference]: Finished difference Result 162 states and 172 transitions. [2020-10-28 09:20:41,584 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-28 09:20:41,584 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 73 [2020-10-28 09:20:41,585 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 09:20:41,586 INFO L225 Difference]: With dead ends: 162 [2020-10-28 09:20:41,586 INFO L226 Difference]: Without dead ends: 123 [2020-10-28 09:20:41,587 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=94, Invalid=116, Unknown=0, NotChecked=0, Total=210 [2020-10-28 09:20:41,587 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 123 states. [2020-10-28 09:20:41,596 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 123 to 79. [2020-10-28 09:20:41,596 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 79 states. [2020-10-28 09:20:41,597 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 79 states to 79 states and 80 transitions. [2020-10-28 09:20:41,597 INFO L78 Accepts]: Start accepts. Automaton has 79 states and 80 transitions. Word has length 73 [2020-10-28 09:20:41,597 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 09:20:41,597 INFO L481 AbstractCegarLoop]: Abstraction has 79 states and 80 transitions. [2020-10-28 09:20:41,597 INFO L482 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-10-28 09:20:41,597 INFO L276 IsEmpty]: Start isEmpty. Operand 79 states and 80 transitions. [2020-10-28 09:20:41,598 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2020-10-28 09:20:41,598 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 09:20:41,598 INFO L422 BasicCegarLoop]: trace histogram [11, 11, 11, 4, 4, 4, 4, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 09:20:41,598 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-10-28 09:20:41,599 INFO L429 AbstractCegarLoop]: === Iteration 17 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 09:20:41,599 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 09:20:41,599 INFO L82 PathProgramCache]: Analyzing trace with hash 1582132216, now seen corresponding path program 9 times [2020-10-28 09:20:41,599 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 09:20:41,599 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1228064175] [2020-10-28 09:20:41,600 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 09:20:41,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:20:41,628 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:20:41,708 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:20:41,958 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:20:42,250 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:20:42,688 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:20:43,011 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:20:43,172 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:20:43,366 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:20:43,537 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:20:43,732 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:20:43,938 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:20:44,376 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:20:46,621 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:20:46,621 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 92 [2020-10-28 09:20:46,621 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 12 [2020-10-28 09:20:46,621 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5003 [2020-10-28 09:20:46,621 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:20:46,621 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:20:46,621 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-10-28 09:20:46,621 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-28 09:20:46,621 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 35 [2020-10-28 09:20:46,622 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:20:46,802 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 09:20:46,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:20:46,805 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:20:46,808 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:20:46,808 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 09:20:46,808 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:20:46,808 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 09:20:46,809 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:20:46,809 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:20:46,809 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:20:46,809 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:20:46,809 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:20:46,809 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:20:46,812 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-10-28 09:20:46,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:20:46,813 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:20:46,814 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:20:46,814 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 09:20:46,814 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:20:46,815 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-28 09:20:46,815 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:20:46,815 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:20:46,815 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:20:46,815 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-28 09:20:46,815 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:20:46,815 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:20:46,816 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2020-10-28 09:20:46,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:20:46,818 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:20:46,819 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:20:46,819 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 09:20:46,819 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:20:46,819 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-28 09:20:46,819 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:20:46,819 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:20:46,819 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:20:46,820 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-28 09:20:46,820 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:20:46,820 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:20:46,821 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2020-10-28 09:20:46,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:20:46,822 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:20:46,823 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:20:46,823 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 09:20:46,824 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:20:46,824 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-28 09:20:46,824 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:20:46,824 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:20:46,824 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:20:46,824 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-28 09:20:46,824 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:20:46,825 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:20:46,833 INFO L134 CoverageAnalysis]: Checked inductivity of 218 backedges. 6 proven. 176 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2020-10-28 09:20:46,833 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1228064175] [2020-10-28 09:20:46,833 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 09:20:46,834 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2020-10-28 09:20:46,834 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [380994848] [2020-10-28 09:20:46,834 INFO L461 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-28 09:20:46,834 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 09:20:46,835 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-28 09:20:46,835 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=93, Invalid=117, Unknown=0, NotChecked=0, Total=210 [2020-10-28 09:20:46,835 INFO L87 Difference]: Start difference. First operand 79 states and 80 transitions. Second operand 15 states. [2020-10-28 09:20:47,204 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 09:20:47,205 INFO L93 Difference]: Finished difference Result 170 states and 181 transitions. [2020-10-28 09:20:47,208 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-10-28 09:20:47,209 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 76 [2020-10-28 09:20:47,209 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 09:20:47,210 INFO L225 Difference]: With dead ends: 170 [2020-10-28 09:20:47,210 INFO L226 Difference]: Without dead ends: 131 [2020-10-28 09:20:47,211 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 9 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 09:20:47,212 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 131 states. [2020-10-28 09:20:47,231 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 131 to 82. [2020-10-28 09:20:47,231 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 82 states. [2020-10-28 09:20:47,232 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 82 states to 82 states and 83 transitions. [2020-10-28 09:20:47,232 INFO L78 Accepts]: Start accepts. Automaton has 82 states and 83 transitions. Word has length 76 [2020-10-28 09:20:47,232 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 09:20:47,232 INFO L481 AbstractCegarLoop]: Abstraction has 82 states and 83 transitions. [2020-10-28 09:20:47,232 INFO L482 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-28 09:20:47,233 INFO L276 IsEmpty]: Start isEmpty. Operand 82 states and 83 transitions. [2020-10-28 09:20:47,233 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2020-10-28 09:20:47,233 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 09:20:47,233 INFO L422 BasicCegarLoop]: trace histogram [12, 12, 12, 4, 4, 4, 4, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 09:20:47,234 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-10-28 09:20:47,234 INFO L429 AbstractCegarLoop]: === Iteration 18 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 09:20:47,234 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 09:20:47,234 INFO L82 PathProgramCache]: Analyzing trace with hash 1395719909, now seen corresponding path program 10 times [2020-10-28 09:20:47,234 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 09:20:47,234 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [378274580] [2020-10-28 09:20:47,235 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 09:20:47,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:20:47,261 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:20:47,434 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:20:47,547 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:20:47,708 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:20:48,414 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:20:48,737 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:20:49,761 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:20:49,863 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:20:51,990 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:20:52,124 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:20:52,251 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:20:52,252 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 95 [2020-10-28 09:20:52,252 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 10 [2020-10-28 09:20:52,252 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-10-28 09:20:52,252 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:20:52,252 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:20:52,252 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-10-28 09:20:52,252 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-28 09:20:52,252 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 38 [2020-10-28 09:20:52,252 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:20:52,466 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 09:20:52,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:20:52,469 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:20:52,472 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:20:52,472 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 09:20:52,472 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:20:52,472 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 09:20:52,472 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:20:52,472 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:20:52,473 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:20:52,473 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:20:52,473 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:20:52,473 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:20:52,475 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2020-10-28 09:20:52,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:20:52,477 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:20:52,477 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:20:52,478 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 09:20:52,478 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:20:52,478 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-28 09:20:52,478 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:20:52,478 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:20:52,478 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:20:52,479 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-28 09:20:52,479 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:20:52,479 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:20:52,480 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2020-10-28 09:20:52,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:20:52,481 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:20:52,482 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:20:52,482 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 09:20:52,482 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:20:52,482 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-28 09:20:52,482 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:20:52,483 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:20:52,483 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:20:52,483 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-28 09:20:52,483 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:20:52,483 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:20:52,484 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2020-10-28 09:20:52,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:20:52,485 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:20:52,486 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:20:52,486 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 09:20:52,486 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:20:52,486 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-28 09:20:52,487 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:20:52,487 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:20:52,487 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:20:52,487 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-28 09:20:52,487 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:20:52,487 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:20:52,497 INFO L134 CoverageAnalysis]: Checked inductivity of 252 backedges. 6 proven. 210 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2020-10-28 09:20:52,497 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [378274580] [2020-10-28 09:20:52,497 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 09:20:52,497 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2020-10-28 09:20:52,497 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1807080930] [2020-10-28 09:20:52,498 INFO L461 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-10-28 09:20:52,498 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 09:20:52,498 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-10-28 09:20:52,499 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=107, Invalid=133, Unknown=0, NotChecked=0, Total=240 [2020-10-28 09:20:52,499 INFO L87 Difference]: Start difference. First operand 82 states and 83 transitions. Second operand 16 states. [2020-10-28 09:20:52,892 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 09:20:52,892 INFO L93 Difference]: Finished difference Result 178 states and 190 transitions. [2020-10-28 09:20:52,893 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-10-28 09:20:52,893 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 79 [2020-10-28 09:20:52,893 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 09:20:52,894 INFO L225 Difference]: With dead ends: 178 [2020-10-28 09:20:52,894 INFO L226 Difference]: Without dead ends: 139 [2020-10-28 09:20:52,897 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 9 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 09:20:52,898 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 139 states. [2020-10-28 09:20:52,911 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 139 to 85. [2020-10-28 09:20:52,911 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 85 states. [2020-10-28 09:20:52,911 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 85 states to 85 states and 86 transitions. [2020-10-28 09:20:52,912 INFO L78 Accepts]: Start accepts. Automaton has 85 states and 86 transitions. Word has length 79 [2020-10-28 09:20:52,912 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 09:20:52,912 INFO L481 AbstractCegarLoop]: Abstraction has 85 states and 86 transitions. [2020-10-28 09:20:52,912 INFO L482 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-10-28 09:20:52,912 INFO L276 IsEmpty]: Start isEmpty. Operand 85 states and 86 transitions. [2020-10-28 09:20:52,913 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2020-10-28 09:20:52,913 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 09:20:52,913 INFO L422 BasicCegarLoop]: trace histogram [13, 13, 13, 4, 4, 4, 4, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 09:20:52,913 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2020-10-28 09:20:52,913 INFO L429 AbstractCegarLoop]: === Iteration 19 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 09:20:52,914 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 09:20:52,914 INFO L82 PathProgramCache]: Analyzing trace with hash 1379395800, now seen corresponding path program 11 times [2020-10-28 09:20:52,914 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 09:20:52,914 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1208054057] [2020-10-28 09:20:52,914 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 09:20:52,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:20:52,940 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:20:53,042 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:20:53,228 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:20:53,645 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:20:54,571 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:20:54,950 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:20:55,131 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:20:55,323 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:20:56,371 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:20:57,263 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:20:57,421 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:20:57,489 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:20:57,729 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:20:57,931 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:20:57,932 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 98 [2020-10-28 09:20:57,932 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 13 [2020-10-28 09:20:57,932 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-10-28 09:20:57,932 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:20:57,932 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:20:57,932 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-10-28 09:20:57,932 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-28 09:20:57,932 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 41 [2020-10-28 09:20:57,932 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:20:58,151 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 09:20:58,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:20:58,154 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:20:58,157 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:20:58,157 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 09:20:58,157 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:20:58,158 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 09:20:58,158 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:20:58,158 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:20:58,158 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:20:58,158 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:20:58,158 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:20:58,158 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:20:58,161 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2020-10-28 09:20:58,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:20:58,163 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:20:58,163 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:20:58,164 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 09:20:58,164 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:20:58,164 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-28 09:20:58,164 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:20:58,164 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:20:58,164 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:20:58,164 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-28 09:20:58,165 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:20:58,165 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:20:58,166 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2020-10-28 09:20:58,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:20:58,167 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:20:58,168 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:20:58,168 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 09:20:58,168 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:20:58,168 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-28 09:20:58,168 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:20:58,169 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:20:58,169 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:20:58,169 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-28 09:20:58,169 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:20:58,169 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:20:58,170 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2020-10-28 09:20:58,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:20:58,172 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:20:58,173 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:20:58,173 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 09:20:58,173 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:20:58,173 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-28 09:20:58,173 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:20:58,173 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:20:58,173 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:20:58,173 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-28 09:20:58,174 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:20:58,174 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:20:58,183 INFO L134 CoverageAnalysis]: Checked inductivity of 289 backedges. 6 proven. 247 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2020-10-28 09:20:58,183 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1208054057] [2020-10-28 09:20:58,183 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 09:20:58,184 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17] total 17 [2020-10-28 09:20:58,184 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1305683735] [2020-10-28 09:20:58,184 INFO L461 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-28 09:20:58,184 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 09:20:58,185 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-28 09:20:58,185 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=122, Invalid=150, Unknown=0, NotChecked=0, Total=272 [2020-10-28 09:20:58,185 INFO L87 Difference]: Start difference. First operand 85 states and 86 transitions. Second operand 17 states. [2020-10-28 09:20:58,649 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 09:20:58,649 INFO L93 Difference]: Finished difference Result 186 states and 199 transitions. [2020-10-28 09:20:58,650 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-10-28 09:20:58,650 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 82 [2020-10-28 09:20:58,650 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 09:20:58,652 INFO L225 Difference]: With dead ends: 186 [2020-10-28 09:20:58,652 INFO L226 Difference]: Without dead ends: 147 [2020-10-28 09:20:58,653 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 9 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 09:20:58,654 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 147 states. [2020-10-28 09:20:58,674 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 147 to 88. [2020-10-28 09:20:58,675 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 88 states. [2020-10-28 09:20:58,675 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 88 states to 88 states and 89 transitions. [2020-10-28 09:20:58,675 INFO L78 Accepts]: Start accepts. Automaton has 88 states and 89 transitions. Word has length 82 [2020-10-28 09:20:58,676 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 09:20:58,677 INFO L481 AbstractCegarLoop]: Abstraction has 88 states and 89 transitions. [2020-10-28 09:20:58,678 INFO L482 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-28 09:20:58,678 INFO L276 IsEmpty]: Start isEmpty. Operand 88 states and 89 transitions. [2020-10-28 09:20:58,678 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2020-10-28 09:20:58,678 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 09:20:58,679 INFO L422 BasicCegarLoop]: trace histogram [14, 14, 14, 4, 4, 4, 4, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 09:20:58,679 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2020-10-28 09:20:58,679 INFO L429 AbstractCegarLoop]: === Iteration 20 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 09:20:58,680 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 09:20:58,681 INFO L82 PathProgramCache]: Analyzing trace with hash 399169029, now seen corresponding path program 12 times [2020-10-28 09:20:58,681 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 09:20:58,681 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1577047827] [2020-10-28 09:20:58,681 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 09:20:58,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:20:58,707 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:20:58,835 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:20:58,904 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:20:58,998 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:21:00,119 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:21:00,567 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:21:03,399 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:21:03,700 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:21:03,700 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 101 [2020-10-28 09:21:03,700 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-28 09:21:03,700 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-10-28 09:21:03,700 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:21:03,700 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:21:03,700 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 23 [2020-10-28 09:21:03,700 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-28 09:21:03,700 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 85 [2020-10-28 09:21:03,700 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:21:04,023 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 09:21:04,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:21:04,026 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:21:04,028 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:21:04,028 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 09:21:04,028 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:21:04,028 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 09:21:04,028 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:21:04,028 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:21:04,029 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:21:04,029 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:21:04,029 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:21:04,029 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:21:04,031 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2020-10-28 09:21:04,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:21:04,033 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:21:04,035 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:21:04,036 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 09:21:04,036 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:21:04,036 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 09:21:04,036 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:21:04,036 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:21:04,036 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 09:21:04,037 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:21:04,037 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 09:21:04,037 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:21:04,038 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2020-10-28 09:21:04,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:21:04,040 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:21:04,042 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:21:04,042 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 09:21:04,043 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:21:04,043 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 09:21:04,043 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:21:04,043 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:21:04,043 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 09:21:04,043 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:21:04,043 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 09:21:04,044 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:21:04,045 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2020-10-28 09:21:04,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:21:04,049 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:21:04,051 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:21:04,051 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 09:21:04,052 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:21:04,052 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 09:21:04,052 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:21:04,052 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:21:04,052 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 09:21:04,052 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:21:04,052 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 09:21:04,053 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:21:04,077 INFO L134 CoverageAnalysis]: Checked inductivity of 329 backedges. 6 proven. 156 refuted. 0 times theorem prover too weak. 167 trivial. 0 not checked. [2020-10-28 09:21:04,077 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1577047827] [2020-10-28 09:21:04,077 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 09:21:04,077 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2020-10-28 09:21:04,078 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1630965259] [2020-10-28 09:21:04,078 INFO L461 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-28 09:21:04,078 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 09:21:04,078 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-28 09:21:04,079 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=183, Unknown=0, NotChecked=0, Total=210 [2020-10-28 09:21:04,079 INFO L87 Difference]: Start difference. First operand 88 states and 89 transitions. Second operand 15 states. [2020-10-28 09:21:05,011 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 09:21:05,011 INFO L93 Difference]: Finished difference Result 103 states and 104 transitions. [2020-10-28 09:21:05,012 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2020-10-28 09:21:05,013 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 85 [2020-10-28 09:21:05,013 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 09:21:05,013 INFO L225 Difference]: With dead ends: 103 [2020-10-28 09:21:05,013 INFO L226 Difference]: Without dead ends: 99 [2020-10-28 09:21:05,014 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 74 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=94, Invalid=662, Unknown=0, NotChecked=0, Total=756 [2020-10-28 09:21:05,015 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 99 states. [2020-10-28 09:21:05,025 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 99 to 97. [2020-10-28 09:21:05,026 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 97 states. [2020-10-28 09:21:05,026 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 97 states to 97 states and 98 transitions. [2020-10-28 09:21:05,027 INFO L78 Accepts]: Start accepts. Automaton has 97 states and 98 transitions. Word has length 85 [2020-10-28 09:21:05,027 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 09:21:05,027 INFO L481 AbstractCegarLoop]: Abstraction has 97 states and 98 transitions. [2020-10-28 09:21:05,027 INFO L482 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-28 09:21:05,027 INFO L276 IsEmpty]: Start isEmpty. Operand 97 states and 98 transitions. [2020-10-28 09:21:05,028 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2020-10-28 09:21:05,028 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 09:21:05,028 INFO L422 BasicCegarLoop]: trace histogram [14, 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 09:21:05,028 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2020-10-28 09:21:05,029 INFO L429 AbstractCegarLoop]: === Iteration 21 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 09:21:05,029 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 09:21:05,029 INFO L82 PathProgramCache]: Analyzing trace with hash 1811146455, now seen corresponding path program 13 times [2020-10-28 09:21:05,029 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 09:21:05,030 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1425952975] [2020-10-28 09:21:05,030 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 09:21:05,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:21:05,054 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:21:05,146 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:21:05,408 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:21:05,559 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:21:06,462 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:21:08,024 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:21:08,438 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:21:08,502 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:21:08,717 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:21:09,020 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:21:09,188 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:21:09,481 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:21:10,050 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:21:10,050 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 112 [2020-10-28 09:21:10,050 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 12 [2020-10-28 09:21:10,050 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5005 [2020-10-28 09:21:10,050 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:21:10,050 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:21:10,050 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 16 [2020-10-28 09:21:10,051 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-28 09:21:10,051 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 44 [2020-10-28 09:21:10,051 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:21:10,296 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 09:21:10,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:21:10,299 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:21:10,301 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:21:10,301 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 09:21:10,301 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:21:10,301 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 09:21:10,301 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:21:10,301 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:21:10,301 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:21:10,302 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:21:10,302 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:21:10,302 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:21:10,303 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2020-10-28 09:21:10,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:21:10,305 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:21:10,305 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:21:10,305 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 09:21:10,305 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:21:10,305 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-28 09:21:10,306 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:21:10,306 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:21:10,306 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:21:10,306 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-28 09:21:10,306 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:21:10,306 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:21:10,307 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2020-10-28 09:21:10,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:21:10,308 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:21:10,308 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:21:10,308 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 09:21:10,309 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:21:10,309 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-28 09:21:10,309 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:21:10,309 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:21:10,309 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:21:10,309 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-28 09:21:10,309 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:21:10,309 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:21:10,310 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2020-10-28 09:21:10,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:21:10,311 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:21:10,312 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:21:10,312 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 09:21:10,312 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:21:10,312 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-28 09:21:10,312 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:21:10,312 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:21:10,312 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:21:10,312 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-28 09:21:10,312 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:21:10,313 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:21:10,313 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2020-10-28 09:21:10,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:21:10,315 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:21:10,315 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:21:10,316 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 09:21:10,316 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:21:10,316 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-28 09:21:10,316 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:21:10,316 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:21:10,316 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:21:10,316 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-28 09:21:10,316 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:21:10,317 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:21:10,326 INFO L134 CoverageAnalysis]: Checked inductivity of 361 backedges. 8 proven. 287 refuted. 0 times theorem prover too weak. 66 trivial. 0 not checked. [2020-10-28 09:21:10,326 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1425952975] [2020-10-28 09:21:10,327 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 09:21:10,327 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18] total 18 [2020-10-28 09:21:10,327 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1979251393] [2020-10-28 09:21:10,327 INFO L461 AbstractCegarLoop]: Interpolant automaton has 18 states [2020-10-28 09:21:10,327 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 09:21:10,328 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2020-10-28 09:21:10,328 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=138, Invalid=168, Unknown=0, NotChecked=0, Total=306 [2020-10-28 09:21:10,328 INFO L87 Difference]: Start difference. First operand 97 states and 98 transitions. Second operand 18 states. [2020-10-28 09:21:10,928 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 09:21:10,928 INFO L93 Difference]: Finished difference Result 207 states and 220 transitions. [2020-10-28 09:21:10,929 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-10-28 09:21:10,930 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 94 [2020-10-28 09:21:10,930 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 09:21:10,932 INFO L225 Difference]: With dead ends: 207 [2020-10-28 09:21:10,932 INFO L226 Difference]: Without dead ends: 159 [2020-10-28 09:21:10,933 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 09:21:10,933 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 159 states. [2020-10-28 09:21:10,946 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 159 to 100. [2020-10-28 09:21:10,946 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 100 states. [2020-10-28 09:21:10,947 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 100 states to 100 states and 101 transitions. [2020-10-28 09:21:10,947 INFO L78 Accepts]: Start accepts. Automaton has 100 states and 101 transitions. Word has length 94 [2020-10-28 09:21:10,947 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 09:21:10,947 INFO L481 AbstractCegarLoop]: Abstraction has 100 states and 101 transitions. [2020-10-28 09:21:10,947 INFO L482 AbstractCegarLoop]: Interpolant automaton has 18 states. [2020-10-28 09:21:10,947 INFO L276 IsEmpty]: Start isEmpty. Operand 100 states and 101 transitions. [2020-10-28 09:21:10,948 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2020-10-28 09:21:10,948 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 09:21:10,949 INFO L422 BasicCegarLoop]: trace histogram [15, 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 09:21:10,949 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2020-10-28 09:21:10,949 INFO L429 AbstractCegarLoop]: === Iteration 22 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 09:21:10,949 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 09:21:10,950 INFO L82 PathProgramCache]: Analyzing trace with hash -1600948092, now seen corresponding path program 14 times [2020-10-28 09:21:10,950 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 09:21:10,950 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1925674372] [2020-10-28 09:21:10,950 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 09:21:10,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:21:10,976 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:21:11,039 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:21:11,818 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:21:11,935 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:21:12,423 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:21:12,703 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:21:13,045 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:21:13,588 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:21:14,007 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:21:14,233 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:21:14,612 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:21:14,722 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:21:14,927 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:21:15,966 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:21:15,966 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 115 [2020-10-28 09:21:15,966 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 13 [2020-10-28 09:21:15,966 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-10-28 09:21:15,966 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:21:15,966 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:21:15,966 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 17 [2020-10-28 09:21:15,966 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-28 09:21:15,967 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 47 [2020-10-28 09:21:15,967 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:21:16,231 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 09:21:16,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:21:16,234 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:21:16,236 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:21:16,236 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 09:21:16,236 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:21:16,236 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 09:21:16,236 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:21:16,236 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:21:16,236 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:21:16,236 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:21:16,236 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:21:16,236 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:21:16,238 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2020-10-28 09:21:16,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:21:16,239 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:21:16,240 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:21:16,240 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 09:21:16,240 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:21:16,240 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-28 09:21:16,240 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:21:16,240 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:21:16,241 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:21:16,241 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-28 09:21:16,241 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:21:16,241 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:21:16,242 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2020-10-28 09:21:16,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:21:16,246 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:21:16,247 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:21:16,247 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 09:21:16,247 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:21:16,248 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-28 09:21:16,248 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:21:16,248 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:21:16,248 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:21:16,248 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-28 09:21:16,248 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:21:16,248 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:21:16,250 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2020-10-28 09:21:16,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:21:16,251 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:21:16,252 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:21:16,252 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 09:21:16,252 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:21:16,252 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-28 09:21:16,253 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:21:16,253 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:21:16,253 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:21:16,253 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-28 09:21:16,253 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:21:16,253 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:21:16,254 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2020-10-28 09:21:16,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:21:16,256 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:21:16,256 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:21:16,256 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 09:21:16,257 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:21:16,257 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-28 09:21:16,257 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:21:16,257 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:21:16,257 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:21:16,257 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-28 09:21:16,257 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:21:16,257 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:21:16,268 INFO L134 CoverageAnalysis]: Checked inductivity of 404 backedges. 8 proven. 330 refuted. 0 times theorem prover too weak. 66 trivial. 0 not checked. [2020-10-28 09:21:16,268 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1925674372] [2020-10-28 09:21:16,268 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 09:21:16,269 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19] total 19 [2020-10-28 09:21:16,269 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [784953380] [2020-10-28 09:21:16,269 INFO L461 AbstractCegarLoop]: Interpolant automaton has 19 states [2020-10-28 09:21:16,269 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 09:21:16,270 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2020-10-28 09:21:16,270 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=155, Invalid=187, Unknown=0, NotChecked=0, Total=342 [2020-10-28 09:21:16,270 INFO L87 Difference]: Start difference. First operand 100 states and 101 transitions. Second operand 19 states. [2020-10-28 09:21:16,913 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 09:21:16,914 INFO L93 Difference]: Finished difference Result 215 states and 229 transitions. [2020-10-28 09:21:16,915 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2020-10-28 09:21:16,916 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 97 [2020-10-28 09:21:16,916 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 09:21:16,917 INFO L225 Difference]: With dead ends: 215 [2020-10-28 09:21:16,917 INFO L226 Difference]: Without dead ends: 167 [2020-10-28 09:21:16,918 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 09:21:16,919 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 167 states. [2020-10-28 09:21:16,931 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 167 to 103. [2020-10-28 09:21:16,931 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 103 states. [2020-10-28 09:21:16,932 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 103 states to 103 states and 104 transitions. [2020-10-28 09:21:16,932 INFO L78 Accepts]: Start accepts. Automaton has 103 states and 104 transitions. Word has length 97 [2020-10-28 09:21:16,933 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 09:21:16,933 INFO L481 AbstractCegarLoop]: Abstraction has 103 states and 104 transitions. [2020-10-28 09:21:16,933 INFO L482 AbstractCegarLoop]: Interpolant automaton has 19 states. [2020-10-28 09:21:16,933 INFO L276 IsEmpty]: Start isEmpty. Operand 103 states and 104 transitions. [2020-10-28 09:21:16,938 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2020-10-28 09:21:16,938 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 09:21:16,938 INFO L422 BasicCegarLoop]: trace histogram [16, 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 09:21:16,938 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2020-10-28 09:21:16,938 INFO L429 AbstractCegarLoop]: === Iteration 23 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 09:21:16,939 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 09:21:16,942 INFO L82 PathProgramCache]: Analyzing trace with hash 1976363959, now seen corresponding path program 15 times [2020-10-28 09:21:16,942 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 09:21:16,942 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1150243928] [2020-10-28 09:21:16,943 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 09:21:16,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:21:16,977 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:21:17,116 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:21:17,207 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:21:17,469 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:21:18,162 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:21:18,617 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:21:19,101 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:21:19,431 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:21:19,743 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:21:21,966 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:21:21,967 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 118 [2020-10-28 09:21:21,967 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-10-28 09:21:21,967 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-10-28 09:21:21,967 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:21:21,967 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:21:21,967 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 26 [2020-10-28 09:21:21,967 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-28 09:21:21,967 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 102 [2020-10-28 09:21:21,967 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:21:22,321 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 09:21:22,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:21:22,324 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:21:22,327 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:21:22,327 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 09:21:22,327 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:21:22,328 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 09:21:22,328 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:21:22,328 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:21:22,328 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:21:22,328 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:21:22,328 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:21:22,328 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:21:22,331 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2020-10-28 09:21:22,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:21:22,333 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:21:22,335 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:21:22,335 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 09:21:22,336 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:21:22,336 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 09:21:22,336 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:21:22,336 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:21:22,336 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 09:21:22,336 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:21:22,336 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 09:21:22,336 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:21:22,338 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2020-10-28 09:21:22,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:21:22,340 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:21:22,342 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:21:22,342 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 09:21:22,342 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:21:22,343 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 09:21:22,343 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:21:22,343 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:21:22,343 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 09:21:22,343 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:21:22,343 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 09:21:22,343 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:21:22,345 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2020-10-28 09:21:22,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:21:22,347 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:21:22,349 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:21:22,350 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 09:21:22,350 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:21:22,350 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 09:21:22,350 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:21:22,350 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:21:22,350 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 09:21:22,350 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:21:22,351 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 09:21:22,351 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:21:22,352 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2020-10-28 09:21:22,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:21:22,355 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:21:22,357 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:21:22,357 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 09:21:22,357 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:21:22,357 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 09:21:22,357 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:21:22,358 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:21:22,358 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 09:21:22,358 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:21:22,358 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 09:21:22,358 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:21:22,383 INFO L134 CoverageAnalysis]: Checked inductivity of 450 backedges. 8 proven. 231 refuted. 0 times theorem prover too weak. 211 trivial. 0 not checked. [2020-10-28 09:21:22,383 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1150243928] [2020-10-28 09:21:22,384 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 09:21:22,384 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17] total 17 [2020-10-28 09:21:22,384 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1431958794] [2020-10-28 09:21:22,384 INFO L461 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-28 09:21:22,385 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 09:21:22,385 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-28 09:21:22,385 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2020-10-28 09:21:22,386 INFO L87 Difference]: Start difference. First operand 103 states and 104 transitions. Second operand 17 states. [2020-10-28 09:21:23,623 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 09:21:23,623 INFO L93 Difference]: Finished difference Result 118 states and 119 transitions. [2020-10-28 09:21:23,625 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2020-10-28 09:21:23,625 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 100 [2020-10-28 09:21:23,626 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 09:21:23,627 INFO L225 Difference]: With dead ends: 118 [2020-10-28 09:21:23,627 INFO L226 Difference]: Without dead ends: 114 [2020-10-28 09:21:23,628 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 114 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=114, Invalid=942, Unknown=0, NotChecked=0, Total=1056 [2020-10-28 09:21:23,628 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 114 states. [2020-10-28 09:21:23,642 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 114 to 112. [2020-10-28 09:21:23,643 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 112 states. [2020-10-28 09:21:23,646 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 112 states to 112 states and 113 transitions. [2020-10-28 09:21:23,646 INFO L78 Accepts]: Start accepts. Automaton has 112 states and 113 transitions. Word has length 100 [2020-10-28 09:21:23,647 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 09:21:23,647 INFO L481 AbstractCegarLoop]: Abstraction has 112 states and 113 transitions. [2020-10-28 09:21:23,647 INFO L482 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-28 09:21:23,647 INFO L276 IsEmpty]: Start isEmpty. Operand 112 states and 113 transitions. [2020-10-28 09:21:23,648 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2020-10-28 09:21:23,648 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 09:21:23,648 INFO L422 BasicCegarLoop]: trace histogram [16, 16, 16, 6, 6, 6, 6, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 09:21:23,648 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2020-10-28 09:21:23,649 INFO L429 AbstractCegarLoop]: === Iteration 24 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 09:21:23,649 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 09:21:23,649 INFO L82 PathProgramCache]: Analyzing trace with hash -1853220507, now seen corresponding path program 16 times [2020-10-28 09:21:23,649 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 09:21:23,649 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [194224450] [2020-10-28 09:21:23,650 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 09:21:23,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:21:23,681 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:21:23,734 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:21:23,954 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:21:24,207 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:21:24,457 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:21:27,470 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:21:28,624 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:21:28,675 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:21:28,675 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 129 [2020-10-28 09:21:28,675 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-28 09:21:28,675 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5006 [2020-10-28 09:21:28,675 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:21:28,675 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:21:28,675 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 18 [2020-10-28 09:21:28,675 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-28 09:21:28,676 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 50 [2020-10-28 09:21:28,676 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:21:28,985 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 09:21:28,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:21:28,988 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:21:28,989 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:21:28,990 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 09:21:28,990 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:21:28,990 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 09:21:28,990 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:21:28,990 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:21:28,990 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:21:28,990 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:21:28,990 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:21:28,990 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:21:28,992 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2020-10-28 09:21:28,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:21:28,993 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:21:28,994 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:21:28,994 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 09:21:28,994 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:21:28,994 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-28 09:21:28,994 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:21:28,995 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:21:28,995 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:21:28,995 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-28 09:21:28,995 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:21:28,995 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:21:28,996 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2020-10-28 09:21:28,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:21:28,997 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:21:28,998 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:21:28,998 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 09:21:28,998 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:21:28,999 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-28 09:21:28,999 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:21:28,999 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:21:28,999 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:21:28,999 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-28 09:21:28,999 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:21:28,999 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:21:29,000 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2020-10-28 09:21:29,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:21:29,002 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:21:29,002 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:21:29,002 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 09:21:29,002 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:21:29,003 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-28 09:21:29,003 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:21:29,003 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:21:29,003 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:21:29,003 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-28 09:21:29,003 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:21:29,003 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:21:29,004 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2020-10-28 09:21:29,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:21:29,005 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:21:29,006 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:21:29,006 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 09:21:29,006 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:21:29,006 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-28 09:21:29,006 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:21:29,007 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:21:29,007 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:21:29,007 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-28 09:21:29,007 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:21:29,007 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:21:29,007 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2020-10-28 09:21:29,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:21:29,009 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:21:29,009 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:21:29,010 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 09:21:29,010 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:21:29,010 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-28 09:21:29,010 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:21:29,010 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:21:29,010 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:21:29,010 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-28 09:21:29,010 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:21:29,010 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:21:29,018 INFO L134 CoverageAnalysis]: Checked inductivity of 491 backedges. 10 proven. 376 refuted. 0 times theorem prover too weak. 105 trivial. 0 not checked. [2020-10-28 09:21:29,019 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [194224450] [2020-10-28 09:21:29,019 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 09:21:29,019 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20] total 20 [2020-10-28 09:21:29,019 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1660434378] [2020-10-28 09:21:29,019 INFO L461 AbstractCegarLoop]: Interpolant automaton has 20 states [2020-10-28 09:21:29,020 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 09:21:29,020 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2020-10-28 09:21:29,020 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=173, Invalid=207, Unknown=0, NotChecked=0, Total=380 [2020-10-28 09:21:29,020 INFO L87 Difference]: Start difference. First operand 112 states and 113 transitions. Second operand 20 states. [2020-10-28 09:21:29,657 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 09:21:29,657 INFO L93 Difference]: Finished difference Result 236 states and 250 transitions. [2020-10-28 09:21:29,658 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-10-28 09:21:29,658 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 109 [2020-10-28 09:21:29,658 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 09:21:29,660 INFO L225 Difference]: With dead ends: 236 [2020-10-28 09:21:29,660 INFO L226 Difference]: Without dead ends: 179 [2020-10-28 09:21:29,661 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 13 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 09:21:29,662 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 179 states. [2020-10-28 09:21:29,688 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 179 to 115. [2020-10-28 09:21:29,688 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 115 states. [2020-10-28 09:21:29,689 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 115 states to 115 states and 116 transitions. [2020-10-28 09:21:29,689 INFO L78 Accepts]: Start accepts. Automaton has 115 states and 116 transitions. Word has length 109 [2020-10-28 09:21:29,690 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 09:21:29,690 INFO L481 AbstractCegarLoop]: Abstraction has 115 states and 116 transitions. [2020-10-28 09:21:29,690 INFO L482 AbstractCegarLoop]: Interpolant automaton has 20 states. [2020-10-28 09:21:29,690 INFO L276 IsEmpty]: Start isEmpty. Operand 115 states and 116 transitions. [2020-10-28 09:21:29,693 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2020-10-28 09:21:29,693 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 09:21:29,693 INFO L422 BasicCegarLoop]: trace histogram [17, 17, 17, 6, 6, 6, 6, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 09:21:29,694 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2020-10-28 09:21:29,694 INFO L429 AbstractCegarLoop]: === Iteration 25 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 09:21:29,694 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 09:21:29,694 INFO L82 PathProgramCache]: Analyzing trace with hash -1186375656, now seen corresponding path program 17 times [2020-10-28 09:21:29,694 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 09:21:29,695 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [443409407] [2020-10-28 09:21:29,695 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 09:21:29,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:21:29,738 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:21:29,806 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:21:30,103 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:21:30,346 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:21:30,622 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:21:32,163 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:21:33,366 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:21:34,729 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:21:34,729 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 132 [2020-10-28 09:21:34,729 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-28 09:21:34,729 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5004 [2020-10-28 09:21:34,729 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:21:34,729 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:21:34,730 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 19 [2020-10-28 09:21:34,730 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-28 09:21:34,730 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 53 [2020-10-28 09:21:34,730 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:21:35,064 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 09:21:35,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:21:35,068 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:21:35,070 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:21:35,070 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 09:21:35,070 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:21:35,070 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 09:21:35,070 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:21:35,071 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:21:35,071 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:21:35,071 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:21:35,071 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:21:35,071 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:21:35,073 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2020-10-28 09:21:35,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:21:35,074 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:21:35,074 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:21:35,075 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 09:21:35,075 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:21:35,075 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-28 09:21:35,075 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:21:35,075 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:21:35,075 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:21:35,075 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-28 09:21:35,075 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:21:35,075 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:21:35,076 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2020-10-28 09:21:35,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:21:35,077 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:21:35,077 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:21:35,078 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 09:21:35,078 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:21:35,078 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-28 09:21:35,078 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:21:35,078 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:21:35,078 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:21:35,078 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-28 09:21:35,078 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:21:35,078 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:21:35,079 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2020-10-28 09:21:35,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:21:35,080 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:21:35,080 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:21:35,080 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 09:21:35,080 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:21:35,081 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-28 09:21:35,081 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:21:35,081 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:21:35,081 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:21:35,081 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-28 09:21:35,081 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:21:35,081 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:21:35,082 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2020-10-28 09:21:35,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:21:35,082 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:21:35,083 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:21:35,083 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 09:21:35,083 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:21:35,083 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-28 09:21:35,083 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:21:35,083 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:21:35,083 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:21:35,084 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-28 09:21:35,084 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:21:35,084 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:21:35,084 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2020-10-28 09:21:35,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:21:35,085 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:21:35,086 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:21:35,086 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 09:21:35,086 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:21:35,086 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-28 09:21:35,086 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:21:35,086 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:21:35,086 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:21:35,086 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-28 09:21:35,086 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:21:35,086 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:21:35,095 INFO L134 CoverageAnalysis]: Checked inductivity of 540 backedges. 10 proven. 425 refuted. 0 times theorem prover too weak. 105 trivial. 0 not checked. [2020-10-28 09:21:35,095 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [443409407] [2020-10-28 09:21:35,096 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 09:21:35,096 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21] total 21 [2020-10-28 09:21:35,096 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1069612201] [2020-10-28 09:21:35,096 INFO L461 AbstractCegarLoop]: Interpolant automaton has 21 states [2020-10-28 09:21:35,096 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 09:21:35,097 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2020-10-28 09:21:35,097 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=192, Invalid=228, Unknown=0, NotChecked=0, Total=420 [2020-10-28 09:21:35,097 INFO L87 Difference]: Start difference. First operand 115 states and 116 transitions. Second operand 21 states. [2020-10-28 09:21:35,628 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 09:21:35,628 INFO L93 Difference]: Finished difference Result 244 states and 259 transitions. [2020-10-28 09:21:35,629 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2020-10-28 09:21:35,629 INFO L78 Accepts]: Start accepts. Automaton has 21 states. Word has length 112 [2020-10-28 09:21:35,629 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 09:21:35,630 INFO L225 Difference]: With dead ends: 244 [2020-10-28 09:21:35,631 INFO L226 Difference]: Without dead ends: 187 [2020-10-28 09:21:35,632 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 13 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 09:21:35,633 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 187 states. [2020-10-28 09:21:35,653 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 187 to 118. [2020-10-28 09:21:35,653 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 118 states. [2020-10-28 09:21:35,654 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 118 states to 118 states and 119 transitions. [2020-10-28 09:21:35,655 INFO L78 Accepts]: Start accepts. Automaton has 118 states and 119 transitions. Word has length 112 [2020-10-28 09:21:35,655 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 09:21:35,655 INFO L481 AbstractCegarLoop]: Abstraction has 118 states and 119 transitions. [2020-10-28 09:21:35,656 INFO L482 AbstractCegarLoop]: Interpolant automaton has 21 states. [2020-10-28 09:21:35,656 INFO L276 IsEmpty]: Start isEmpty. Operand 118 states and 119 transitions. [2020-10-28 09:21:35,657 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2020-10-28 09:21:35,657 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 09:21:35,657 INFO L422 BasicCegarLoop]: trace histogram [18, 18, 18, 6, 6, 6, 6, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 09:21:35,657 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2020-10-28 09:21:35,657 INFO L429 AbstractCegarLoop]: === Iteration 26 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 09:21:35,657 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 09:21:35,658 INFO L82 PathProgramCache]: Analyzing trace with hash 564836485, now seen corresponding path program 18 times [2020-10-28 09:21:35,658 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 09:21:35,658 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [330075984] [2020-10-28 09:21:35,658 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 09:21:35,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:21:35,690 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:21:35,977 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:21:36,383 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:21:36,686 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:21:37,139 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:21:38,807 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:21:40,687 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:21:40,687 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 135 [2020-10-28 09:21:40,687 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-28 09:21:40,687 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5009 [2020-10-28 09:21:40,688 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:21:40,688 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:21:40,688 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 20 [2020-10-28 09:21:40,688 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-28 09:21:40,688 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 56 [2020-10-28 09:21:40,688 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:21:41,048 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 09:21:41,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:21:41,051 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:21:41,053 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:21:41,054 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 09:21:41,054 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:21:41,054 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 09:21:41,054 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:21:41,054 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:21:41,054 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:21:41,054 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:21:41,054 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:21:41,054 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:21:41,056 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2020-10-28 09:21:41,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:21:41,057 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:21:41,058 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:21:41,058 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 09:21:41,058 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:21:41,058 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-28 09:21:41,058 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:21:41,058 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:21:41,059 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:21:41,059 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-28 09:21:41,059 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:21:41,059 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:21:41,060 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2020-10-28 09:21:41,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:21:41,061 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:21:41,062 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:21:41,062 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 09:21:41,062 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:21:41,062 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-28 09:21:41,062 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:21:41,062 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:21:41,063 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:21:41,063 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-28 09:21:41,063 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:21:41,063 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:21:41,064 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2020-10-28 09:21:41,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:21:41,065 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:21:41,066 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:21:41,066 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 09:21:41,066 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:21:41,066 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-28 09:21:41,066 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:21:41,066 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:21:41,067 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:21:41,067 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-28 09:21:41,067 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:21:41,067 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:21:41,068 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2020-10-28 09:21:41,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:21:41,069 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:21:41,070 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:21:41,070 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 09:21:41,070 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:21:41,070 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-28 09:21:41,070 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:21:41,071 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:21:41,071 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:21:41,071 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-28 09:21:41,071 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:21:41,071 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:21:41,072 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2020-10-28 09:21:41,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:21:41,073 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:21:41,074 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:21:41,074 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 09:21:41,074 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:21:41,075 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-28 09:21:41,075 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:21:41,075 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:21:41,075 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:21:41,075 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-28 09:21:41,075 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:21:41,075 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:21:41,096 INFO L134 CoverageAnalysis]: Checked inductivity of 592 backedges. 10 proven. 477 refuted. 0 times theorem prover too weak. 105 trivial. 0 not checked. [2020-10-28 09:21:41,096 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [330075984] [2020-10-28 09:21:41,096 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 09:21:41,096 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22] total 22 [2020-10-28 09:21:41,096 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1178675726] [2020-10-28 09:21:41,097 INFO L461 AbstractCegarLoop]: Interpolant automaton has 22 states [2020-10-28 09:21:41,097 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 09:21:41,097 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2020-10-28 09:21:41,098 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=212, Invalid=250, Unknown=0, NotChecked=0, Total=462 [2020-10-28 09:21:41,098 INFO L87 Difference]: Start difference. First operand 118 states and 119 transitions. Second operand 22 states. [2020-10-28 09:21:41,730 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 09:21:41,731 INFO L93 Difference]: Finished difference Result 252 states and 268 transitions. [2020-10-28 09:21:41,731 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2020-10-28 09:21:41,732 INFO L78 Accepts]: Start accepts. Automaton has 22 states. Word has length 115 [2020-10-28 09:21:41,732 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 09:21:41,734 INFO L225 Difference]: With dead ends: 252 [2020-10-28 09:21:41,734 INFO L226 Difference]: Without dead ends: 195 [2020-10-28 09:21:41,735 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 13 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 09:21:41,736 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 195 states. [2020-10-28 09:21:41,750 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 195 to 121. [2020-10-28 09:21:41,750 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 121 states. [2020-10-28 09:21:41,751 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 121 states to 121 states and 122 transitions. [2020-10-28 09:21:41,751 INFO L78 Accepts]: Start accepts. Automaton has 121 states and 122 transitions. Word has length 115 [2020-10-28 09:21:41,751 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 09:21:41,751 INFO L481 AbstractCegarLoop]: Abstraction has 121 states and 122 transitions. [2020-10-28 09:21:41,752 INFO L482 AbstractCegarLoop]: Interpolant automaton has 22 states. [2020-10-28 09:21:41,752 INFO L276 IsEmpty]: Start isEmpty. Operand 121 states and 122 transitions. [2020-10-28 09:21:41,753 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2020-10-28 09:21:41,753 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 09:21:41,753 INFO L422 BasicCegarLoop]: trace histogram [19, 19, 19, 6, 6, 6, 6, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 09:21:41,753 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2020-10-28 09:21:41,753 INFO L429 AbstractCegarLoop]: === Iteration 27 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 09:21:41,754 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 09:21:41,754 INFO L82 PathProgramCache]: Analyzing trace with hash -42015496, now seen corresponding path program 19 times [2020-10-28 09:21:41,754 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 09:21:41,754 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [952455211] [2020-10-28 09:21:41,754 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 09:21:41,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:21:41,790 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:21:41,951 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:21:42,503 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:21:42,767 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:21:43,334 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:21:45,344 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:21:45,457 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:21:46,052 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:21:46,794 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:21:46,794 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 138 [2020-10-28 09:21:46,794 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-10-28 09:21:46,794 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5019 [2020-10-28 09:21:46,795 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:21:46,795 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:21:46,795 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 21 [2020-10-28 09:21:46,795 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-28 09:21:46,795 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 59 [2020-10-28 09:21:46,795 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:21:47,185 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 09:21:47,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:21:47,188 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:21:47,191 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:21:47,191 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 09:21:47,191 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:21:47,191 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 09:21:47,192 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:21:47,192 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:21:47,192 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:21:47,192 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:21:47,192 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:21:47,192 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:21:47,194 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2020-10-28 09:21:47,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:21:47,195 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:21:47,195 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:21:47,195 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 09:21:47,195 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:21:47,196 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-28 09:21:47,196 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:21:47,196 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:21:47,196 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:21:47,196 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-28 09:21:47,196 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:21:47,196 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:21:47,197 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2020-10-28 09:21:47,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:21:47,198 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:21:47,198 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:21:47,198 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 09:21:47,199 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:21:47,199 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-28 09:21:47,199 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:21:47,199 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:21:47,199 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:21:47,199 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-28 09:21:47,199 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:21:47,199 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:21:47,200 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2020-10-28 09:21:47,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:21:47,202 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:21:47,202 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:21:47,203 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 09:21:47,203 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:21:47,203 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-28 09:21:47,203 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:21:47,203 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:21:47,203 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:21:47,203 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-28 09:21:47,203 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:21:47,204 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:21:47,204 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2020-10-28 09:21:47,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:21:47,206 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:21:47,207 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:21:47,207 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 09:21:47,207 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:21:47,207 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-28 09:21:47,207 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:21:47,208 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:21:47,208 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:21:47,208 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-28 09:21:47,208 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:21:47,208 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:21:47,209 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2020-10-28 09:21:47,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:21:47,210 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:21:47,210 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:21:47,210 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 09:21:47,211 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:21:47,211 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-28 09:21:47,211 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:21:47,211 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:21:47,211 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:21:47,211 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-28 09:21:47,211 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:21:47,211 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:21:47,222 INFO L134 CoverageAnalysis]: Checked inductivity of 647 backedges. 10 proven. 532 refuted. 0 times theorem prover too weak. 105 trivial. 0 not checked. [2020-10-28 09:21:47,223 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [952455211] [2020-10-28 09:21:47,223 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 09:21:47,223 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23] total 23 [2020-10-28 09:21:47,223 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [180201638] [2020-10-28 09:21:47,223 INFO L461 AbstractCegarLoop]: Interpolant automaton has 23 states [2020-10-28 09:21:47,224 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 09:21:47,224 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2020-10-28 09:21:47,224 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=233, Invalid=273, Unknown=0, NotChecked=0, Total=506 [2020-10-28 09:21:47,224 INFO L87 Difference]: Start difference. First operand 121 states and 122 transitions. Second operand 23 states. [2020-10-28 09:21:47,952 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 09:21:47,953 INFO L93 Difference]: Finished difference Result 260 states and 277 transitions. [2020-10-28 09:21:47,953 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2020-10-28 09:21:47,953 INFO L78 Accepts]: Start accepts. Automaton has 23 states. Word has length 118 [2020-10-28 09:21:47,954 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 09:21:47,956 INFO L225 Difference]: With dead ends: 260 [2020-10-28 09:21:47,956 INFO L226 Difference]: Without dead ends: 203 [2020-10-28 09:21:47,957 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=256, Invalid=296, Unknown=0, NotChecked=0, Total=552 [2020-10-28 09:21:47,958 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 203 states. [2020-10-28 09:21:47,971 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 203 to 124. [2020-10-28 09:21:47,972 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 124 states. [2020-10-28 09:21:47,972 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 124 states to 124 states and 125 transitions. [2020-10-28 09:21:47,973 INFO L78 Accepts]: Start accepts. Automaton has 124 states and 125 transitions. Word has length 118 [2020-10-28 09:21:47,973 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 09:21:47,973 INFO L481 AbstractCegarLoop]: Abstraction has 124 states and 125 transitions. [2020-10-28 09:21:47,973 INFO L482 AbstractCegarLoop]: Interpolant automaton has 23 states. [2020-10-28 09:21:47,973 INFO L276 IsEmpty]: Start isEmpty. Operand 124 states and 125 transitions. [2020-10-28 09:21:47,974 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2020-10-28 09:21:47,974 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 09:21:47,975 INFO L422 BasicCegarLoop]: trace histogram [20, 20, 20, 6, 6, 6, 6, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 09:21:47,975 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2020-10-28 09:21:47,975 INFO L429 AbstractCegarLoop]: === Iteration 28 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 09:21:47,975 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 09:21:47,976 INFO L82 PathProgramCache]: Analyzing trace with hash -1252032603, now seen corresponding path program 20 times [2020-10-28 09:21:47,976 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 09:21:47,976 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [810622747] [2020-10-28 09:21:47,976 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 09:21:47,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:21:48,011 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:21:48,069 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:21:48,403 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:21:48,690 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:21:52,998 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:21:52,998 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 141 [2020-10-28 09:21:52,999 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-28 09:21:52,999 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-10-28 09:21:52,999 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:21:52,999 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:21:52,999 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 22 [2020-10-28 09:21:52,999 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-28 09:21:52,999 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 62 [2020-10-28 09:21:52,999 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:21:53,422 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 09:21:53,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:21:53,425 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:21:53,427 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:21:53,427 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 09:21:53,427 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:21:53,427 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 09:21:53,427 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:21:53,427 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:21:53,427 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:21:53,427 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:21:53,427 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:21:53,428 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:21:53,429 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2020-10-28 09:21:53,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:21:53,430 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:21:53,431 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:21:53,431 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 09:21:53,431 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:21:53,431 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-28 09:21:53,431 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:21:53,431 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:21:53,431 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:21:53,432 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-28 09:21:53,432 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:21:53,432 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:21:53,433 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2020-10-28 09:21:53,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:21:53,434 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:21:53,434 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:21:53,434 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 09:21:53,435 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:21:53,435 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-28 09:21:53,435 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:21:53,435 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:21:53,435 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:21:53,435 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-28 09:21:53,435 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:21:53,435 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:21:53,436 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2020-10-28 09:21:53,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:21:53,438 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:21:53,438 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:21:53,439 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 09:21:53,439 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:21:53,439 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-28 09:21:53,439 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:21:53,439 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:21:53,439 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:21:53,439 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-28 09:21:53,439 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:21:53,439 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:21:53,440 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2020-10-28 09:21:53,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:21:53,442 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:21:53,442 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:21:53,443 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 09:21:53,443 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:21:53,443 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-28 09:21:53,443 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:21:53,443 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:21:53,443 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:21:53,443 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-28 09:21:53,444 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:21:53,444 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:21:53,445 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2020-10-28 09:21:53,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:21:53,446 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:21:53,447 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:21:53,447 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 09:21:53,447 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:21:53,447 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-28 09:21:53,447 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:21:53,447 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:21:53,447 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:21:53,448 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-28 09:21:53,448 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:21:53,448 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:21:53,468 INFO L134 CoverageAnalysis]: Checked inductivity of 705 backedges. 10 proven. 590 refuted. 0 times theorem prover too weak. 105 trivial. 0 not checked. [2020-10-28 09:21:53,469 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [810622747] [2020-10-28 09:21:53,469 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 09:21:53,469 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24] total 24 [2020-10-28 09:21:53,469 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [881760038] [2020-10-28 09:21:53,470 INFO L461 AbstractCegarLoop]: Interpolant automaton has 24 states [2020-10-28 09:21:53,470 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 09:21:53,470 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2020-10-28 09:21:53,470 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=255, Invalid=297, Unknown=0, NotChecked=0, Total=552 [2020-10-28 09:21:53,471 INFO L87 Difference]: Start difference. First operand 124 states and 125 transitions. Second operand 24 states. [2020-10-28 09:21:54,169 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 09:21:54,169 INFO L93 Difference]: Finished difference Result 268 states and 286 transitions. [2020-10-28 09:21:54,170 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2020-10-28 09:21:54,170 INFO L78 Accepts]: Start accepts. Automaton has 24 states. Word has length 121 [2020-10-28 09:21:54,170 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 09:21:54,172 INFO L225 Difference]: With dead ends: 268 [2020-10-28 09:21:54,172 INFO L226 Difference]: Without dead ends: 211 [2020-10-28 09:21:54,173 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 13 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 09:21:54,174 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 211 states. [2020-10-28 09:21:54,187 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 211 to 127. [2020-10-28 09:21:54,187 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 127 states. [2020-10-28 09:21:54,188 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 127 states to 127 states and 128 transitions. [2020-10-28 09:21:54,188 INFO L78 Accepts]: Start accepts. Automaton has 127 states and 128 transitions. Word has length 121 [2020-10-28 09:21:54,189 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 09:21:54,189 INFO L481 AbstractCegarLoop]: Abstraction has 127 states and 128 transitions. [2020-10-28 09:21:54,189 INFO L482 AbstractCegarLoop]: Interpolant automaton has 24 states. [2020-10-28 09:21:54,189 INFO L276 IsEmpty]: Start isEmpty. Operand 127 states and 128 transitions. [2020-10-28 09:21:54,190 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2020-10-28 09:21:54,190 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 09:21:54,190 INFO L422 BasicCegarLoop]: trace histogram [21, 21, 21, 6, 6, 6, 6, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 09:21:54,190 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2020-10-28 09:21:54,190 INFO L429 AbstractCegarLoop]: === Iteration 29 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 09:21:54,191 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 09:21:54,191 INFO L82 PathProgramCache]: Analyzing trace with hash -1211151912, now seen corresponding path program 21 times [2020-10-28 09:21:54,191 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 09:21:54,191 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [442302100] [2020-10-28 09:21:54,191 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 09:21:54,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:21:54,222 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:21:54,329 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:21:54,811 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:21:55,826 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:21:56,110 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:21:57,794 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:21:58,429 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:21:59,218 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:21:59,219 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 144 [2020-10-28 09:21:59,219 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-28 09:21:59,219 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5008 [2020-10-28 09:21:59,219 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:21:59,219 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:21:59,219 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 23 [2020-10-28 09:21:59,219 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-28 09:21:59,219 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 65 [2020-10-28 09:21:59,220 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:21:59,688 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 09:21:59,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:21:59,691 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:21:59,693 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:21:59,693 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 09:21:59,693 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:21:59,693 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 09:21:59,693 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:21:59,693 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:21:59,694 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:21:59,694 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:21:59,694 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:21:59,694 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:21:59,695 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2020-10-28 09:21:59,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:21:59,697 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:21:59,697 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:21:59,698 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 09:21:59,698 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:21:59,698 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-28 09:21:59,698 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:21:59,698 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:21:59,698 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:21:59,698 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-28 09:21:59,698 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:21:59,698 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:21:59,699 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2020-10-28 09:21:59,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:21:59,701 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:21:59,701 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:21:59,701 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 09:21:59,702 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:21:59,702 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-28 09:21:59,702 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:21:59,702 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:21:59,702 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:21:59,702 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-28 09:21:59,702 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:21:59,702 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:21:59,703 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2020-10-28 09:21:59,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:21:59,705 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:21:59,705 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:21:59,706 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 09:21:59,706 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:21:59,706 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-28 09:21:59,706 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:21:59,706 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:21:59,706 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:21:59,706 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-28 09:21:59,706 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:21:59,707 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:21:59,707 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2020-10-28 09:21:59,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:21:59,709 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:21:59,710 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:21:59,710 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 09:21:59,710 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:21:59,710 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-28 09:21:59,710 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:21:59,710 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:21:59,710 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:21:59,710 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-28 09:21:59,711 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:21:59,711 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:21:59,712 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2020-10-28 09:21:59,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:21:59,713 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:21:59,714 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:21:59,714 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 09:21:59,714 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:21:59,714 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-28 09:21:59,715 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:21:59,715 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:21:59,715 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:21:59,715 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-28 09:21:59,715 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:21:59,715 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:21:59,741 INFO L134 CoverageAnalysis]: Checked inductivity of 766 backedges. 10 proven. 651 refuted. 0 times theorem prover too weak. 105 trivial. 0 not checked. [2020-10-28 09:21:59,742 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [442302100] [2020-10-28 09:21:59,742 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 09:21:59,742 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25] total 25 [2020-10-28 09:21:59,742 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1115263816] [2020-10-28 09:21:59,743 INFO L461 AbstractCegarLoop]: Interpolant automaton has 25 states [2020-10-28 09:21:59,743 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 09:21:59,743 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2020-10-28 09:21:59,744 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=278, Invalid=322, Unknown=0, NotChecked=0, Total=600 [2020-10-28 09:21:59,744 INFO L87 Difference]: Start difference. First operand 127 states and 128 transitions. Second operand 25 states. [2020-10-28 09:22:00,604 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 09:22:00,604 INFO L93 Difference]: Finished difference Result 276 states and 295 transitions. [2020-10-28 09:22:00,605 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2020-10-28 09:22:00,605 INFO L78 Accepts]: Start accepts. Automaton has 25 states. Word has length 124 [2020-10-28 09:22:00,605 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 09:22:00,606 INFO L225 Difference]: With dead ends: 276 [2020-10-28 09:22:00,606 INFO L226 Difference]: Without dead ends: 219 [2020-10-28 09:22:00,607 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 13 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 09:22:00,608 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 219 states. [2020-10-28 09:22:00,623 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 219 to 130. [2020-10-28 09:22:00,623 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 130 states. [2020-10-28 09:22:00,624 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 130 states to 130 states and 131 transitions. [2020-10-28 09:22:00,625 INFO L78 Accepts]: Start accepts. Automaton has 130 states and 131 transitions. Word has length 124 [2020-10-28 09:22:00,625 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 09:22:00,625 INFO L481 AbstractCegarLoop]: Abstraction has 130 states and 131 transitions. [2020-10-28 09:22:00,625 INFO L482 AbstractCegarLoop]: Interpolant automaton has 25 states. [2020-10-28 09:22:00,625 INFO L276 IsEmpty]: Start isEmpty. Operand 130 states and 131 transitions. [2020-10-28 09:22:00,626 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2020-10-28 09:22:00,626 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 09:22:00,626 INFO L422 BasicCegarLoop]: trace histogram [22, 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 09:22:00,626 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2020-10-28 09:22:00,627 INFO L429 AbstractCegarLoop]: === Iteration 30 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 09:22:00,627 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 09:22:00,627 INFO L82 PathProgramCache]: Analyzing trace with hash 1189768901, now seen corresponding path program 22 times [2020-10-28 09:22:00,627 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 09:22:00,628 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [173151737] [2020-10-28 09:22:00,628 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 09:22:00,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:22:00,665 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:22:01,231 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:22:01,435 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:22:01,756 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:22:05,081 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:22:05,662 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:22:05,662 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 147 [2020-10-28 09:22:05,662 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-28 09:22:05,662 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5012 [2020-10-28 09:22:05,662 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:22:05,662 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:22:05,662 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 24 [2020-10-28 09:22:05,662 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-28 09:22:05,663 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 68 [2020-10-28 09:22:05,663 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:22:06,158 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 09:22:06,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:22:06,161 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:22:06,163 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:22:06,163 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 09:22:06,163 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:22:06,163 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 09:22:06,163 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:22:06,163 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:22:06,164 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:22:06,164 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:22:06,164 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:22:06,164 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:22:06,165 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2020-10-28 09:22:06,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:22:06,167 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:22:06,168 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:22:06,168 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 09:22:06,168 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:22:06,168 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-28 09:22:06,168 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:22:06,168 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:22:06,168 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:22:06,169 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-28 09:22:06,169 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:22:06,169 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:22:06,170 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2020-10-28 09:22:06,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:22:06,171 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:22:06,172 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:22:06,172 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 09:22:06,172 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:22:06,172 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-28 09:22:06,173 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:22:06,173 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:22:06,173 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:22:06,173 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-28 09:22:06,173 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:22:06,173 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:22:06,174 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2020-10-28 09:22:06,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:22:06,175 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:22:06,176 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:22:06,176 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 09:22:06,177 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:22:06,177 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-28 09:22:06,177 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:22:06,177 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:22:06,177 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:22:06,177 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-28 09:22:06,177 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:22:06,177 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:22:06,178 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2020-10-28 09:22:06,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:22:06,180 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:22:06,180 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:22:06,180 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 09:22:06,181 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:22:06,181 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-28 09:22:06,181 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:22:06,181 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:22:06,181 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:22:06,181 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-28 09:22:06,181 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:22:06,182 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:22:06,183 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2020-10-28 09:22:06,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:22:06,184 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:22:06,185 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:22:06,185 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 09:22:06,185 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:22:06,185 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-28 09:22:06,185 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:22:06,185 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:22:06,186 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:22:06,186 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-28 09:22:06,186 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:22:06,186 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:22:06,202 INFO L134 CoverageAnalysis]: Checked inductivity of 830 backedges. 10 proven. 715 refuted. 0 times theorem prover too weak. 105 trivial. 0 not checked. [2020-10-28 09:22:06,203 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [173151737] [2020-10-28 09:22:06,203 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 09:22:06,203 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [26] total 26 [2020-10-28 09:22:06,203 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [409142078] [2020-10-28 09:22:06,204 INFO L461 AbstractCegarLoop]: Interpolant automaton has 26 states [2020-10-28 09:22:06,204 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 09:22:06,204 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2020-10-28 09:22:06,205 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=302, Invalid=348, Unknown=0, NotChecked=0, Total=650 [2020-10-28 09:22:06,205 INFO L87 Difference]: Start difference. First operand 130 states and 131 transitions. Second operand 26 states. [2020-10-28 09:22:07,146 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 09:22:07,146 INFO L93 Difference]: Finished difference Result 284 states and 304 transitions. [2020-10-28 09:22:07,147 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2020-10-28 09:22:07,147 INFO L78 Accepts]: Start accepts. Automaton has 26 states. Word has length 127 [2020-10-28 09:22:07,148 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 09:22:07,150 INFO L225 Difference]: With dead ends: 284 [2020-10-28 09:22:07,150 INFO L226 Difference]: Without dead ends: 227 [2020-10-28 09:22:07,151 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=328, Invalid=374, Unknown=0, NotChecked=0, Total=702 [2020-10-28 09:22:07,151 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 227 states. [2020-10-28 09:22:07,167 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 227 to 133. [2020-10-28 09:22:07,168 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 133 states. [2020-10-28 09:22:07,168 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 133 states to 133 states and 134 transitions. [2020-10-28 09:22:07,169 INFO L78 Accepts]: Start accepts. Automaton has 133 states and 134 transitions. Word has length 127 [2020-10-28 09:22:07,169 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 09:22:07,169 INFO L481 AbstractCegarLoop]: Abstraction has 133 states and 134 transitions. [2020-10-28 09:22:07,169 INFO L482 AbstractCegarLoop]: Interpolant automaton has 26 states. [2020-10-28 09:22:07,169 INFO L276 IsEmpty]: Start isEmpty. Operand 133 states and 134 transitions. [2020-10-28 09:22:07,170 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2020-10-28 09:22:07,170 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 09:22:07,170 INFO L422 BasicCegarLoop]: trace histogram [23, 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 09:22:07,170 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2020-10-28 09:22:07,171 INFO L429 AbstractCegarLoop]: === Iteration 31 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 09:22:07,171 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 09:22:07,171 INFO L82 PathProgramCache]: Analyzing trace with hash -1363638600, now seen corresponding path program 23 times [2020-10-28 09:22:07,171 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 09:22:07,171 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [897750141] [2020-10-28 09:22:07,172 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 09:22:07,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:22:07,207 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:22:07,611 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:22:07,745 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:22:08,317 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:22:11,853 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:22:12,193 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:22:12,194 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 150 [2020-10-28 09:22:12,194 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-28 09:22:12,194 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-10-28 09:22:12,194 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:22:12,194 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:22:12,194 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 34 [2020-10-28 09:22:12,194 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-28 09:22:12,194 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 134 [2020-10-28 09:22:12,194 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:22:12,820 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 09:22:12,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:22:12,822 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:22:12,827 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:22:12,827 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 09:22:12,827 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:22:12,827 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-28 09:22:12,827 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:22:12,828 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:22:12,828 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:22:12,828 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:22:12,828 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:22:12,828 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:22:12,831 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2020-10-28 09:22:12,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:22:12,833 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:22:12,836 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:22:12,837 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 09:22:12,837 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:22:12,837 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 09:22:12,837 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:22:12,837 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:22:12,837 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 09:22:12,838 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:22:12,838 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 09:22:12,838 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:22:12,840 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2020-10-28 09:22:12,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:22:12,842 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:22:12,844 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:22:12,844 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 09:22:12,845 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:22:12,845 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 09:22:12,845 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:22:12,845 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:22:12,845 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 09:22:12,845 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:22:12,845 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 09:22:12,846 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:22:12,847 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2020-10-28 09:22:12,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:22:12,849 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:22:12,851 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:22:12,852 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 09:22:12,852 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:22:12,852 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 09:22:12,852 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:22:12,852 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:22:12,852 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 09:22:12,853 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:22:12,853 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 09:22:12,853 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:22:12,854 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2020-10-28 09:22:12,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:22:12,857 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:22:12,859 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:22:12,859 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 09:22:12,859 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:22:12,859 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 09:22:12,859 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:22:12,860 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:22:12,860 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 09:22:12,860 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:22:12,860 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 09:22:12,860 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:22:12,862 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2020-10-28 09:22:12,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:22:12,864 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:22:12,871 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:22:12,871 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 09:22:12,871 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:22:12,871 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-28 09:22:12,871 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:22:12,872 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:22:12,872 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 09:22:12,872 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:22:12,872 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 09:22:12,872 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:22:12,925 INFO L134 CoverageAnalysis]: Checked inductivity of 897 backedges. 10 proven. 405 refuted. 0 times theorem prover too weak. 482 trivial. 0 not checked. [2020-10-28 09:22:12,926 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [897750141] [2020-10-28 09:22:12,926 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 09:22:12,926 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19] total 19 [2020-10-28 09:22:12,926 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [282429631] [2020-10-28 09:22:12,929 INFO L461 AbstractCegarLoop]: Interpolant automaton has 19 states [2020-10-28 09:22:12,930 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 09:22:12,930 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2020-10-28 09:22:12,930 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=305, Unknown=0, NotChecked=0, Total=342 [2020-10-28 09:22:12,930 INFO L87 Difference]: Start difference. First operand 133 states and 134 transitions. Second operand 19 states. [2020-10-28 09:22:14,323 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 09:22:14,323 INFO L93 Difference]: Finished difference Result 148 states and 149 transitions. [2020-10-28 09:22:14,324 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2020-10-28 09:22:14,324 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 130 [2020-10-28 09:22:14,324 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 09:22:14,325 INFO L225 Difference]: With dead ends: 148 [2020-10-28 09:22:14,325 INFO L226 Difference]: Without dead ends: 144 [2020-10-28 09:22:14,326 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 31 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 09:22:14,327 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 144 states. [2020-10-28 09:22:14,344 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 144 to 142. [2020-10-28 09:22:14,344 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 142 states. [2020-10-28 09:22:14,345 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 142 states to 142 states and 143 transitions. [2020-10-28 09:22:14,345 INFO L78 Accepts]: Start accepts. Automaton has 142 states and 143 transitions. Word has length 130 [2020-10-28 09:22:14,345 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 09:22:14,346 INFO L481 AbstractCegarLoop]: Abstraction has 142 states and 143 transitions. [2020-10-28 09:22:14,346 INFO L482 AbstractCegarLoop]: Interpolant automaton has 19 states. [2020-10-28 09:22:14,346 INFO L276 IsEmpty]: Start isEmpty. Operand 142 states and 143 transitions. [2020-10-28 09:22:14,346 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2020-10-28 09:22:14,347 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 09:22:14,347 INFO L422 BasicCegarLoop]: trace histogram [23, 23, 23, 7, 7, 7, 7, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 09:22:14,347 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2020-10-28 09:22:14,348 INFO L429 AbstractCegarLoop]: === Iteration 32 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 09:22:14,348 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 09:22:14,348 INFO L82 PathProgramCache]: Analyzing trace with hash -1664725116, now seen corresponding path program 24 times [2020-10-28 09:22:14,349 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 09:22:14,349 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [395533022] [2020-10-28 09:22:14,349 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 09:22:14,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:22:14,391 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:22:14,482 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:22:15,168 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:22:16,069 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:22:17,063 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:22:17,978 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:22:19,161 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:22:19,393 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:22:19,394 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 161 [2020-10-28 09:22:19,394 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-28 09:22:19,394 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5018 [2020-10-28 09:22:19,394 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:22:19,394 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:22:19,394 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 25 [2020-10-28 09:22:19,394 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-28 09:22:19,395 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 71 [2020-10-28 09:22:19,395 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:22:19,859 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 09:22:19,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:22:19,863 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:22:19,865 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:22:19,865 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 09:22:19,866 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:22:19,866 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 09:22:19,866 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:22:19,866 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:22:19,866 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:22:19,866 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:22:19,866 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:22:19,866 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:22:19,869 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2020-10-28 09:22:19,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:22:19,870 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:22:19,871 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:22:19,871 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 09:22:19,872 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:22:19,872 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-28 09:22:19,872 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:22:19,872 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:22:19,872 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:22:19,872 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-28 09:22:19,872 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:22:19,872 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:22:19,873 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2020-10-28 09:22:19,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:22:19,875 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:22:19,875 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:22:19,875 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 09:22:19,876 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:22:19,876 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-28 09:22:19,876 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:22:19,876 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:22:19,876 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:22:19,876 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-28 09:22:19,876 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:22:19,876 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:22:19,877 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2020-10-28 09:22:19,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:22:19,878 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:22:19,879 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:22:19,879 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 09:22:19,879 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:22:19,879 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-28 09:22:19,879 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:22:19,880 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:22:19,880 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:22:19,880 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-28 09:22:19,880 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:22:19,880 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:22:19,880 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2020-10-28 09:22:19,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:22:19,882 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:22:19,882 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:22:19,882 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 09:22:19,883 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:22:19,883 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-28 09:22:19,883 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:22:19,883 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:22:19,883 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:22:19,883 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-28 09:22:19,883 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:22:19,883 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:22:19,884 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2020-10-28 09:22:19,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:22:19,885 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:22:19,886 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:22:19,886 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 09:22:19,886 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:22:19,887 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-28 09:22:19,887 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:22:19,887 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:22:19,887 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:22:19,887 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-28 09:22:19,887 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:22:19,887 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:22:19,888 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2020-10-28 09:22:19,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:22:19,889 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:22:19,890 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:22:19,890 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 09:22:19,890 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:22:19,890 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-28 09:22:19,891 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:22:19,891 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:22:19,891 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:22:19,891 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-28 09:22:19,891 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:22:19,891 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:22:19,911 INFO L134 CoverageAnalysis]: Checked inductivity of 947 backedges. 12 proven. 782 refuted. 0 times theorem prover too weak. 153 trivial. 0 not checked. [2020-10-28 09:22:19,911 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [395533022] [2020-10-28 09:22:19,912 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 09:22:19,912 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [27] total 27 [2020-10-28 09:22:19,912 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [154916844] [2020-10-28 09:22:19,912 INFO L461 AbstractCegarLoop]: Interpolant automaton has 27 states [2020-10-28 09:22:19,912 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 09:22:19,913 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2020-10-28 09:22:19,913 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=327, Invalid=375, Unknown=0, NotChecked=0, Total=702 [2020-10-28 09:22:19,914 INFO L87 Difference]: Start difference. First operand 142 states and 143 transitions. Second operand 27 states. [2020-10-28 09:22:20,876 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 09:22:20,877 INFO L93 Difference]: Finished difference Result 305 states and 325 transitions. [2020-10-28 09:22:20,877 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2020-10-28 09:22:20,877 INFO L78 Accepts]: Start accepts. Automaton has 27 states. Word has length 139 [2020-10-28 09:22:20,878 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 09:22:20,879 INFO L225 Difference]: With dead ends: 305 [2020-10-28 09:22:20,879 INFO L226 Difference]: Without dead ends: 239 [2020-10-28 09:22:20,880 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=354, Invalid=402, Unknown=0, NotChecked=0, Total=756 [2020-10-28 09:22:20,880 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 239 states. [2020-10-28 09:22:20,903 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 239 to 145. [2020-10-28 09:22:20,903 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 145 states. [2020-10-28 09:22:20,904 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 145 states to 145 states and 146 transitions. [2020-10-28 09:22:20,905 INFO L78 Accepts]: Start accepts. Automaton has 145 states and 146 transitions. Word has length 139 [2020-10-28 09:22:20,905 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 09:22:20,905 INFO L481 AbstractCegarLoop]: Abstraction has 145 states and 146 transitions. [2020-10-28 09:22:20,905 INFO L482 AbstractCegarLoop]: Interpolant automaton has 27 states. [2020-10-28 09:22:20,905 INFO L276 IsEmpty]: Start isEmpty. Operand 145 states and 146 transitions. [2020-10-28 09:22:20,906 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2020-10-28 09:22:20,906 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 09:22:20,906 INFO L422 BasicCegarLoop]: trace histogram [24, 24, 24, 7, 7, 7, 7, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 09:22:20,906 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2020-10-28 09:22:20,907 INFO L429 AbstractCegarLoop]: === Iteration 33 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 09:22:20,907 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 09:22:20,907 INFO L82 PathProgramCache]: Analyzing trace with hash -343338249, now seen corresponding path program 25 times [2020-10-28 09:22:20,907 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 09:22:20,907 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [616449521] [2020-10-28 09:22:20,908 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 09:22:20,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:22:20,944 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:22:21,516 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:22:21,851 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:22:23,201 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:22:23,869 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:22:25,946 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:22:25,946 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 164 [2020-10-28 09:22:25,946 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-28 09:22:25,946 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5016 [2020-10-28 09:22:25,946 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:22:25,946 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:22:25,946 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 26 [2020-10-28 09:22:25,946 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-28 09:22:25,946 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 74 [2020-10-28 09:22:25,946 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:22:26,556 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 09:22:26,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:22:26,558 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:22:26,561 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:22:26,561 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 09:22:26,561 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:22:26,561 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 09:22:26,561 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:22:26,561 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:22:26,562 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:22:26,562 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:22:26,562 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:22:26,562 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:22:26,564 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2020-10-28 09:22:26,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:22:26,566 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:22:26,567 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:22:26,567 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 09:22:26,567 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:22:26,567 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-28 09:22:26,567 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:22:26,567 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:22:26,567 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:22:26,567 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-28 09:22:26,568 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:22:26,568 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:22:26,569 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2020-10-28 09:22:26,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:22:26,570 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:22:26,570 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:22:26,570 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 09:22:26,571 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:22:26,571 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-28 09:22:26,571 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:22:26,571 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:22:26,571 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:22:26,571 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-28 09:22:26,571 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:22:26,571 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:22:26,572 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2020-10-28 09:22:26,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:22:26,573 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:22:26,574 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:22:26,574 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 09:22:26,574 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:22:26,574 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-28 09:22:26,574 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:22:26,574 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:22:26,574 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:22:26,574 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-28 09:22:26,575 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:22:26,575 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:22:26,575 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2020-10-28 09:22:26,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:22:26,577 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:22:26,577 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:22:26,577 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 09:22:26,577 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:22:26,578 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-28 09:22:26,578 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:22:26,578 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:22:26,578 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:22:26,578 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-28 09:22:26,578 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:22:26,578 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:22:26,579 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2020-10-28 09:22:26,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:22:26,580 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:22:26,581 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:22:26,581 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 09:22:26,581 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:22:26,581 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-28 09:22:26,581 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:22:26,581 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:22:26,581 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:22:26,581 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-28 09:22:26,581 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:22:26,582 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:22:26,582 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2020-10-28 09:22:26,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:22:26,583 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:22:26,584 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:22:26,584 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 09:22:26,584 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:22:26,584 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-28 09:22:26,584 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:22:26,584 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:22:26,585 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:22:26,585 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-28 09:22:26,585 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:22:26,585 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:22:26,604 INFO L134 CoverageAnalysis]: Checked inductivity of 1017 backedges. 12 proven. 852 refuted. 0 times theorem prover too weak. 153 trivial. 0 not checked. [2020-10-28 09:22:26,605 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [616449521] [2020-10-28 09:22:26,605 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 09:22:26,605 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [28] total 28 [2020-10-28 09:22:26,605 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [302477474] [2020-10-28 09:22:26,606 INFO L461 AbstractCegarLoop]: Interpolant automaton has 28 states [2020-10-28 09:22:26,606 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 09:22:26,606 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2020-10-28 09:22:26,607 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=353, Invalid=403, Unknown=0, NotChecked=0, Total=756 [2020-10-28 09:22:26,607 INFO L87 Difference]: Start difference. First operand 145 states and 146 transitions. Second operand 28 states. [2020-10-28 09:22:27,670 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 09:22:27,670 INFO L93 Difference]: Finished difference Result 313 states and 334 transitions. [2020-10-28 09:22:27,671 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-10-28 09:22:27,671 INFO L78 Accepts]: Start accepts. Automaton has 28 states. Word has length 142 [2020-10-28 09:22:27,671 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 09:22:27,673 INFO L225 Difference]: With dead ends: 313 [2020-10-28 09:22:27,673 INFO L226 Difference]: Without dead ends: 247 [2020-10-28 09:22:27,674 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=381, Invalid=431, Unknown=0, NotChecked=0, Total=812 [2020-10-28 09:22:27,675 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 247 states. [2020-10-28 09:22:27,696 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 247 to 148. [2020-10-28 09:22:27,696 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 148 states. [2020-10-28 09:22:27,697 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 148 states to 148 states and 149 transitions. [2020-10-28 09:22:27,698 INFO L78 Accepts]: Start accepts. Automaton has 148 states and 149 transitions. Word has length 142 [2020-10-28 09:22:27,698 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 09:22:27,698 INFO L481 AbstractCegarLoop]: Abstraction has 148 states and 149 transitions. [2020-10-28 09:22:27,698 INFO L482 AbstractCegarLoop]: Interpolant automaton has 28 states. [2020-10-28 09:22:27,698 INFO L276 IsEmpty]: Start isEmpty. Operand 148 states and 149 transitions. [2020-10-28 09:22:27,699 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2020-10-28 09:22:27,699 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 09:22:27,700 INFO L422 BasicCegarLoop]: trace histogram [25, 25, 25, 7, 7, 7, 7, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 09:22:27,700 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2020-10-28 09:22:27,700 INFO L429 AbstractCegarLoop]: === Iteration 34 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 09:22:27,700 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 09:22:27,700 INFO L82 PathProgramCache]: Analyzing trace with hash 1717548708, now seen corresponding path program 26 times [2020-10-28 09:22:27,701 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 09:22:27,701 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [487254160] [2020-10-28 09:22:27,701 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 09:22:27,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:22:27,744 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:22:28,270 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:22:29,749 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:22:30,279 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:22:32,507 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:22:33,211 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:22:33,211 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 167 [2020-10-28 09:22:33,212 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-28 09:22:33,212 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5485 [2020-10-28 09:22:33,212 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:22:33,212 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:22:33,212 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 27 [2020-10-28 09:22:33,212 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-28 09:22:33,212 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 77 [2020-10-28 09:22:33,212 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:22:33,789 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 09:22:33,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:22:33,791 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:22:33,793 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:22:33,793 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 09:22:33,793 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:22:33,794 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 09:22:33,794 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:22:33,794 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:22:33,794 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:22:33,794 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:22:33,794 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:22:33,794 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:22:33,796 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2020-10-28 09:22:33,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:22:33,797 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:22:33,798 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:22:33,798 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 09:22:33,798 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:22:33,798 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-28 09:22:33,798 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:22:33,798 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:22:33,799 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:22:33,799 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-28 09:22:33,799 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:22:33,799 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:22:33,800 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2020-10-28 09:22:33,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:22:33,801 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:22:33,802 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:22:33,802 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 09:22:33,802 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:22:33,802 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-28 09:22:33,802 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:22:33,802 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:22:33,803 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:22:33,803 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-28 09:22:33,803 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:22:33,803 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:22:33,804 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2020-10-28 09:22:33,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:22:33,805 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:22:33,806 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:22:33,806 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 09:22:33,806 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:22:33,806 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-28 09:22:33,806 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:22:33,806 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:22:33,806 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:22:33,807 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-28 09:22:33,807 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:22:33,807 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:22:33,809 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2020-10-28 09:22:33,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:22:33,811 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:22:33,811 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:22:33,812 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 09:22:33,812 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:22:33,812 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-28 09:22:33,812 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:22:33,812 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:22:33,812 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:22:33,812 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-28 09:22:33,812 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:22:33,813 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:22:33,813 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2020-10-28 09:22:33,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:22:33,815 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:22:33,815 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:22:33,816 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 09:22:33,816 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:22:33,816 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-28 09:22:33,816 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:22:33,816 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:22:33,816 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:22:33,816 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-28 09:22:33,817 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:22:33,817 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:22:33,817 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2020-10-28 09:22:33,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:22:33,819 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:22:33,819 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:22:33,819 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 09:22:33,820 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:22:33,820 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-28 09:22:33,820 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:22:33,820 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:22:33,820 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:22:33,820 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-28 09:22:33,820 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:22:33,820 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:22:33,836 INFO L134 CoverageAnalysis]: Checked inductivity of 1090 backedges. 12 proven. 925 refuted. 0 times theorem prover too weak. 153 trivial. 0 not checked. [2020-10-28 09:22:33,836 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [487254160] [2020-10-28 09:22:33,836 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 09:22:33,837 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [29] total 29 [2020-10-28 09:22:33,837 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1049657044] [2020-10-28 09:22:33,837 INFO L461 AbstractCegarLoop]: Interpolant automaton has 29 states [2020-10-28 09:22:33,837 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 09:22:33,838 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2020-10-28 09:22:33,838 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=380, Invalid=432, Unknown=0, NotChecked=0, Total=812 [2020-10-28 09:22:33,838 INFO L87 Difference]: Start difference. First operand 148 states and 149 transitions. Second operand 29 states. [2020-10-28 09:22:34,730 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 09:22:34,730 INFO L93 Difference]: Finished difference Result 321 states and 343 transitions. [2020-10-28 09:22:34,731 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2020-10-28 09:22:34,731 INFO L78 Accepts]: Start accepts. Automaton has 29 states. Word has length 145 [2020-10-28 09:22:34,731 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 09:22:34,733 INFO L225 Difference]: With dead ends: 321 [2020-10-28 09:22:34,733 INFO L226 Difference]: Without dead ends: 255 [2020-10-28 09:22:34,734 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 15 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 09:22:34,734 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 255 states. [2020-10-28 09:22:34,758 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 255 to 151. [2020-10-28 09:22:34,758 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 151 states. [2020-10-28 09:22:34,759 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 151 states to 151 states and 152 transitions. [2020-10-28 09:22:34,760 INFO L78 Accepts]: Start accepts. Automaton has 151 states and 152 transitions. Word has length 145 [2020-10-28 09:22:34,760 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 09:22:34,760 INFO L481 AbstractCegarLoop]: Abstraction has 151 states and 152 transitions. [2020-10-28 09:22:34,760 INFO L482 AbstractCegarLoop]: Interpolant automaton has 29 states. [2020-10-28 09:22:34,760 INFO L276 IsEmpty]: Start isEmpty. Operand 151 states and 152 transitions. [2020-10-28 09:22:34,761 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2020-10-28 09:22:34,761 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 09:22:34,761 INFO L422 BasicCegarLoop]: trace histogram [26, 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 09:22:34,761 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2020-10-28 09:22:34,762 INFO L429 AbstractCegarLoop]: === Iteration 35 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 09:22:34,762 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 09:22:34,762 INFO L82 PathProgramCache]: Analyzing trace with hash 1043388375, now seen corresponding path program 27 times [2020-10-28 09:22:34,762 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 09:22:34,762 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1562952306] [2020-10-28 09:22:34,762 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 09:22:34,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:22:34,805 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:22:35,468 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:22:36,291 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:22:37,705 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:22:38,016 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:22:39,805 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:22:39,805 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 170 [2020-10-28 09:22:39,806 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-28 09:22:39,806 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5019 [2020-10-28 09:22:39,806 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:22:39,806 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:22:39,806 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 28 [2020-10-28 09:22:39,806 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-28 09:22:39,806 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 80 [2020-10-28 09:22:39,806 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:22:40,508 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 09:22:40,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:22:40,511 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:22:40,513 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:22:40,513 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 09:22:40,514 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:22:40,514 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 09:22:40,514 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:22:40,514 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:22:40,514 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:22:40,514 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:22:40,514 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:22:40,515 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:22:40,517 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2020-10-28 09:22:40,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:22:40,518 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:22:40,519 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:22:40,519 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 09:22:40,520 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:22:40,520 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-28 09:22:40,520 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:22:40,520 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:22:40,520 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:22:40,520 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-28 09:22:40,520 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:22:40,520 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:22:40,522 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2020-10-28 09:22:40,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:22:40,523 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:22:40,524 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:22:40,524 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 09:22:40,524 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:22:40,524 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-28 09:22:40,524 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:22:40,524 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:22:40,525 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:22:40,525 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-28 09:22:40,525 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:22:40,525 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:22:40,526 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2020-10-28 09:22:40,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:22:40,528 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:22:40,528 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:22:40,528 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 09:22:40,529 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:22:40,529 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-28 09:22:40,529 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:22:40,529 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:22:40,529 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:22:40,529 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-28 09:22:40,530 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:22:40,530 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:22:40,531 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2020-10-28 09:22:40,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:22:40,532 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:22:40,534 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:22:40,535 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 09:22:40,535 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:22:40,535 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 09:22:40,535 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:22:40,535 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:22:40,535 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:22:40,535 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-28 09:22:40,536 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:22:40,536 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:22:40,537 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2020-10-28 09:22:40,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:22:40,538 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:22:40,539 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:22:40,539 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 09:22:40,539 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:22:40,539 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-28 09:22:40,539 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:22:40,539 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:22:40,539 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:22:40,539 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-28 09:22:40,540 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:22:40,540 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:22:40,540 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2020-10-28 09:22:40,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:22:40,542 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:22:40,542 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:22:40,542 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 09:22:40,542 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:22:40,543 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-28 09:22:40,543 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:22:40,543 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:22:40,543 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:22:40,543 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-28 09:22:40,543 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:22:40,543 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:22:40,591 INFO L134 CoverageAnalysis]: Checked inductivity of 1166 backedges. 12 proven. 1001 refuted. 0 times theorem prover too weak. 153 trivial. 0 not checked. [2020-10-28 09:22:40,591 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1562952306] [2020-10-28 09:22:40,592 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 09:22:40,592 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [30] total 30 [2020-10-28 09:22:40,592 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [982766990] [2020-10-28 09:22:40,593 INFO L461 AbstractCegarLoop]: Interpolant automaton has 30 states [2020-10-28 09:22:40,593 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 09:22:40,594 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2020-10-28 09:22:40,594 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=408, Invalid=462, Unknown=0, NotChecked=0, Total=870 [2020-10-28 09:22:40,594 INFO L87 Difference]: Start difference. First operand 151 states and 152 transitions. Second operand 30 states. [2020-10-28 09:22:41,565 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 09:22:41,565 INFO L93 Difference]: Finished difference Result 329 states and 352 transitions. [2020-10-28 09:22:41,566 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2020-10-28 09:22:41,566 INFO L78 Accepts]: Start accepts. Automaton has 30 states. Word has length 148 [2020-10-28 09:22:41,567 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 09:22:41,569 INFO L225 Difference]: With dead ends: 329 [2020-10-28 09:22:41,570 INFO L226 Difference]: Without dead ends: 263 [2020-10-28 09:22:41,570 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=438, Invalid=492, Unknown=0, NotChecked=0, Total=930 [2020-10-28 09:22:41,571 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 263 states. [2020-10-28 09:22:41,595 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 263 to 154. [2020-10-28 09:22:41,595 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 154 states. [2020-10-28 09:22:41,597 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 154 states to 154 states and 155 transitions. [2020-10-28 09:22:41,597 INFO L78 Accepts]: Start accepts. Automaton has 154 states and 155 transitions. Word has length 148 [2020-10-28 09:22:41,597 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 09:22:41,597 INFO L481 AbstractCegarLoop]: Abstraction has 154 states and 155 transitions. [2020-10-28 09:22:41,597 INFO L482 AbstractCegarLoop]: Interpolant automaton has 30 states. [2020-10-28 09:22:41,598 INFO L276 IsEmpty]: Start isEmpty. Operand 154 states and 155 transitions. [2020-10-28 09:22:41,598 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 152 [2020-10-28 09:22:41,598 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 09:22:41,599 INFO L422 BasicCegarLoop]: trace histogram [27, 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 09:22:41,599 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2020-10-28 09:22:41,599 INFO L429 AbstractCegarLoop]: === Iteration 36 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 09:22:41,599 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 09:22:41,599 INFO L82 PathProgramCache]: Analyzing trace with hash 399984068, now seen corresponding path program 28 times [2020-10-28 09:22:41,599 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 09:22:41,600 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2011784092] [2020-10-28 09:22:41,600 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 09:22:41,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:22:41,641 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:22:41,904 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:22:42,554 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:22:46,183 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:22:46,845 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:22:46,846 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 173 [2020-10-28 09:22:46,846 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-28 09:22:46,846 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5217 [2020-10-28 09:22:46,846 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:22:46,846 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:22:46,846 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 29 [2020-10-28 09:22:46,846 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-28 09:22:46,846 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 83 [2020-10-28 09:22:46,846 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:22:47,492 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 09:22:47,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:22:47,494 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:22:47,496 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:22:47,497 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 09:22:47,497 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:22:47,497 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 09:22:47,497 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:22:47,497 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:22:47,497 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:22:47,497 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:22:47,497 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:22:47,498 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:22:47,501 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2020-10-28 09:22:47,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:22:47,503 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:22:47,504 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:22:47,504 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 09:22:47,504 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:22:47,504 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-28 09:22:47,504 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:22:47,504 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:22:47,504 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:22:47,504 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-28 09:22:47,505 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:22:47,505 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:22:47,505 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2020-10-28 09:22:47,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:22:47,507 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:22:47,507 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:22:47,507 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 09:22:47,507 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:22:47,508 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-28 09:22:47,508 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:22:47,508 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:22:47,508 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:22:47,508 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-28 09:22:47,508 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:22:47,508 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:22:47,509 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2020-10-28 09:22:47,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:22:47,510 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:22:47,511 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:22:47,511 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 09:22:47,511 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:22:47,512 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-28 09:22:47,512 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:22:47,512 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:22:47,512 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:22:47,512 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-28 09:22:47,512 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:22:47,513 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:22:47,513 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2020-10-28 09:22:47,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:22:47,515 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:22:47,515 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:22:47,516 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 09:22:47,516 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:22:47,516 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-28 09:22:47,516 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:22:47,516 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:22:47,516 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:22:47,517 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-28 09:22:47,517 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:22:47,517 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:22:47,518 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2020-10-28 09:22:47,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:22:47,519 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:22:47,520 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:22:47,520 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 09:22:47,520 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:22:47,520 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-28 09:22:47,521 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:22:47,521 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:22:47,521 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:22:47,521 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-28 09:22:47,521 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:22:47,521 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:22:47,522 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2020-10-28 09:22:47,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:22:47,524 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:22:47,525 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:22:47,525 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 09:22:47,525 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:22:47,525 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-28 09:22:47,526 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:22:47,526 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:22:47,526 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:22:47,526 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-28 09:22:47,526 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:22:47,526 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:22:47,548 INFO L134 CoverageAnalysis]: Checked inductivity of 1245 backedges. 12 proven. 1080 refuted. 0 times theorem prover too weak. 153 trivial. 0 not checked. [2020-10-28 09:22:47,549 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2011784092] [2020-10-28 09:22:47,549 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 09:22:47,549 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [31] total 31 [2020-10-28 09:22:47,549 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [392260750] [2020-10-28 09:22:47,549 INFO L461 AbstractCegarLoop]: Interpolant automaton has 31 states [2020-10-28 09:22:47,549 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 09:22:47,550 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2020-10-28 09:22:47,550 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=437, Invalid=493, Unknown=0, NotChecked=0, Total=930 [2020-10-28 09:22:47,550 INFO L87 Difference]: Start difference. First operand 154 states and 155 transitions. Second operand 31 states. [2020-10-28 09:22:48,583 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 09:22:48,583 INFO L93 Difference]: Finished difference Result 337 states and 361 transitions. [2020-10-28 09:22:48,584 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2020-10-28 09:22:48,584 INFO L78 Accepts]: Start accepts. Automaton has 31 states. Word has length 151 [2020-10-28 09:22:48,584 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 09:22:48,587 INFO L225 Difference]: With dead ends: 337 [2020-10-28 09:22:48,587 INFO L226 Difference]: Without dead ends: 271 [2020-10-28 09:22:48,588 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 09:22:48,588 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 271 states. [2020-10-28 09:22:48,610 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 271 to 157. [2020-10-28 09:22:48,611 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 157 states. [2020-10-28 09:22:48,612 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 157 states to 157 states and 158 transitions. [2020-10-28 09:22:48,612 INFO L78 Accepts]: Start accepts. Automaton has 157 states and 158 transitions. Word has length 151 [2020-10-28 09:22:48,612 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 09:22:48,612 INFO L481 AbstractCegarLoop]: Abstraction has 157 states and 158 transitions. [2020-10-28 09:22:48,612 INFO L482 AbstractCegarLoop]: Interpolant automaton has 31 states. [2020-10-28 09:22:48,612 INFO L276 IsEmpty]: Start isEmpty. Operand 157 states and 158 transitions. [2020-10-28 09:22:48,613 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2020-10-28 09:22:48,613 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 09:22:48,613 INFO L422 BasicCegarLoop]: trace histogram [28, 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 09:22:48,614 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2020-10-28 09:22:48,614 INFO L429 AbstractCegarLoop]: === Iteration 37 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 09:22:48,614 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 09:22:48,614 INFO L82 PathProgramCache]: Analyzing trace with hash 1181316279, now seen corresponding path program 29 times [2020-10-28 09:22:48,614 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 09:22:48,614 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [732802793] [2020-10-28 09:22:48,614 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 09:22:48,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:22:48,656 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:22:49,019 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:22:49,537 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:22:52,228 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:22:53,642 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:22:53,642 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 176 [2020-10-28 09:22:53,643 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-28 09:22:53,643 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5003 [2020-10-28 09:22:53,643 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:22:53,643 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:22:53,643 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 30 [2020-10-28 09:22:53,643 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-28 09:22:53,643 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 86 [2020-10-28 09:22:53,643 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:22:54,333 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 09:22:54,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:22:54,335 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:22:54,339 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:22:54,340 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 09:22:54,340 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:22:54,340 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-28 09:22:54,340 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:22:54,340 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:22:54,340 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:22:54,340 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:22:54,341 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:22:54,341 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:22:54,343 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2020-10-28 09:22:54,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:22:54,345 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:22:54,345 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:22:54,346 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 09:22:54,346 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:22:54,346 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-28 09:22:54,346 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:22:54,346 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:22:54,346 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:22:54,346 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-28 09:22:54,346 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:22:54,347 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:22:54,347 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2020-10-28 09:22:54,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:22:54,349 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:22:54,349 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:22:54,349 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 09:22:54,350 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:22:54,350 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-28 09:22:54,350 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:22:54,350 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:22:54,350 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:22:54,350 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-28 09:22:54,350 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:22:54,351 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:22:54,351 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2020-10-28 09:22:54,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:22:54,352 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:22:54,353 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:22:54,353 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 09:22:54,353 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:22:54,353 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-28 09:22:54,354 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:22:54,354 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:22:54,354 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:22:54,354 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-28 09:22:54,354 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:22:54,354 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:22:54,355 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2020-10-28 09:22:54,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:22:54,356 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:22:54,359 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:22:54,359 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 09:22:54,359 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:22:54,359 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 09:22:54,359 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:22:54,360 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:22:54,360 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:22:54,360 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-28 09:22:54,360 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:22:54,360 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:22:54,361 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2020-10-28 09:22:54,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:22:54,362 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:22:54,363 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:22:54,364 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 09:22:54,364 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:22:54,364 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-28 09:22:54,364 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:22:54,364 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:22:54,364 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:22:54,365 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-28 09:22:54,365 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:22:54,365 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:22:54,366 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2020-10-28 09:22:54,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:22:54,367 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:22:54,368 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:22:54,368 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 09:22:54,368 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:22:54,369 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-28 09:22:54,369 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:22:54,369 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:22:54,369 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:22:54,369 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-28 09:22:54,369 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:22:54,369 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:22:54,395 INFO L134 CoverageAnalysis]: Checked inductivity of 1327 backedges. 12 proven. 1162 refuted. 0 times theorem prover too weak. 153 trivial. 0 not checked. [2020-10-28 09:22:54,397 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [732802793] [2020-10-28 09:22:54,397 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 09:22:54,398 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [32] total 32 [2020-10-28 09:22:54,399 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [771725637] [2020-10-28 09:22:54,400 INFO L461 AbstractCegarLoop]: Interpolant automaton has 32 states [2020-10-28 09:22:54,400 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 09:22:54,400 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2020-10-28 09:22:54,401 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=467, Invalid=525, Unknown=0, NotChecked=0, Total=992 [2020-10-28 09:22:54,401 INFO L87 Difference]: Start difference. First operand 157 states and 158 transitions. Second operand 32 states. [2020-10-28 09:22:55,638 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 09:22:55,638 INFO L93 Difference]: Finished difference Result 345 states and 370 transitions. [2020-10-28 09:22:55,639 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2020-10-28 09:22:55,639 INFO L78 Accepts]: Start accepts. Automaton has 32 states. Word has length 154 [2020-10-28 09:22:55,640 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 09:22:55,641 INFO L225 Difference]: With dead ends: 345 [2020-10-28 09:22:55,642 INFO L226 Difference]: Without dead ends: 279 [2020-10-28 09:22:55,642 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 09:22:55,643 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 279 states. [2020-10-28 09:22:55,666 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 279 to 160. [2020-10-28 09:22:55,667 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 160 states. [2020-10-28 09:22:55,667 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 160 states to 160 states and 161 transitions. [2020-10-28 09:22:55,668 INFO L78 Accepts]: Start accepts. Automaton has 160 states and 161 transitions. Word has length 154 [2020-10-28 09:22:55,668 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 09:22:55,668 INFO L481 AbstractCegarLoop]: Abstraction has 160 states and 161 transitions. [2020-10-28 09:22:55,668 INFO L482 AbstractCegarLoop]: Interpolant automaton has 32 states. [2020-10-28 09:22:55,668 INFO L276 IsEmpty]: Start isEmpty. Operand 160 states and 161 transitions. [2020-10-28 09:22:55,669 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 158 [2020-10-28 09:22:55,669 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 09:22:55,669 INFO L422 BasicCegarLoop]: trace histogram [29, 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 09:22:55,669 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2020-10-28 09:22:55,670 INFO L429 AbstractCegarLoop]: === Iteration 38 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 09:22:55,670 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 09:22:55,670 INFO L82 PathProgramCache]: Analyzing trace with hash -873530140, now seen corresponding path program 30 times [2020-10-28 09:22:55,670 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 09:22:55,670 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [391878700] [2020-10-28 09:22:55,670 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 09:22:55,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:22:55,714 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:22:55,909 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:22:56,721 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:22:58,482 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:22:59,325 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:22:59,429 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:23:00,197 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:23:00,699 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:23:00,699 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 179 [2020-10-28 09:23:00,699 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-28 09:23:00,699 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5003 [2020-10-28 09:23:00,699 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:23:00,699 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:23:00,699 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 31 [2020-10-28 09:23:00,699 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-28 09:23:00,699 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 89 [2020-10-28 09:23:00,699 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:23:01,443 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 09:23:01,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:23:01,446 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:23:01,450 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:23:01,451 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 09:23:01,451 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:23:01,451 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-28 09:23:01,451 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:23:01,451 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:23:01,452 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:23:01,452 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:23:01,452 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:23:01,452 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:23:01,454 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2020-10-28 09:23:01,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:23:01,456 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:23:01,456 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:23:01,457 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 09:23:01,457 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:23:01,457 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-28 09:23:01,457 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:23:01,457 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:23:01,457 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:23:01,457 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-28 09:23:01,457 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:23:01,458 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:23:01,459 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2020-10-28 09:23:01,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:23:01,460 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:23:01,461 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:23:01,461 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 09:23:01,461 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:23:01,461 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-28 09:23:01,461 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:23:01,462 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:23:01,462 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:23:01,462 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-28 09:23:01,462 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:23:01,462 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:23:01,463 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2020-10-28 09:23:01,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:23:01,464 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:23:01,465 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:23:01,465 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 09:23:01,465 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:23:01,466 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-28 09:23:01,466 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:23:01,466 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:23:01,466 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:23:01,466 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-28 09:23:01,466 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:23:01,466 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:23:01,467 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2020-10-28 09:23:01,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:23:01,469 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:23:01,469 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:23:01,470 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 09:23:01,470 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:23:01,470 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-28 09:23:01,470 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:23:01,470 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:23:01,470 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:23:01,470 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-28 09:23:01,471 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:23:01,471 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:23:01,472 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2020-10-28 09:23:01,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:23:01,473 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:23:01,473 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:23:01,474 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 09:23:01,474 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:23:01,474 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-28 09:23:01,474 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:23:01,474 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:23:01,474 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:23:01,474 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-28 09:23:01,474 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:23:01,475 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:23:01,475 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2020-10-28 09:23:01,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:23:01,477 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:23:01,477 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:23:01,478 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 09:23:01,478 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:23:01,478 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-28 09:23:01,478 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:23:01,478 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:23:01,478 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:23:01,478 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-28 09:23:01,479 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:23:01,479 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:23:01,520 INFO L134 CoverageAnalysis]: Checked inductivity of 1412 backedges. 12 proven. 1247 refuted. 0 times theorem prover too weak. 153 trivial. 0 not checked. [2020-10-28 09:23:01,521 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [391878700] [2020-10-28 09:23:01,521 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 09:23:01,521 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [33] total 33 [2020-10-28 09:23:01,521 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1430715987] [2020-10-28 09:23:01,521 INFO L461 AbstractCegarLoop]: Interpolant automaton has 33 states [2020-10-28 09:23:01,522 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 09:23:01,522 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2020-10-28 09:23:01,522 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=498, Invalid=558, Unknown=0, NotChecked=0, Total=1056 [2020-10-28 09:23:01,523 INFO L87 Difference]: Start difference. First operand 160 states and 161 transitions. Second operand 33 states. [2020-10-28 09:23:02,805 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 09:23:02,806 INFO L93 Difference]: Finished difference Result 353 states and 379 transitions. [2020-10-28 09:23:02,806 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2020-10-28 09:23:02,806 INFO L78 Accepts]: Start accepts. Automaton has 33 states. Word has length 157 [2020-10-28 09:23:02,807 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 09:23:02,808 INFO L225 Difference]: With dead ends: 353 [2020-10-28 09:23:02,808 INFO L226 Difference]: Without dead ends: 287 [2020-10-28 09:23:02,809 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 09:23:02,810 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 287 states. [2020-10-28 09:23:02,834 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 287 to 163. [2020-10-28 09:23:02,835 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 163 states. [2020-10-28 09:23:02,836 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 163 states to 163 states and 164 transitions. [2020-10-28 09:23:02,836 INFO L78 Accepts]: Start accepts. Automaton has 163 states and 164 transitions. Word has length 157 [2020-10-28 09:23:02,836 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 09:23:02,836 INFO L481 AbstractCegarLoop]: Abstraction has 163 states and 164 transitions. [2020-10-28 09:23:02,836 INFO L482 AbstractCegarLoop]: Interpolant automaton has 33 states. [2020-10-28 09:23:02,836 INFO L276 IsEmpty]: Start isEmpty. Operand 163 states and 164 transitions. [2020-10-28 09:23:02,837 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 161 [2020-10-28 09:23:02,837 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 09:23:02,837 INFO L422 BasicCegarLoop]: trace histogram [30, 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 09:23:02,838 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2020-10-28 09:23:02,838 INFO L429 AbstractCegarLoop]: === Iteration 39 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 09:23:02,838 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 09:23:02,838 INFO L82 PathProgramCache]: Analyzing trace with hash -634328681, now seen corresponding path program 31 times [2020-10-28 09:23:02,838 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 09:23:02,838 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [930953167] [2020-10-28 09:23:02,839 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 09:23:02,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:23:02,879 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:23:03,546 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:23:04,181 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:23:05,158 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:23:07,875 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:23:08,470 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:23:08,470 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 182 [2020-10-28 09:23:08,470 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-28 09:23:08,471 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5607 [2020-10-28 09:23:08,471 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:23:08,471 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:23:08,471 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 32 [2020-10-28 09:23:08,471 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-28 09:23:08,471 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 92 [2020-10-28 09:23:08,471 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:23:09,289 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 09:23:09,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:23:09,291 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:23:09,295 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:23:09,295 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 09:23:09,295 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:23:09,295 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 09:23:09,295 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:23:09,295 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:23:09,296 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:23:09,296 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:23:09,296 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:23:09,296 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:23:09,298 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2020-10-28 09:23:09,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:23:09,299 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:23:09,302 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:23:09,302 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 09:23:09,302 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:23:09,302 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 09:23:09,302 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:23:09,303 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:23:09,303 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:23:09,303 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-28 09:23:09,303 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:23:09,303 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:23:09,304 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2020-10-28 09:23:09,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:23:09,306 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:23:09,306 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:23:09,307 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 09:23:09,307 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:23:09,307 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-28 09:23:09,307 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:23:09,307 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:23:09,307 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:23:09,307 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-28 09:23:09,308 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:23:09,308 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:23:09,308 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2020-10-28 09:23:09,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:23:09,310 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:23:09,310 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:23:09,310 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 09:23:09,311 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:23:09,311 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-28 09:23:09,311 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:23:09,311 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:23:09,311 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:23:09,311 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-28 09:23:09,311 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:23:09,312 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:23:09,313 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2020-10-28 09:23:09,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:23:09,314 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:23:09,315 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:23:09,315 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 09:23:09,315 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:23:09,315 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-28 09:23:09,315 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:23:09,315 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:23:09,315 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:23:09,315 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-28 09:23:09,316 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:23:09,316 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:23:09,316 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2020-10-28 09:23:09,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:23:09,318 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:23:09,318 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:23:09,318 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 09:23:09,319 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:23:09,319 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-28 09:23:09,319 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:23:09,319 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:23:09,319 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:23:09,319 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-28 09:23:09,319 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:23:09,319 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:23:09,320 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 145 [2020-10-28 09:23:09,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:23:09,335 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:23:09,336 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:23:09,336 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 09:23:09,336 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:23:09,336 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-28 09:23:09,337 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:23:09,337 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:23:09,337 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:23:09,337 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-28 09:23:09,337 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:23:09,337 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:23:09,366 INFO L134 CoverageAnalysis]: Checked inductivity of 1500 backedges. 12 proven. 1335 refuted. 0 times theorem prover too weak. 153 trivial. 0 not checked. [2020-10-28 09:23:09,366 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [930953167] [2020-10-28 09:23:09,366 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 09:23:09,366 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [34] total 34 [2020-10-28 09:23:09,366 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [304942453] [2020-10-28 09:23:09,367 INFO L461 AbstractCegarLoop]: Interpolant automaton has 34 states [2020-10-28 09:23:09,367 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 09:23:09,367 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2020-10-28 09:23:09,368 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=530, Invalid=592, Unknown=0, NotChecked=0, Total=1122 [2020-10-28 09:23:09,368 INFO L87 Difference]: Start difference. First operand 163 states and 164 transitions. Second operand 34 states. [2020-10-28 09:23:10,710 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 09:23:10,710 INFO L93 Difference]: Finished difference Result 361 states and 388 transitions. [2020-10-28 09:23:10,710 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2020-10-28 09:23:10,711 INFO L78 Accepts]: Start accepts. Automaton has 34 states. Word has length 160 [2020-10-28 09:23:10,712 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 09:23:10,714 INFO L225 Difference]: With dead ends: 361 [2020-10-28 09:23:10,714 INFO L226 Difference]: Without dead ends: 295 [2020-10-28 09:23:10,715 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=564, Invalid=626, Unknown=0, NotChecked=0, Total=1190 [2020-10-28 09:23:10,716 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 295 states. [2020-10-28 09:23:10,741 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 295 to 166. [2020-10-28 09:23:10,742 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 166 states. [2020-10-28 09:23:10,743 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 166 states to 166 states and 167 transitions. [2020-10-28 09:23:10,743 INFO L78 Accepts]: Start accepts. Automaton has 166 states and 167 transitions. Word has length 160 [2020-10-28 09:23:10,743 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 09:23:10,743 INFO L481 AbstractCegarLoop]: Abstraction has 166 states and 167 transitions. [2020-10-28 09:23:10,743 INFO L482 AbstractCegarLoop]: Interpolant automaton has 34 states. [2020-10-28 09:23:10,744 INFO L276 IsEmpty]: Start isEmpty. Operand 166 states and 167 transitions. [2020-10-28 09:23:10,744 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 164 [2020-10-28 09:23:10,745 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 09:23:10,745 INFO L422 BasicCegarLoop]: trace histogram [31, 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 09:23:10,745 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2020-10-28 09:23:10,745 INFO L429 AbstractCegarLoop]: === Iteration 40 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 09:23:10,745 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 09:23:10,746 INFO L82 PathProgramCache]: Analyzing trace with hash 65592324, now seen corresponding path program 32 times [2020-10-28 09:23:10,746 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 09:23:10,746 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1417412395] [2020-10-28 09:23:10,746 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 09:23:10,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:23:10,791 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:23:11,855 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:23:13,278 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:23:15,921 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:23:15,921 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 185 [2020-10-28 09:23:15,921 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-28 09:23:15,921 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5148 [2020-10-28 09:23:15,922 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:23:15,922 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:23:15,922 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 33 [2020-10-28 09:23:15,922 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-28 09:23:15,922 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 95 [2020-10-28 09:23:15,922 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:23:16,800 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 09:23:16,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:23:16,802 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:23:16,805 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:23:16,805 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 09:23:16,805 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:23:16,805 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 09:23:16,805 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:23:16,805 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:23:16,805 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:23:16,805 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:23:16,805 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:23:16,805 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:23:16,807 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2020-10-28 09:23:16,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:23:16,808 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:23:16,808 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:23:16,808 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 09:23:16,808 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:23:16,808 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-28 09:23:16,808 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:23:16,808 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:23:16,809 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:23:16,809 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-28 09:23:16,809 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:23:16,809 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:23:16,809 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2020-10-28 09:23:16,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:23:16,810 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:23:16,811 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:23:16,811 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 09:23:16,811 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:23:16,811 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-28 09:23:16,811 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:23:16,811 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:23:16,811 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:23:16,811 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-28 09:23:16,811 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:23:16,811 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:23:16,812 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2020-10-28 09:23:16,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:23:16,813 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:23:16,813 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:23:16,813 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 09:23:16,813 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:23:16,813 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-28 09:23:16,813 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:23:16,813 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:23:16,814 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:23:16,814 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-28 09:23:16,814 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:23:16,814 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:23:16,814 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2020-10-28 09:23:16,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:23:16,815 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:23:16,817 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:23:16,817 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 09:23:16,817 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:23:16,817 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-28 09:23:16,817 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:23:16,817 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:23:16,817 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:23:16,817 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-28 09:23:16,817 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:23:16,817 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:23:16,818 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2020-10-28 09:23:16,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:23:16,819 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:23:16,819 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:23:16,819 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 09:23:16,819 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:23:16,819 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-28 09:23:16,819 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:23:16,820 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:23:16,820 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:23:16,820 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-28 09:23:16,820 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:23:16,820 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:23:16,820 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 148 [2020-10-28 09:23:16,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:23:16,821 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:23:16,822 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:23:16,822 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 09:23:16,822 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:23:16,822 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-28 09:23:16,822 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:23:16,822 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:23:16,822 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:23:16,822 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-28 09:23:16,823 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:23:16,823 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:23:16,840 INFO L134 CoverageAnalysis]: Checked inductivity of 1591 backedges. 12 proven. 1426 refuted. 0 times theorem prover too weak. 153 trivial. 0 not checked. [2020-10-28 09:23:16,840 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1417412395] [2020-10-28 09:23:16,840 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 09:23:16,840 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [35] total 35 [2020-10-28 09:23:16,840 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [22531052] [2020-10-28 09:23:16,841 INFO L461 AbstractCegarLoop]: Interpolant automaton has 35 states [2020-10-28 09:23:16,841 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 09:23:16,841 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2020-10-28 09:23:16,842 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=563, Invalid=627, Unknown=0, NotChecked=0, Total=1190 [2020-10-28 09:23:16,842 INFO L87 Difference]: Start difference. First operand 166 states and 167 transitions. Second operand 35 states. [2020-10-28 09:23:18,240 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 09:23:18,240 INFO L93 Difference]: Finished difference Result 369 states and 397 transitions. [2020-10-28 09:23:18,240 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2020-10-28 09:23:18,241 INFO L78 Accepts]: Start accepts. Automaton has 35 states. Word has length 163 [2020-10-28 09:23:18,241 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 09:23:18,242 INFO L225 Difference]: With dead ends: 369 [2020-10-28 09:23:18,242 INFO L226 Difference]: Without dead ends: 303 [2020-10-28 09:23:18,243 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 09:23:18,243 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 303 states. [2020-10-28 09:23:18,269 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 303 to 169. [2020-10-28 09:23:18,269 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 169 states. [2020-10-28 09:23:18,270 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 169 states to 169 states and 170 transitions. [2020-10-28 09:23:18,270 INFO L78 Accepts]: Start accepts. Automaton has 169 states and 170 transitions. Word has length 163 [2020-10-28 09:23:18,270 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 09:23:18,270 INFO L481 AbstractCegarLoop]: Abstraction has 169 states and 170 transitions. [2020-10-28 09:23:18,271 INFO L482 AbstractCegarLoop]: Interpolant automaton has 35 states. [2020-10-28 09:23:18,271 INFO L276 IsEmpty]: Start isEmpty. Operand 169 states and 170 transitions. [2020-10-28 09:23:18,271 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 167 [2020-10-28 09:23:18,272 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 09:23:18,272 INFO L422 BasicCegarLoop]: trace histogram [32, 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 09:23:18,272 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39 [2020-10-28 09:23:18,272 INFO L429 AbstractCegarLoop]: === Iteration 41 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 09:23:18,272 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 09:23:18,273 INFO L82 PathProgramCache]: Analyzing trace with hash -653969801, now seen corresponding path program 33 times [2020-10-28 09:23:18,273 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 09:23:18,273 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1624849096] [2020-10-28 09:23:18,273 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 09:23:18,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:23:18,327 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:23:18,897 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:23:21,384 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:23:23,130 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:23:23,988 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:23:23,988 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 188 [2020-10-28 09:23:23,988 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-28 09:23:23,988 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5678 [2020-10-28 09:23:23,988 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:23:23,988 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:23:23,988 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 34 [2020-10-28 09:23:23,989 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-28 09:23:23,989 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 98 [2020-10-28 09:23:23,989 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:23:24,925 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 09:23:24,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:23:24,929 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:23:24,930 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:23:24,930 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 09:23:24,931 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:23:24,931 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 09:23:24,931 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:23:24,931 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:23:24,931 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:23:24,931 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:23:24,931 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:23:24,931 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:23:24,932 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2020-10-28 09:23:24,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:23:24,934 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:23:24,934 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:23:24,934 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 09:23:24,934 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:23:24,935 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-28 09:23:24,935 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:23:24,935 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:23:24,935 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:23:24,935 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-28 09:23:24,935 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:23:24,935 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:23:24,936 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2020-10-28 09:23:24,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:23:24,937 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:23:24,938 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:23:24,938 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 09:23:24,938 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:23:24,938 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-28 09:23:24,938 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:23:24,938 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:23:24,938 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:23:24,938 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-28 09:23:24,938 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:23:24,939 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:23:24,939 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2020-10-28 09:23:24,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:23:24,940 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:23:24,940 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:23:24,940 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 09:23:24,941 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:23:24,941 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-28 09:23:24,941 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:23:24,941 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:23:24,941 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:23:24,941 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-28 09:23:24,941 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:23:24,941 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:23:24,942 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2020-10-28 09:23:24,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:23:24,943 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:23:24,944 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:23:24,944 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 09:23:24,944 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:23:24,944 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-28 09:23:24,944 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:23:24,944 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:23:24,944 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:23:24,944 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-28 09:23:24,944 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:23:24,944 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:23:24,945 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2020-10-28 09:23:24,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:23:24,946 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:23:24,946 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:23:24,946 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 09:23:24,947 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:23:24,947 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-28 09:23:24,947 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:23:24,947 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:23:24,947 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:23:24,947 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-28 09:23:24,947 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:23:24,947 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:23:24,948 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 151 [2020-10-28 09:23:24,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:23:24,949 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:23:24,949 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:23:24,949 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 09:23:24,949 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:23:24,950 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-28 09:23:24,950 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:23:24,950 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:23:24,950 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:23:24,950 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-28 09:23:24,950 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:23:24,950 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:23:24,968 INFO L134 CoverageAnalysis]: Checked inductivity of 1685 backedges. 12 proven. 1520 refuted. 0 times theorem prover too weak. 153 trivial. 0 not checked. [2020-10-28 09:23:24,969 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1624849096] [2020-10-28 09:23:24,969 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 09:23:24,969 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [36] total 36 [2020-10-28 09:23:24,969 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [71723606] [2020-10-28 09:23:24,969 INFO L461 AbstractCegarLoop]: Interpolant automaton has 36 states [2020-10-28 09:23:24,969 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 09:23:24,970 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2020-10-28 09:23:24,970 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=597, Invalid=663, Unknown=0, NotChecked=0, Total=1260 [2020-10-28 09:23:24,971 INFO L87 Difference]: Start difference. First operand 169 states and 170 transitions. Second operand 36 states. [2020-10-28 09:23:26,232 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 09:23:26,233 INFO L93 Difference]: Finished difference Result 377 states and 406 transitions. [2020-10-28 09:23:26,233 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2020-10-28 09:23:26,233 INFO L78 Accepts]: Start accepts. Automaton has 36 states. Word has length 166 [2020-10-28 09:23:26,234 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 09:23:26,236 INFO L225 Difference]: With dead ends: 377 [2020-10-28 09:23:26,236 INFO L226 Difference]: Without dead ends: 311 [2020-10-28 09:23:26,237 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=633, Invalid=699, Unknown=0, NotChecked=0, Total=1332 [2020-10-28 09:23:26,238 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 311 states. [2020-10-28 09:23:26,264 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 311 to 172. [2020-10-28 09:23:26,264 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 172 states. [2020-10-28 09:23:26,265 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 172 states to 172 states and 173 transitions. [2020-10-28 09:23:26,265 INFO L78 Accepts]: Start accepts. Automaton has 172 states and 173 transitions. Word has length 166 [2020-10-28 09:23:26,266 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 09:23:26,266 INFO L481 AbstractCegarLoop]: Abstraction has 172 states and 173 transitions. [2020-10-28 09:23:26,266 INFO L482 AbstractCegarLoop]: Interpolant automaton has 36 states. [2020-10-28 09:23:26,266 INFO L276 IsEmpty]: Start isEmpty. Operand 172 states and 173 transitions. [2020-10-28 09:23:26,267 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 170 [2020-10-28 09:23:26,267 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 09:23:26,267 INFO L422 BasicCegarLoop]: trace histogram [33, 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 09:23:26,267 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40 [2020-10-28 09:23:26,267 INFO L429 AbstractCegarLoop]: === Iteration 42 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 09:23:26,268 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 09:23:26,268 INFO L82 PathProgramCache]: Analyzing trace with hash -947461340, now seen corresponding path program 34 times [2020-10-28 09:23:26,268 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 09:23:26,268 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1640037565] [2020-10-28 09:23:26,268 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 09:23:26,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:23:26,312 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:23:27,164 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:23:28,207 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:23:29,151 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:23:31,297 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:23:31,297 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 191 [2020-10-28 09:23:31,297 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-28 09:23:31,297 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5003 [2020-10-28 09:23:31,297 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:23:31,298 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:23:31,298 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 35 [2020-10-28 09:23:31,298 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-28 09:23:31,298 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 101 [2020-10-28 09:23:31,298 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:23:32,279 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 09:23:32,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:23:32,282 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:23:32,284 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:23:32,284 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 09:23:32,284 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:23:32,284 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 09:23:32,284 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:23:32,284 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:23:32,284 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:23:32,284 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:23:32,285 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:23:32,285 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:23:32,287 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2020-10-28 09:23:32,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:23:32,288 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:23:32,289 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:23:32,289 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 09:23:32,289 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:23:32,289 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-28 09:23:32,289 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:23:32,289 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:23:32,289 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:23:32,289 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-28 09:23:32,289 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:23:32,290 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:23:32,290 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2020-10-28 09:23:32,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:23:32,291 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:23:32,291 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:23:32,291 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 09:23:32,291 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:23:32,291 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-28 09:23:32,291 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:23:32,292 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:23:32,292 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:23:32,292 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-28 09:23:32,292 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:23:32,292 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:23:32,292 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2020-10-28 09:23:32,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:23:32,293 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:23:32,294 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:23:32,294 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 09:23:32,294 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:23:32,294 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-28 09:23:32,294 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:23:32,294 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:23:32,294 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:23:32,294 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-28 09:23:32,294 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:23:32,294 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:23:32,295 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2020-10-28 09:23:32,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:23:32,296 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:23:32,297 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:23:32,297 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 09:23:32,297 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:23:32,297 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-28 09:23:32,297 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:23:32,298 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:23:32,298 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:23:32,298 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-28 09:23:32,298 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:23:32,298 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:23:32,299 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 145 [2020-10-28 09:23:32,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:23:32,300 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:23:32,301 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:23:32,301 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 09:23:32,301 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:23:32,301 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-28 09:23:32,301 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:23:32,301 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:23:32,302 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:23:32,302 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-28 09:23:32,302 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:23:32,302 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:23:32,303 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 154 [2020-10-28 09:23:32,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:23:32,304 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:23:32,305 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:23:32,305 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 09:23:32,305 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:23:32,305 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-28 09:23:32,305 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:23:32,305 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:23:32,305 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:23:32,306 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-28 09:23:32,306 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:23:32,306 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0