/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=SMALLESTAMONGWIDE --traceabstraction.additional.smt.options tolerance=0.3 --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/reducercommutativity/sep60-2.i -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-29 12:16:28,372 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-29 12:16:28,375 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-29 12:16:28,411 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-29 12:16:28,412 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-29 12:16:28,413 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-29 12:16:28,418 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-29 12:16:28,421 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-29 12:16:28,423 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-29 12:16:28,430 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-29 12:16:28,431 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-29 12:16:28,433 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-29 12:16:28,433 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-29 12:16:28,435 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-29 12:16:28,439 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-29 12:16:28,442 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-29 12:16:28,443 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-29 12:16:28,447 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-29 12:16:28,455 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-29 12:16:28,463 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-29 12:16:28,467 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-29 12:16:28,469 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-29 12:16:28,470 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-29 12:16:28,471 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-29 12:16:28,478 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-29 12:16:28,479 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-29 12:16:28,479 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-29 12:16:28,480 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-29 12:16:28,481 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-29 12:16:28,482 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-29 12:16:28,482 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-29 12:16:28,483 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-29 12:16:28,484 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-29 12:16:28,485 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-29 12:16:28,487 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-29 12:16:28,487 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-29 12:16:28,488 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-29 12:16:28,488 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-29 12:16:28,488 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-29 12:16:28,489 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-29 12:16:28,490 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-29 12:16:28,491 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 [2020-10-29 12:16:28,538 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-29 12:16:28,539 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-29 12:16:28,544 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-29 12:16:28,544 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-29 12:16:28,544 INFO L138 SettingsManager]: * Use SBE=true [2020-10-29 12:16:28,545 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-29 12:16:28,545 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-29 12:16:28,545 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-29 12:16:28,545 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-29 12:16:28,545 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-29 12:16:28,547 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-29 12:16:28,547 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-29 12:16:28,547 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-29 12:16:28,548 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-29 12:16:28,548 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-29 12:16:28,548 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-29 12:16:28,548 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-29 12:16:28,548 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-29 12:16:28,549 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-29 12:16:28,549 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-29 12:16:28,549 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-29 12:16:28,549 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-29 12:16:28,549 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-29 12:16:28,550 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-29 12:16:28,550 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-29 12:16:28,550 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-29 12:16:28,551 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-29 12:16:28,551 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-29 12:16:28,551 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-29 12:16:28,551 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.3;log-additional-information=true;unknown-allowed=true; [2020-10-29 12:16:28,960 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-29 12:16:28,997 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-29 12:16:29,001 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-29 12:16:29,003 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-29 12:16:29,003 INFO L275 PluginConnector]: CDTParser initialized [2020-10-29 12:16:29,004 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/reducercommutativity/sep60-2.i [2020-10-29 12:16:29,097 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/268cd944c/a45f2657e8684228895bfeff81e4ce82/FLAGc4b31d4da [2020-10-29 12:16:29,726 INFO L306 CDTParser]: Found 1 translation units. [2020-10-29 12:16:29,727 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/reducercommutativity/sep60-2.i [2020-10-29 12:16:29,735 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/268cd944c/a45f2657e8684228895bfeff81e4ce82/FLAGc4b31d4da [2020-10-29 12:16:30,126 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/268cd944c/a45f2657e8684228895bfeff81e4ce82 [2020-10-29 12:16:30,133 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-29 12:16:30,142 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-29 12:16:30,148 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-29 12:16:30,148 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-29 12:16:30,153 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-29 12:16:30,155 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.10 12:16:30" (1/1) ... [2020-10-29 12:16:30,162 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5cdc0333 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 12:16:30, skipping insertion in model container [2020-10-29 12:16:30,163 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.10 12:16:30" (1/1) ... [2020-10-29 12:16:30,172 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-29 12:16:30,200 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-29 12:16:30,480 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-29 12:16:30,494 INFO L203 MainTranslator]: Completed pre-run [2020-10-29 12:16:30,551 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-29 12:16:30,575 INFO L208 MainTranslator]: Completed translation [2020-10-29 12:16:30,576 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 12:16:30 WrapperNode [2020-10-29 12:16:30,577 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-29 12:16:30,578 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-29 12:16:30,578 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-29 12:16:30,578 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-29 12:16:30,594 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 12:16:30" (1/1) ... [2020-10-29 12:16:30,596 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 12:16:30" (1/1) ... [2020-10-29 12:16:30,618 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 12:16:30" (1/1) ... [2020-10-29 12:16:30,618 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 12:16:30" (1/1) ... [2020-10-29 12:16:30,639 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 12:16:30" (1/1) ... [2020-10-29 12:16:30,646 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 12:16:30" (1/1) ... [2020-10-29 12:16:30,649 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 12:16:30" (1/1) ... [2020-10-29 12:16:30,658 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-29 12:16:30,659 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-29 12:16:30,660 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-29 12:16:30,660 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-29 12:16:30,662 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 12:16:30" (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 [2020-10-29 12:16:30,749 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-29 12:16:30,749 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-29 12:16:30,749 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-29 12:16:30,750 INFO L138 BoogieDeclarations]: Found implementation of procedure sep [2020-10-29 12:16:30,750 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-29 12:16:30,750 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-29 12:16:30,750 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-29 12:16:30,750 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_perror_fail [2020-10-29 12:16:30,751 INFO L130 BoogieDeclarations]: Found specification of procedure __assert [2020-10-29 12:16:30,751 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-29 12:16:30,751 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-29 12:16:30,751 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-29 12:16:30,751 INFO L130 BoogieDeclarations]: Found specification of procedure sep [2020-10-29 12:16:30,751 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-29 12:16:30,752 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-29 12:16:30,752 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-29 12:16:30,752 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-29 12:16:30,752 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-29 12:16:30,752 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-29 12:16:30,753 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-29 12:16:31,106 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-29 12:16:31,106 INFO L298 CfgBuilder]: Removed 3 assume(true) statements. [2020-10-29 12:16:31,109 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 12:16:31 BoogieIcfgContainer [2020-10-29 12:16:31,109 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-29 12:16:31,112 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-29 12:16:31,112 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-29 12:16:31,116 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-29 12:16:31,116 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.10 12:16:30" (1/3) ... [2020-10-29 12:16:31,117 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5da9e453 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.10 12:16:31, skipping insertion in model container [2020-10-29 12:16:31,118 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 12:16:30" (2/3) ... [2020-10-29 12:16:31,118 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5da9e453 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.10 12:16:31, skipping insertion in model container [2020-10-29 12:16:31,118 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 12:16:31" (3/3) ... [2020-10-29 12:16:31,120 INFO L111 eAbstractionObserver]: Analyzing ICFG sep60-2.i [2020-10-29 12:16:31,135 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-29 12:16:31,140 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-29 12:16:31,155 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-29 12:16:31,196 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-29 12:16:31,196 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-29 12:16:31,197 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-29 12:16:31,197 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-29 12:16:31,197 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-29 12:16:31,203 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-29 12:16:31,203 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-29 12:16:31,204 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-29 12:16:31,223 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states. [2020-10-29 12:16:31,231 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2020-10-29 12:16:31,232 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 12:16:31,233 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 12:16:31,233 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 12:16:31,241 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 12:16:31,241 INFO L82 PathProgramCache]: Analyzing trace with hash -1788891338, now seen corresponding path program 1 times [2020-10-29 12:16:31,252 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 12:16:31,252 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1771254625] [2020-10-29 12:16:31,253 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 12:16:31,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:16:31,456 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:16:31,539 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:16:31,611 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:16:31,690 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:16:31,925 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:16:32,103 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:16:32,847 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:16:32,847 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 48 [2020-10-29 12:16:32,847 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-29 12:16:32,848 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1442 [2020-10-29 12:16:32,851 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:16:32,851 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:16:32,851 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-10-29 12:16:32,851 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-10-29 12:16:32,852 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 27 [2020-10-29 12:16:32,852 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-10-29 12:16:33,146 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 12:16:33,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:16:33,152 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:16:33,156 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:16:33,156 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 12:16:33,157 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:16:33,157 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-29 12:16:33,157 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:16:33,157 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:16:33,158 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 12:16:33,158 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:16:33,158 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 12:16:33,158 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:16:33,163 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-29 12:16:33,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:16:33,168 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:16:33,172 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:16:33,203 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:16:33,203 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-29 12:16:33,203 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 12:16:33,204 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 35 [2020-10-29 12:16:33,204 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:16:33,204 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:16:33,204 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 12:16:33,204 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:16:33,205 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 12:16:33,205 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:16:33,288 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-10-29 12:16:33,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:16:33,295 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:16:33,301 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:16:33,334 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:16:33,334 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-29 12:16:33,334 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 12:16:33,335 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 40 [2020-10-29 12:16:33,335 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:16:33,335 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:16:33,335 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-29 12:16:33,335 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:16:33,336 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-29 12:16:33,336 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:16:33,391 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-10-29 12:16:33,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:16:33,396 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:16:33,400 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:16:33,425 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:16:33,425 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-29 12:16:33,425 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 12:16:33,425 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 29 [2020-10-29 12:16:33,426 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:16:33,426 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:16:33,426 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-29 12:16:33,426 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:16:33,427 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-29 12:16:33,427 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 12:16:33,440 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2020-10-29 12:16:33,441 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1771254625] [2020-10-29 12:16:33,443 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 12:16:33,443 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-10-29 12:16:33,444 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1401284275] [2020-10-29 12:16:33,449 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-29 12:16:33,450 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 12:16:33,464 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-29 12:16:33,465 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=109, Unknown=0, NotChecked=0, Total=132 [2020-10-29 12:16:33,467 INFO L87 Difference]: Start difference. First operand 36 states. Second operand 12 states. [2020-10-29 12:16:33,976 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 12:16:33,976 INFO L93 Difference]: Finished difference Result 90 states and 135 transitions. [2020-10-29 12:16:33,977 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-29 12:16:33,978 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 34 [2020-10-29 12:16:33,979 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 12:16:33,989 INFO L225 Difference]: With dead ends: 90 [2020-10-29 12:16:33,989 INFO L226 Difference]: Without dead ends: 52 [2020-10-29 12:16:33,993 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 8 SyntacticMatches, 1 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=48, Invalid=224, Unknown=0, NotChecked=0, Total=272 [2020-10-29 12:16:34,010 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states. [2020-10-29 12:16:34,041 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 40. [2020-10-29 12:16:34,042 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 40 states. [2020-10-29 12:16:34,044 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 52 transitions. [2020-10-29 12:16:34,046 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 52 transitions. Word has length 34 [2020-10-29 12:16:34,047 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 12:16:34,047 INFO L481 AbstractCegarLoop]: Abstraction has 40 states and 52 transitions. [2020-10-29 12:16:34,047 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-29 12:16:34,047 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 52 transitions. [2020-10-29 12:16:34,050 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2020-10-29 12:16:34,050 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 12:16:34,051 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 12:16:34,051 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-29 12:16:34,051 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 12:16:34,052 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 12:16:34,052 INFO L82 PathProgramCache]: Analyzing trace with hash 857111420, now seen corresponding path program 1 times [2020-10-29 12:16:34,052 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 12:16:34,053 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2086947641] [2020-10-29 12:16:34,053 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 12:16:34,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:16:34,085 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:16:34,098 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:16:34,119 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:16:34,136 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:16:34,229 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:16:35,686 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:16:35,687 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 51 [2020-10-29 12:16:35,687 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-29 12:16:35,687 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1607 [2020-10-29 12:16:35,688 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:16:35,688 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:16:35,688 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-29 12:16:35,688 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-10-29 12:16:35,688 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-29 12:16:35,689 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 12:16:35,730 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 12:16:35,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:16:35,735 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:16:35,739 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:16:35,739 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 12:16:35,740 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:16:35,740 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-29 12:16:35,741 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:16:35,741 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:16:35,741 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 12:16:35,741 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:16:35,742 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 12:16:35,742 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 12:16:35,744 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-29 12:16:35,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:16:35,757 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:16:35,782 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:16:35,782 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-10-29 12:16:35,783 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:16:35,783 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 28 [2020-10-29 12:16:35,783 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:16:35,783 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:16:35,783 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-29 12:16:35,784 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-29 12:16:35,784 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-29 12:16:35,784 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 12:16:35,810 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2020-10-29 12:16:35,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:16:35,816 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:16:35,819 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:16:35,826 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:16:35,826 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-29 12:16:35,826 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 12:16:35,826 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-29 12:16:35,827 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:16:35,827 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:16:35,827 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 12:16:35,827 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-29 12:16:35,827 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 12:16:35,828 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:16:35,829 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2020-10-29 12:16:35,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:16:35,841 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:16:35,843 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:16:35,852 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:16:35,852 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-29 12:16:35,852 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 12:16:35,853 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-29 12:16:35,853 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:16:35,853 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:16:35,853 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 12:16:35,853 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-29 12:16:35,854 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 12:16:35,854 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 12:16:35,859 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2020-10-29 12:16:35,860 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2086947641] [2020-10-29 12:16:35,860 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 12:16:35,860 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-29 12:16:35,861 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [450943647] [2020-10-29 12:16:35,863 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-29 12:16:35,863 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 12:16:35,864 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-29 12:16:35,866 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-29 12:16:35,866 INFO L87 Difference]: Start difference. First operand 40 states and 52 transitions. Second operand 5 states. [2020-10-29 12:16:36,011 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 12:16:36,012 INFO L93 Difference]: Finished difference Result 66 states and 90 transitions. [2020-10-29 12:16:36,012 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-29 12:16:36,012 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 37 [2020-10-29 12:16:36,013 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 12:16:36,014 INFO L225 Difference]: With dead ends: 66 [2020-10-29 12:16:36,014 INFO L226 Difference]: Without dead ends: 35 [2020-10-29 12:16:36,015 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-10-29 12:16:36,016 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2020-10-29 12:16:36,021 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 33. [2020-10-29 12:16:36,022 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33 states. [2020-10-29 12:16:36,023 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 39 transitions. [2020-10-29 12:16:36,023 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 39 transitions. Word has length 37 [2020-10-29 12:16:36,024 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 12:16:36,024 INFO L481 AbstractCegarLoop]: Abstraction has 33 states and 39 transitions. [2020-10-29 12:16:36,024 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-29 12:16:36,024 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 39 transitions. [2020-10-29 12:16:36,025 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2020-10-29 12:16:36,026 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 12:16:36,026 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 12:16:36,026 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-29 12:16:36,026 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 12:16:36,027 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 12:16:36,027 INFO L82 PathProgramCache]: Analyzing trace with hash 811940529, now seen corresponding path program 2 times [2020-10-29 12:16:36,027 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 12:16:36,027 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [578263504] [2020-10-29 12:16:36,028 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 12:16:36,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:16:36,041 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:16:36,058 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:16:36,080 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:16:36,100 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:16:37,227 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:16:41,046 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:16:41,046 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 66 [2020-10-29 12:16:41,046 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-29 12:16:41,047 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5007 [2020-10-29 12:16:41,047 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:16:41,047 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:16:41,047 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 12:16:41,048 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-10-29 12:16:41,048 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-29 12:16:41,048 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 12:16:41,092 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 12:16:41,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:16:41,100 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:16:41,118 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:16:41,118 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 12:16:41,119 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:16:41,119 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-10-29 12:16:41,119 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:16:41,120 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:16:41,123 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 12:16:41,124 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:16:41,124 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 12:16:41,124 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-10-29 12:16:41,131 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-29 12:16:41,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:16:41,148 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:16:41,196 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:16:41,196 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-10-29 12:16:41,197 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:16:41,197 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 52 [2020-10-29 12:16:41,197 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:16:41,197 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:16:41,198 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 12:16:41,198 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-29 12:16:41,198 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-29 12:16:41,198 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 12:16:41,225 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2020-10-29 12:16:41,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:16:41,236 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:16:41,242 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:16:41,302 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:16:41,303 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-10-29 12:16:41,303 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 12:16:41,303 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 70 [2020-10-29 12:16:41,304 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:16:41,304 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:16:41,304 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 12:16:41,304 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-29 12:16:41,305 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-29 12:16:41,305 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 12:16:41,311 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2020-10-29 12:16:41,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:16:41,321 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:16:41,327 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:16:41,385 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:16:41,385 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-10-29 12:16:41,386 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 12:16:41,386 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 67 [2020-10-29 12:16:41,386 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:16:41,386 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:16:41,386 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 12:16:41,387 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-29 12:16:41,387 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-29 12:16:41,387 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 12:16:41,398 INFO L134 CoverageAnalysis]: Checked inductivity of 78 backedges. 15 proven. 30 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2020-10-29 12:16:41,398 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [578263504] [2020-10-29 12:16:41,399 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 12:16:41,399 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-29 12:16:41,399 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1325254788] [2020-10-29 12:16:41,400 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-29 12:16:41,400 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 12:16:41,400 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-29 12:16:41,400 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-10-29 12:16:41,401 INFO L87 Difference]: Start difference. First operand 33 states and 39 transitions. Second operand 6 states. [2020-10-29 12:16:41,573 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 12:16:41,573 INFO L93 Difference]: Finished difference Result 62 states and 78 transitions. [2020-10-29 12:16:41,574 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-29 12:16:41,574 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 52 [2020-10-29 12:16:41,574 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 12:16:41,575 INFO L225 Difference]: With dead ends: 62 [2020-10-29 12:16:41,575 INFO L226 Difference]: Without dead ends: 38 [2020-10-29 12:16:41,576 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2020-10-29 12:16:41,577 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2020-10-29 12:16:41,582 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 36. [2020-10-29 12:16:41,582 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2020-10-29 12:16:41,584 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 43 transitions. [2020-10-29 12:16:41,584 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 43 transitions. Word has length 52 [2020-10-29 12:16:41,584 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 12:16:41,584 INFO L481 AbstractCegarLoop]: Abstraction has 36 states and 43 transitions. [2020-10-29 12:16:41,584 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-29 12:16:41,584 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 43 transitions. [2020-10-29 12:16:41,586 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2020-10-29 12:16:41,586 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 12:16:41,587 INFO L422 BasicCegarLoop]: trace histogram [9, 9, 9, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 12:16:41,587 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-29 12:16:41,587 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 12:16:41,587 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 12:16:41,588 INFO L82 PathProgramCache]: Analyzing trace with hash -610286718, now seen corresponding path program 3 times [2020-10-29 12:16:41,588 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 12:16:41,588 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1712725862] [2020-10-29 12:16:41,588 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 12:16:41,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:16:41,602 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:16:41,621 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:16:41,648 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:16:41,674 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:16:43,890 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:16:46,602 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:16:46,602 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 75 [2020-10-29 12:16:46,603 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-29 12:16:46,603 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5003 [2020-10-29 12:16:46,603 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:16:46,607 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:16:46,608 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-29 12:16:46,608 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-10-29 12:16:46,608 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-29 12:16:46,608 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 5 [2020-10-29 12:16:46,645 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 12:16:46,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:16:46,654 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:16:46,661 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:16:46,661 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 12:16:46,662 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:16:46,664 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-29 12:16:46,665 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:16:46,666 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:16:46,666 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 12:16:46,666 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:16:46,666 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 12:16:46,667 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 12:16:46,669 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-29 12:16:46,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:16:46,681 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:16:46,738 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:16:46,738 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 19 [2020-10-29 12:16:46,739 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:16:46,739 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 60 [2020-10-29 12:16:46,739 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:16:46,739 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:16:46,739 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-29 12:16:46,740 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-29 12:16:46,740 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-29 12:16:46,740 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:16:46,773 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-10-29 12:16:46,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:16:46,784 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:16:46,790 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:16:46,870 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:16:46,870 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 19 [2020-10-29 12:16:46,870 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 12:16:46,871 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 89 [2020-10-29 12:16:46,871 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:16:46,872 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:16:46,872 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-29 12:16:46,872 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-29 12:16:46,872 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-29 12:16:46,872 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:16:46,880 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2020-10-29 12:16:46,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:16:46,888 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:16:46,895 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:16:46,978 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:16:46,979 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 19 [2020-10-29 12:16:46,979 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 12:16:46,979 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 93 [2020-10-29 12:16:46,979 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:16:46,979 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:16:46,980 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-29 12:16:46,980 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-29 12:16:46,980 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-29 12:16:46,980 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:16:46,996 INFO L134 CoverageAnalysis]: Checked inductivity of 150 backedges. 36 proven. 72 refuted. 0 times theorem prover too weak. 42 trivial. 0 not checked. [2020-10-29 12:16:46,997 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1712725862] [2020-10-29 12:16:46,997 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 12:16:46,997 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-29 12:16:46,997 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [977699236] [2020-10-29 12:16:46,999 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-29 12:16:46,999 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 12:16:47,000 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-29 12:16:47,000 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-10-29 12:16:47,000 INFO L87 Difference]: Start difference. First operand 36 states and 43 transitions. Second operand 7 states. [2020-10-29 12:16:47,258 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 12:16:47,258 INFO L93 Difference]: Finished difference Result 68 states and 86 transitions. [2020-10-29 12:16:47,259 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-29 12:16:47,259 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 61 [2020-10-29 12:16:47,259 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 12:16:47,260 INFO L225 Difference]: With dead ends: 68 [2020-10-29 12:16:47,261 INFO L226 Difference]: Without dead ends: 41 [2020-10-29 12:16:47,262 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=45, Invalid=65, Unknown=0, NotChecked=0, Total=110 [2020-10-29 12:16:47,265 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41 states. [2020-10-29 12:16:47,274 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 39. [2020-10-29 12:16:47,274 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39 states. [2020-10-29 12:16:47,278 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 47 transitions. [2020-10-29 12:16:47,278 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 47 transitions. Word has length 61 [2020-10-29 12:16:47,278 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 12:16:47,279 INFO L481 AbstractCegarLoop]: Abstraction has 39 states and 47 transitions. [2020-10-29 12:16:47,279 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-29 12:16:47,279 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 47 transitions. [2020-10-29 12:16:47,283 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2020-10-29 12:16:47,284 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 12:16:47,284 INFO L422 BasicCegarLoop]: trace histogram [12, 12, 12, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 12:16:47,287 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-29 12:16:47,288 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 12:16:47,288 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 12:16:47,288 INFO L82 PathProgramCache]: Analyzing trace with hash -1355680303, now seen corresponding path program 4 times [2020-10-29 12:16:47,289 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 12:16:47,289 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2073363588] [2020-10-29 12:16:47,289 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 12:16:47,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:16:47,307 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:16:47,332 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:16:47,362 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:16:47,392 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:16:51,366 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:16:52,337 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:16:52,337 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 84 [2020-10-29 12:16:52,338 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-29 12:16:52,338 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5033 [2020-10-29 12:16:52,339 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:16:52,340 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:16:52,340 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-29 12:16:52,340 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 60 [2020-10-29 12:16:52,340 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-29 12:16:52,341 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-29 12:16:52,384 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 12:16:52,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:16:52,389 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:16:52,392 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:16:52,392 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 12:16:52,393 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:16:52,393 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 12:16:52,393 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:16:52,393 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:16:52,394 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 12:16:52,394 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:16:52,394 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 12:16:52,394 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:16:52,396 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-29 12:16:52,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:16:52,403 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:16:52,408 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:16:52,517 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:16:52,517 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-29 12:16:52,517 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 12:16:52,518 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 114 [2020-10-29 12:16:52,518 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:16:52,518 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:16:52,518 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-29 12:16:52,518 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-29 12:16:52,518 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-29 12:16:52,521 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-29 12:16:52,572 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2020-10-29 12:16:52,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:16:52,575 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:16:52,584 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:16:52,688 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:16:52,688 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-29 12:16:52,688 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 12:16:52,689 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 113 [2020-10-29 12:16:52,689 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:16:52,689 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:16:52,689 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-29 12:16:52,689 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-29 12:16:52,689 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-29 12:16:52,689 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:16:52,701 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2020-10-29 12:16:52,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:16:52,713 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:16:52,792 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:16:52,792 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-29 12:16:52,792 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:16:52,792 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 82 [2020-10-29 12:16:52,792 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:16:52,793 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:16:52,793 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-29 12:16:52,793 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-29 12:16:52,793 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-29 12:16:52,793 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:16:52,811 INFO L134 CoverageAnalysis]: Checked inductivity of 249 backedges. 66 proven. 132 refuted. 0 times theorem prover too weak. 51 trivial. 0 not checked. [2020-10-29 12:16:52,812 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2073363588] [2020-10-29 12:16:52,813 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 12:16:52,813 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-29 12:16:52,813 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [436631188] [2020-10-29 12:16:52,815 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-29 12:16:52,815 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 12:16:52,815 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-29 12:16:52,816 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-10-29 12:16:52,816 INFO L87 Difference]: Start difference. First operand 39 states and 47 transitions. Second operand 8 states. [2020-10-29 12:16:53,087 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 12:16:53,087 INFO L93 Difference]: Finished difference Result 74 states and 94 transitions. [2020-10-29 12:16:53,087 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-29 12:16:53,087 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 70 [2020-10-29 12:16:53,088 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 12:16:53,089 INFO L225 Difference]: With dead ends: 74 [2020-10-29 12:16:53,089 INFO L226 Difference]: Without dead ends: 44 [2020-10-29 12:16:53,090 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=63, Invalid=93, Unknown=0, NotChecked=0, Total=156 [2020-10-29 12:16:53,090 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2020-10-29 12:16:53,096 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 42. [2020-10-29 12:16:53,096 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 42 states. [2020-10-29 12:16:53,097 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 51 transitions. [2020-10-29 12:16:53,097 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 51 transitions. Word has length 70 [2020-10-29 12:16:53,097 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 12:16:53,098 INFO L481 AbstractCegarLoop]: Abstraction has 42 states and 51 transitions. [2020-10-29 12:16:53,098 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-29 12:16:53,098 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 51 transitions. [2020-10-29 12:16:53,099 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2020-10-29 12:16:53,099 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 12:16:53,099 INFO L422 BasicCegarLoop]: trace histogram [15, 15, 15, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 12:16:53,099 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-29 12:16:53,099 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 12:16:53,100 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 12:16:53,100 INFO L82 PathProgramCache]: Analyzing trace with hash 999380322, now seen corresponding path program 5 times [2020-10-29 12:16:53,100 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 12:16:53,101 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [901710814] [2020-10-29 12:16:53,101 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 12:16:53,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:16:53,114 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:16:53,136 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:16:53,166 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:16:53,196 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:16:58,148 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:16:58,149 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 93 [2020-10-29 12:16:58,149 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-29 12:16:58,149 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5037 [2020-10-29 12:16:58,149 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:16:58,149 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:16:58,149 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-29 12:16:58,150 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-10-29 12:16:58,150 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-10-29 12:16:58,150 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:16:58,187 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 12:16:58,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:16:58,191 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:16:58,195 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:16:58,195 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 12:16:58,196 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:16:58,196 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-29 12:16:58,196 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:16:58,196 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:16:58,196 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 12:16:58,196 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:16:58,197 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 12:16:58,197 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:16:58,199 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-29 12:16:58,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:16:58,215 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:16:58,335 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:16:58,336 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-10-29 12:16:58,336 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:16:58,336 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 125 [2020-10-29 12:16:58,336 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:16:58,336 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:16:58,336 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-29 12:16:58,337 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-29 12:16:58,337 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-10-29 12:16:58,337 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:16:58,414 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-10-29 12:16:58,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:16:58,424 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:16:58,432 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:16:58,570 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:16:58,570 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-10-29 12:16:58,570 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 12:16:58,573 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 149 [2020-10-29 12:16:58,573 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:16:58,574 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:16:58,574 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-29 12:16:58,574 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-29 12:16:58,574 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-10-29 12:16:58,574 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:16:58,589 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2020-10-29 12:16:58,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:16:58,600 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:16:58,608 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:16:58,739 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:16:58,739 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-10-29 12:16:58,740 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 12:16:58,740 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 143 [2020-10-29 12:16:58,740 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:16:58,740 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:16:58,740 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-29 12:16:58,740 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-29 12:16:58,741 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-10-29 12:16:58,741 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:16:58,765 INFO L134 CoverageAnalysis]: Checked inductivity of 375 backedges. 105 proven. 210 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2020-10-29 12:16:58,765 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [901710814] [2020-10-29 12:16:58,766 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 12:16:58,767 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-10-29 12:16:58,767 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1978154233] [2020-10-29 12:16:58,769 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-29 12:16:58,770 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 12:16:58,771 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-29 12:16:58,771 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2020-10-29 12:16:58,771 INFO L87 Difference]: Start difference. First operand 42 states and 51 transitions. Second operand 9 states. [2020-10-29 12:16:59,048 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 12:16:59,048 INFO L93 Difference]: Finished difference Result 80 states and 102 transitions. [2020-10-29 12:16:59,049 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-29 12:16:59,049 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 79 [2020-10-29 12:16:59,049 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 12:16:59,050 INFO L225 Difference]: With dead ends: 80 [2020-10-29 12:16:59,050 INFO L226 Difference]: Without dead ends: 47 [2020-10-29 12:16:59,051 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=84, Invalid=126, Unknown=0, NotChecked=0, Total=210 [2020-10-29 12:16:59,051 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states. [2020-10-29 12:16:59,057 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 45. [2020-10-29 12:16:59,057 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 45 states. [2020-10-29 12:16:59,058 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 55 transitions. [2020-10-29 12:16:59,058 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 55 transitions. Word has length 79 [2020-10-29 12:16:59,058 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 12:16:59,059 INFO L481 AbstractCegarLoop]: Abstraction has 45 states and 55 transitions. [2020-10-29 12:16:59,059 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-29 12:16:59,059 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 55 transitions. [2020-10-29 12:16:59,060 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2020-10-29 12:16:59,060 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 12:16:59,060 INFO L422 BasicCegarLoop]: trace histogram [18, 18, 18, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 12:16:59,060 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-29 12:16:59,061 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 12:16:59,061 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 12:16:59,061 INFO L82 PathProgramCache]: Analyzing trace with hash 241232113, now seen corresponding path program 6 times [2020-10-29 12:16:59,062 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 12:16:59,062 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [203772536] [2020-10-29 12:16:59,062 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 12:16:59,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:16:59,074 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:16:59,096 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:16:59,128 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:16:59,159 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:17:04,110 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:17:04,110 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 102 [2020-10-29 12:17:04,110 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-29 12:17:04,110 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5037 [2020-10-29 12:17:04,110 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:17:04,111 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:17:04,111 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-29 12:17:04,111 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-10-29 12:17:04,111 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-10-29 12:17:04,111 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:17:04,150 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 12:17:04,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:17:04,153 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:17:04,155 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:17:04,156 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 12:17:04,156 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:17:04,156 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 12:17:04,156 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:17:04,156 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:17:04,157 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 12:17:04,157 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:17:04,157 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 12:17:04,157 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:17:04,160 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-29 12:17:04,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:17:04,175 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:17:04,294 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:17:04,295 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 28 [2020-10-29 12:17:04,295 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:17:04,295 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 123 [2020-10-29 12:17:04,295 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:17:04,295 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:17:04,295 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-29 12:17:04,296 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-29 12:17:04,296 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-10-29 12:17:04,296 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:17:04,359 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-10-29 12:17:04,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:17:04,371 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:17:04,379 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:17:04,557 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:17:04,557 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 28 [2020-10-29 12:17:04,557 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 12:17:04,558 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 190 [2020-10-29 12:17:04,558 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:17:04,558 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:17:04,558 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-29 12:17:04,558 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-29 12:17:04,558 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-10-29 12:17:04,559 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:17:04,572 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2020-10-29 12:17:04,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:17:04,584 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:17:04,593 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:17:04,771 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:17:04,771 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 28 [2020-10-29 12:17:04,771 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 12:17:04,771 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 191 [2020-10-29 12:17:04,771 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:17:04,772 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:17:04,772 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-29 12:17:04,772 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-29 12:17:04,772 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-10-29 12:17:04,772 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:17:04,796 INFO L134 CoverageAnalysis]: Checked inductivity of 528 backedges. 153 proven. 306 refuted. 0 times theorem prover too weak. 69 trivial. 0 not checked. [2020-10-29 12:17:04,797 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [203772536] [2020-10-29 12:17:04,797 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 12:17:04,797 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-10-29 12:17:04,797 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1818214302] [2020-10-29 12:17:04,798 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-29 12:17:04,799 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 12:17:04,799 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-29 12:17:04,800 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2020-10-29 12:17:04,801 INFO L87 Difference]: Start difference. First operand 45 states and 55 transitions. Second operand 10 states. [2020-10-29 12:17:05,188 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 12:17:05,188 INFO L93 Difference]: Finished difference Result 86 states and 110 transitions. [2020-10-29 12:17:05,190 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-29 12:17:05,190 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 88 [2020-10-29 12:17:05,191 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 12:17:05,192 INFO L225 Difference]: With dead ends: 86 [2020-10-29 12:17:05,192 INFO L226 Difference]: Without dead ends: 50 [2020-10-29 12:17:05,193 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=108, Invalid=164, Unknown=0, NotChecked=0, Total=272 [2020-10-29 12:17:05,196 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states. [2020-10-29 12:17:05,205 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 48. [2020-10-29 12:17:05,205 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 48 states. [2020-10-29 12:17:05,208 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 59 transitions. [2020-10-29 12:17:05,208 INFO L78 Accepts]: Start accepts. Automaton has 48 states and 59 transitions. Word has length 88 [2020-10-29 12:17:05,208 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 12:17:05,209 INFO L481 AbstractCegarLoop]: Abstraction has 48 states and 59 transitions. [2020-10-29 12:17:05,209 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-29 12:17:05,209 INFO L276 IsEmpty]: Start isEmpty. Operand 48 states and 59 transitions. [2020-10-29 12:17:05,210 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2020-10-29 12:17:05,210 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 12:17:05,210 INFO L422 BasicCegarLoop]: trace histogram [21, 21, 21, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 12:17:05,210 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-29 12:17:05,210 INFO L429 AbstractCegarLoop]: === Iteration 8 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 12:17:05,211 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 12:17:05,211 INFO L82 PathProgramCache]: Analyzing trace with hash 66465602, now seen corresponding path program 7 times [2020-10-29 12:17:05,211 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 12:17:05,211 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1573518378] [2020-10-29 12:17:05,211 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 12:17:05,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:17:05,224 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:17:05,244 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:17:05,273 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:17:05,305 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:17:10,242 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:17:10,242 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-29 12:17:10,242 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-29 12:17:10,242 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5019 [2020-10-29 12:17:10,243 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:17:10,243 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:17:10,243 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-29 12:17:10,243 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-10-29 12:17:10,243 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-10-29 12:17:10,243 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:17:10,281 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 12:17:10,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:17:10,284 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:17:10,286 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:17:10,286 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 12:17:10,287 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:17:10,287 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 12:17:10,287 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:17:10,287 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:17:10,287 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 12:17:10,288 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:17:10,288 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 12:17:10,288 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:17:10,290 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-29 12:17:10,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:17:10,305 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:17:10,445 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:17:10,446 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 31 [2020-10-29 12:17:10,446 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:17:10,446 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 145 [2020-10-29 12:17:10,446 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:17:10,446 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:17:10,446 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-29 12:17:10,446 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-29 12:17:10,446 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-10-29 12:17:10,446 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:17:10,537 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2020-10-29 12:17:10,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:17:10,552 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:17:10,561 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:17:10,743 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:17:10,743 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 31 [2020-10-29 12:17:10,744 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 12:17:10,744 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 198 [2020-10-29 12:17:10,744 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:17:10,744 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:17:10,744 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-29 12:17:10,744 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-29 12:17:10,744 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-10-29 12:17:10,757 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 12 [2020-10-29 12:17:10,768 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2020-10-29 12:17:10,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:17:10,778 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:17:10,785 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:17:10,928 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:17:10,928 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 31 [2020-10-29 12:17:10,928 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 12:17:10,928 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 153 [2020-10-29 12:17:10,928 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:17:10,929 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:17:10,929 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-29 12:17:10,929 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-29 12:17:10,929 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-10-29 12:17:10,929 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:17:10,951 INFO L134 CoverageAnalysis]: Checked inductivity of 708 backedges. 210 proven. 420 refuted. 0 times theorem prover too weak. 78 trivial. 0 not checked. [2020-10-29 12:17:10,952 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1573518378] [2020-10-29 12:17:10,952 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 12:17:10,952 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-10-29 12:17:10,952 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1996438722] [2020-10-29 12:17:10,953 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-29 12:17:10,953 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 12:17:10,953 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-29 12:17:10,954 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-10-29 12:17:10,954 INFO L87 Difference]: Start difference. First operand 48 states and 59 transitions. Second operand 11 states. [2020-10-29 12:17:11,466 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 12:17:11,466 INFO L93 Difference]: Finished difference Result 92 states and 118 transitions. [2020-10-29 12:17:11,467 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-29 12:17:11,467 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 97 [2020-10-29 12:17:11,468 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 12:17:11,470 INFO L225 Difference]: With dead ends: 92 [2020-10-29 12:17:11,470 INFO L226 Difference]: Without dead ends: 53 [2020-10-29 12:17:11,471 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=135, Invalid=207, Unknown=0, NotChecked=0, Total=342 [2020-10-29 12:17:11,472 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53 states. [2020-10-29 12:17:11,477 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53 to 51. [2020-10-29 12:17:11,478 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 51 states. [2020-10-29 12:17:11,478 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 63 transitions. [2020-10-29 12:17:11,478 INFO L78 Accepts]: Start accepts. Automaton has 51 states and 63 transitions. Word has length 97 [2020-10-29 12:17:11,479 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 12:17:11,479 INFO L481 AbstractCegarLoop]: Abstraction has 51 states and 63 transitions. [2020-10-29 12:17:11,479 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-29 12:17:11,479 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 63 transitions. [2020-10-29 12:17:11,480 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2020-10-29 12:17:11,480 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 12:17:11,480 INFO L422 BasicCegarLoop]: trace histogram [24, 24, 24, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 12:17:11,480 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-29 12:17:11,480 INFO L429 AbstractCegarLoop]: === Iteration 9 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 12:17:11,481 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 12:17:11,481 INFO L82 PathProgramCache]: Analyzing trace with hash 1849431057, now seen corresponding path program 8 times [2020-10-29 12:17:11,481 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 12:17:11,482 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1732082946] [2020-10-29 12:17:11,482 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 12:17:11,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:17:11,494 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:17:11,514 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:17:11,541 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:17:11,566 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:17:16,522 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:17:16,522 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 120 [2020-10-29 12:17:16,522 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-29 12:17:16,522 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5030 [2020-10-29 12:17:16,522 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:17:16,522 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:17:16,523 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-29 12:17:16,523 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 49 [2020-10-29 12:17:16,523 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-10-29 12:17:16,523 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:17:16,557 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 12:17:16,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:17:16,560 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:17:16,562 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:17:16,563 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 12:17:16,563 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:17:16,563 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 12:17:16,563 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:17:16,563 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:17:16,563 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 12:17:16,564 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:17:16,564 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 12:17:16,564 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:17:16,566 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-29 12:17:16,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:17:16,569 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:17:16,577 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:17:16,810 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:17:16,810 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-10-29 12:17:16,810 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 12:17:16,811 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 241 [2020-10-29 12:17:16,811 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:17:16,811 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:17:16,811 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-29 12:17:16,811 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-29 12:17:16,811 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-10-29 12:17:16,811 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:17:16,930 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-10-29 12:17:16,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:17:16,944 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:17:17,071 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:17:17,071 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-10-29 12:17:17,071 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:17:17,071 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 132 [2020-10-29 12:17:17,071 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:17:17,072 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:17:17,072 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-29 12:17:17,072 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-29 12:17:17,072 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-10-29 12:17:17,072 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:17:17,081 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2020-10-29 12:17:17,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:17:17,093 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:17:17,100 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:17:17,267 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:17:17,267 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-10-29 12:17:17,267 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 12:17:17,267 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 177 [2020-10-29 12:17:17,267 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:17:17,267 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:17:17,268 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-29 12:17:17,268 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-29 12:17:17,268 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-10-29 12:17:17,268 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:17:17,290 INFO L134 CoverageAnalysis]: Checked inductivity of 915 backedges. 276 proven. 552 refuted. 0 times theorem prover too weak. 87 trivial. 0 not checked. [2020-10-29 12:17:17,291 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1732082946] [2020-10-29 12:17:17,291 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 12:17:17,291 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-10-29 12:17:17,291 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [976417482] [2020-10-29 12:17:17,292 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-29 12:17:17,292 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 12:17:17,293 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-29 12:17:17,293 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=75, Unknown=0, NotChecked=0, Total=132 [2020-10-29 12:17:17,293 INFO L87 Difference]: Start difference. First operand 51 states and 63 transitions. Second operand 12 states. [2020-10-29 12:17:17,809 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 12:17:17,809 INFO L93 Difference]: Finished difference Result 98 states and 126 transitions. [2020-10-29 12:17:17,810 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-29 12:17:17,810 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 106 [2020-10-29 12:17:17,811 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 12:17:17,811 INFO L225 Difference]: With dead ends: 98 [2020-10-29 12:17:17,812 INFO L226 Difference]: Without dead ends: 56 [2020-10-29 12:17:17,813 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=165, Invalid=255, Unknown=0, NotChecked=0, Total=420 [2020-10-29 12:17:17,814 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56 states. [2020-10-29 12:17:17,820 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56 to 54. [2020-10-29 12:17:17,820 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 54 states. [2020-10-29 12:17:17,821 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 67 transitions. [2020-10-29 12:17:17,821 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 67 transitions. Word has length 106 [2020-10-29 12:17:17,821 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 12:17:17,821 INFO L481 AbstractCegarLoop]: Abstraction has 54 states and 67 transitions. [2020-10-29 12:17:17,821 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-29 12:17:17,821 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 67 transitions. [2020-10-29 12:17:17,822 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2020-10-29 12:17:17,822 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 12:17:17,823 INFO L422 BasicCegarLoop]: trace histogram [27, 27, 27, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 12:17:17,823 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-29 12:17:17,823 INFO L429 AbstractCegarLoop]: === Iteration 10 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 12:17:17,823 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 12:17:17,823 INFO L82 PathProgramCache]: Analyzing trace with hash 1560564002, now seen corresponding path program 9 times [2020-10-29 12:17:17,824 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 12:17:17,824 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [894971330] [2020-10-29 12:17:17,824 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 12:17:17,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:17:17,837 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:17:17,856 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:17:17,896 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:17:17,972 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:17:22,858 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:17:22,858 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 129 [2020-10-29 12:17:22,858 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-29 12:17:22,858 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5023 [2020-10-29 12:17:22,858 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:17:22,858 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:17:22,859 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-29 12:17:22,859 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-10-29 12:17:22,859 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 29 [2020-10-29 12:17:22,859 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:17:22,892 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 12:17:22,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:17:22,895 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:17:22,897 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:17:22,897 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 12:17:22,897 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:17:22,897 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 12:17:22,898 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:17:22,898 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:17:22,898 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 12:17:22,898 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:17:22,898 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 12:17:22,898 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:17:22,900 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-29 12:17:22,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:17:22,913 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:17:23,064 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:17:23,064 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 37 [2020-10-29 12:17:23,065 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:17:23,065 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 156 [2020-10-29 12:17:23,065 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:17:23,065 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:17:23,065 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-29 12:17:23,065 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-29 12:17:23,065 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 29 [2020-10-29 12:17:23,065 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:17:23,195 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2020-10-29 12:17:23,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:17:23,211 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:17:23,222 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:17:23,455 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:17:23,455 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 37 [2020-10-29 12:17:23,455 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 12:17:23,456 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 250 [2020-10-29 12:17:23,456 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:17:23,456 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:17:23,456 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-29 12:17:23,456 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-29 12:17:23,456 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 29 [2020-10-29 12:17:23,456 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:17:23,466 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2020-10-29 12:17:23,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:17:23,484 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:17:23,495 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:17:23,694 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:17:23,694 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 37 [2020-10-29 12:17:23,694 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 12:17:23,694 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 215 [2020-10-29 12:17:23,694 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:17:23,694 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:17:23,694 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-29 12:17:23,694 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-29 12:17:23,695 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 29 [2020-10-29 12:17:23,695 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:17:23,723 INFO L134 CoverageAnalysis]: Checked inductivity of 1149 backedges. 351 proven. 702 refuted. 0 times theorem prover too weak. 96 trivial. 0 not checked. [2020-10-29 12:17:23,724 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [894971330] [2020-10-29 12:17:23,724 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 12:17:23,724 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-10-29 12:17:23,725 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1810813898] [2020-10-29 12:17:23,725 INFO L461 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-29 12:17:23,725 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 12:17:23,726 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-29 12:17:23,726 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=88, Unknown=0, NotChecked=0, Total=156 [2020-10-29 12:17:23,726 INFO L87 Difference]: Start difference. First operand 54 states and 67 transitions. Second operand 13 states. [2020-10-29 12:17:24,407 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 12:17:24,407 INFO L93 Difference]: Finished difference Result 104 states and 134 transitions. [2020-10-29 12:17:24,408 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-29 12:17:24,408 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 115 [2020-10-29 12:17:24,408 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 12:17:24,411 INFO L225 Difference]: With dead ends: 104 [2020-10-29 12:17:24,411 INFO L226 Difference]: Without dead ends: 59 [2020-10-29 12:17:24,412 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=198, Invalid=308, Unknown=0, NotChecked=0, Total=506 [2020-10-29 12:17:24,413 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59 states. [2020-10-29 12:17:24,421 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59 to 57. [2020-10-29 12:17:24,421 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 57 states. [2020-10-29 12:17:24,421 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57 states to 57 states and 71 transitions. [2020-10-29 12:17:24,422 INFO L78 Accepts]: Start accepts. Automaton has 57 states and 71 transitions. Word has length 115 [2020-10-29 12:17:24,424 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 12:17:24,424 INFO L481 AbstractCegarLoop]: Abstraction has 57 states and 71 transitions. [2020-10-29 12:17:24,424 INFO L482 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-29 12:17:24,425 INFO L276 IsEmpty]: Start isEmpty. Operand 57 states and 71 transitions. [2020-10-29 12:17:24,429 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2020-10-29 12:17:24,430 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 12:17:24,430 INFO L422 BasicCegarLoop]: trace histogram [30, 30, 30, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 12:17:24,430 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-29 12:17:24,430 INFO L429 AbstractCegarLoop]: === Iteration 11 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 12:17:24,431 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 12:17:24,431 INFO L82 PathProgramCache]: Analyzing trace with hash -1903331535, now seen corresponding path program 10 times [2020-10-29 12:17:24,431 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 12:17:24,431 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1858256574] [2020-10-29 12:17:24,431 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 12:17:24,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:17:24,448 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:17:24,467 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:17:24,506 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:17:24,549 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:17:29,464 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:17:29,464 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 138 [2020-10-29 12:17:29,464 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-29 12:17:29,464 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5017 [2020-10-29 12:17:29,465 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:17:29,465 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:17:29,465 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-29 12:17:29,465 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-10-29 12:17:29,465 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 32 [2020-10-29 12:17:29,465 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:17:29,499 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 12:17:29,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:17:29,502 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:17:29,504 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:17:29,505 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 12:17:29,505 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:17:29,505 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 12:17:29,505 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:17:29,505 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:17:29,505 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 12:17:29,505 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:17:29,506 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 12:17:29,506 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:17:29,508 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-29 12:17:29,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:17:29,524 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:17:29,710 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:17:29,710 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 40 [2020-10-29 12:17:29,710 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:17:29,710 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 192 [2020-10-29 12:17:29,710 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:17:29,711 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:17:29,711 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-29 12:17:29,711 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-29 12:17:29,711 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 32 [2020-10-29 12:17:29,711 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:17:29,855 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-10-29 12:17:29,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:17:29,870 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:17:29,880 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:17:30,131 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:17:30,131 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 40 [2020-10-29 12:17:30,131 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 12:17:30,131 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 266 [2020-10-29 12:17:30,131 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:17:30,132 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:17:30,132 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-29 12:17:30,132 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-29 12:17:30,132 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 32 [2020-10-29 12:17:30,132 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:17:30,144 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-10-29 12:17:30,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:17:30,160 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:17:30,173 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:17:30,496 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:17:30,496 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 40 [2020-10-29 12:17:30,496 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 12:17:30,497 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 342 [2020-10-29 12:17:30,497 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:17:30,497 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:17:30,497 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-29 12:17:30,497 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-29 12:17:30,497 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 32 [2020-10-29 12:17:30,497 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:17:30,521 INFO L134 CoverageAnalysis]: Checked inductivity of 1410 backedges. 435 proven. 870 refuted. 0 times theorem prover too weak. 105 trivial. 0 not checked. [2020-10-29 12:17:30,521 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1858256574] [2020-10-29 12:17:30,521 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 12:17:30,521 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2020-10-29 12:17:30,521 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [348668768] [2020-10-29 12:17:30,522 INFO L461 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-10-29 12:17:30,522 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 12:17:30,523 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-10-29 12:17:30,523 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=80, Invalid=102, Unknown=0, NotChecked=0, Total=182 [2020-10-29 12:17:30,523 INFO L87 Difference]: Start difference. First operand 57 states and 71 transitions. Second operand 14 states. [2020-10-29 12:17:31,150 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 12:17:31,150 INFO L93 Difference]: Finished difference Result 110 states and 142 transitions. [2020-10-29 12:17:31,151 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-10-29 12:17:31,151 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 124 [2020-10-29 12:17:31,151 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 12:17:31,153 INFO L225 Difference]: With dead ends: 110 [2020-10-29 12:17:31,154 INFO L226 Difference]: Without dead ends: 62 [2020-10-29 12:17:31,155 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 55 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=234, Invalid=366, Unknown=0, NotChecked=0, Total=600 [2020-10-29 12:17:31,155 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62 states. [2020-10-29 12:17:31,167 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62 to 60. [2020-10-29 12:17:31,168 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 60 states. [2020-10-29 12:17:31,172 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60 states to 60 states and 75 transitions. [2020-10-29 12:17:31,173 INFO L78 Accepts]: Start accepts. Automaton has 60 states and 75 transitions. Word has length 124 [2020-10-29 12:17:31,173 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 12:17:31,173 INFO L481 AbstractCegarLoop]: Abstraction has 60 states and 75 transitions. [2020-10-29 12:17:31,173 INFO L482 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-10-29 12:17:31,173 INFO L276 IsEmpty]: Start isEmpty. Operand 60 states and 75 transitions. [2020-10-29 12:17:31,175 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 134 [2020-10-29 12:17:31,175 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 12:17:31,175 INFO L422 BasicCegarLoop]: trace histogram [33, 33, 33, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 12:17:31,176 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-29 12:17:31,176 INFO L429 AbstractCegarLoop]: === Iteration 12 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 12:17:31,177 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 12:17:31,177 INFO L82 PathProgramCache]: Analyzing trace with hash 527547138, now seen corresponding path program 11 times [2020-10-29 12:17:31,177 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 12:17:31,177 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1976067967] [2020-10-29 12:17:31,177 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 12:17:31,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:17:31,192 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:17:31,216 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:17:31,244 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:17:31,273 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:17:36,198 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:17:36,198 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 147 [2020-10-29 12:17:36,198 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-29 12:17:36,198 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5008 [2020-10-29 12:17:36,199 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:17:36,199 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:17:36,199 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-10-29 12:17:36,199 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-10-29 12:17:36,199 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 35 [2020-10-29 12:17:36,199 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:17:36,230 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 12:17:36,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:17:36,232 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:17:36,234 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:17:36,234 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 12:17:36,234 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:17:36,235 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 12:17:36,235 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:17:36,235 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:17:36,235 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 12:17:36,235 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:17:36,235 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 12:17:36,235 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:17:36,237 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-29 12:17:36,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:17:36,255 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:17:36,697 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:17:36,697 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 43 [2020-10-29 12:17:36,697 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:17:36,697 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 449 [2020-10-29 12:17:36,698 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:17:36,698 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:17:36,698 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-10-29 12:17:36,698 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-29 12:17:36,699 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 35 [2020-10-29 12:17:36,699 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 12:17:36,860 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2020-10-29 12:17:36,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:17:36,876 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:17:36,890 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:17:37,327 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:17:37,327 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 43 [2020-10-29 12:17:37,327 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 12:17:37,327 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 458 [2020-10-29 12:17:37,328 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:17:37,328 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:17:37,328 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-10-29 12:17:37,328 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-29 12:17:37,328 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 35 [2020-10-29 12:17:37,328 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:17:37,342 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-10-29 12:17:37,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:17:37,361 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:17:37,375 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:17:37,876 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:17:37,877 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 43 [2020-10-29 12:17:37,877 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 12:17:37,877 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 522 [2020-10-29 12:17:37,877 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:17:37,877 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:17:37,877 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-10-29 12:17:37,877 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-29 12:17:37,878 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 35 [2020-10-29 12:17:37,878 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:17:37,904 INFO L134 CoverageAnalysis]: Checked inductivity of 1698 backedges. 528 proven. 1056 refuted. 0 times theorem prover too weak. 114 trivial. 0 not checked. [2020-10-29 12:17:37,905 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1976067967] [2020-10-29 12:17:37,905 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 12:17:37,905 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2020-10-29 12:17:37,905 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [603771071] [2020-10-29 12:17:37,906 INFO L461 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-29 12:17:37,906 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 12:17:37,906 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-29 12:17:37,907 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=93, Invalid=117, Unknown=0, NotChecked=0, Total=210 [2020-10-29 12:17:37,907 INFO L87 Difference]: Start difference. First operand 60 states and 75 transitions. Second operand 15 states. [2020-10-29 12:17:38,610 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 12:17:38,610 INFO L93 Difference]: Finished difference Result 116 states and 150 transitions. [2020-10-29 12:17:38,611 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-29 12:17:38,611 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 133 [2020-10-29 12:17:38,611 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 12:17:38,612 INFO L225 Difference]: With dead ends: 116 [2020-10-29 12:17:38,612 INFO L226 Difference]: Without dead ends: 65 [2020-10-29 12:17:38,614 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 33 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 66 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=273, Invalid=429, Unknown=0, NotChecked=0, Total=702 [2020-10-29 12:17:38,614 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 65 states. [2020-10-29 12:17:38,620 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 65 to 63. [2020-10-29 12:17:38,620 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 63 states. [2020-10-29 12:17:38,621 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63 states to 63 states and 79 transitions. [2020-10-29 12:17:38,621 INFO L78 Accepts]: Start accepts. Automaton has 63 states and 79 transitions. Word has length 133 [2020-10-29 12:17:38,621 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 12:17:38,621 INFO L481 AbstractCegarLoop]: Abstraction has 63 states and 79 transitions. [2020-10-29 12:17:38,621 INFO L482 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-29 12:17:38,621 INFO L276 IsEmpty]: Start isEmpty. Operand 63 states and 79 transitions. [2020-10-29 12:17:38,623 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2020-10-29 12:17:38,623 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 12:17:38,623 INFO L422 BasicCegarLoop]: trace histogram [36, 36, 36, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 12:17:38,623 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-29 12:17:38,623 INFO L429 AbstractCegarLoop]: === Iteration 13 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 12:17:38,624 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 12:17:38,624 INFO L82 PathProgramCache]: Analyzing trace with hash 1855918673, now seen corresponding path program 12 times [2020-10-29 12:17:38,624 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 12:17:38,624 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1005884952] [2020-10-29 12:17:38,624 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 12:17:38,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:17:38,638 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:17:38,667 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:17:38,699 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:17:38,729 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:17:43,639 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:17:43,640 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 156 [2020-10-29 12:17:43,640 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-29 12:17:43,640 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5004 [2020-10-29 12:17:43,640 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:17:43,640 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:17:43,640 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-10-29 12:17:43,640 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 61 [2020-10-29 12:17:43,640 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 38 [2020-10-29 12:17:43,640 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:17:43,686 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 12:17:43,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:17:43,689 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:17:43,693 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:17:43,693 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 12:17:43,693 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:17:43,693 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 12:17:43,694 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:17:43,694 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:17:43,694 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 12:17:43,694 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:17:43,694 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 12:17:43,694 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:17:43,696 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-29 12:17:43,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:17:43,699 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:17:43,708 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:17:44,285 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:17:44,286 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 46 [2020-10-29 12:17:44,286 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 12:17:44,286 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 586 [2020-10-29 12:17:44,286 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:17:44,286 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:17:44,286 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-10-29 12:17:44,287 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-29 12:17:44,287 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 38 [2020-10-29 12:17:44,287 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:17:44,453 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2020-10-29 12:17:44,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:17:44,481 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:17:44,744 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:17:44,744 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 46 [2020-10-29 12:17:44,744 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:17:44,744 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 273 [2020-10-29 12:17:44,744 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:17:44,745 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:17:44,745 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-10-29 12:17:44,745 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-29 12:17:44,745 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 38 [2020-10-29 12:17:44,745 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:17:44,758 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-10-29 12:17:44,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:17:44,772 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:17:44,781 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:17:45,116 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:17:45,117 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 46 [2020-10-29 12:17:45,117 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 12:17:45,117 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 349 [2020-10-29 12:17:45,117 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:17:45,117 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:17:45,117 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-10-29 12:17:45,117 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-29 12:17:45,117 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 38 [2020-10-29 12:17:45,117 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:17:45,153 INFO L134 CoverageAnalysis]: Checked inductivity of 2013 backedges. 630 proven. 1260 refuted. 0 times theorem prover too weak. 123 trivial. 0 not checked. [2020-10-29 12:17:45,153 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1005884952] [2020-10-29 12:17:45,154 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 12:17:45,154 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2020-10-29 12:17:45,154 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1559513402] [2020-10-29 12:17:45,154 INFO L461 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-10-29 12:17:45,155 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 12:17:45,155 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-10-29 12:17:45,156 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=107, Invalid=133, Unknown=0, NotChecked=0, Total=240 [2020-10-29 12:17:45,156 INFO L87 Difference]: Start difference. First operand 63 states and 79 transitions. Second operand 16 states. [2020-10-29 12:17:45,862 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 12:17:45,863 INFO L93 Difference]: Finished difference Result 122 states and 158 transitions. [2020-10-29 12:17:45,863 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-10-29 12:17:45,863 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 142 [2020-10-29 12:17:45,863 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 12:17:45,864 INFO L225 Difference]: With dead ends: 122 [2020-10-29 12:17:45,864 INFO L226 Difference]: Without dead ends: 68 [2020-10-29 12:17:45,866 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 78 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=315, Invalid=497, Unknown=0, NotChecked=0, Total=812 [2020-10-29 12:17:45,866 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68 states. [2020-10-29 12:17:45,876 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68 to 66. [2020-10-29 12:17:45,876 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 66 states. [2020-10-29 12:17:45,877 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66 states to 66 states and 83 transitions. [2020-10-29 12:17:45,877 INFO L78 Accepts]: Start accepts. Automaton has 66 states and 83 transitions. Word has length 142 [2020-10-29 12:17:45,877 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 12:17:45,877 INFO L481 AbstractCegarLoop]: Abstraction has 66 states and 83 transitions. [2020-10-29 12:17:45,878 INFO L482 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-10-29 12:17:45,878 INFO L276 IsEmpty]: Start isEmpty. Operand 66 states and 83 transitions. [2020-10-29 12:17:45,879 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 152 [2020-10-29 12:17:45,879 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 12:17:45,879 INFO L422 BasicCegarLoop]: trace histogram [39, 39, 39, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 12:17:45,880 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-29 12:17:45,880 INFO L429 AbstractCegarLoop]: === Iteration 14 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 12:17:45,880 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 12:17:45,881 INFO L82 PathProgramCache]: Analyzing trace with hash 880045282, now seen corresponding path program 13 times [2020-10-29 12:17:45,881 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 12:17:45,882 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2021427492] [2020-10-29 12:17:45,882 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 12:17:45,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:17:45,913 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:17:45,943 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:17:45,986 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:17:46,070 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:17:50,942 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:17:50,942 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 165 [2020-10-29 12:17:50,942 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-29 12:17:50,942 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5038 [2020-10-29 12:17:50,942 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:17:50,942 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:17:50,942 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-10-29 12:17:50,943 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 64 [2020-10-29 12:17:50,943 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 41 [2020-10-29 12:17:50,943 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:17:50,983 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 12:17:50,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:17:50,986 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:17:50,988 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:17:50,988 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 12:17:50,988 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:17:50,988 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 12:17:50,988 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:17:50,988 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:17:50,988 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 12:17:50,988 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:17:50,988 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 12:17:50,988 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:17:50,990 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-29 12:17:50,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:17:50,993 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:17:51,001 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:17:51,432 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:17:51,432 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 49 [2020-10-29 12:17:51,432 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 12:17:51,433 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 439 [2020-10-29 12:17:51,433 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:17:51,433 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:17:51,433 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-10-29 12:17:51,433 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-29 12:17:51,433 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 41 [2020-10-29 12:17:51,433 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:17:51,635 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2020-10-29 12:17:51,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:17:51,653 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:17:51,964 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:17:51,965 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 49 [2020-10-29 12:17:51,965 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:17:51,965 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 316 [2020-10-29 12:17:51,965 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:17:51,965 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:17:51,965 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-10-29 12:17:51,965 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-29 12:17:51,965 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 41 [2020-10-29 12:17:51,965 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:17:51,976 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2020-10-29 12:17:51,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:17:51,996 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:17:52,243 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:17:52,401 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:17:52,401 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 49 [2020-10-29 12:17:52,401 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 12:17:52,402 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 413 [2020-10-29 12:17:52,402 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:17:52,402 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:17:52,402 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-10-29 12:17:52,402 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-29 12:17:52,402 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 41 [2020-10-29 12:17:52,402 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:17:52,429 INFO L134 CoverageAnalysis]: Checked inductivity of 2355 backedges. 741 proven. 1482 refuted. 0 times theorem prover too weak. 132 trivial. 0 not checked. [2020-10-29 12:17:52,429 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2021427492] [2020-10-29 12:17:52,430 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 12:17:52,430 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17] total 17 [2020-10-29 12:17:52,430 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1585339068] [2020-10-29 12:17:52,430 INFO L461 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-29 12:17:52,431 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 12:17:52,431 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-29 12:17:52,431 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=122, Invalid=150, Unknown=0, NotChecked=0, Total=272 [2020-10-29 12:17:52,431 INFO L87 Difference]: Start difference. First operand 66 states and 83 transitions. Second operand 17 states. [2020-10-29 12:17:53,182 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 12:17:53,182 INFO L93 Difference]: Finished difference Result 128 states and 166 transitions. [2020-10-29 12:17:53,182 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-10-29 12:17:53,182 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 151 [2020-10-29 12:17:53,183 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 12:17:53,184 INFO L225 Difference]: With dead ends: 128 [2020-10-29 12:17:53,184 INFO L226 Difference]: Without dead ends: 71 [2020-10-29 12:17:53,186 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 37 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 91 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=360, Invalid=570, Unknown=0, NotChecked=0, Total=930 [2020-10-29 12:17:53,186 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 71 states. [2020-10-29 12:17:53,191 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 71 to 69. [2020-10-29 12:17:53,191 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 69 states. [2020-10-29 12:17:53,192 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69 states to 69 states and 87 transitions. [2020-10-29 12:17:53,192 INFO L78 Accepts]: Start accepts. Automaton has 69 states and 87 transitions. Word has length 151 [2020-10-29 12:17:53,192 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 12:17:53,193 INFO L481 AbstractCegarLoop]: Abstraction has 69 states and 87 transitions. [2020-10-29 12:17:53,193 INFO L482 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-29 12:17:53,193 INFO L276 IsEmpty]: Start isEmpty. Operand 69 states and 87 transitions. [2020-10-29 12:17:53,194 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 161 [2020-10-29 12:17:53,194 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 12:17:53,195 INFO L422 BasicCegarLoop]: trace histogram [42, 42, 42, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 12:17:53,195 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-10-29 12:17:53,195 INFO L429 AbstractCegarLoop]: === Iteration 15 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 12:17:53,195 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 12:17:53,195 INFO L82 PathProgramCache]: Analyzing trace with hash -314907279, now seen corresponding path program 14 times [2020-10-29 12:17:53,196 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 12:17:53,196 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [273488843] [2020-10-29 12:17:53,196 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 12:17:53,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:17:53,214 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:17:53,246 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:17:53,281 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:17:53,339 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:17:58,221 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:17:58,221 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 174 [2020-10-29 12:17:58,221 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-29 12:17:58,221 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5009 [2020-10-29 12:17:58,221 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:17:58,221 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:17:58,221 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 16 [2020-10-29 12:17:58,221 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-10-29 12:17:58,221 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 44 [2020-10-29 12:17:58,221 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:17:58,255 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 12:17:58,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:17:58,258 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:17:58,260 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:17:58,260 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 12:17:58,260 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:17:58,260 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 12:17:58,261 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:17:58,261 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:17:58,261 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 12:17:58,261 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:17:58,261 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 12:17:58,261 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:17:58,263 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-29 12:17:58,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:17:58,282 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:17:58,614 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:17:58,614 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 52 [2020-10-29 12:17:58,615 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:17:58,615 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 340 [2020-10-29 12:17:58,615 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:17:58,615 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:17:58,615 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 16 [2020-10-29 12:17:58,615 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-29 12:17:58,615 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 44 [2020-10-29 12:17:58,615 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:17:58,845 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2020-10-29 12:17:58,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:17:58,862 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:17:58,875 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:17:59,347 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:17:59,347 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 52 [2020-10-29 12:17:59,347 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 12:17:59,347 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 490 [2020-10-29 12:17:59,347 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:17:59,347 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:17:59,347 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 16 [2020-10-29 12:17:59,347 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-29 12:17:59,347 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 44 [2020-10-29 12:17:59,348 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:17:59,359 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2020-10-29 12:17:59,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:17:59,373 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:17:59,385 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:17:59,828 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:17:59,829 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 52 [2020-10-29 12:17:59,829 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 12:17:59,829 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 461 [2020-10-29 12:17:59,829 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:17:59,829 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:17:59,829 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 16 [2020-10-29 12:17:59,829 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-29 12:17:59,829 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 44 [2020-10-29 12:17:59,829 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:17:59,863 INFO L134 CoverageAnalysis]: Checked inductivity of 2724 backedges. 861 proven. 1722 refuted. 0 times theorem prover too weak. 141 trivial. 0 not checked. [2020-10-29 12:17:59,863 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [273488843] [2020-10-29 12:17:59,863 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 12:17:59,863 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18] total 18 [2020-10-29 12:17:59,863 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1177805697] [2020-10-29 12:17:59,864 INFO L461 AbstractCegarLoop]: Interpolant automaton has 18 states [2020-10-29 12:17:59,864 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 12:17:59,864 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2020-10-29 12:17:59,864 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=138, Invalid=168, Unknown=0, NotChecked=0, Total=306 [2020-10-29 12:17:59,865 INFO L87 Difference]: Start difference. First operand 69 states and 87 transitions. Second operand 18 states. [2020-10-29 12:18:00,723 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 12:18:00,723 INFO L93 Difference]: Finished difference Result 134 states and 174 transitions. [2020-10-29 12:18:00,723 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-10-29 12:18:00,724 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 160 [2020-10-29 12:18:00,724 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 12:18:00,725 INFO L225 Difference]: With dead ends: 134 [2020-10-29 12:18:00,725 INFO L226 Difference]: Without dead ends: 74 [2020-10-29 12:18:00,727 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 70 GetRequests, 39 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 105 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=408, Invalid=648, Unknown=0, NotChecked=0, Total=1056 [2020-10-29 12:18:00,727 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 74 states. [2020-10-29 12:18:00,732 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 74 to 72. [2020-10-29 12:18:00,732 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 72 states. [2020-10-29 12:18:00,733 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 72 states to 72 states and 91 transitions. [2020-10-29 12:18:00,733 INFO L78 Accepts]: Start accepts. Automaton has 72 states and 91 transitions. Word has length 160 [2020-10-29 12:18:00,734 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 12:18:00,734 INFO L481 AbstractCegarLoop]: Abstraction has 72 states and 91 transitions. [2020-10-29 12:18:00,734 INFO L482 AbstractCegarLoop]: Interpolant automaton has 18 states. [2020-10-29 12:18:00,734 INFO L276 IsEmpty]: Start isEmpty. Operand 72 states and 91 transitions. [2020-10-29 12:18:00,736 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 170 [2020-10-29 12:18:00,736 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 12:18:00,736 INFO L422 BasicCegarLoop]: trace histogram [45, 45, 45, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 12:18:00,736 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-10-29 12:18:00,736 INFO L429 AbstractCegarLoop]: === Iteration 16 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 12:18:00,737 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 12:18:00,737 INFO L82 PathProgramCache]: Analyzing trace with hash -171809086, now seen corresponding path program 15 times [2020-10-29 12:18:00,737 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 12:18:00,737 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1583303025] [2020-10-29 12:18:00,737 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 12:18:00,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:18:00,752 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:18:00,789 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:18:00,829 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:18:00,871 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:18:05,788 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:18:05,788 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 183 [2020-10-29 12:18:05,788 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-29 12:18:05,788 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5038 [2020-10-29 12:18:05,788 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:18:05,789 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:18:05,789 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 17 [2020-10-29 12:18:05,789 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 70 [2020-10-29 12:18:05,789 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 47 [2020-10-29 12:18:05,789 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:18:05,826 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 12:18:05,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:18:05,828 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:18:05,830 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:18:05,831 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 12:18:05,831 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:18:05,831 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 12:18:05,831 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:18:05,831 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:18:05,831 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 12:18:05,831 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:18:05,831 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 12:18:05,831 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:18:05,833 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-29 12:18:05,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:18:05,836 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:18:05,843 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:18:06,408 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:18:06,408 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 55 [2020-10-29 12:18:06,408 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 12:18:06,408 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 572 [2020-10-29 12:18:06,409 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:18:06,409 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:18:06,409 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 17 [2020-10-29 12:18:06,409 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-29 12:18:06,409 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 47 [2020-10-29 12:18:06,409 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:18:06,664 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2020-10-29 12:18:06,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:18:06,680 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:18:07,075 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:18:07,076 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 55 [2020-10-29 12:18:07,076 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:18:07,076 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 401 [2020-10-29 12:18:07,076 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:18:07,076 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:18:07,076 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 17 [2020-10-29 12:18:07,076 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-29 12:18:07,076 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 47 [2020-10-29 12:18:07,076 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:18:07,092 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2020-10-29 12:18:07,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:18:07,115 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:18:07,132 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:18:07,727 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:18:07,727 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 55 [2020-10-29 12:18:07,727 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 12:18:07,728 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 621 [2020-10-29 12:18:07,728 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:18:07,728 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:18:07,728 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 17 [2020-10-29 12:18:07,728 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-29 12:18:07,728 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 47 [2020-10-29 12:18:07,728 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:18:07,763 INFO L134 CoverageAnalysis]: Checked inductivity of 3120 backedges. 990 proven. 1980 refuted. 0 times theorem prover too weak. 150 trivial. 0 not checked. [2020-10-29 12:18:07,763 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1583303025] [2020-10-29 12:18:07,764 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 12:18:07,764 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19] total 19 [2020-10-29 12:18:07,764 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [831743234] [2020-10-29 12:18:07,764 INFO L461 AbstractCegarLoop]: Interpolant automaton has 19 states [2020-10-29 12:18:07,764 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 12:18:07,765 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2020-10-29 12:18:07,765 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=155, Invalid=187, Unknown=0, NotChecked=0, Total=342 [2020-10-29 12:18:07,765 INFO L87 Difference]: Start difference. First operand 72 states and 91 transitions. Second operand 19 states. [2020-10-29 12:18:08,646 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 12:18:08,646 INFO L93 Difference]: Finished difference Result 140 states and 182 transitions. [2020-10-29 12:18:08,647 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-10-29 12:18:08,647 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 169 [2020-10-29 12:18:08,648 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 12:18:08,648 INFO L225 Difference]: With dead ends: 140 [2020-10-29 12:18:08,648 INFO L226 Difference]: Without dead ends: 77 [2020-10-29 12:18:08,649 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 74 GetRequests, 41 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 120 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=459, Invalid=731, Unknown=0, NotChecked=0, Total=1190 [2020-10-29 12:18:08,650 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 77 states. [2020-10-29 12:18:08,655 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 77 to 75. [2020-10-29 12:18:08,655 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 75 states. [2020-10-29 12:18:08,656 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75 states to 75 states and 95 transitions. [2020-10-29 12:18:08,656 INFO L78 Accepts]: Start accepts. Automaton has 75 states and 95 transitions. Word has length 169 [2020-10-29 12:18:08,656 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 12:18:08,656 INFO L481 AbstractCegarLoop]: Abstraction has 75 states and 95 transitions. [2020-10-29 12:18:08,656 INFO L482 AbstractCegarLoop]: Interpolant automaton has 19 states. [2020-10-29 12:18:08,657 INFO L276 IsEmpty]: Start isEmpty. Operand 75 states and 95 transitions. [2020-10-29 12:18:08,658 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 179 [2020-10-29 12:18:08,658 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 12:18:08,658 INFO L422 BasicCegarLoop]: trace histogram [48, 48, 48, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 12:18:08,658 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-10-29 12:18:08,658 INFO L429 AbstractCegarLoop]: === Iteration 17 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 12:18:08,659 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 12:18:08,659 INFO L82 PathProgramCache]: Analyzing trace with hash 1756033169, now seen corresponding path program 16 times [2020-10-29 12:18:08,659 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 12:18:08,659 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1409152576] [2020-10-29 12:18:08,659 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 12:18:08,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:18:08,674 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:18:08,707 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:18:08,786 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:18:08,860 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:18:13,742 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:18:13,743 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 192 [2020-10-29 12:18:13,743 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-29 12:18:13,743 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5070 [2020-10-29 12:18:13,743 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:18:13,743 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:18:13,743 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 18 [2020-10-29 12:18:13,743 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 73 [2020-10-29 12:18:13,743 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 50 [2020-10-29 12:18:13,743 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:18:13,777 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 12:18:13,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:18:13,780 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:18:13,781 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:18:13,781 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 12:18:13,781 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:18:13,781 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-29 12:18:13,781 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:18:13,781 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:18:13,782 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 12:18:13,782 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:18:13,782 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 12:18:13,782 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:18:13,783 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-29 12:18:13,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:18:13,786 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:18:13,800 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:18:14,444 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:18:14,444 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 58 [2020-10-29 12:18:14,444 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 12:18:14,444 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 658 [2020-10-29 12:18:14,444 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:18:14,445 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:18:14,445 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 18 [2020-10-29 12:18:14,445 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-29 12:18:14,445 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 50 [2020-10-29 12:18:14,445 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:18:14,736 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2020-10-29 12:18:14,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:18:14,754 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:18:15,254 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:18:15,255 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 58 [2020-10-29 12:18:15,255 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:18:15,255 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 507 [2020-10-29 12:18:15,255 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:18:15,255 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:18:15,255 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 18 [2020-10-29 12:18:15,255 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-29 12:18:15,255 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 50 [2020-10-29 12:18:15,255 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:18:15,270 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2020-10-29 12:18:15,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:18:15,288 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:18:15,300 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:18:15,983 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:18:15,984 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 58 [2020-10-29 12:18:15,984 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 12:18:15,984 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 702 [2020-10-29 12:18:15,984 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:18:15,984 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:18:15,984 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 18 [2020-10-29 12:18:15,984 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-29 12:18:15,984 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 50 [2020-10-29 12:18:15,984 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:18:16,037 INFO L134 CoverageAnalysis]: Checked inductivity of 3543 backedges. 1128 proven. 2256 refuted. 0 times theorem prover too weak. 159 trivial. 0 not checked. [2020-10-29 12:18:16,037 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1409152576] [2020-10-29 12:18:16,037 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 12:18:16,038 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20] total 20 [2020-10-29 12:18:16,038 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1861443244] [2020-10-29 12:18:16,038 INFO L461 AbstractCegarLoop]: Interpolant automaton has 20 states [2020-10-29 12:18:16,038 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 12:18:16,039 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2020-10-29 12:18:16,039 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=173, Invalid=207, Unknown=0, NotChecked=0, Total=380 [2020-10-29 12:18:16,039 INFO L87 Difference]: Start difference. First operand 75 states and 95 transitions. Second operand 20 states. [2020-10-29 12:18:16,968 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 12:18:16,968 INFO L93 Difference]: Finished difference Result 146 states and 190 transitions. [2020-10-29 12:18:16,968 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2020-10-29 12:18:16,968 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 178 [2020-10-29 12:18:16,969 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 12:18:16,969 INFO L225 Difference]: With dead ends: 146 [2020-10-29 12:18:16,970 INFO L226 Difference]: Without dead ends: 80 [2020-10-29 12:18:16,971 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 78 GetRequests, 43 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 136 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=513, Invalid=819, Unknown=0, NotChecked=0, Total=1332 [2020-10-29 12:18:16,972 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 80 states. [2020-10-29 12:18:16,977 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 80 to 78. [2020-10-29 12:18:16,977 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 78 states. [2020-10-29 12:18:16,978 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 78 states to 78 states and 99 transitions. [2020-10-29 12:18:16,978 INFO L78 Accepts]: Start accepts. Automaton has 78 states and 99 transitions. Word has length 178 [2020-10-29 12:18:16,979 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 12:18:16,979 INFO L481 AbstractCegarLoop]: Abstraction has 78 states and 99 transitions. [2020-10-29 12:18:16,979 INFO L482 AbstractCegarLoop]: Interpolant automaton has 20 states. [2020-10-29 12:18:16,979 INFO L276 IsEmpty]: Start isEmpty. Operand 78 states and 99 transitions. [2020-10-29 12:18:16,980 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 188 [2020-10-29 12:18:16,980 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 12:18:16,980 INFO L422 BasicCegarLoop]: trace histogram [51, 51, 51, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 12:18:16,980 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-10-29 12:18:16,980 INFO L429 AbstractCegarLoop]: === Iteration 18 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 12:18:16,981 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 12:18:16,981 INFO L82 PathProgramCache]: Analyzing trace with hash -1919833950, now seen corresponding path program 17 times [2020-10-29 12:18:16,981 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 12:18:16,981 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1910875642] [2020-10-29 12:18:16,982 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 12:18:16,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:18:16,997 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:18:17,027 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:18:17,066 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:18:17,112 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:18:22,044 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:18:22,044 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 201 [2020-10-29 12:18:22,044 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-29 12:18:22,044 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5049 [2020-10-29 12:18:22,044 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:18:22,044 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:18:22,044 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 19 [2020-10-29 12:18:22,044 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 76 [2020-10-29 12:18:22,045 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 53 [2020-10-29 12:18:22,045 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:18:22,080 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 12:18:22,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:18:22,083 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:18:22,084 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:18:22,084 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 12:18:22,084 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:18:22,084 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-29 12:18:22,085 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:18:22,085 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:18:22,085 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 12:18:22,085 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:18:22,085 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 12:18:22,085 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:18:22,086 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-29 12:18:22,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:18:22,089 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:18:22,103 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:18:22,785 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:18:22,786 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 61 [2020-10-29 12:18:22,786 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 12:18:22,786 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 696 [2020-10-29 12:18:22,786 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:18:22,786 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:18:22,786 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 19 [2020-10-29 12:18:22,786 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-29 12:18:22,786 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 53 [2020-10-29 12:18:22,786 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:18:23,103 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2020-10-29 12:18:23,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:18:23,123 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:18:23,606 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:18:23,606 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 61 [2020-10-29 12:18:23,606 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:18:23,607 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 491 [2020-10-29 12:18:23,607 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:18:23,607 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:18:23,607 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 19 [2020-10-29 12:18:23,607 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-29 12:18:23,607 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 53 [2020-10-29 12:18:23,607 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:18:23,620 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2020-10-29 12:18:23,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:18:23,635 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:18:23,661 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:18:24,158 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:18:24,158 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 61 [2020-10-29 12:18:24,158 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 12:18:24,158 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 529 [2020-10-29 12:18:24,159 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:18:24,159 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:18:24,159 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 19 [2020-10-29 12:18:24,159 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-29 12:18:24,159 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 53 [2020-10-29 12:18:24,159 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:18:24,204 INFO L134 CoverageAnalysis]: Checked inductivity of 3993 backedges. 1275 proven. 2550 refuted. 0 times theorem prover too weak. 168 trivial. 0 not checked. [2020-10-29 12:18:24,204 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1910875642] [2020-10-29 12:18:24,204 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 12:18:24,204 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21] total 21 [2020-10-29 12:18:24,204 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [624799276] [2020-10-29 12:18:24,205 INFO L461 AbstractCegarLoop]: Interpolant automaton has 21 states [2020-10-29 12:18:24,205 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 12:18:24,206 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2020-10-29 12:18:24,206 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=192, Invalid=228, Unknown=0, NotChecked=0, Total=420 [2020-10-29 12:18:24,206 INFO L87 Difference]: Start difference. First operand 78 states and 99 transitions. Second operand 21 states. [2020-10-29 12:18:25,272 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 12:18:25,272 INFO L93 Difference]: Finished difference Result 152 states and 198 transitions. [2020-10-29 12:18:25,272 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-10-29 12:18:25,273 INFO L78 Accepts]: Start accepts. Automaton has 21 states. Word has length 187 [2020-10-29 12:18:25,273 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 12:18:25,274 INFO L225 Difference]: With dead ends: 152 [2020-10-29 12:18:25,274 INFO L226 Difference]: Without dead ends: 83 [2020-10-29 12:18:25,276 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 82 GetRequests, 45 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 153 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=570, Invalid=912, Unknown=0, NotChecked=0, Total=1482 [2020-10-29 12:18:25,277 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 83 states. [2020-10-29 12:18:25,281 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 83 to 81. [2020-10-29 12:18:25,282 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 81 states. [2020-10-29 12:18:25,283 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 81 states to 81 states and 103 transitions. [2020-10-29 12:18:25,283 INFO L78 Accepts]: Start accepts. Automaton has 81 states and 103 transitions. Word has length 187 [2020-10-29 12:18:25,283 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 12:18:25,283 INFO L481 AbstractCegarLoop]: Abstraction has 81 states and 103 transitions. [2020-10-29 12:18:25,283 INFO L482 AbstractCegarLoop]: Interpolant automaton has 21 states. [2020-10-29 12:18:25,283 INFO L276 IsEmpty]: Start isEmpty. Operand 81 states and 103 transitions. [2020-10-29 12:18:25,285 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 197 [2020-10-29 12:18:25,285 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 12:18:25,285 INFO L422 BasicCegarLoop]: trace histogram [54, 54, 54, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 12:18:25,285 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2020-10-29 12:18:25,285 INFO L429 AbstractCegarLoop]: === Iteration 19 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 12:18:25,286 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 12:18:25,286 INFO L82 PathProgramCache]: Analyzing trace with hash 1589195697, now seen corresponding path program 18 times [2020-10-29 12:18:25,286 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 12:18:25,286 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2035199808] [2020-10-29 12:18:25,286 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 12:18:25,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:18:25,302 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:18:25,337 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:18:25,377 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:18:25,427 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:18:30,328 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:18:30,329 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 210 [2020-10-29 12:18:30,329 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-29 12:18:30,329 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5029 [2020-10-29 12:18:30,329 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:18:30,329 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:18:30,329 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 20 [2020-10-29 12:18:30,329 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 79 [2020-10-29 12:18:30,329 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 56 [2020-10-29 12:18:30,329 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:18:30,366 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 12:18:30,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:18:30,369 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:18:30,371 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:18:30,371 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 12:18:30,371 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:18:30,371 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 12:18:30,371 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:18:30,371 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:18:30,371 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 12:18:30,371 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:18:30,371 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 12:18:30,372 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:18:30,373 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-29 12:18:30,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:18:30,376 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:18:30,387 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:18:31,189 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:18:31,190 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 64 [2020-10-29 12:18:31,190 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 12:18:31,190 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 814 [2020-10-29 12:18:31,190 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:18:31,190 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:18:31,190 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 20 [2020-10-29 12:18:31,190 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-29 12:18:31,190 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 56 [2020-10-29 12:18:31,190 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:18:31,522 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2020-10-29 12:18:31,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:18:31,545 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:18:32,155 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:18:32,155 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 64 [2020-10-29 12:18:32,155 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:18:32,155 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 618 [2020-10-29 12:18:32,156 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:18:32,156 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:18:32,156 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 20 [2020-10-29 12:18:32,156 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-29 12:18:32,156 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 56 [2020-10-29 12:18:32,156 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:18:32,173 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2020-10-29 12:18:32,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:18:32,193 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:18:32,225 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:18:32,844 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:18:32,845 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 64 [2020-10-29 12:18:32,845 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 12:18:32,845 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 659 [2020-10-29 12:18:32,845 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:18:32,845 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:18:32,845 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 20 [2020-10-29 12:18:32,845 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-29 12:18:32,845 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 56 [2020-10-29 12:18:32,845 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:18:32,890 INFO L134 CoverageAnalysis]: Checked inductivity of 4470 backedges. 1431 proven. 2862 refuted. 0 times theorem prover too weak. 177 trivial. 0 not checked. [2020-10-29 12:18:32,891 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2035199808] [2020-10-29 12:18:32,891 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 12:18:32,891 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22] total 22 [2020-10-29 12:18:32,891 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [579920218] [2020-10-29 12:18:32,892 INFO L461 AbstractCegarLoop]: Interpolant automaton has 22 states [2020-10-29 12:18:32,893 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 12:18:32,893 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2020-10-29 12:18:32,894 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=212, Invalid=250, Unknown=0, NotChecked=0, Total=462 [2020-10-29 12:18:32,894 INFO L87 Difference]: Start difference. First operand 81 states and 103 transitions. Second operand 22 states. [2020-10-29 12:18:33,978 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 12:18:33,979 INFO L93 Difference]: Finished difference Result 158 states and 206 transitions. [2020-10-29 12:18:33,979 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2020-10-29 12:18:33,979 INFO L78 Accepts]: Start accepts. Automaton has 22 states. Word has length 196 [2020-10-29 12:18:33,979 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 12:18:33,980 INFO L225 Difference]: With dead ends: 158 [2020-10-29 12:18:33,980 INFO L226 Difference]: Without dead ends: 86 [2020-10-29 12:18:33,981 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 86 GetRequests, 47 SyntacticMatches, 0 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 171 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=630, Invalid=1010, Unknown=0, NotChecked=0, Total=1640 [2020-10-29 12:18:33,982 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 86 states. [2020-10-29 12:18:33,986 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 86 to 84. [2020-10-29 12:18:33,986 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 84 states. [2020-10-29 12:18:33,987 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 84 states to 84 states and 107 transitions. [2020-10-29 12:18:33,987 INFO L78 Accepts]: Start accepts. Automaton has 84 states and 107 transitions. Word has length 196 [2020-10-29 12:18:33,988 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 12:18:33,988 INFO L481 AbstractCegarLoop]: Abstraction has 84 states and 107 transitions. [2020-10-29 12:18:33,988 INFO L482 AbstractCegarLoop]: Interpolant automaton has 22 states. [2020-10-29 12:18:33,988 INFO L276 IsEmpty]: Start isEmpty. Operand 84 states and 107 transitions. [2020-10-29 12:18:33,989 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 206 [2020-10-29 12:18:33,990 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 12:18:33,990 INFO L422 BasicCegarLoop]: trace histogram [57, 57, 57, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 12:18:33,990 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2020-10-29 12:18:33,990 INFO L429 AbstractCegarLoop]: === Iteration 20 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 12:18:33,991 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 12:18:33,991 INFO L82 PathProgramCache]: Analyzing trace with hash 1452814978, now seen corresponding path program 19 times [2020-10-29 12:18:33,991 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 12:18:33,991 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1620918818] [2020-10-29 12:18:33,991 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 12:18:34,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:18:34,008 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:18:34,051 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:18:34,125 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:18:34,221 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:18:39,051 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:18:39,052 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 219 [2020-10-29 12:18:39,052 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-29 12:18:39,052 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5046 [2020-10-29 12:18:39,052 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:18:39,052 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:18:39,052 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 21 [2020-10-29 12:18:39,052 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-10-29 12:18:39,052 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 59 [2020-10-29 12:18:39,052 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:18:39,084 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 12:18:39,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:18:39,087 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:18:39,089 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:18:39,089 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 12:18:39,089 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:18:39,089 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 12:18:39,089 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:18:39,089 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:18:39,089 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 12:18:39,090 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:18:39,090 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 12:18:39,090 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:18:39,091 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-29 12:18:39,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:18:39,115 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:18:39,834 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:18:39,835 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 67 [2020-10-29 12:18:39,835 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:18:39,835 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 729 [2020-10-29 12:18:39,835 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:18:39,835 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:18:39,835 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 21 [2020-10-29 12:18:39,835 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-29 12:18:39,836 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 59 [2020-10-29 12:18:39,836 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:18:40,218 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2020-10-29 12:18:40,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:18:40,249 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:18:40,309 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:18:41,163 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:18:41,163 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 67 [2020-10-29 12:18:41,163 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 12:18:41,163 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 926 [2020-10-29 12:18:41,163 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:18:41,163 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:18:41,164 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 21 [2020-10-29 12:18:41,164 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-29 12:18:41,164 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 59 [2020-10-29 12:18:41,164 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:18:41,182 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 137 [2020-10-29 12:18:41,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:18:41,208 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:18:41,246 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:18:41,886 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:18:41,886 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 67 [2020-10-29 12:18:41,886 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 12:18:41,886 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 688 [2020-10-29 12:18:41,886 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:18:41,886 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:18:41,886 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 21 [2020-10-29 12:18:41,887 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-29 12:18:41,887 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 59 [2020-10-29 12:18:41,887 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:18:41,955 INFO L134 CoverageAnalysis]: Checked inductivity of 4974 backedges. 1596 proven. 3192 refuted. 0 times theorem prover too weak. 186 trivial. 0 not checked. [2020-10-29 12:18:41,955 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1620918818] [2020-10-29 12:18:41,955 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 12:18:41,955 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23] total 23 [2020-10-29 12:18:41,955 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1016063477] [2020-10-29 12:18:41,956 INFO L461 AbstractCegarLoop]: Interpolant automaton has 23 states [2020-10-29 12:18:41,956 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 12:18:41,957 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2020-10-29 12:18:41,957 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=233, Invalid=273, Unknown=0, NotChecked=0, Total=506 [2020-10-29 12:18:41,959 INFO L87 Difference]: Start difference. First operand 84 states and 107 transitions. Second operand 23 states. [2020-10-29 12:18:43,116 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 12:18:43,116 INFO L93 Difference]: Finished difference Result 164 states and 214 transitions. [2020-10-29 12:18:43,116 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2020-10-29 12:18:43,117 INFO L78 Accepts]: Start accepts. Automaton has 23 states. Word has length 205 [2020-10-29 12:18:43,117 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 12:18:43,118 INFO L225 Difference]: With dead ends: 164 [2020-10-29 12:18:43,118 INFO L226 Difference]: Without dead ends: 89 [2020-10-29 12:18:43,120 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 90 GetRequests, 49 SyntacticMatches, 0 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 190 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=693, Invalid=1113, Unknown=0, NotChecked=0, Total=1806 [2020-10-29 12:18:43,120 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 89 states. [2020-10-29 12:18:43,125 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 89 to 87. [2020-10-29 12:18:43,125 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 87 states. [2020-10-29 12:18:43,126 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 87 states to 87 states and 111 transitions. [2020-10-29 12:18:43,126 INFO L78 Accepts]: Start accepts. Automaton has 87 states and 111 transitions. Word has length 205 [2020-10-29 12:18:43,126 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 12:18:43,127 INFO L481 AbstractCegarLoop]: Abstraction has 87 states and 111 transitions. [2020-10-29 12:18:43,127 INFO L482 AbstractCegarLoop]: Interpolant automaton has 23 states. [2020-10-29 12:18:43,127 INFO L276 IsEmpty]: Start isEmpty. Operand 87 states and 111 transitions. [2020-10-29 12:18:43,128 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 215 [2020-10-29 12:18:43,128 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 12:18:43,128 INFO L422 BasicCegarLoop]: trace histogram [60, 60, 60, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 12:18:43,129 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2020-10-29 12:18:43,129 INFO L429 AbstractCegarLoop]: === Iteration 21 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 12:18:43,129 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 12:18:43,129 INFO L82 PathProgramCache]: Analyzing trace with hash 212840145, now seen corresponding path program 20 times [2020-10-29 12:18:43,129 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 12:18:43,130 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1350404762] [2020-10-29 12:18:43,130 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 12:18:43,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:18:43,146 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:18:43,185 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:18:43,235 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:18:43,289 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:18:48,159 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:18:48,159 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 228 [2020-10-29 12:18:48,159 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-29 12:18:48,159 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5015 [2020-10-29 12:18:48,159 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:18:48,160 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:18:48,160 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 22 [2020-10-29 12:18:48,160 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 85 [2020-10-29 12:18:48,160 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 62 [2020-10-29 12:18:48,160 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:18:48,209 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 12:18:48,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:18:48,211 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:18:48,214 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:18:48,214 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 12:18:48,214 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:18:48,214 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 12:18:48,214 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:18:48,214 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:18:48,214 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 12:18:48,214 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:18:48,214 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 12:18:48,214 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:18:48,216 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-29 12:18:48,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:18:48,218 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:18:48,248 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:18:49,017 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:18:49,017 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 70 [2020-10-29 12:18:49,017 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 12:18:49,018 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 799 [2020-10-29 12:18:49,018 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:18:49,018 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:18:49,018 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 22 [2020-10-29 12:18:49,018 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-29 12:18:49,018 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 62 [2020-10-29 12:18:49,018 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:18:49,442 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2020-10-29 12:18:49,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:18:49,480 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:18:50,406 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:18:50,406 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 70 [2020-10-29 12:18:50,406 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:18:50,406 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 942 [2020-10-29 12:18:50,406 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:18:50,406 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:18:50,407 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 22 [2020-10-29 12:18:50,407 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-29 12:18:50,407 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 62 [2020-10-29 12:18:50,407 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:18:50,431 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2020-10-29 12:18:50,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:18:50,458 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:18:50,507 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:18:51,369 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:18:51,369 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 70 [2020-10-29 12:18:51,369 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 12:18:51,369 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 923 [2020-10-29 12:18:51,370 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:18:51,370 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:18:51,370 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 22 [2020-10-29 12:18:51,370 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-29 12:18:51,370 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 62 [2020-10-29 12:18:51,370 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:18:51,442 INFO L134 CoverageAnalysis]: Checked inductivity of 5505 backedges. 1770 proven. 3540 refuted. 0 times theorem prover too weak. 195 trivial. 0 not checked. [2020-10-29 12:18:51,443 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1350404762] [2020-10-29 12:18:51,443 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 12:18:51,443 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24] total 24 [2020-10-29 12:18:51,443 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1865099725] [2020-10-29 12:18:51,444 INFO L461 AbstractCegarLoop]: Interpolant automaton has 24 states [2020-10-29 12:18:51,444 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 12:18:51,444 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2020-10-29 12:18:51,445 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=255, Invalid=297, Unknown=0, NotChecked=0, Total=552 [2020-10-29 12:18:51,445 INFO L87 Difference]: Start difference. First operand 87 states and 111 transitions. Second operand 24 states. [2020-10-29 12:18:52,664 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 12:18:52,664 INFO L93 Difference]: Finished difference Result 170 states and 222 transitions. [2020-10-29 12:18:52,665 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2020-10-29 12:18:52,666 INFO L78 Accepts]: Start accepts. Automaton has 24 states. Word has length 214 [2020-10-29 12:18:52,666 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 12:18:52,667 INFO L225 Difference]: With dead ends: 170 [2020-10-29 12:18:52,667 INFO L226 Difference]: Without dead ends: 92 [2020-10-29 12:18:52,669 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 94 GetRequests, 51 SyntacticMatches, 0 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 210 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=759, Invalid=1221, Unknown=0, NotChecked=0, Total=1980 [2020-10-29 12:18:52,670 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 92 states. [2020-10-29 12:18:52,675 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 92 to 90. [2020-10-29 12:18:52,675 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 90 states. [2020-10-29 12:18:52,676 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 90 states to 90 states and 115 transitions. [2020-10-29 12:18:52,676 INFO L78 Accepts]: Start accepts. Automaton has 90 states and 115 transitions. Word has length 214 [2020-10-29 12:18:52,676 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 12:18:52,676 INFO L481 AbstractCegarLoop]: Abstraction has 90 states and 115 transitions. [2020-10-29 12:18:52,677 INFO L482 AbstractCegarLoop]: Interpolant automaton has 24 states. [2020-10-29 12:18:52,677 INFO L276 IsEmpty]: Start isEmpty. Operand 90 states and 115 transitions. [2020-10-29 12:18:52,678 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 224 [2020-10-29 12:18:52,678 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 12:18:52,678 INFO L422 BasicCegarLoop]: trace histogram [63, 63, 63, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 12:18:52,678 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2020-10-29 12:18:52,679 INFO L429 AbstractCegarLoop]: === Iteration 22 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 12:18:52,679 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 12:18:52,679 INFO L82 PathProgramCache]: Analyzing trace with hash 1007420514, now seen corresponding path program 21 times [2020-10-29 12:18:52,679 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 12:18:52,679 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [823680385] [2020-10-29 12:18:52,680 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 12:18:52,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:18:52,697 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:18:52,729 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:18:52,777 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:18:52,840 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:18:57,706 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:18:57,706 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 237 [2020-10-29 12:18:57,706 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-29 12:18:57,706 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5011 [2020-10-29 12:18:57,706 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:18:57,706 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:18:57,706 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 23 [2020-10-29 12:18:57,706 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-10-29 12:18:57,707 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 65 [2020-10-29 12:18:57,707 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:18:57,737 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 12:18:57,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:18:57,740 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:18:57,741 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:18:57,741 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 12:18:57,741 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:18:57,742 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-29 12:18:57,742 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:18:57,742 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:18:57,742 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 12:18:57,742 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:18:57,742 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 12:18:57,742 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:18:57,743 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-29 12:18:57,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:18:57,764 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:18:58,554 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:18:58,554 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 73 [2020-10-29 12:18:58,554 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:18:58,555 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 798 [2020-10-29 12:18:58,555 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:18:58,555 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:18:58,555 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 23 [2020-10-29 12:18:58,555 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-29 12:18:58,555 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 65 [2020-10-29 12:18:58,555 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:18:58,996 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2020-10-29 12:18:59,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:18:59,025 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:18:59,123 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:18:59,975 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:18:59,975 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 73 [2020-10-29 12:18:59,975 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 12:18:59,975 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 962 [2020-10-29 12:18:59,975 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:18:59,975 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:18:59,975 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 23 [2020-10-29 12:18:59,976 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-29 12:18:59,976 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 65 [2020-10-29 12:18:59,976 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:18:59,994 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 149 [2020-10-29 12:19:00,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:19:00,017 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:19:00,055 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:19:00,885 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:19:00,886 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 73 [2020-10-29 12:19:00,886 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 12:19:00,886 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 878 [2020-10-29 12:19:00,886 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:19:00,886 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:19:00,886 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 23 [2020-10-29 12:19:00,886 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-29 12:19:00,886 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 65 [2020-10-29 12:19:00,886 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:19:00,941 INFO L134 CoverageAnalysis]: Checked inductivity of 6063 backedges. 1953 proven. 3906 refuted. 0 times theorem prover too weak. 204 trivial. 0 not checked. [2020-10-29 12:19:00,942 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [823680385] [2020-10-29 12:19:00,942 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 12:19:00,942 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25] total 25 [2020-10-29 12:19:00,942 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [406937868] [2020-10-29 12:19:00,942 INFO L461 AbstractCegarLoop]: Interpolant automaton has 25 states [2020-10-29 12:19:00,942 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 12:19:00,943 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2020-10-29 12:19:00,943 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=278, Invalid=322, Unknown=0, NotChecked=0, Total=600 [2020-10-29 12:19:00,943 INFO L87 Difference]: Start difference. First operand 90 states and 115 transitions. Second operand 25 states. [2020-10-29 12:19:02,297 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 12:19:02,297 INFO L93 Difference]: Finished difference Result 176 states and 230 transitions. [2020-10-29 12:19:02,301 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2020-10-29 12:19:02,301 INFO L78 Accepts]: Start accepts. Automaton has 25 states. Word has length 223 [2020-10-29 12:19:02,302 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 12:19:02,302 INFO L225 Difference]: With dead ends: 176 [2020-10-29 12:19:02,302 INFO L226 Difference]: Without dead ends: 95 [2020-10-29 12:19:02,304 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 98 GetRequests, 53 SyntacticMatches, 0 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 231 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=828, Invalid=1334, Unknown=0, NotChecked=0, Total=2162 [2020-10-29 12:19:02,304 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 95 states. [2020-10-29 12:19:02,308 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 95 to 93. [2020-10-29 12:19:02,309 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 93 states. [2020-10-29 12:19:02,310 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 93 states to 93 states and 119 transitions. [2020-10-29 12:19:02,310 INFO L78 Accepts]: Start accepts. Automaton has 93 states and 119 transitions. Word has length 223 [2020-10-29 12:19:02,310 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 12:19:02,310 INFO L481 AbstractCegarLoop]: Abstraction has 93 states and 119 transitions. [2020-10-29 12:19:02,310 INFO L482 AbstractCegarLoop]: Interpolant automaton has 25 states. [2020-10-29 12:19:02,310 INFO L276 IsEmpty]: Start isEmpty. Operand 93 states and 119 transitions. [2020-10-29 12:19:02,312 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 233 [2020-10-29 12:19:02,312 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 12:19:02,312 INFO L422 BasicCegarLoop]: trace histogram [66, 66, 66, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 12:19:02,312 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2020-10-29 12:19:02,312 INFO L429 AbstractCegarLoop]: === Iteration 23 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 12:19:02,313 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 12:19:02,313 INFO L82 PathProgramCache]: Analyzing trace with hash 257450481, now seen corresponding path program 22 times [2020-10-29 12:19:02,313 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 12:19:02,313 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1140635590] [2020-10-29 12:19:02,313 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 12:19:02,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:19:02,329 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:19:02,362 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:19:02,441 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:19:02,505 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:19:07,420 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:19:07,420 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 246 [2020-10-29 12:19:07,420 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-29 12:19:07,420 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5093 [2020-10-29 12:19:07,420 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:19:07,420 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:19:07,420 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 24 [2020-10-29 12:19:07,421 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 91 [2020-10-29 12:19:07,421 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 68 [2020-10-29 12:19:07,421 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:19:07,461 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 12:19:07,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:19:07,463 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:19:07,465 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:19:07,465 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 12:19:07,465 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:19:07,465 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-29 12:19:07,465 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:19:07,465 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:19:07,465 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 12:19:07,466 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:19:07,466 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 12:19:07,466 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:19:07,467 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-29 12:19:07,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:19:07,471 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:19:07,505 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:19:08,415 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:19:08,416 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-10-29 12:19:08,416 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 12:19:08,416 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 945 [2020-10-29 12:19:08,416 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:19:08,416 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:19:08,416 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 24 [2020-10-29 12:19:08,416 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-29 12:19:08,416 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 68 [2020-10-29 12:19:08,416 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:19:08,948 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2020-10-29 12:19:08,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:19:08,985 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:19:10,030 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:19:10,030 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-10-29 12:19:10,030 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:19:10,030 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1060 [2020-10-29 12:19:10,030 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:19:10,030 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:19:10,030 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 24 [2020-10-29 12:19:10,031 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-29 12:19:10,031 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 68 [2020-10-29 12:19:10,031 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:19:10,057 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 155 [2020-10-29 12:19:10,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:19:10,086 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:19:10,137 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:19:11,114 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:19:11,114 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-10-29 12:19:11,115 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 12:19:11,115 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1040 [2020-10-29 12:19:11,115 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:19:11,115 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:19:11,115 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 24 [2020-10-29 12:19:11,115 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-29 12:19:11,115 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 68 [2020-10-29 12:19:11,115 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:19:11,173 INFO L134 CoverageAnalysis]: Checked inductivity of 6648 backedges. 2145 proven. 4290 refuted. 0 times theorem prover too weak. 213 trivial. 0 not checked. [2020-10-29 12:19:11,173 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1140635590] [2020-10-29 12:19:11,173 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 12:19:11,174 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [26] total 26 [2020-10-29 12:19:11,174 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1878335043] [2020-10-29 12:19:11,174 INFO L461 AbstractCegarLoop]: Interpolant automaton has 26 states [2020-10-29 12:19:11,174 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 12:19:11,175 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2020-10-29 12:19:11,175 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=302, Invalid=348, Unknown=0, NotChecked=0, Total=650 [2020-10-29 12:19:11,175 INFO L87 Difference]: Start difference. First operand 93 states and 119 transitions. Second operand 26 states. [2020-10-29 12:19:12,483 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 12:19:12,484 INFO L93 Difference]: Finished difference Result 182 states and 238 transitions. [2020-10-29 12:19:12,485 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2020-10-29 12:19:12,486 INFO L78 Accepts]: Start accepts. Automaton has 26 states. Word has length 232 [2020-10-29 12:19:12,486 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 12:19:12,487 INFO L225 Difference]: With dead ends: 182 [2020-10-29 12:19:12,487 INFO L226 Difference]: Without dead ends: 98 [2020-10-29 12:19:12,489 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 102 GetRequests, 55 SyntacticMatches, 0 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 253 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=900, Invalid=1452, Unknown=0, NotChecked=0, Total=2352 [2020-10-29 12:19:12,489 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 98 states. [2020-10-29 12:19:12,495 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 98 to 96. [2020-10-29 12:19:12,496 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 96 states. [2020-10-29 12:19:12,497 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 96 states to 96 states and 123 transitions. [2020-10-29 12:19:12,497 INFO L78 Accepts]: Start accepts. Automaton has 96 states and 123 transitions. Word has length 232 [2020-10-29 12:19:12,498 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 12:19:12,498 INFO L481 AbstractCegarLoop]: Abstraction has 96 states and 123 transitions. [2020-10-29 12:19:12,498 INFO L482 AbstractCegarLoop]: Interpolant automaton has 26 states. [2020-10-29 12:19:12,498 INFO L276 IsEmpty]: Start isEmpty. Operand 96 states and 123 transitions. [2020-10-29 12:19:12,500 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 242 [2020-10-29 12:19:12,500 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 12:19:12,500 INFO L422 BasicCegarLoop]: trace histogram [69, 69, 69, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 12:19:12,501 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2020-10-29 12:19:12,501 INFO L429 AbstractCegarLoop]: === Iteration 24 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 12:19:12,501 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 12:19:12,501 INFO L82 PathProgramCache]: Analyzing trace with hash 430120514, now seen corresponding path program 23 times [2020-10-29 12:19:12,502 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 12:19:12,502 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [539488575] [2020-10-29 12:19:12,502 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 12:19:12,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:19:12,529 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:19:12,578 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:19:12,642 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:19:12,714 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:19:17,530 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:19:17,530 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 255 [2020-10-29 12:19:17,530 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-29 12:19:17,530 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5004 [2020-10-29 12:19:17,530 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:19:17,530 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:19:17,531 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 25 [2020-10-29 12:19:17,531 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 94 [2020-10-29 12:19:17,531 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 71 [2020-10-29 12:19:17,531 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:19:17,580 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 12:19:17,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:19:17,583 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:19:17,584 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:19:17,585 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 12:19:17,585 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:19:17,585 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 12:19:17,585 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:19:17,585 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:19:17,585 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 12:19:17,585 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:19:17,586 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 12:19:17,586 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:19:17,587 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-29 12:19:17,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:19:17,590 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:19:17,625 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:19:18,644 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:19:18,644 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 79 [2020-10-29 12:19:18,644 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 12:19:18,644 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1054 [2020-10-29 12:19:18,644 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:19:18,644 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:19:18,644 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 25 [2020-10-29 12:19:18,645 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-29 12:19:18,645 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 71 [2020-10-29 12:19:18,645 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:19:19,134 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-10-29 12:19:19,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:19:19,177 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:19:20,222 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:19:20,222 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 79 [2020-10-29 12:19:20,223 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:19:20,223 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1073 [2020-10-29 12:19:20,223 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:19:20,223 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:19:20,223 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 25 [2020-10-29 12:19:20,223 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-29 12:19:20,223 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 71 [2020-10-29 12:19:20,223 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:19:20,251 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 161 [2020-10-29 12:19:20,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:19:20,317 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:19:20,378 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:19:21,734 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:19:21,734 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 79 [2020-10-29 12:19:21,734 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 12:19:21,734 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1463 [2020-10-29 12:19:21,734 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:19:21,734 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:19:21,734 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 25 [2020-10-29 12:19:21,734 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-29 12:19:21,735 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 71 [2020-10-29 12:19:21,735 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:19:21,828 INFO L134 CoverageAnalysis]: Checked inductivity of 7260 backedges. 2346 proven. 4692 refuted. 0 times theorem prover too weak. 222 trivial. 0 not checked. [2020-10-29 12:19:21,829 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [539488575] [2020-10-29 12:19:21,829 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 12:19:21,829 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [27] total 27 [2020-10-29 12:19:21,829 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [256822001] [2020-10-29 12:19:21,829 INFO L461 AbstractCegarLoop]: Interpolant automaton has 27 states [2020-10-29 12:19:21,830 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 12:19:21,830 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2020-10-29 12:19:21,830 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=327, Invalid=375, Unknown=0, NotChecked=0, Total=702 [2020-10-29 12:19:21,831 INFO L87 Difference]: Start difference. First operand 96 states and 123 transitions. Second operand 27 states. [2020-10-29 12:19:23,337 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 12:19:23,337 INFO L93 Difference]: Finished difference Result 188 states and 246 transitions. [2020-10-29 12:19:23,337 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2020-10-29 12:19:23,338 INFO L78 Accepts]: Start accepts. Automaton has 27 states. Word has length 241 [2020-10-29 12:19:23,338 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 12:19:23,339 INFO L225 Difference]: With dead ends: 188 [2020-10-29 12:19:23,339 INFO L226 Difference]: Without dead ends: 101 [2020-10-29 12:19:23,341 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 106 GetRequests, 57 SyntacticMatches, 0 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 276 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=975, Invalid=1575, Unknown=0, NotChecked=0, Total=2550 [2020-10-29 12:19:23,341 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 101 states. [2020-10-29 12:19:23,346 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 101 to 99. [2020-10-29 12:19:23,346 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 99 states. [2020-10-29 12:19:23,347 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 99 states to 99 states and 127 transitions. [2020-10-29 12:19:23,347 INFO L78 Accepts]: Start accepts. Automaton has 99 states and 127 transitions. Word has length 241 [2020-10-29 12:19:23,347 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 12:19:23,348 INFO L481 AbstractCegarLoop]: Abstraction has 99 states and 127 transitions. [2020-10-29 12:19:23,348 INFO L482 AbstractCegarLoop]: Interpolant automaton has 27 states. [2020-10-29 12:19:23,348 INFO L276 IsEmpty]: Start isEmpty. Operand 99 states and 127 transitions. [2020-10-29 12:19:23,349 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 251 [2020-10-29 12:19:23,349 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 12:19:23,349 INFO L422 BasicCegarLoop]: trace histogram [72, 72, 72, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 12:19:23,349 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2020-10-29 12:19:23,349 INFO L429 AbstractCegarLoop]: === Iteration 25 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 12:19:23,350 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 12:19:23,350 INFO L82 PathProgramCache]: Analyzing trace with hash 50154769, now seen corresponding path program 24 times [2020-10-29 12:19:23,350 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 12:19:23,350 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [486075185] [2020-10-29 12:19:23,350 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 12:19:23,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:19:23,365 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:19:23,397 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:19:23,453 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:19:23,524 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:19:28,385 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:19:28,385 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 264 [2020-10-29 12:19:28,385 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-29 12:19:28,385 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5021 [2020-10-29 12:19:28,385 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:19:28,385 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:19:28,385 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 26 [2020-10-29 12:19:28,385 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 97 [2020-10-29 12:19:28,385 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 74 [2020-10-29 12:19:28,386 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:19:28,427 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 12:19:28,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:19:28,429 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:19:28,431 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:19:28,431 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 12:19:28,431 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:19:28,431 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 12:19:28,431 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:19:28,431 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:19:28,431 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 12:19:28,432 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:19:28,432 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 12:19:28,432 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:19:28,433 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-29 12:19:28,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:19:28,436 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:19:28,499 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:19:29,633 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:19:29,633 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 82 [2020-10-29 12:19:29,633 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 12:19:29,633 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1197 [2020-10-29 12:19:29,633 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:19:29,633 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:19:29,633 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 26 [2020-10-29 12:19:29,633 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-29 12:19:29,633 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 74 [2020-10-29 12:19:29,633 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:19:30,188 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2020-10-29 12:19:30,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:19:30,213 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:19:31,374 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:19:31,374 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 82 [2020-10-29 12:19:31,374 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:19:31,374 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1171 [2020-10-29 12:19:31,375 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:19:31,375 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:19:31,375 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 26 [2020-10-29 12:19:31,375 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-29 12:19:31,375 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 74 [2020-10-29 12:19:31,375 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:19:31,396 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 167 [2020-10-29 12:19:31,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:19:31,429 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:19:31,489 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:19:32,626 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:19:32,626 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 82 [2020-10-29 12:19:32,626 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 12:19:32,626 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1211 [2020-10-29 12:19:32,626 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:19:32,626 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:19:32,626 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 26 [2020-10-29 12:19:32,626 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-29 12:19:32,626 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 74 [2020-10-29 12:19:32,627 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:19:32,692 INFO L134 CoverageAnalysis]: Checked inductivity of 7899 backedges. 2556 proven. 5112 refuted. 0 times theorem prover too weak. 231 trivial. 0 not checked. [2020-10-29 12:19:32,693 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [486075185] [2020-10-29 12:19:32,693 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 12:19:32,693 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [28] total 28 [2020-10-29 12:19:32,693 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1236643621] [2020-10-29 12:19:32,693 INFO L461 AbstractCegarLoop]: Interpolant automaton has 28 states [2020-10-29 12:19:32,694 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 12:19:32,694 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2020-10-29 12:19:32,694 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=353, Invalid=403, Unknown=0, NotChecked=0, Total=756 [2020-10-29 12:19:32,695 INFO L87 Difference]: Start difference. First operand 99 states and 127 transitions. Second operand 28 states. [2020-10-29 12:19:34,272 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 12:19:34,273 INFO L93 Difference]: Finished difference Result 194 states and 254 transitions. [2020-10-29 12:19:34,273 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2020-10-29 12:19:34,273 INFO L78 Accepts]: Start accepts. Automaton has 28 states. Word has length 250 [2020-10-29 12:19:34,274 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 12:19:34,275 INFO L225 Difference]: With dead ends: 194 [2020-10-29 12:19:34,275 INFO L226 Difference]: Without dead ends: 104 [2020-10-29 12:19:34,278 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 110 GetRequests, 59 SyntacticMatches, 0 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 300 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=1053, Invalid=1703, Unknown=0, NotChecked=0, Total=2756 [2020-10-29 12:19:34,278 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 104 states. [2020-10-29 12:19:34,284 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 104 to 102. [2020-10-29 12:19:34,284 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 102 states. [2020-10-29 12:19:34,285 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 102 states to 102 states and 131 transitions. [2020-10-29 12:19:34,285 INFO L78 Accepts]: Start accepts. Automaton has 102 states and 131 transitions. Word has length 250 [2020-10-29 12:19:34,285 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 12:19:34,285 INFO L481 AbstractCegarLoop]: Abstraction has 102 states and 131 transitions. [2020-10-29 12:19:34,285 INFO L482 AbstractCegarLoop]: Interpolant automaton has 28 states. [2020-10-29 12:19:34,286 INFO L276 IsEmpty]: Start isEmpty. Operand 102 states and 131 transitions. [2020-10-29 12:19:34,287 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 260 [2020-10-29 12:19:34,287 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 12:19:34,287 INFO L422 BasicCegarLoop]: trace histogram [75, 75, 75, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 12:19:34,287 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2020-10-29 12:19:34,288 INFO L429 AbstractCegarLoop]: === Iteration 26 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 12:19:34,288 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 12:19:34,288 INFO L82 PathProgramCache]: Analyzing trace with hash 462651426, now seen corresponding path program 25 times [2020-10-29 12:19:34,288 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 12:19:34,289 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1455789349] [2020-10-29 12:19:34,289 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 12:19:34,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:19:34,307 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:19:34,344 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:19:34,399 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:19:34,491 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:19:39,336 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:19:39,336 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 273 [2020-10-29 12:19:39,336 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-29 12:19:39,336 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5031 [2020-10-29 12:19:39,336 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:19:39,336 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:19:39,336 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 27 [2020-10-29 12:19:39,336 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 100 [2020-10-29 12:19:39,336 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 77 [2020-10-29 12:19:39,336 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:19:39,379 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 12:19:39,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:19:39,381 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:19:39,383 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:19:39,383 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 12:19:39,383 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:19:39,383 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 12:19:39,383 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:19:39,383 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:19:39,383 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 12:19:39,384 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:19:39,384 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 12:19:39,384 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:19:39,385 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-29 12:19:39,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:19:39,388 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:19:39,426 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:19:40,729 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:19:40,729 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 85 [2020-10-29 12:19:40,730 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 12:19:40,730 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1341 [2020-10-29 12:19:40,730 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:19:40,730 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:19:40,730 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 27 [2020-10-29 12:19:40,730 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-29 12:19:40,730 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 77 [2020-10-29 12:19:40,730 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:19:41,338 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-10-29 12:19:41,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:19:41,366 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:19:42,706 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:19:42,706 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 85 [2020-10-29 12:19:42,706 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:19:42,706 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1351 [2020-10-29 12:19:42,706 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:19:42,706 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:19:42,706 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 27 [2020-10-29 12:19:42,706 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-29 12:19:42,706 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 77 [2020-10-29 12:19:42,707 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:19:42,726 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 173 [2020-10-29 12:19:42,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:19:42,754 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:19:42,821 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:19:44,055 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:19:44,055 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 85 [2020-10-29 12:19:44,056 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 12:19:44,056 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1311 [2020-10-29 12:19:44,056 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:19:44,056 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:19:44,056 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 27 [2020-10-29 12:19:44,056 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-29 12:19:44,056 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 77 [2020-10-29 12:19:44,056 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:19:44,122 INFO L134 CoverageAnalysis]: Checked inductivity of 8565 backedges. 2775 proven. 5550 refuted. 0 times theorem prover too weak. 240 trivial. 0 not checked. [2020-10-29 12:19:44,122 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1455789349] [2020-10-29 12:19:44,122 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 12:19:44,122 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [29] total 29 [2020-10-29 12:19:44,122 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [664924291] [2020-10-29 12:19:44,123 INFO L461 AbstractCegarLoop]: Interpolant automaton has 29 states [2020-10-29 12:19:44,123 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 12:19:44,123 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2020-10-29 12:19:44,123 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=380, Invalid=432, Unknown=0, NotChecked=0, Total=812 [2020-10-29 12:19:44,124 INFO L87 Difference]: Start difference. First operand 102 states and 131 transitions. Second operand 29 states. [2020-10-29 12:19:45,847 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 12:19:45,847 INFO L93 Difference]: Finished difference Result 200 states and 262 transitions. [2020-10-29 12:19:45,848 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-10-29 12:19:45,848 INFO L78 Accepts]: Start accepts. Automaton has 29 states. Word has length 259 [2020-10-29 12:19:45,848 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 12:19:45,849 INFO L225 Difference]: With dead ends: 200 [2020-10-29 12:19:45,849 INFO L226 Difference]: Without dead ends: 107 [2020-10-29 12:19:45,852 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 114 GetRequests, 61 SyntacticMatches, 0 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 325 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=1134, Invalid=1836, Unknown=0, NotChecked=0, Total=2970 [2020-10-29 12:19:45,852 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 107 states. [2020-10-29 12:19:45,857 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 107 to 105. [2020-10-29 12:19:45,857 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 105 states. [2020-10-29 12:19:45,858 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 105 states to 105 states and 135 transitions. [2020-10-29 12:19:45,858 INFO L78 Accepts]: Start accepts. Automaton has 105 states and 135 transitions. Word has length 259 [2020-10-29 12:19:45,858 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 12:19:45,858 INFO L481 AbstractCegarLoop]: Abstraction has 105 states and 135 transitions. [2020-10-29 12:19:45,859 INFO L482 AbstractCegarLoop]: Interpolant automaton has 29 states. [2020-10-29 12:19:45,859 INFO L276 IsEmpty]: Start isEmpty. Operand 105 states and 135 transitions. [2020-10-29 12:19:45,860 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 269 [2020-10-29 12:19:45,860 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 12:19:45,860 INFO L422 BasicCegarLoop]: trace histogram [78, 78, 78, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 12:19:45,861 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2020-10-29 12:19:45,861 INFO L429 AbstractCegarLoop]: === Iteration 27 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 12:19:45,861 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 12:19:45,861 INFO L82 PathProgramCache]: Analyzing trace with hash 594047025, now seen corresponding path program 26 times [2020-10-29 12:19:45,861 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 12:19:45,861 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1277315272] [2020-10-29 12:19:45,862 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 12:19:45,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:19:45,878 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:19:45,914 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:19:45,970 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:19:46,050 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:19:50,904 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:19:50,904 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 282 [2020-10-29 12:19:50,904 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-29 12:19:50,905 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5028 [2020-10-29 12:19:50,905 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:19:50,905 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:19:50,905 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 28 [2020-10-29 12:19:50,905 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-10-29 12:19:50,905 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 80 [2020-10-29 12:19:50,905 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:19:50,943 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 12:19:50,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:19:50,946 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:19:50,947 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:19:50,948 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 12:19:50,948 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:19:50,948 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 12:19:50,948 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:19:50,948 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:19:50,948 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 12:19:50,948 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:19:50,948 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 12:19:50,948 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:19:50,950 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-29 12:19:50,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:19:50,975 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:19:52,405 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:19:52,405 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 88 [2020-10-29 12:19:52,405 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:19:52,405 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1440 [2020-10-29 12:19:52,405 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:19:52,405 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:19:52,405 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 28 [2020-10-29 12:19:52,405 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-29 12:19:52,406 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 80 [2020-10-29 12:19:52,406 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:19:53,012 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2020-10-29 12:19:53,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:19:53,036 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:19:53,082 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:19:54,563 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:19:54,564 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 88 [2020-10-29 12:19:54,564 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 12:19:54,564 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1537 [2020-10-29 12:19:54,564 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:19:54,564 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:19:54,564 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 28 [2020-10-29 12:19:54,564 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-29 12:19:54,564 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 80 [2020-10-29 12:19:54,564 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:19:54,585 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 179 [2020-10-29 12:19:54,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:19:54,606 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:19:54,655 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:19:56,206 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:19:56,206 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 88 [2020-10-29 12:19:56,206 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 12:19:56,206 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1609 [2020-10-29 12:19:56,207 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:19:56,207 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:19:56,207 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 28 [2020-10-29 12:19:56,207 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-29 12:19:56,207 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 80 [2020-10-29 12:19:56,207 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:19:56,275 INFO L134 CoverageAnalysis]: Checked inductivity of 9258 backedges. 3003 proven. 6006 refuted. 0 times theorem prover too weak. 249 trivial. 0 not checked. [2020-10-29 12:19:56,275 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1277315272] [2020-10-29 12:19:56,275 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 12:19:56,275 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [30] total 30 [2020-10-29 12:19:56,275 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1273893269] [2020-10-29 12:19:56,276 INFO L461 AbstractCegarLoop]: Interpolant automaton has 30 states [2020-10-29 12:19:56,276 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 12:19:56,276 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2020-10-29 12:19:56,277 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=408, Invalid=462, Unknown=0, NotChecked=0, Total=870 [2020-10-29 12:19:56,277 INFO L87 Difference]: Start difference. First operand 105 states and 135 transitions. Second operand 30 states. [2020-10-29 12:19:58,129 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 12:19:58,130 INFO L93 Difference]: Finished difference Result 206 states and 270 transitions. [2020-10-29 12:19:58,130 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2020-10-29 12:19:58,130 INFO L78 Accepts]: Start accepts. Automaton has 30 states. Word has length 268 [2020-10-29 12:19:58,131 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 12:19:58,132 INFO L225 Difference]: With dead ends: 206 [2020-10-29 12:19:58,132 INFO L226 Difference]: Without dead ends: 110 [2020-10-29 12:19:58,134 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 118 GetRequests, 63 SyntacticMatches, 0 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 351 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=1218, Invalid=1974, Unknown=0, NotChecked=0, Total=3192 [2020-10-29 12:19:58,135 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 110 states. [2020-10-29 12:19:58,140 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 110 to 108. [2020-10-29 12:19:58,140 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 108 states. [2020-10-29 12:19:58,141 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 108 states to 108 states and 139 transitions. [2020-10-29 12:19:58,142 INFO L78 Accepts]: Start accepts. Automaton has 108 states and 139 transitions. Word has length 268 [2020-10-29 12:19:58,142 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 12:19:58,142 INFO L481 AbstractCegarLoop]: Abstraction has 108 states and 139 transitions. [2020-10-29 12:19:58,142 INFO L482 AbstractCegarLoop]: Interpolant automaton has 30 states. [2020-10-29 12:19:58,142 INFO L276 IsEmpty]: Start isEmpty. Operand 108 states and 139 transitions. [2020-10-29 12:19:58,144 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 278 [2020-10-29 12:19:58,144 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 12:19:58,144 INFO L422 BasicCegarLoop]: trace histogram [81, 81, 81, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 12:19:58,144 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2020-10-29 12:19:58,145 INFO L429 AbstractCegarLoop]: === Iteration 28 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 12:19:58,145 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 12:19:58,145 INFO L82 PathProgramCache]: Analyzing trace with hash 512961026, now seen corresponding path program 27 times [2020-10-29 12:19:58,145 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 12:19:58,145 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2078987298] [2020-10-29 12:19:58,145 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 12:19:58,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:19:58,165 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:19:58,210 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:19:58,271 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:19:58,357 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:20:03,232 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:20:03,233 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 291 [2020-10-29 12:20:03,233 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-29 12:20:03,233 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5070 [2020-10-29 12:20:03,233 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:20:03,233 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:20:03,233 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 29 [2020-10-29 12:20:03,233 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-10-29 12:20:03,233 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 83 [2020-10-29 12:20:03,233 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:20:03,275 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 12:20:03,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:20:03,277 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:20:03,279 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:20:03,280 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 12:20:03,280 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:20:03,280 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 12:20:03,280 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:20:03,280 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:20:03,280 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 12:20:03,281 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:20:03,281 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 12:20:03,281 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:20:03,282 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-29 12:20:03,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:20:03,321 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:20:04,869 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:20:04,870 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 91 [2020-10-29 12:20:04,870 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:20:04,870 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1565 [2020-10-29 12:20:04,870 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:20:04,870 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:20:04,870 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 29 [2020-10-29 12:20:04,870 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-29 12:20:04,870 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 83 [2020-10-29 12:20:04,870 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:20:05,553 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-10-29 12:20:05,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:20:05,575 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:20:05,623 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:20:07,136 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:20:07,136 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 91 [2020-10-29 12:20:07,136 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 12:20:07,136 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1570 [2020-10-29 12:20:07,136 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:20:07,136 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:20:07,136 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 29 [2020-10-29 12:20:07,136 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-29 12:20:07,136 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 83 [2020-10-29 12:20:07,137 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:20:07,161 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 185 [2020-10-29 12:20:07,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:20:07,188 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:20:07,240 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:20:08,860 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:20:08,861 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 91 [2020-10-29 12:20:08,861 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 12:20:08,861 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1683 [2020-10-29 12:20:08,861 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:20:08,861 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:20:08,861 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 29 [2020-10-29 12:20:08,861 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-29 12:20:08,861 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 83 [2020-10-29 12:20:08,861 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:20:08,934 INFO L134 CoverageAnalysis]: Checked inductivity of 9978 backedges. 3240 proven. 6480 refuted. 0 times theorem prover too weak. 258 trivial. 0 not checked. [2020-10-29 12:20:08,934 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2078987298] [2020-10-29 12:20:08,934 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 12:20:08,934 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [31] total 31 [2020-10-29 12:20:08,934 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [524518145] [2020-10-29 12:20:08,935 INFO L461 AbstractCegarLoop]: Interpolant automaton has 31 states [2020-10-29 12:20:08,935 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 12:20:08,935 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2020-10-29 12:20:08,936 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=437, Invalid=493, Unknown=0, NotChecked=0, Total=930 [2020-10-29 12:20:08,936 INFO L87 Difference]: Start difference. First operand 108 states and 139 transitions. Second operand 31 states. [2020-10-29 12:20:10,818 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 12:20:10,818 INFO L93 Difference]: Finished difference Result 212 states and 278 transitions. [2020-10-29 12:20:10,818 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2020-10-29 12:20:10,819 INFO L78 Accepts]: Start accepts. Automaton has 31 states. Word has length 277 [2020-10-29 12:20:10,819 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 12:20:10,820 INFO L225 Difference]: With dead ends: 212 [2020-10-29 12:20:10,820 INFO L226 Difference]: Without dead ends: 113 [2020-10-29 12:20:10,822 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 122 GetRequests, 65 SyntacticMatches, 0 SemanticMatches, 57 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 378 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=1305, Invalid=2117, Unknown=0, NotChecked=0, Total=3422 [2020-10-29 12:20:10,823 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 113 states. [2020-10-29 12:20:10,828 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 113 to 111. [2020-10-29 12:20:10,828 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 111 states. [2020-10-29 12:20:10,829 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 111 states to 111 states and 143 transitions. [2020-10-29 12:20:10,830 INFO L78 Accepts]: Start accepts. Automaton has 111 states and 143 transitions. Word has length 277 [2020-10-29 12:20:10,830 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 12:20:10,830 INFO L481 AbstractCegarLoop]: Abstraction has 111 states and 143 transitions. [2020-10-29 12:20:10,830 INFO L482 AbstractCegarLoop]: Interpolant automaton has 31 states. [2020-10-29 12:20:10,830 INFO L276 IsEmpty]: Start isEmpty. Operand 111 states and 143 transitions. [2020-10-29 12:20:10,832 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 287 [2020-10-29 12:20:10,832 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 12:20:10,832 INFO L422 BasicCegarLoop]: trace histogram [84, 84, 84, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 12:20:10,832 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2020-10-29 12:20:10,833 INFO L429 AbstractCegarLoop]: === Iteration 29 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 12:20:10,833 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 12:20:10,833 INFO L82 PathProgramCache]: Analyzing trace with hash -337392815, now seen corresponding path program 28 times [2020-10-29 12:20:10,833 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 12:20:10,833 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1028300308] [2020-10-29 12:20:10,834 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 12:20:10,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:20:10,854 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:20:10,897 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:20:10,958 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:20:11,048 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:20:16,030 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:20:16,030 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 300 [2020-10-29 12:20:16,030 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-29 12:20:16,030 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5178 [2020-10-29 12:20:16,030 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:20:16,030 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:20:16,030 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 30 [2020-10-29 12:20:16,030 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-10-29 12:20:16,030 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 86 [2020-10-29 12:20:16,031 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:20:16,071 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 12:20:16,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:20:16,074 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:20:16,075 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:20:16,076 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 12:20:16,076 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:20:16,076 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 12:20:16,076 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:20:16,076 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:20:16,076 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 12:20:16,076 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:20:16,076 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 12:20:16,077 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:20:16,078 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-29 12:20:16,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:20:16,120 FATAL L256 erpolLogProxyWrapper]: Now shrinking...