/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SequenceOfStatements --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=DEEPEST --traceabstraction.additional.smt.options log-additional-information=true --traceabstraction.additional.smt.options unknown-allowed=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf language data_model -i ../../../trunk/examples/svcomp/array-examples/standard_copyInitSum_ground.i -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-27 14:22:35,443 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-27 14:22:35,446 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-27 14:22:35,483 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-27 14:22:35,483 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-27 14:22:35,485 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-27 14:22:35,486 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-27 14:22:35,489 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-27 14:22:35,491 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-27 14:22:35,492 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-27 14:22:35,493 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-27 14:22:35,495 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-27 14:22:35,495 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-27 14:22:35,497 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-27 14:22:35,498 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-27 14:22:35,500 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-27 14:22:35,501 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-27 14:22:35,502 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-27 14:22:35,516 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-27 14:22:35,518 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-27 14:22:35,520 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-27 14:22:35,521 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-27 14:22:35,523 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-27 14:22:35,524 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-27 14:22:35,527 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-27 14:22:35,528 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-27 14:22:35,528 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-27 14:22:35,529 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-27 14:22:35,530 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-27 14:22:35,531 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-27 14:22:35,531 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-27 14:22:35,532 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-27 14:22:35,533 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-27 14:22:35,534 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-27 14:22:35,535 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-27 14:22:35,536 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-27 14:22:35,536 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-27 14:22:35,537 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-27 14:22:35,537 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-27 14:22:35,538 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-27 14:22:35,539 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-27 14:22:35,543 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-27 14:22:35,571 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-27 14:22:35,571 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-27 14:22:35,573 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-27 14:22:35,573 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-27 14:22:35,573 INFO L138 SettingsManager]: * Use SBE=true [2020-10-27 14:22:35,573 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-27 14:22:35,574 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-27 14:22:35,574 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-27 14:22:35,574 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-27 14:22:35,574 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-27 14:22:35,575 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-27 14:22:35,575 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-27 14:22:35,575 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-27 14:22:35,575 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-27 14:22:35,576 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-27 14:22:35,576 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-27 14:22:35,576 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-27 14:22:35,576 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-27 14:22:35,577 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-27 14:22:35,577 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-27 14:22:35,577 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-27 14:22:35,577 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-27 14:22:35,577 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-27 14:22:35,578 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-27 14:22:35,578 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-27 14:22:35,578 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-27 14:22:35,578 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-27 14:22:35,579 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-27 14:22:35,579 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-27 14:22:35,579 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=DEEPEST;log-additional-information=true;unknown-allowed=true; [2020-10-27 14:22:35,989 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-27 14:22:36,034 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-27 14:22:36,037 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-27 14:22:36,039 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-27 14:22:36,039 INFO L275 PluginConnector]: CDTParser initialized [2020-10-27 14:22:36,042 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/array-examples/standard_copyInitSum_ground.i [2020-10-27 14:22:36,127 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/e9beeebe1/f64eac17a8f541c69a28e5aad8ace416/FLAGa2ae345a9 [2020-10-27 14:22:36,793 INFO L306 CDTParser]: Found 1 translation units. [2020-10-27 14:22:36,794 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/array-examples/standard_copyInitSum_ground.i [2020-10-27 14:22:36,803 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/e9beeebe1/f64eac17a8f541c69a28e5aad8ace416/FLAGa2ae345a9 [2020-10-27 14:22:37,112 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/e9beeebe1/f64eac17a8f541c69a28e5aad8ace416 [2020-10-27 14:22:37,115 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-27 14:22:37,122 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-27 14:22:37,124 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-27 14:22:37,124 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-27 14:22:37,129 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-27 14:22:37,130 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 02:22:37" (1/1) ... [2020-10-27 14:22:37,133 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2bd6ea22 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 02:22:37, skipping insertion in model container [2020-10-27 14:22:37,134 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 02:22:37" (1/1) ... [2020-10-27 14:22:37,142 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-27 14:22:37,157 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-27 14:22:37,331 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-27 14:22:37,340 INFO L203 MainTranslator]: Completed pre-run [2020-10-27 14:22:37,364 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-27 14:22:37,381 INFO L208 MainTranslator]: Completed translation [2020-10-27 14:22:37,382 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 02:22:37 WrapperNode [2020-10-27 14:22:37,382 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-27 14:22:37,383 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-27 14:22:37,384 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-27 14:22:37,384 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-27 14:22:37,397 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 02:22:37" (1/1) ... [2020-10-27 14:22:37,398 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 02:22:37" (1/1) ... [2020-10-27 14:22:37,406 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 02:22:37" (1/1) ... [2020-10-27 14:22:37,407 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 02:22:37" (1/1) ... [2020-10-27 14:22:37,415 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 02:22:37" (1/1) ... [2020-10-27 14:22:37,421 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 02:22:37" (1/1) ... [2020-10-27 14:22:37,423 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 02:22:37" (1/1) ... [2020-10-27 14:22:37,425 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-27 14:22:37,426 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-27 14:22:37,427 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-27 14:22:37,427 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-27 14:22:37,428 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 02:22:37" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-27 14:22:37,517 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-27 14:22:37,517 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-27 14:22:37,518 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-27 14:22:37,518 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-10-27 14:22:37,518 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-27 14:22:37,519 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-27 14:22:37,519 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-27 14:22:37,519 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-27 14:22:37,519 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_perror_fail [2020-10-27 14:22:37,519 INFO L130 BoogieDeclarations]: Found specification of procedure __assert [2020-10-27 14:22:37,520 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-27 14:22:37,521 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-27 14:22:37,521 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-10-27 14:22:37,521 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-27 14:22:37,521 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-27 14:22:37,522 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-27 14:22:37,522 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-27 14:22:37,522 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-27 14:22:37,523 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-27 14:22:37,523 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-27 14:22:38,109 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-27 14:22:38,109 INFO L298 CfgBuilder]: Removed 4 assume(true) statements. [2020-10-27 14:22:38,111 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 02:22:38 BoogieIcfgContainer [2020-10-27 14:22:38,111 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-27 14:22:38,116 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-27 14:22:38,117 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-27 14:22:38,120 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-27 14:22:38,121 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.10 02:22:37" (1/3) ... [2020-10-27 14:22:38,123 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@28d35658 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 02:22:38, skipping insertion in model container [2020-10-27 14:22:38,123 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 02:22:37" (2/3) ... [2020-10-27 14:22:38,124 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@28d35658 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 02:22:38, skipping insertion in model container [2020-10-27 14:22:38,124 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 02:22:38" (3/3) ... [2020-10-27 14:22:38,127 INFO L111 eAbstractionObserver]: Analyzing ICFG standard_copyInitSum_ground.i [2020-10-27 14:22:38,162 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-27 14:22:38,168 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-27 14:22:38,183 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-27 14:22:38,242 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-27 14:22:38,242 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-27 14:22:38,242 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-27 14:22:38,243 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-27 14:22:38,243 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-27 14:22:38,243 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-27 14:22:38,243 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-27 14:22:38,243 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-27 14:22:38,266 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states. [2020-10-27 14:22:38,276 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-10-27 14:22:38,276 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 14:22:38,277 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 14:22:38,277 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 14:22:38,287 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 14:22:38,287 INFO L82 PathProgramCache]: Analyzing trace with hash -925662558, now seen corresponding path program 1 times [2020-10-27 14:22:38,297 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 14:22:38,299 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [834665895] [2020-10-27 14:22:38,299 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 14:22:38,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:22:38,509 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:22:38,559 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:22:38,598 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:22:38,778 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:22:38,778 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 29 [2020-10-27 14:22:38,779 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-27 14:22:38,779 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 293 [2020-10-27 14:22:38,781 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:22:38,782 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:22:38,782 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-10-27 14:22:38,782 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:22:38,782 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-27 14:22:38,861 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 14:22:38,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:22:38,868 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:22:38,876 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:22:38,876 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 14:22:38,877 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:22:38,877 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-27 14:22:38,877 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:22:38,877 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:22:38,878 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:22:38,878 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:22:38,878 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:22:38,899 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 14:22:38,900 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [834665895] [2020-10-27 14:22:38,902 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 14:22:38,902 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-27 14:22:38,904 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1131542397] [2020-10-27 14:22:38,914 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-27 14:22:38,914 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 14:22:38,933 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-27 14:22:38,934 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-27 14:22:38,937 INFO L87 Difference]: Start difference. First operand 34 states. Second operand 3 states. [2020-10-27 14:22:39,063 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 14:22:39,064 INFO L93 Difference]: Finished difference Result 58 states and 76 transitions. [2020-10-27 14:22:39,066 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-27 14:22:39,068 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 19 [2020-10-27 14:22:39,069 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 14:22:39,076 INFO L225 Difference]: With dead ends: 58 [2020-10-27 14:22:39,077 INFO L226 Difference]: Without dead ends: 26 [2020-10-27 14:22:39,080 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-27 14:22:39,099 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2020-10-27 14:22:39,120 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 26. [2020-10-27 14:22:39,121 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2020-10-27 14:22:39,123 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 29 transitions. [2020-10-27 14:22:39,124 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 29 transitions. Word has length 19 [2020-10-27 14:22:39,125 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 14:22:39,125 INFO L481 AbstractCegarLoop]: Abstraction has 26 states and 29 transitions. [2020-10-27 14:22:39,125 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-27 14:22:39,125 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 29 transitions. [2020-10-27 14:22:39,126 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-10-27 14:22:39,126 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 14:22:39,126 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 14:22:39,127 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-27 14:22:39,127 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 14:22:39,128 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 14:22:39,128 INFO L82 PathProgramCache]: Analyzing trace with hash -774064106, now seen corresponding path program 1 times [2020-10-27 14:22:39,128 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 14:22:39,128 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [670067480] [2020-10-27 14:22:39,129 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 14:22:39,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:22:39,152 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:22:39,175 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:22:39,209 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:22:39,473 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:22:39,474 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 29 [2020-10-27 14:22:39,474 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-27 14:22:39,474 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 329 [2020-10-27 14:22:39,474 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:22:39,475 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 14:22:39,475 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-27 14:22:39,475 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-27 14:22:39,475 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:22:39,548 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 14:22:39,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:22:39,556 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:22:39,565 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:22:39,566 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 14:22:39,566 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:22:39,566 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-27 14:22:39,566 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:22:39,567 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:22:39,568 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:22:39,568 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:22:39,582 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 15 [2020-10-27 14:22:39,592 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 14:22:39,593 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [670067480] [2020-10-27 14:22:39,599 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 14:22:39,599 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-27 14:22:39,599 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2040924603] [2020-10-27 14:22:39,601 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-27 14:22:39,602 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 14:22:39,608 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-27 14:22:39,608 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-27 14:22:39,608 INFO L87 Difference]: Start difference. First operand 26 states and 29 transitions. Second operand 4 states. [2020-10-27 14:22:39,755 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 14:22:39,756 INFO L93 Difference]: Finished difference Result 50 states and 58 transitions. [2020-10-27 14:22:39,756 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-27 14:22:39,756 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 19 [2020-10-27 14:22:39,757 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 14:22:39,757 INFO L225 Difference]: With dead ends: 50 [2020-10-27 14:22:39,758 INFO L226 Difference]: Without dead ends: 31 [2020-10-27 14:22:39,759 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-27 14:22:39,759 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2020-10-27 14:22:39,766 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 29. [2020-10-27 14:22:39,766 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2020-10-27 14:22:39,767 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 32 transitions. [2020-10-27 14:22:39,767 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 32 transitions. Word has length 19 [2020-10-27 14:22:39,768 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 14:22:39,768 INFO L481 AbstractCegarLoop]: Abstraction has 29 states and 32 transitions. [2020-10-27 14:22:39,768 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-27 14:22:39,768 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 32 transitions. [2020-10-27 14:22:39,769 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2020-10-27 14:22:39,769 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 14:22:39,769 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 14:22:39,769 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-27 14:22:39,770 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 14:22:39,770 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 14:22:39,770 INFO L82 PathProgramCache]: Analyzing trace with hash 504393060, now seen corresponding path program 1 times [2020-10-27 14:22:39,771 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 14:22:39,771 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [866042377] [2020-10-27 14:22:39,771 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 14:22:39,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:22:39,790 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:22:39,808 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:22:39,822 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:22:40,076 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:22:41,133 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:22:41,134 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-10-27 14:22:41,134 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-27 14:22:41,134 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1348 [2020-10-27 14:22:41,134 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:22:41,134 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-27 14:22:41,134 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 18 [2020-10-27 14:22:41,135 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-10-27 14:22:41,135 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:22:41,186 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 14:22:41,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:22:41,191 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:22:41,193 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:22:41,194 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 14:22:41,194 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:22:41,194 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 14:22:41,194 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:22:41,195 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:22:41,195 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:22:41,195 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:22:41,195 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:22:41,199 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-10-27 14:22:41,199 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [866042377] [2020-10-27 14:22:41,199 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 14:22:41,200 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-27 14:22:41,200 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [16095064] [2020-10-27 14:22:41,200 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-27 14:22:41,201 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 14:22:41,201 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-27 14:22:41,201 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-27 14:22:41,202 INFO L87 Difference]: Start difference. First operand 29 states and 32 transitions. Second operand 5 states. [2020-10-27 14:22:41,327 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 14:22:41,327 INFO L93 Difference]: Finished difference Result 57 states and 65 transitions. [2020-10-27 14:22:41,328 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-27 14:22:41,328 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 24 [2020-10-27 14:22:41,328 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 14:22:41,329 INFO L225 Difference]: With dead ends: 57 [2020-10-27 14:22:41,329 INFO L226 Difference]: Without dead ends: 36 [2020-10-27 14:22:41,330 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-27 14:22:41,330 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2020-10-27 14:22:41,336 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 34. [2020-10-27 14:22:41,336 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34 states. [2020-10-27 14:22:41,337 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 37 transitions. [2020-10-27 14:22:41,337 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 37 transitions. Word has length 24 [2020-10-27 14:22:41,338 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 14:22:41,338 INFO L481 AbstractCegarLoop]: Abstraction has 34 states and 37 transitions. [2020-10-27 14:22:41,338 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-27 14:22:41,338 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 37 transitions. [2020-10-27 14:22:41,339 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2020-10-27 14:22:41,339 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 14:22:41,339 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 14:22:41,339 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-27 14:22:41,340 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 14:22:41,340 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 14:22:41,340 INFO L82 PathProgramCache]: Analyzing trace with hash -1961250610, now seen corresponding path program 2 times [2020-10-27 14:22:41,340 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 14:22:41,341 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [289854843] [2020-10-27 14:22:41,341 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 14:22:41,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:22:41,387 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:22:41,407 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:22:41,420 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:22:41,874 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:22:43,058 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:22:46,264 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:22:46,265 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 39 [2020-10-27 14:22:46,265 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-27 14:22:46,265 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4884 [2020-10-27 14:22:46,265 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:22:46,265 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 14:22:46,266 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-10-27 14:22:46,266 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 14:22:46,266 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:22:46,330 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 14:22:46,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:22:46,334 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:22:46,339 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:22:46,340 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 14:22:46,340 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:22:46,340 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-27 14:22:46,340 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:22:46,340 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:22:46,341 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:22:46,341 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:22:46,345 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-10-27 14:22:46,352 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2020-10-27 14:22:46,353 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [289854843] [2020-10-27 14:22:46,354 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 14:22:46,356 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-27 14:22:46,356 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1394952511] [2020-10-27 14:22:46,357 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-27 14:22:46,358 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 14:22:46,358 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-27 14:22:46,358 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-10-27 14:22:46,359 INFO L87 Difference]: Start difference. First operand 34 states and 37 transitions. Second operand 6 states. [2020-10-27 14:22:46,503 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 14:22:46,503 INFO L93 Difference]: Finished difference Result 66 states and 74 transitions. [2020-10-27 14:22:46,504 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-27 14:22:46,504 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 29 [2020-10-27 14:22:46,504 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 14:22:46,505 INFO L225 Difference]: With dead ends: 66 [2020-10-27 14:22:46,505 INFO L226 Difference]: Without dead ends: 41 [2020-10-27 14:22:46,507 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-10-27 14:22:46,507 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41 states. [2020-10-27 14:22:46,521 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 39. [2020-10-27 14:22:46,521 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39 states. [2020-10-27 14:22:46,523 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 42 transitions. [2020-10-27 14:22:46,523 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 42 transitions. Word has length 29 [2020-10-27 14:22:46,525 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 14:22:46,526 INFO L481 AbstractCegarLoop]: Abstraction has 39 states and 42 transitions. [2020-10-27 14:22:46,526 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-27 14:22:46,526 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 42 transitions. [2020-10-27 14:22:46,527 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2020-10-27 14:22:46,528 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 14:22:46,528 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 14:22:46,528 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-27 14:22:46,528 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 14:22:46,529 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 14:22:46,529 INFO L82 PathProgramCache]: Analyzing trace with hash 407436188, now seen corresponding path program 3 times [2020-10-27 14:22:46,530 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 14:22:46,531 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [867881675] [2020-10-27 14:22:46,531 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 14:22:46,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:22:46,557 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:22:46,576 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:22:46,612 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:22:47,286 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:22:47,840 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:22:49,589 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:22:51,553 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:22:51,554 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 44 [2020-10-27 14:22:51,554 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-27 14:22:51,554 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5004 [2020-10-27 14:22:51,554 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:22:51,554 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-27 14:22:51,554 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 24 [2020-10-27 14:22:51,554 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-27 14:22:51,555 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:22:51,638 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 14:22:51,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:22:51,641 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:22:51,644 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:22:51,644 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 14:22:51,645 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:22:51,645 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 14:22:51,645 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:22:51,645 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:22:51,645 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:22:51,645 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:22:51,646 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:22:51,650 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2020-10-27 14:22:51,650 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [867881675] [2020-10-27 14:22:51,650 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 14:22:51,651 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-27 14:22:51,651 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1665115310] [2020-10-27 14:22:51,651 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-27 14:22:51,651 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 14:22:51,652 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-27 14:22:51,652 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-10-27 14:22:51,652 INFO L87 Difference]: Start difference. First operand 39 states and 42 transitions. Second operand 7 states. [2020-10-27 14:22:51,783 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 14:22:51,783 INFO L93 Difference]: Finished difference Result 75 states and 83 transitions. [2020-10-27 14:22:51,783 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-27 14:22:51,784 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 34 [2020-10-27 14:22:51,784 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 14:22:51,784 INFO L225 Difference]: With dead ends: 75 [2020-10-27 14:22:51,785 INFO L226 Difference]: Without dead ends: 46 [2020-10-27 14:22:51,785 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-10-27 14:22:51,786 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46 states. [2020-10-27 14:22:51,792 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46 to 44. [2020-10-27 14:22:51,792 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 44 states. [2020-10-27 14:22:51,793 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 47 transitions. [2020-10-27 14:22:51,793 INFO L78 Accepts]: Start accepts. Automaton has 44 states and 47 transitions. Word has length 34 [2020-10-27 14:22:51,793 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 14:22:51,793 INFO L481 AbstractCegarLoop]: Abstraction has 44 states and 47 transitions. [2020-10-27 14:22:51,794 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-27 14:22:51,794 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 47 transitions. [2020-10-27 14:22:51,795 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2020-10-27 14:22:51,795 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 14:22:51,795 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 14:22:51,795 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-27 14:22:51,795 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 14:22:51,796 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 14:22:51,796 INFO L82 PathProgramCache]: Analyzing trace with hash -1192992378, now seen corresponding path program 4 times [2020-10-27 14:22:51,796 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 14:22:51,796 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [970127122] [2020-10-27 14:22:51,796 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 14:22:51,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:22:51,819 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:22:51,842 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:22:51,858 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:22:52,568 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:22:53,379 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:22:55,230 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:22:56,814 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:22:56,814 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 49 [2020-10-27 14:22:56,815 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-27 14:22:56,815 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-10-27 14:22:56,815 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:22:56,815 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-27 14:22:56,815 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 27 [2020-10-27 14:22:56,815 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-27 14:22:56,816 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:22:56,912 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 14:22:56,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:22:56,916 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:22:56,919 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:22:56,919 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 14:22:56,921 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:22:56,922 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 14:22:56,922 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:22:56,922 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:22:56,922 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:22:56,922 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:22:56,922 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:22:56,929 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2020-10-27 14:22:56,930 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [970127122] [2020-10-27 14:22:56,930 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 14:22:56,930 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-27 14:22:56,931 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [804314133] [2020-10-27 14:22:56,931 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-27 14:22:56,932 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 14:22:56,932 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-27 14:22:56,933 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-10-27 14:22:56,933 INFO L87 Difference]: Start difference. First operand 44 states and 47 transitions. Second operand 8 states. [2020-10-27 14:22:57,115 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 14:22:57,116 INFO L93 Difference]: Finished difference Result 84 states and 92 transitions. [2020-10-27 14:22:57,116 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-27 14:22:57,117 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 39 [2020-10-27 14:22:57,117 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 14:22:57,117 INFO L225 Difference]: With dead ends: 84 [2020-10-27 14:22:57,118 INFO L226 Difference]: Without dead ends: 51 [2020-10-27 14:22:57,119 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-10-27 14:22:57,120 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51 states. [2020-10-27 14:22:57,135 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51 to 49. [2020-10-27 14:22:57,135 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 49 states. [2020-10-27 14:22:57,136 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 52 transitions. [2020-10-27 14:22:57,136 INFO L78 Accepts]: Start accepts. Automaton has 49 states and 52 transitions. Word has length 39 [2020-10-27 14:22:57,136 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 14:22:57,136 INFO L481 AbstractCegarLoop]: Abstraction has 49 states and 52 transitions. [2020-10-27 14:22:57,137 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-27 14:22:57,137 INFO L276 IsEmpty]: Start isEmpty. Operand 49 states and 52 transitions. [2020-10-27 14:22:57,138 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2020-10-27 14:22:57,138 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 14:22:57,140 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 14:22:57,141 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-27 14:22:57,141 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 14:22:57,141 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 14:22:57,141 INFO L82 PathProgramCache]: Analyzing trace with hash 1238065620, now seen corresponding path program 5 times [2020-10-27 14:22:57,142 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 14:22:57,142 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1879620597] [2020-10-27 14:22:57,142 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 14:22:57,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:22:57,176 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:22:57,214 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:22:57,240 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:22:58,855 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:22:59,796 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:23:00,921 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:23:02,037 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:23:02,485 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:23:02,485 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 54 [2020-10-27 14:23:02,485 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-27 14:23:02,485 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5320 [2020-10-27 14:23:02,486 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:23:02,486 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-27 14:23:02,486 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 30 [2020-10-27 14:23:02,486 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-27 14:23:02,486 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:23:02,579 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 14:23:02,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:23:02,582 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:23:02,585 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:23:02,585 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 14:23:02,585 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:23:02,585 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 14:23:02,586 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:23:02,586 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:23:02,586 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:23:02,586 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:23:02,586 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:23:02,591 INFO L134 CoverageAnalysis]: Checked inductivity of 65 backedges. 0 proven. 25 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2020-10-27 14:23:02,591 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1879620597] [2020-10-27 14:23:02,592 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 14:23:02,592 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-10-27 14:23:02,592 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [774997991] [2020-10-27 14:23:02,592 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-27 14:23:02,593 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 14:23:02,593 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-27 14:23:02,593 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2020-10-27 14:23:02,594 INFO L87 Difference]: Start difference. First operand 49 states and 52 transitions. Second operand 9 states. [2020-10-27 14:23:02,789 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 14:23:02,790 INFO L93 Difference]: Finished difference Result 93 states and 101 transitions. [2020-10-27 14:23:02,790 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-27 14:23:02,791 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 44 [2020-10-27 14:23:02,791 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 14:23:02,792 INFO L225 Difference]: With dead ends: 93 [2020-10-27 14:23:02,792 INFO L226 Difference]: Without dead ends: 56 [2020-10-27 14:23:02,793 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2020-10-27 14:23:02,793 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56 states. [2020-10-27 14:23:02,799 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56 to 54. [2020-10-27 14:23:02,799 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 54 states. [2020-10-27 14:23:02,800 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 57 transitions. [2020-10-27 14:23:02,800 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 57 transitions. Word has length 44 [2020-10-27 14:23:02,801 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 14:23:02,801 INFO L481 AbstractCegarLoop]: Abstraction has 54 states and 57 transitions. [2020-10-27 14:23:02,801 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-27 14:23:02,801 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 57 transitions. [2020-10-27 14:23:02,802 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2020-10-27 14:23:02,802 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 14:23:02,803 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 14:23:02,803 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-27 14:23:02,803 INFO L429 AbstractCegarLoop]: === Iteration 8 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 14:23:02,803 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 14:23:02,804 INFO L82 PathProgramCache]: Analyzing trace with hash -2060924354, now seen corresponding path program 6 times [2020-10-27 14:23:02,804 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 14:23:02,804 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1301881016] [2020-10-27 14:23:02,804 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 14:23:02,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:23:02,830 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:23:02,863 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:23:02,884 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:23:04,841 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:23:06,748 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:23:07,828 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:23:07,828 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 59 [2020-10-27 14:23:07,828 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-27 14:23:07,828 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5006 [2020-10-27 14:23:07,828 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:23:07,829 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-27 14:23:07,833 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 33 [2020-10-27 14:23:07,833 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-27 14:23:07,834 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 5 [2020-10-27 14:23:08,090 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 14:23:08,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:23:08,100 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:23:08,106 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:23:08,106 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 14:23:08,106 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:23:08,106 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-27 14:23:08,106 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:23:08,107 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:23:08,107 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:23:08,107 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:23:08,107 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:23:08,117 INFO L134 CoverageAnalysis]: Checked inductivity of 93 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 57 trivial. 0 not checked. [2020-10-27 14:23:08,121 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1301881016] [2020-10-27 14:23:08,121 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 14:23:08,121 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-10-27 14:23:08,122 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [156802866] [2020-10-27 14:23:08,122 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-27 14:23:08,122 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 14:23:08,125 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-27 14:23:08,126 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2020-10-27 14:23:08,126 INFO L87 Difference]: Start difference. First operand 54 states and 57 transitions. Second operand 10 states. [2020-10-27 14:23:08,363 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 14:23:08,363 INFO L93 Difference]: Finished difference Result 102 states and 110 transitions. [2020-10-27 14:23:08,364 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-27 14:23:08,364 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 49 [2020-10-27 14:23:08,364 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 14:23:08,365 INFO L225 Difference]: With dead ends: 102 [2020-10-27 14:23:08,365 INFO L226 Difference]: Without dead ends: 61 [2020-10-27 14:23:08,366 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2020-10-27 14:23:08,366 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61 states. [2020-10-27 14:23:08,375 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61 to 59. [2020-10-27 14:23:08,376 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 59 states. [2020-10-27 14:23:08,377 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59 states to 59 states and 62 transitions. [2020-10-27 14:23:08,377 INFO L78 Accepts]: Start accepts. Automaton has 59 states and 62 transitions. Word has length 49 [2020-10-27 14:23:08,377 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 14:23:08,377 INFO L481 AbstractCegarLoop]: Abstraction has 59 states and 62 transitions. [2020-10-27 14:23:08,377 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-27 14:23:08,377 INFO L276 IsEmpty]: Start isEmpty. Operand 59 states and 62 transitions. [2020-10-27 14:23:08,378 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2020-10-27 14:23:08,378 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 14:23:08,379 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 14:23:08,379 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-27 14:23:08,379 INFO L429 AbstractCegarLoop]: === Iteration 9 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 14:23:08,379 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 14:23:08,380 INFO L82 PathProgramCache]: Analyzing trace with hash -623140852, now seen corresponding path program 7 times [2020-10-27 14:23:08,380 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 14:23:08,380 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [783960811] [2020-10-27 14:23:08,380 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 14:23:08,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:23:08,419 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:23:08,457 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:23:08,478 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:23:13,423 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:23:13,423 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 64 [2020-10-27 14:23:13,423 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-27 14:23:13,423 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5014 [2020-10-27 14:23:13,423 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:23:13,423 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-27 14:23:13,423 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 36 [2020-10-27 14:23:13,423 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-27 14:23:13,424 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:23:13,583 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 14:23:13,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:23:13,588 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:23:13,590 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:23:13,591 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 14:23:13,591 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:23:13,591 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 14:23:13,591 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:23:13,591 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:23:13,592 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:23:13,592 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:23:13,592 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:23:13,599 INFO L134 CoverageAnalysis]: Checked inductivity of 126 backedges. 0 proven. 49 refuted. 0 times theorem prover too weak. 77 trivial. 0 not checked. [2020-10-27 14:23:13,599 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [783960811] [2020-10-27 14:23:13,599 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 14:23:13,600 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-10-27 14:23:13,600 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1691059932] [2020-10-27 14:23:13,600 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-27 14:23:13,603 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 14:23:13,604 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-27 14:23:13,605 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-10-27 14:23:13,605 INFO L87 Difference]: Start difference. First operand 59 states and 62 transitions. Second operand 11 states. [2020-10-27 14:23:13,845 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 14:23:13,845 INFO L93 Difference]: Finished difference Result 111 states and 119 transitions. [2020-10-27 14:23:13,846 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-27 14:23:13,846 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 54 [2020-10-27 14:23:13,846 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 14:23:13,847 INFO L225 Difference]: With dead ends: 111 [2020-10-27 14:23:13,847 INFO L226 Difference]: Without dead ends: 66 [2020-10-27 14:23:13,848 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-10-27 14:23:13,849 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66 states. [2020-10-27 14:23:13,864 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66 to 64. [2020-10-27 14:23:13,864 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 64 states. [2020-10-27 14:23:13,865 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64 states to 64 states and 67 transitions. [2020-10-27 14:23:13,869 INFO L78 Accepts]: Start accepts. Automaton has 64 states and 67 transitions. Word has length 54 [2020-10-27 14:23:13,870 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 14:23:13,870 INFO L481 AbstractCegarLoop]: Abstraction has 64 states and 67 transitions. [2020-10-27 14:23:13,870 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-27 14:23:13,870 INFO L276 IsEmpty]: Start isEmpty. Operand 64 states and 67 transitions. [2020-10-27 14:23:13,871 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2020-10-27 14:23:13,871 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 14:23:13,871 INFO L422 BasicCegarLoop]: trace histogram [8, 8, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 14:23:13,871 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-27 14:23:13,871 INFO L429 AbstractCegarLoop]: === Iteration 10 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 14:23:13,872 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 14:23:13,873 INFO L82 PathProgramCache]: Analyzing trace with hash 1758653174, now seen corresponding path program 8 times [2020-10-27 14:23:13,873 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 14:23:13,875 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [441737179] [2020-10-27 14:23:13,875 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 14:23:13,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:23:13,925 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:23:13,965 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:23:13,986 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:23:18,925 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:23:18,926 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 69 [2020-10-27 14:23:18,926 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-27 14:23:18,926 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5016 [2020-10-27 14:23:18,926 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:23:18,926 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-27 14:23:18,927 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 39 [2020-10-27 14:23:18,927 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-27 14:23:18,927 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:23:19,077 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 14:23:19,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:23:19,084 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:23:19,086 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:23:19,087 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 14:23:19,087 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:23:19,087 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 14:23:19,087 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:23:19,087 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:23:19,087 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:23:19,088 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:23:19,088 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:23:19,094 INFO L134 CoverageAnalysis]: Checked inductivity of 164 backedges. 0 proven. 64 refuted. 0 times theorem prover too weak. 100 trivial. 0 not checked. [2020-10-27 14:23:19,094 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [441737179] [2020-10-27 14:23:19,095 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 14:23:19,095 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-10-27 14:23:19,095 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1960809639] [2020-10-27 14:23:19,096 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-27 14:23:19,096 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 14:23:19,097 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-27 14:23:19,097 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=75, Unknown=0, NotChecked=0, Total=132 [2020-10-27 14:23:19,097 INFO L87 Difference]: Start difference. First operand 64 states and 67 transitions. Second operand 12 states. [2020-10-27 14:23:19,309 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 14:23:19,309 INFO L93 Difference]: Finished difference Result 120 states and 128 transitions. [2020-10-27 14:23:19,310 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-27 14:23:19,310 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 59 [2020-10-27 14:23:19,310 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 14:23:19,311 INFO L225 Difference]: With dead ends: 120 [2020-10-27 14:23:19,311 INFO L226 Difference]: Without dead ends: 71 [2020-10-27 14:23:19,312 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=57, Invalid=75, Unknown=0, NotChecked=0, Total=132 [2020-10-27 14:23:19,313 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 71 states. [2020-10-27 14:23:19,319 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 71 to 69. [2020-10-27 14:23:19,319 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 69 states. [2020-10-27 14:23:19,320 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69 states to 69 states and 72 transitions. [2020-10-27 14:23:19,321 INFO L78 Accepts]: Start accepts. Automaton has 69 states and 72 transitions. Word has length 59 [2020-10-27 14:23:19,321 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 14:23:19,321 INFO L481 AbstractCegarLoop]: Abstraction has 69 states and 72 transitions. [2020-10-27 14:23:19,321 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-27 14:23:19,321 INFO L276 IsEmpty]: Start isEmpty. Operand 69 states and 72 transitions. [2020-10-27 14:23:19,322 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2020-10-27 14:23:19,322 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 14:23:19,322 INFO L422 BasicCegarLoop]: trace histogram [9, 9, 9, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 14:23:19,323 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-27 14:23:19,323 INFO L429 AbstractCegarLoop]: === Iteration 11 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 14:23:19,323 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 14:23:19,323 INFO L82 PathProgramCache]: Analyzing trace with hash 884848196, now seen corresponding path program 9 times [2020-10-27 14:23:19,324 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 14:23:19,324 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [788205811] [2020-10-27 14:23:19,324 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 14:23:19,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:23:19,352 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:23:19,395 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:23:19,649 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:23:24,360 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:23:24,360 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-10-27 14:23:24,360 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-27 14:23:24,361 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5018 [2020-10-27 14:23:24,361 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:23:24,361 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-27 14:23:24,361 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 42 [2020-10-27 14:23:24,361 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-10-27 14:23:24,361 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:23:24,552 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 14:23:24,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:23:24,555 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:23:24,557 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:23:24,558 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 14:23:24,558 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:23:24,558 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 14:23:24,558 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:23:24,558 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:23:24,559 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:23:24,560 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:23:24,560 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-27 14:23:24,566 INFO L134 CoverageAnalysis]: Checked inductivity of 207 backedges. 0 proven. 81 refuted. 0 times theorem prover too weak. 126 trivial. 0 not checked. [2020-10-27 14:23:24,567 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [788205811] [2020-10-27 14:23:24,567 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 14:23:24,567 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-10-27 14:23:24,567 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [882867305] [2020-10-27 14:23:24,568 INFO L461 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-27 14:23:24,568 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 14:23:24,568 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-27 14:23:24,569 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=88, Unknown=0, NotChecked=0, Total=156 [2020-10-27 14:23:24,569 INFO L87 Difference]: Start difference. First operand 69 states and 72 transitions. Second operand 13 states. [2020-10-27 14:23:24,825 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 14:23:24,825 INFO L93 Difference]: Finished difference Result 129 states and 137 transitions. [2020-10-27 14:23:24,826 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-27 14:23:24,826 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 64 [2020-10-27 14:23:24,826 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 14:23:24,827 INFO L225 Difference]: With dead ends: 129 [2020-10-27 14:23:24,827 INFO L226 Difference]: Without dead ends: 76 [2020-10-27 14:23:24,828 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=68, Invalid=88, Unknown=0, NotChecked=0, Total=156 [2020-10-27 14:23:24,828 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 76 states. [2020-10-27 14:23:24,835 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 76 to 74. [2020-10-27 14:23:24,835 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 74 states. [2020-10-27 14:23:24,838 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74 states to 74 states and 77 transitions. [2020-10-27 14:23:24,839 INFO L78 Accepts]: Start accepts. Automaton has 74 states and 77 transitions. Word has length 64 [2020-10-27 14:23:24,839 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 14:23:24,839 INFO L481 AbstractCegarLoop]: Abstraction has 74 states and 77 transitions. [2020-10-27 14:23:24,839 INFO L482 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-27 14:23:24,839 INFO L276 IsEmpty]: Start isEmpty. Operand 74 states and 77 transitions. [2020-10-27 14:23:24,840 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2020-10-27 14:23:24,840 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 14:23:24,840 INFO L422 BasicCegarLoop]: trace histogram [10, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 14:23:24,841 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-27 14:23:24,841 INFO L429 AbstractCegarLoop]: === Iteration 12 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 14:23:24,841 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 14:23:24,841 INFO L82 PathProgramCache]: Analyzing trace with hash 1808712622, now seen corresponding path program 10 times [2020-10-27 14:23:24,842 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 14:23:24,842 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [593931978] [2020-10-27 14:23:24,842 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 14:23:24,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:23:24,873 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:23:24,917 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:23:24,939 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:23:29,897 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:23:29,897 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 79 [2020-10-27 14:23:29,897 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-27 14:23:29,898 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5034 [2020-10-27 14:23:29,898 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:23:29,898 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-27 14:23:29,898 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 45 [2020-10-27 14:23:29,898 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-10-27 14:23:29,898 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:23:30,084 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 14:23:30,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:23:30,088 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:23:30,090 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:23:30,091 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 14:23:30,091 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:23:30,091 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 14:23:30,091 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:23:30,092 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:23:30,092 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:23:30,092 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:23:30,092 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:23:30,101 INFO L134 CoverageAnalysis]: Checked inductivity of 255 backedges. 0 proven. 100 refuted. 0 times theorem prover too weak. 155 trivial. 0 not checked. [2020-10-27 14:23:30,101 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [593931978] [2020-10-27 14:23:30,101 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 14:23:30,101 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2020-10-27 14:23:30,102 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1196643913] [2020-10-27 14:23:30,102 INFO L461 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-10-27 14:23:30,102 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 14:23:30,103 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-10-27 14:23:30,103 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=80, Invalid=102, Unknown=0, NotChecked=0, Total=182 [2020-10-27 14:23:30,104 INFO L87 Difference]: Start difference. First operand 74 states and 77 transitions. Second operand 14 states. [2020-10-27 14:23:30,316 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 14:23:30,316 INFO L93 Difference]: Finished difference Result 138 states and 146 transitions. [2020-10-27 14:23:30,317 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-10-27 14:23:30,317 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 69 [2020-10-27 14:23:30,317 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 14:23:30,318 INFO L225 Difference]: With dead ends: 138 [2020-10-27 14:23:30,318 INFO L226 Difference]: Without dead ends: 81 [2020-10-27 14:23:30,319 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=80, Invalid=102, Unknown=0, NotChecked=0, Total=182 [2020-10-27 14:23:30,319 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 81 states. [2020-10-27 14:23:30,326 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 81 to 79. [2020-10-27 14:23:30,326 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 79 states. [2020-10-27 14:23:30,327 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 79 states to 79 states and 82 transitions. [2020-10-27 14:23:30,327 INFO L78 Accepts]: Start accepts. Automaton has 79 states and 82 transitions. Word has length 69 [2020-10-27 14:23:30,327 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 14:23:30,327 INFO L481 AbstractCegarLoop]: Abstraction has 79 states and 82 transitions. [2020-10-27 14:23:30,327 INFO L482 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-10-27 14:23:30,327 INFO L276 IsEmpty]: Start isEmpty. Operand 79 states and 82 transitions. [2020-10-27 14:23:30,328 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2020-10-27 14:23:30,328 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 14:23:30,329 INFO L422 BasicCegarLoop]: trace histogram [11, 11, 11, 11, 11, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 14:23:30,329 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-27 14:23:30,329 INFO L429 AbstractCegarLoop]: === Iteration 13 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 14:23:30,329 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 14:23:30,329 INFO L82 PathProgramCache]: Analyzing trace with hash -1045060484, now seen corresponding path program 11 times [2020-10-27 14:23:30,330 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 14:23:30,330 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [344828340] [2020-10-27 14:23:30,330 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 14:23:30,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:23:30,361 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:23:30,390 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:23:30,947 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:23:35,351 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:23:35,351 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 84 [2020-10-27 14:23:35,352 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-27 14:23:35,352 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-10-27 14:23:35,352 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:23:35,352 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-10-27 14:23:35,352 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 48 [2020-10-27 14:23:35,352 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-10-27 14:23:35,352 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:23:35,552 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 14:23:35,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:23:35,557 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:23:35,562 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:23:35,562 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 14:23:35,562 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:23:35,563 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-27 14:23:35,563 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:23:35,563 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:23:35,563 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:23:35,563 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:23:35,564 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:23:35,577 INFO L134 CoverageAnalysis]: Checked inductivity of 308 backedges. 0 proven. 121 refuted. 0 times theorem prover too weak. 187 trivial. 0 not checked. [2020-10-27 14:23:35,578 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [344828340] [2020-10-27 14:23:35,578 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 14:23:35,578 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2020-10-27 14:23:35,578 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2144484987] [2020-10-27 14:23:35,579 INFO L461 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-27 14:23:35,579 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 14:23:35,580 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-27 14:23:35,581 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=93, Invalid=117, Unknown=0, NotChecked=0, Total=210 [2020-10-27 14:23:35,581 INFO L87 Difference]: Start difference. First operand 79 states and 82 transitions. Second operand 15 states. [2020-10-27 14:23:35,914 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 14:23:35,914 INFO L93 Difference]: Finished difference Result 147 states and 155 transitions. [2020-10-27 14:23:35,915 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-27 14:23:35,915 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 74 [2020-10-27 14:23:35,915 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 14:23:35,916 INFO L225 Difference]: With dead ends: 147 [2020-10-27 14:23:35,916 INFO L226 Difference]: Without dead ends: 86 [2020-10-27 14:23:35,918 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=93, Invalid=117, Unknown=0, NotChecked=0, Total=210 [2020-10-27 14:23:35,918 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 86 states. [2020-10-27 14:23:35,940 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 86 to 84. [2020-10-27 14:23:35,940 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 84 states. [2020-10-27 14:23:35,941 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 84 states to 84 states and 87 transitions. [2020-10-27 14:23:35,941 INFO L78 Accepts]: Start accepts. Automaton has 84 states and 87 transitions. Word has length 74 [2020-10-27 14:23:35,941 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 14:23:35,942 INFO L481 AbstractCegarLoop]: Abstraction has 84 states and 87 transitions. [2020-10-27 14:23:35,942 INFO L482 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-27 14:23:35,944 INFO L276 IsEmpty]: Start isEmpty. Operand 84 states and 87 transitions. [2020-10-27 14:23:35,947 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2020-10-27 14:23:35,947 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 14:23:35,948 INFO L422 BasicCegarLoop]: trace histogram [12, 12, 12, 12, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 14:23:35,950 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-27 14:23:35,950 INFO L429 AbstractCegarLoop]: === Iteration 14 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 14:23:35,951 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 14:23:35,951 INFO L82 PathProgramCache]: Analyzing trace with hash 1695044710, now seen corresponding path program 12 times [2020-10-27 14:23:35,951 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 14:23:35,952 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1895168005] [2020-10-27 14:23:35,952 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 14:23:35,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:23:35,995 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:23:36,080 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:23:36,856 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:23:40,983 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:23:40,983 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 89 [2020-10-27 14:23:40,984 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-27 14:23:40,984 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5003 [2020-10-27 14:23:40,984 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:23:40,984 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-10-27 14:23:40,984 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 51 [2020-10-27 14:23:40,984 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-10-27 14:23:40,984 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:23:41,169 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 14:23:41,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:23:41,172 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:23:41,174 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:23:41,176 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 14:23:41,176 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:23:41,176 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 14:23:41,176 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:23:41,176 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:23:41,176 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:23:41,177 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:23:41,177 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:23:41,186 INFO L134 CoverageAnalysis]: Checked inductivity of 366 backedges. 0 proven. 144 refuted. 0 times theorem prover too weak. 222 trivial. 0 not checked. [2020-10-27 14:23:41,186 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1895168005] [2020-10-27 14:23:41,187 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 14:23:41,187 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2020-10-27 14:23:41,188 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [262986715] [2020-10-27 14:23:41,190 INFO L461 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-10-27 14:23:41,191 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 14:23:41,192 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-10-27 14:23:41,193 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=107, Invalid=133, Unknown=0, NotChecked=0, Total=240 [2020-10-27 14:23:41,193 INFO L87 Difference]: Start difference. First operand 84 states and 87 transitions. Second operand 16 states. [2020-10-27 14:23:41,466 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 14:23:41,467 INFO L93 Difference]: Finished difference Result 156 states and 164 transitions. [2020-10-27 14:23:41,467 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-10-27 14:23:41,467 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 79 [2020-10-27 14:23:41,467 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 14:23:41,468 INFO L225 Difference]: With dead ends: 156 [2020-10-27 14:23:41,468 INFO L226 Difference]: Without dead ends: 91 [2020-10-27 14:23:41,469 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=107, Invalid=133, Unknown=0, NotChecked=0, Total=240 [2020-10-27 14:23:41,469 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 91 states. [2020-10-27 14:23:41,475 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 91 to 89. [2020-10-27 14:23:41,475 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 89 states. [2020-10-27 14:23:41,476 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 89 states to 89 states and 92 transitions. [2020-10-27 14:23:41,476 INFO L78 Accepts]: Start accepts. Automaton has 89 states and 92 transitions. Word has length 79 [2020-10-27 14:23:41,476 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 14:23:41,476 INFO L481 AbstractCegarLoop]: Abstraction has 89 states and 92 transitions. [2020-10-27 14:23:41,476 INFO L482 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-10-27 14:23:41,477 INFO L276 IsEmpty]: Start isEmpty. Operand 89 states and 92 transitions. [2020-10-27 14:23:41,477 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2020-10-27 14:23:41,478 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 14:23:41,478 INFO L422 BasicCegarLoop]: trace histogram [13, 13, 13, 13, 13, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 14:23:41,478 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-10-27 14:23:41,478 INFO L429 AbstractCegarLoop]: === Iteration 15 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 14:23:41,478 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 14:23:41,479 INFO L82 PathProgramCache]: Analyzing trace with hash -1392022860, now seen corresponding path program 13 times [2020-10-27 14:23:41,479 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 14:23:41,479 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1060942891] [2020-10-27 14:23:41,479 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 14:23:41,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:23:41,514 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:23:41,581 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:23:41,613 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:23:46,528 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:23:46,528 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 94 [2020-10-27 14:23:46,528 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-27 14:23:46,528 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5027 [2020-10-27 14:23:46,528 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:23:46,528 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-10-27 14:23:46,528 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 54 [2020-10-27 14:23:46,529 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-10-27 14:23:46,529 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:23:46,753 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 14:23:46,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:23:46,756 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:23:46,758 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:23:46,758 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 14:23:46,758 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:23:46,758 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 14:23:46,758 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:23:46,758 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:23:46,759 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:23:46,759 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:23:46,759 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:23:46,767 INFO L134 CoverageAnalysis]: Checked inductivity of 429 backedges. 0 proven. 169 refuted. 0 times theorem prover too weak. 260 trivial. 0 not checked. [2020-10-27 14:23:46,768 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1060942891] [2020-10-27 14:23:46,768 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 14:23:46,768 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17] total 17 [2020-10-27 14:23:46,768 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1959877351] [2020-10-27 14:23:46,769 INFO L461 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-27 14:23:46,769 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 14:23:46,770 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-27 14:23:46,770 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=122, Invalid=150, Unknown=0, NotChecked=0, Total=272 [2020-10-27 14:23:46,770 INFO L87 Difference]: Start difference. First operand 89 states and 92 transitions. Second operand 17 states. [2020-10-27 14:23:47,090 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 14:23:47,090 INFO L93 Difference]: Finished difference Result 165 states and 173 transitions. [2020-10-27 14:23:47,091 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-10-27 14:23:47,091 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 84 [2020-10-27 14:23:47,091 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 14:23:47,092 INFO L225 Difference]: With dead ends: 165 [2020-10-27 14:23:47,092 INFO L226 Difference]: Without dead ends: 96 [2020-10-27 14:23:47,096 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=122, Invalid=150, Unknown=0, NotChecked=0, Total=272 [2020-10-27 14:23:47,096 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 96 states. [2020-10-27 14:23:47,104 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 96 to 94. [2020-10-27 14:23:47,105 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 94 states. [2020-10-27 14:23:47,110 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 94 states to 94 states and 97 transitions. [2020-10-27 14:23:47,110 INFO L78 Accepts]: Start accepts. Automaton has 94 states and 97 transitions. Word has length 84 [2020-10-27 14:23:47,110 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 14:23:47,110 INFO L481 AbstractCegarLoop]: Abstraction has 94 states and 97 transitions. [2020-10-27 14:23:47,110 INFO L482 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-27 14:23:47,111 INFO L276 IsEmpty]: Start isEmpty. Operand 94 states and 97 transitions. [2020-10-27 14:23:47,111 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2020-10-27 14:23:47,111 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 14:23:47,112 INFO L422 BasicCegarLoop]: trace histogram [14, 14, 14, 14, 14, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 14:23:47,112 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-10-27 14:23:47,112 INFO L429 AbstractCegarLoop]: === Iteration 16 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 14:23:47,112 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 14:23:47,112 INFO L82 PathProgramCache]: Analyzing trace with hash 980131102, now seen corresponding path program 14 times [2020-10-27 14:23:47,113 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 14:23:47,113 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [265963022] [2020-10-27 14:23:47,114 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 14:23:47,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:23:47,159 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:23:47,230 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:23:47,947 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:23:52,186 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:23:52,186 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 99 [2020-10-27 14:23:52,186 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-27 14:23:52,187 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5041 [2020-10-27 14:23:52,187 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:23:52,187 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 16 [2020-10-27 14:23:52,187 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 57 [2020-10-27 14:23:52,187 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-10-27 14:23:52,187 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:23:52,424 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 14:23:52,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:23:52,430 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:23:52,433 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:23:52,433 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 14:23:52,433 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:23:52,433 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-27 14:23:52,433 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:23:52,433 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:23:52,434 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:23:52,434 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:23:52,434 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:23:52,445 INFO L134 CoverageAnalysis]: Checked inductivity of 497 backedges. 0 proven. 196 refuted. 0 times theorem prover too weak. 301 trivial. 0 not checked. [2020-10-27 14:23:52,445 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [265963022] [2020-10-27 14:23:52,449 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 14:23:52,449 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18] total 18 [2020-10-27 14:23:52,449 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [628982230] [2020-10-27 14:23:52,450 INFO L461 AbstractCegarLoop]: Interpolant automaton has 18 states [2020-10-27 14:23:52,450 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 14:23:52,451 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2020-10-27 14:23:52,451 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=138, Invalid=168, Unknown=0, NotChecked=0, Total=306 [2020-10-27 14:23:52,451 INFO L87 Difference]: Start difference. First operand 94 states and 97 transitions. Second operand 18 states. [2020-10-27 14:23:52,774 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 14:23:52,774 INFO L93 Difference]: Finished difference Result 174 states and 182 transitions. [2020-10-27 14:23:52,775 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-10-27 14:23:52,775 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 89 [2020-10-27 14:23:52,775 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 14:23:52,776 INFO L225 Difference]: With dead ends: 174 [2020-10-27 14:23:52,776 INFO L226 Difference]: Without dead ends: 101 [2020-10-27 14:23:52,780 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=138, Invalid=168, Unknown=0, NotChecked=0, Total=306 [2020-10-27 14:23:52,781 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 101 states. [2020-10-27 14:23:52,786 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 101 to 99. [2020-10-27 14:23:52,787 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 99 states. [2020-10-27 14:23:52,787 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 99 states to 99 states and 102 transitions. [2020-10-27 14:23:52,788 INFO L78 Accepts]: Start accepts. Automaton has 99 states and 102 transitions. Word has length 89 [2020-10-27 14:23:52,788 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 14:23:52,788 INFO L481 AbstractCegarLoop]: Abstraction has 99 states and 102 transitions. [2020-10-27 14:23:52,788 INFO L482 AbstractCegarLoop]: Interpolant automaton has 18 states. [2020-10-27 14:23:52,788 INFO L276 IsEmpty]: Start isEmpty. Operand 99 states and 102 transitions. [2020-10-27 14:23:52,789 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2020-10-27 14:23:52,789 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 14:23:52,789 INFO L422 BasicCegarLoop]: trace histogram [15, 15, 15, 15, 15, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 14:23:52,789 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-10-27 14:23:52,790 INFO L429 AbstractCegarLoop]: === Iteration 17 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 14:23:52,790 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 14:23:52,790 INFO L82 PathProgramCache]: Analyzing trace with hash -1560868628, now seen corresponding path program 15 times [2020-10-27 14:23:52,791 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 14:23:52,791 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1394495727] [2020-10-27 14:23:52,791 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 14:23:52,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:23:52,832 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:23:52,916 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:23:53,792 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:23:57,865 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:23:57,865 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 104 [2020-10-27 14:23:57,866 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-27 14:23:57,866 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5048 [2020-10-27 14:23:57,866 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:23:57,866 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 17 [2020-10-27 14:23:57,866 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 60 [2020-10-27 14:23:57,866 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 32 [2020-10-27 14:23:57,866 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:23:58,143 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 14:23:58,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:23:58,147 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:23:58,152 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:23:58,153 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 14:23:58,153 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:23:58,153 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-27 14:23:58,154 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:23:58,154 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:23:58,154 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:23:58,154 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:23:58,154 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:23:58,164 INFO L134 CoverageAnalysis]: Checked inductivity of 570 backedges. 0 proven. 225 refuted. 0 times theorem prover too weak. 345 trivial. 0 not checked. [2020-10-27 14:23:58,165 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1394495727] [2020-10-27 14:23:58,165 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 14:23:58,165 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19] total 19 [2020-10-27 14:23:58,165 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [688828671] [2020-10-27 14:23:58,166 INFO L461 AbstractCegarLoop]: Interpolant automaton has 19 states [2020-10-27 14:23:58,166 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 14:23:58,170 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2020-10-27 14:23:58,171 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=155, Invalid=187, Unknown=0, NotChecked=0, Total=342 [2020-10-27 14:23:58,171 INFO L87 Difference]: Start difference. First operand 99 states and 102 transitions. Second operand 19 states. [2020-10-27 14:23:58,491 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 14:23:58,492 INFO L93 Difference]: Finished difference Result 183 states and 191 transitions. [2020-10-27 14:23:58,492 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-10-27 14:23:58,492 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 94 [2020-10-27 14:23:58,492 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 14:23:58,493 INFO L225 Difference]: With dead ends: 183 [2020-10-27 14:23:58,493 INFO L226 Difference]: Without dead ends: 106 [2020-10-27 14:23:58,494 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=155, Invalid=187, Unknown=0, NotChecked=0, Total=342 [2020-10-27 14:23:58,495 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 106 states. [2020-10-27 14:23:58,498 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 106 to 104. [2020-10-27 14:23:58,498 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 104 states. [2020-10-27 14:23:58,499 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 104 states to 104 states and 107 transitions. [2020-10-27 14:23:58,499 INFO L78 Accepts]: Start accepts. Automaton has 104 states and 107 transitions. Word has length 94 [2020-10-27 14:23:58,499 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 14:23:58,499 INFO L481 AbstractCegarLoop]: Abstraction has 104 states and 107 transitions. [2020-10-27 14:23:58,499 INFO L482 AbstractCegarLoop]: Interpolant automaton has 19 states. [2020-10-27 14:23:58,499 INFO L276 IsEmpty]: Start isEmpty. Operand 104 states and 107 transitions. [2020-10-27 14:23:58,500 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2020-10-27 14:23:58,500 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 14:23:58,500 INFO L422 BasicCegarLoop]: trace histogram [16, 16, 16, 16, 16, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 14:23:58,500 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-10-27 14:23:58,500 INFO L429 AbstractCegarLoop]: === Iteration 18 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 14:23:58,501 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 14:23:58,501 INFO L82 PathProgramCache]: Analyzing trace with hash 551853526, now seen corresponding path program 16 times [2020-10-27 14:23:58,501 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 14:23:58,501 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1323111786] [2020-10-27 14:23:58,501 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 14:23:58,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:23:58,543 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:23:58,590 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:24:00,061 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:24:03,540 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:24:03,540 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 109 [2020-10-27 14:24:03,540 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-27 14:24:03,540 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5012 [2020-10-27 14:24:03,540 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:24:03,540 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 18 [2020-10-27 14:24:03,541 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 63 [2020-10-27 14:24:03,541 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 34 [2020-10-27 14:24:03,541 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:24:03,824 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 14:24:03,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:24:03,826 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:24:03,829 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:24:03,829 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 14:24:03,829 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:24:03,829 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 14:24:03,829 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:24:03,830 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:24:03,830 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:24:03,830 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:24:03,830 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:24:03,841 INFO L134 CoverageAnalysis]: Checked inductivity of 648 backedges. 0 proven. 256 refuted. 0 times theorem prover too weak. 392 trivial. 0 not checked. [2020-10-27 14:24:03,842 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1323111786] [2020-10-27 14:24:03,842 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 14:24:03,842 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20] total 20 [2020-10-27 14:24:03,842 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [360183449] [2020-10-27 14:24:03,843 INFO L461 AbstractCegarLoop]: Interpolant automaton has 20 states [2020-10-27 14:24:03,843 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 14:24:03,844 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2020-10-27 14:24:03,845 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=173, Invalid=207, Unknown=0, NotChecked=0, Total=380 [2020-10-27 14:24:03,845 INFO L87 Difference]: Start difference. First operand 104 states and 107 transitions. Second operand 20 states. [2020-10-27 14:24:04,194 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 14:24:04,194 INFO L93 Difference]: Finished difference Result 192 states and 200 transitions. [2020-10-27 14:24:04,194 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2020-10-27 14:24:04,194 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 99 [2020-10-27 14:24:04,195 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 14:24:04,196 INFO L225 Difference]: With dead ends: 192 [2020-10-27 14:24:04,196 INFO L226 Difference]: Without dead ends: 111 [2020-10-27 14:24:04,197 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=173, Invalid=207, Unknown=0, NotChecked=0, Total=380 [2020-10-27 14:24:04,198 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 111 states. [2020-10-27 14:24:04,203 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 111 to 109. [2020-10-27 14:24:04,203 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 109 states. [2020-10-27 14:24:04,204 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 109 states to 109 states and 112 transitions. [2020-10-27 14:24:04,205 INFO L78 Accepts]: Start accepts. Automaton has 109 states and 112 transitions. Word has length 99 [2020-10-27 14:24:04,205 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 14:24:04,205 INFO L481 AbstractCegarLoop]: Abstraction has 109 states and 112 transitions. [2020-10-27 14:24:04,205 INFO L482 AbstractCegarLoop]: Interpolant automaton has 20 states. [2020-10-27 14:24:04,206 INFO L276 IsEmpty]: Start isEmpty. Operand 109 states and 112 transitions. [2020-10-27 14:24:04,207 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2020-10-27 14:24:04,207 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 14:24:04,207 INFO L422 BasicCegarLoop]: trace histogram [17, 17, 17, 17, 17, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 14:24:04,208 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2020-10-27 14:24:04,208 INFO L429 AbstractCegarLoop]: === Iteration 19 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 14:24:04,208 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 14:24:04,208 INFO L82 PathProgramCache]: Analyzing trace with hash -1865908444, now seen corresponding path program 17 times [2020-10-27 14:24:04,209 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 14:24:04,209 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2129752482] [2020-10-27 14:24:04,209 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 14:24:04,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:24:04,247 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:24:04,339 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:24:05,511 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:24:09,308 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:24:09,308 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 114 [2020-10-27 14:24:09,308 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-27 14:24:09,308 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5077 [2020-10-27 14:24:09,308 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:24:09,309 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 19 [2020-10-27 14:24:09,309 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 66 [2020-10-27 14:24:09,309 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 36 [2020-10-27 14:24:09,309 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:24:09,624 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 14:24:09,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:24:09,627 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:24:09,628 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:24:09,629 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 14:24:09,629 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:24:09,629 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 14:24:09,629 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:24:09,629 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:24:09,629 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:24:09,629 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:24:09,629 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:24:09,639 INFO L134 CoverageAnalysis]: Checked inductivity of 731 backedges. 0 proven. 289 refuted. 0 times theorem prover too weak. 442 trivial. 0 not checked. [2020-10-27 14:24:09,639 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2129752482] [2020-10-27 14:24:09,639 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 14:24:09,639 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21] total 21 [2020-10-27 14:24:09,640 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1932128137] [2020-10-27 14:24:09,640 INFO L461 AbstractCegarLoop]: Interpolant automaton has 21 states [2020-10-27 14:24:09,640 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 14:24:09,641 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2020-10-27 14:24:09,641 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=192, Invalid=228, Unknown=0, NotChecked=0, Total=420 [2020-10-27 14:24:09,641 INFO L87 Difference]: Start difference. First operand 109 states and 112 transitions. Second operand 21 states. [2020-10-27 14:24:10,033 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 14:24:10,033 INFO L93 Difference]: Finished difference Result 201 states and 209 transitions. [2020-10-27 14:24:10,034 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-10-27 14:24:10,034 INFO L78 Accepts]: Start accepts. Automaton has 21 states. Word has length 104 [2020-10-27 14:24:10,034 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 14:24:10,035 INFO L225 Difference]: With dead ends: 201 [2020-10-27 14:24:10,035 INFO L226 Difference]: Without dead ends: 116 [2020-10-27 14:24:10,036 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=192, Invalid=228, Unknown=0, NotChecked=0, Total=420 [2020-10-27 14:24:10,036 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 116 states. [2020-10-27 14:24:10,041 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 116 to 114. [2020-10-27 14:24:10,041 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 114 states. [2020-10-27 14:24:10,041 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 114 states to 114 states and 117 transitions. [2020-10-27 14:24:10,042 INFO L78 Accepts]: Start accepts. Automaton has 114 states and 117 transitions. Word has length 104 [2020-10-27 14:24:10,042 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 14:24:10,042 INFO L481 AbstractCegarLoop]: Abstraction has 114 states and 117 transitions. [2020-10-27 14:24:10,042 INFO L482 AbstractCegarLoop]: Interpolant automaton has 21 states. [2020-10-27 14:24:10,042 INFO L276 IsEmpty]: Start isEmpty. Operand 114 states and 117 transitions. [2020-10-27 14:24:10,043 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2020-10-27 14:24:10,043 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 14:24:10,043 INFO L422 BasicCegarLoop]: trace histogram [18, 18, 18, 18, 18, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 14:24:10,044 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2020-10-27 14:24:10,044 INFO L429 AbstractCegarLoop]: === Iteration 20 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 14:24:10,044 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 14:24:10,044 INFO L82 PathProgramCache]: Analyzing trace with hash -597731698, now seen corresponding path program 18 times [2020-10-27 14:24:10,044 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 14:24:10,045 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [378798566] [2020-10-27 14:24:10,045 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 14:24:10,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:24:10,087 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:24:10,164 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:24:11,542 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:24:15,075 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:24:15,076 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 119 [2020-10-27 14:24:15,076 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-27 14:24:15,076 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5005 [2020-10-27 14:24:15,076 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:24:15,076 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 20 [2020-10-27 14:24:15,076 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 69 [2020-10-27 14:24:15,076 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 38 [2020-10-27 14:24:15,076 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:24:15,436 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 14:24:15,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:24:15,440 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:24:15,444 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:24:15,444 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 14:24:15,444 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:24:15,444 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-27 14:24:15,444 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:24:15,444 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:24:15,444 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:24:15,445 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:24:15,445 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:24:15,457 INFO L134 CoverageAnalysis]: Checked inductivity of 819 backedges. 0 proven. 324 refuted. 0 times theorem prover too weak. 495 trivial. 0 not checked. [2020-10-27 14:24:15,458 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [378798566] [2020-10-27 14:24:15,458 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 14:24:15,458 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22] total 22 [2020-10-27 14:24:15,458 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [820454860] [2020-10-27 14:24:15,459 INFO L461 AbstractCegarLoop]: Interpolant automaton has 22 states [2020-10-27 14:24:15,459 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 14:24:15,460 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2020-10-27 14:24:15,460 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=212, Invalid=250, Unknown=0, NotChecked=0, Total=462 [2020-10-27 14:24:15,460 INFO L87 Difference]: Start difference. First operand 114 states and 117 transitions. Second operand 22 states. [2020-10-27 14:24:15,863 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 14:24:15,863 INFO L93 Difference]: Finished difference Result 210 states and 218 transitions. [2020-10-27 14:24:15,864 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2020-10-27 14:24:15,864 INFO L78 Accepts]: Start accepts. Automaton has 22 states. Word has length 109 [2020-10-27 14:24:15,864 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 14:24:15,865 INFO L225 Difference]: With dead ends: 210 [2020-10-27 14:24:15,865 INFO L226 Difference]: Without dead ends: 121 [2020-10-27 14:24:15,866 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=212, Invalid=250, Unknown=0, NotChecked=0, Total=462 [2020-10-27 14:24:15,866 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 121 states. [2020-10-27 14:24:15,874 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 121 to 119. [2020-10-27 14:24:15,874 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 119 states. [2020-10-27 14:24:15,875 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 119 states to 119 states and 122 transitions. [2020-10-27 14:24:15,875 INFO L78 Accepts]: Start accepts. Automaton has 119 states and 122 transitions. Word has length 109 [2020-10-27 14:24:15,876 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 14:24:15,876 INFO L481 AbstractCegarLoop]: Abstraction has 119 states and 122 transitions. [2020-10-27 14:24:15,876 INFO L482 AbstractCegarLoop]: Interpolant automaton has 22 states. [2020-10-27 14:24:15,876 INFO L276 IsEmpty]: Start isEmpty. Operand 119 states and 122 transitions. [2020-10-27 14:24:15,877 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2020-10-27 14:24:15,877 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 14:24:15,877 INFO L422 BasicCegarLoop]: trace histogram [19, 19, 19, 19, 19, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 14:24:15,877 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2020-10-27 14:24:15,877 INFO L429 AbstractCegarLoop]: === Iteration 21 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 14:24:15,878 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 14:24:15,878 INFO L82 PathProgramCache]: Analyzing trace with hash 1690291548, now seen corresponding path program 19 times [2020-10-27 14:24:15,878 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 14:24:15,878 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1266816408] [2020-10-27 14:24:15,878 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 14:24:15,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:24:15,933 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:24:16,047 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:24:17,899 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:24:20,973 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:24:20,973 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 124 [2020-10-27 14:24:20,973 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-27 14:24:20,974 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5058 [2020-10-27 14:24:20,974 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:24:20,974 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 21 [2020-10-27 14:24:20,974 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 72 [2020-10-27 14:24:20,974 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 40 [2020-10-27 14:24:20,974 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:24:21,361 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 14:24:21,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:24:21,364 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:24:21,367 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:24:21,367 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 14:24:21,367 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:24:21,367 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 14:24:21,367 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:24:21,367 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:24:21,367 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:24:21,368 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:24:21,368 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:24:21,378 INFO L134 CoverageAnalysis]: Checked inductivity of 912 backedges. 0 proven. 361 refuted. 0 times theorem prover too weak. 551 trivial. 0 not checked. [2020-10-27 14:24:21,378 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1266816408] [2020-10-27 14:24:21,379 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 14:24:21,379 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23] total 23 [2020-10-27 14:24:21,379 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1851730585] [2020-10-27 14:24:21,379 INFO L461 AbstractCegarLoop]: Interpolant automaton has 23 states [2020-10-27 14:24:21,380 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 14:24:21,380 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2020-10-27 14:24:21,381 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=233, Invalid=273, Unknown=0, NotChecked=0, Total=506 [2020-10-27 14:24:21,381 INFO L87 Difference]: Start difference. First operand 119 states and 122 transitions. Second operand 23 states. [2020-10-27 14:24:21,784 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 14:24:21,785 INFO L93 Difference]: Finished difference Result 219 states and 227 transitions. [2020-10-27 14:24:21,785 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2020-10-27 14:24:21,785 INFO L78 Accepts]: Start accepts. Automaton has 23 states. Word has length 114 [2020-10-27 14:24:21,786 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 14:24:21,787 INFO L225 Difference]: With dead ends: 219 [2020-10-27 14:24:21,787 INFO L226 Difference]: Without dead ends: 126 [2020-10-27 14:24:21,788 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=233, Invalid=273, Unknown=0, NotChecked=0, Total=506 [2020-10-27 14:24:21,789 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 126 states. [2020-10-27 14:24:21,794 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 126 to 124. [2020-10-27 14:24:21,794 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 124 states. [2020-10-27 14:24:21,795 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 124 states to 124 states and 127 transitions. [2020-10-27 14:24:21,795 INFO L78 Accepts]: Start accepts. Automaton has 124 states and 127 transitions. Word has length 114 [2020-10-27 14:24:21,795 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 14:24:21,795 INFO L481 AbstractCegarLoop]: Abstraction has 124 states and 127 transitions. [2020-10-27 14:24:21,795 INFO L482 AbstractCegarLoop]: Interpolant automaton has 23 states. [2020-10-27 14:24:21,795 INFO L276 IsEmpty]: Start isEmpty. Operand 124 states and 127 transitions. [2020-10-27 14:24:21,796 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 120 [2020-10-27 14:24:21,796 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 14:24:21,796 INFO L422 BasicCegarLoop]: trace histogram [20, 20, 20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 14:24:21,797 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2020-10-27 14:24:21,797 INFO L429 AbstractCegarLoop]: === Iteration 22 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 14:24:21,797 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 14:24:21,797 INFO L82 PathProgramCache]: Analyzing trace with hash -3684538, now seen corresponding path program 20 times [2020-10-27 14:24:21,797 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 14:24:21,798 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1157054737] [2020-10-27 14:24:21,798 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 14:24:21,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:24:21,847 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:24:21,941 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:24:24,447 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:24:27,072 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:24:27,073 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 129 [2020-10-27 14:24:27,073 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-27 14:24:27,073 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5245 [2020-10-27 14:24:27,073 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:24:27,073 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 22 [2020-10-27 14:24:27,073 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 75 [2020-10-27 14:24:27,073 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 42 [2020-10-27 14:24:27,073 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:24:27,500 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 14:24:27,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:24:27,505 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:24:27,506 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:24:27,507 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 14:24:27,507 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:24:27,507 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 14:24:27,507 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:24:27,507 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:24:27,507 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:24:27,507 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:24:27,507 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:24:27,518 INFO L134 CoverageAnalysis]: Checked inductivity of 1010 backedges. 0 proven. 400 refuted. 0 times theorem prover too weak. 610 trivial. 0 not checked. [2020-10-27 14:24:27,518 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1157054737] [2020-10-27 14:24:27,518 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 14:24:27,518 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24] total 24 [2020-10-27 14:24:27,518 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [673923625] [2020-10-27 14:24:27,519 INFO L461 AbstractCegarLoop]: Interpolant automaton has 24 states [2020-10-27 14:24:27,519 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 14:24:27,519 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2020-10-27 14:24:27,520 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=255, Invalid=297, Unknown=0, NotChecked=0, Total=552 [2020-10-27 14:24:27,520 INFO L87 Difference]: Start difference. First operand 124 states and 127 transitions. Second operand 24 states. [2020-10-27 14:24:27,962 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 14:24:27,962 INFO L93 Difference]: Finished difference Result 228 states and 236 transitions. [2020-10-27 14:24:27,966 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2020-10-27 14:24:27,966 INFO L78 Accepts]: Start accepts. Automaton has 24 states. Word has length 119 [2020-10-27 14:24:27,966 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 14:24:27,967 INFO L225 Difference]: With dead ends: 228 [2020-10-27 14:24:27,967 INFO L226 Difference]: Without dead ends: 131 [2020-10-27 14:24:27,968 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=255, Invalid=297, Unknown=0, NotChecked=0, Total=552 [2020-10-27 14:24:27,968 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 131 states. [2020-10-27 14:24:27,972 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 131 to 129. [2020-10-27 14:24:27,973 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 129 states. [2020-10-27 14:24:27,973 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 129 states to 129 states and 132 transitions. [2020-10-27 14:24:27,974 INFO L78 Accepts]: Start accepts. Automaton has 129 states and 132 transitions. Word has length 119 [2020-10-27 14:24:27,974 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 14:24:27,974 INFO L481 AbstractCegarLoop]: Abstraction has 129 states and 132 transitions. [2020-10-27 14:24:27,974 INFO L482 AbstractCegarLoop]: Interpolant automaton has 24 states. [2020-10-27 14:24:27,974 INFO L276 IsEmpty]: Start isEmpty. Operand 129 states and 132 transitions. [2020-10-27 14:24:27,975 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2020-10-27 14:24:27,975 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 14:24:27,976 INFO L422 BasicCegarLoop]: trace histogram [21, 21, 21, 21, 21, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 14:24:27,976 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2020-10-27 14:24:27,976 INFO L429 AbstractCegarLoop]: === Iteration 23 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 14:24:27,976 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 14:24:27,976 INFO L82 PathProgramCache]: Analyzing trace with hash -836701292, now seen corresponding path program 21 times [2020-10-27 14:24:27,977 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 14:24:27,977 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1903983620] [2020-10-27 14:24:27,977 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 14:24:28,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:24:28,028 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:24:28,163 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:24:33,084 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:24:33,085 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 134 [2020-10-27 14:24:33,085 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 14:24:33,085 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5077 [2020-10-27 14:24:33,085 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:24:33,085 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 23 [2020-10-27 14:24:33,085 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 34 [2020-10-27 14:24:33,085 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 44 [2020-10-27 14:24:33,085 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:24:33,539 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 14:24:33,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:24:33,542 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:24:33,544 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:24:33,544 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 14:24:33,544 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:24:33,544 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 14:24:33,544 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:24:33,544 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:24:33,544 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:24:33,544 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:24:33,544 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:24:33,555 INFO L134 CoverageAnalysis]: Checked inductivity of 1113 backedges. 0 proven. 441 refuted. 0 times theorem prover too weak. 672 trivial. 0 not checked. [2020-10-27 14:24:33,556 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1903983620] [2020-10-27 14:24:33,556 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 14:24:33,556 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25] total 25 [2020-10-27 14:24:33,557 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [549059348] [2020-10-27 14:24:33,557 INFO L461 AbstractCegarLoop]: Interpolant automaton has 25 states [2020-10-27 14:24:33,557 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 14:24:33,558 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2020-10-27 14:24:33,561 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=278, Invalid=322, Unknown=0, NotChecked=0, Total=600 [2020-10-27 14:24:33,561 INFO L87 Difference]: Start difference. First operand 129 states and 132 transitions. Second operand 25 states. [2020-10-27 14:24:33,941 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 14:24:33,941 INFO L93 Difference]: Finished difference Result 237 states and 245 transitions. [2020-10-27 14:24:33,942 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2020-10-27 14:24:33,942 INFO L78 Accepts]: Start accepts. Automaton has 25 states. Word has length 124 [2020-10-27 14:24:33,943 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 14:24:33,943 INFO L225 Difference]: With dead ends: 237 [2020-10-27 14:24:33,944 INFO L226 Difference]: Without dead ends: 136 [2020-10-27 14:24:33,944 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=278, Invalid=322, Unknown=0, NotChecked=0, Total=600 [2020-10-27 14:24:33,945 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 136 states. [2020-10-27 14:24:33,950 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 136 to 134. [2020-10-27 14:24:33,950 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 134 states. [2020-10-27 14:24:33,951 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 134 states to 134 states and 137 transitions. [2020-10-27 14:24:33,951 INFO L78 Accepts]: Start accepts. Automaton has 134 states and 137 transitions. Word has length 124 [2020-10-27 14:24:33,951 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 14:24:33,951 INFO L481 AbstractCegarLoop]: Abstraction has 134 states and 137 transitions. [2020-10-27 14:24:33,951 INFO L482 AbstractCegarLoop]: Interpolant automaton has 25 states. [2020-10-27 14:24:33,952 INFO L276 IsEmpty]: Start isEmpty. Operand 134 states and 137 transitions. [2020-10-27 14:24:33,953 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 130 [2020-10-27 14:24:33,953 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 14:24:33,953 INFO L422 BasicCegarLoop]: trace histogram [22, 22, 22, 22, 22, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 14:24:33,953 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2020-10-27 14:24:33,953 INFO L429 AbstractCegarLoop]: === Iteration 24 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 14:24:33,954 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 14:24:33,954 INFO L82 PathProgramCache]: Analyzing trace with hash 755625982, now seen corresponding path program 22 times [2020-10-27 14:24:33,954 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 14:24:33,954 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [818213913] [2020-10-27 14:24:33,954 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 14:24:33,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:24:33,995 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:24:34,082 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:24:39,041 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:24:39,041 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 139 [2020-10-27 14:24:39,041 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 14:24:39,041 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5062 [2020-10-27 14:24:39,042 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:24:39,042 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 24 [2020-10-27 14:24:39,042 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 35 [2020-10-27 14:24:39,042 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 46 [2020-10-27 14:24:39,042 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:24:39,552 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 14:24:39,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:24:39,556 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:24:39,557 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:24:39,558 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 14:24:39,558 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:24:39,558 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 14:24:39,558 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:24:39,558 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:24:39,558 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:24:39,558 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:24:39,558 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:24:39,573 INFO L134 CoverageAnalysis]: Checked inductivity of 1221 backedges. 0 proven. 484 refuted. 0 times theorem prover too weak. 737 trivial. 0 not checked. [2020-10-27 14:24:39,573 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [818213913] [2020-10-27 14:24:39,573 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 14:24:39,573 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [26] total 26 [2020-10-27 14:24:39,573 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [208212834] [2020-10-27 14:24:39,574 INFO L461 AbstractCegarLoop]: Interpolant automaton has 26 states [2020-10-27 14:24:39,574 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 14:24:39,574 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2020-10-27 14:24:39,574 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=302, Invalid=348, Unknown=0, NotChecked=0, Total=650 [2020-10-27 14:24:39,574 INFO L87 Difference]: Start difference. First operand 134 states and 137 transitions. Second operand 26 states. [2020-10-27 14:24:39,959 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 14:24:39,959 INFO L93 Difference]: Finished difference Result 246 states and 254 transitions. [2020-10-27 14:24:39,960 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2020-10-27 14:24:39,960 INFO L78 Accepts]: Start accepts. Automaton has 26 states. Word has length 129 [2020-10-27 14:24:39,960 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 14:24:39,961 INFO L225 Difference]: With dead ends: 246 [2020-10-27 14:24:39,962 INFO L226 Difference]: Without dead ends: 141 [2020-10-27 14:24:39,963 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=302, Invalid=348, Unknown=0, NotChecked=0, Total=650 [2020-10-27 14:24:39,963 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 141 states. [2020-10-27 14:24:39,968 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 141 to 139. [2020-10-27 14:24:39,968 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 139 states. [2020-10-27 14:24:39,969 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 139 states to 139 states and 142 transitions. [2020-10-27 14:24:39,969 INFO L78 Accepts]: Start accepts. Automaton has 139 states and 142 transitions. Word has length 129 [2020-10-27 14:24:39,969 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 14:24:39,969 INFO L481 AbstractCegarLoop]: Abstraction has 139 states and 142 transitions. [2020-10-27 14:24:39,969 INFO L482 AbstractCegarLoop]: Interpolant automaton has 26 states. [2020-10-27 14:24:39,970 INFO L276 IsEmpty]: Start isEmpty. Operand 139 states and 142 transitions. [2020-10-27 14:24:39,971 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2020-10-27 14:24:39,971 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 14:24:39,971 INFO L422 BasicCegarLoop]: trace histogram [23, 23, 23, 23, 23, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 14:24:39,971 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2020-10-27 14:24:39,971 INFO L429 AbstractCegarLoop]: === Iteration 25 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 14:24:39,972 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 14:24:39,972 INFO L82 PathProgramCache]: Analyzing trace with hash -47189556, now seen corresponding path program 23 times [2020-10-27 14:24:39,972 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 14:24:39,972 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [342408490] [2020-10-27 14:24:39,972 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 14:24:40,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:24:40,029 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:24:40,138 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:24:45,110 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:24:45,111 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 144 [2020-10-27 14:24:45,111 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 14:24:45,111 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5105 [2020-10-27 14:24:45,111 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:24:45,111 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 25 [2020-10-27 14:24:45,111 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 36 [2020-10-27 14:24:45,111 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 48 [2020-10-27 14:24:45,111 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:24:45,634 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 14:24:45,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:24:45,638 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:24:45,640 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:24:45,640 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 14:24:45,640 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:24:45,640 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 14:24:45,640 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:24:45,641 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:24:45,641 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:24:45,641 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:24:45,641 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:24:45,659 INFO L134 CoverageAnalysis]: Checked inductivity of 1334 backedges. 0 proven. 529 refuted. 0 times theorem prover too weak. 805 trivial. 0 not checked. [2020-10-27 14:24:45,659 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [342408490] [2020-10-27 14:24:45,659 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 14:24:45,659 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [27] total 27 [2020-10-27 14:24:45,659 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1486111448] [2020-10-27 14:24:45,660 INFO L461 AbstractCegarLoop]: Interpolant automaton has 27 states [2020-10-27 14:24:45,660 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 14:24:45,660 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2020-10-27 14:24:45,661 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=327, Invalid=375, Unknown=0, NotChecked=0, Total=702 [2020-10-27 14:24:45,661 INFO L87 Difference]: Start difference. First operand 139 states and 142 transitions. Second operand 27 states. [2020-10-27 14:24:46,128 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 14:24:46,128 INFO L93 Difference]: Finished difference Result 255 states and 263 transitions. [2020-10-27 14:24:46,129 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2020-10-27 14:24:46,129 INFO L78 Accepts]: Start accepts. Automaton has 27 states. Word has length 134 [2020-10-27 14:24:46,129 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 14:24:46,130 INFO L225 Difference]: With dead ends: 255 [2020-10-27 14:24:46,130 INFO L226 Difference]: Without dead ends: 146 [2020-10-27 14:24:46,131 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=327, Invalid=375, Unknown=0, NotChecked=0, Total=702 [2020-10-27 14:24:46,131 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 146 states. [2020-10-27 14:24:46,138 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 146 to 144. [2020-10-27 14:24:46,138 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 144 states. [2020-10-27 14:24:46,140 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 144 states to 144 states and 147 transitions. [2020-10-27 14:24:46,141 INFO L78 Accepts]: Start accepts. Automaton has 144 states and 147 transitions. Word has length 134 [2020-10-27 14:24:46,141 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 14:24:46,141 INFO L481 AbstractCegarLoop]: Abstraction has 144 states and 147 transitions. [2020-10-27 14:24:46,141 INFO L482 AbstractCegarLoop]: Interpolant automaton has 27 states. [2020-10-27 14:24:46,141 INFO L276 IsEmpty]: Start isEmpty. Operand 144 states and 147 transitions. [2020-10-27 14:24:46,143 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2020-10-27 14:24:46,143 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 14:24:46,143 INFO L422 BasicCegarLoop]: trace histogram [24, 24, 24, 24, 24, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 14:24:46,144 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2020-10-27 14:24:46,144 INFO L429 AbstractCegarLoop]: === Iteration 26 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 14:24:46,145 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 14:24:46,145 INFO L82 PathProgramCache]: Analyzing trace with hash 1427230902, now seen corresponding path program 24 times [2020-10-27 14:24:46,145 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 14:24:46,145 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1994008766] [2020-10-27 14:24:46,145 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 14:24:46,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:24:46,203 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:24:46,320 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:24:51,244 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:24:51,244 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 149 [2020-10-27 14:24:51,244 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 14:24:51,244 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5065 [2020-10-27 14:24:51,244 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:24:51,244 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 26 [2020-10-27 14:24:51,244 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 37 [2020-10-27 14:24:51,244 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 50 [2020-10-27 14:24:51,244 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:24:51,774 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 14:24:51,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:24:51,777 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:24:51,779 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:24:51,780 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 14:24:51,780 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:24:51,780 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 14:24:51,780 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:24:51,780 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:24:51,780 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:24:51,781 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:24:51,781 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:24:51,801 INFO L134 CoverageAnalysis]: Checked inductivity of 1452 backedges. 0 proven. 576 refuted. 0 times theorem prover too weak. 876 trivial. 0 not checked. [2020-10-27 14:24:51,802 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1994008766] [2020-10-27 14:24:51,802 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 14:24:51,802 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [28] total 28 [2020-10-27 14:24:51,802 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1596826812] [2020-10-27 14:24:51,803 INFO L461 AbstractCegarLoop]: Interpolant automaton has 28 states [2020-10-27 14:24:51,803 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 14:24:51,803 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2020-10-27 14:24:51,804 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=353, Invalid=403, Unknown=0, NotChecked=0, Total=756 [2020-10-27 14:24:51,804 INFO L87 Difference]: Start difference. First operand 144 states and 147 transitions. Second operand 28 states. [2020-10-27 14:24:52,296 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 14:24:52,296 INFO L93 Difference]: Finished difference Result 264 states and 272 transitions. [2020-10-27 14:24:52,297 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2020-10-27 14:24:52,297 INFO L78 Accepts]: Start accepts. Automaton has 28 states. Word has length 139 [2020-10-27 14:24:52,297 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 14:24:52,298 INFO L225 Difference]: With dead ends: 264 [2020-10-27 14:24:52,298 INFO L226 Difference]: Without dead ends: 151 [2020-10-27 14:24:52,299 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=353, Invalid=403, Unknown=0, NotChecked=0, Total=756 [2020-10-27 14:24:52,299 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 151 states. [2020-10-27 14:24:52,316 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 151 to 149. [2020-10-27 14:24:52,317 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 149 states. [2020-10-27 14:24:52,318 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 149 states to 149 states and 152 transitions. [2020-10-27 14:24:52,318 INFO L78 Accepts]: Start accepts. Automaton has 149 states and 152 transitions. Word has length 139 [2020-10-27 14:24:52,318 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 14:24:52,318 INFO L481 AbstractCegarLoop]: Abstraction has 149 states and 152 transitions. [2020-10-27 14:24:52,318 INFO L482 AbstractCegarLoop]: Interpolant automaton has 28 states. [2020-10-27 14:24:52,318 INFO L276 IsEmpty]: Start isEmpty. Operand 149 states and 152 transitions. [2020-10-27 14:24:52,322 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 145 [2020-10-27 14:24:52,323 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 14:24:52,323 INFO L422 BasicCegarLoop]: trace histogram [25, 25, 25, 25, 25, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 14:24:52,323 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2020-10-27 14:24:52,323 INFO L429 AbstractCegarLoop]: === Iteration 27 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 14:24:52,323 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 14:24:52,324 INFO L82 PathProgramCache]: Analyzing trace with hash 1664141316, now seen corresponding path program 25 times [2020-10-27 14:24:52,324 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 14:24:52,326 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1060919535] [2020-10-27 14:24:52,326 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 14:24:52,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:24:52,396 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:24:52,576 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:24:57,381 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:24:57,381 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 154 [2020-10-27 14:24:57,381 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 14:24:57,381 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5013 [2020-10-27 14:24:57,381 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:24:57,381 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 27 [2020-10-27 14:24:57,382 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 38 [2020-10-27 14:24:57,382 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 52 [2020-10-27 14:24:57,382 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:24:57,937 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 14:24:57,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:24:57,939 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:24:57,943 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:24:57,943 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 14:24:57,943 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:24:57,943 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 14:24:57,944 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:24:57,944 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:24:57,944 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:24:57,944 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:24:57,944 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:24:57,969 INFO L134 CoverageAnalysis]: Checked inductivity of 1575 backedges. 0 proven. 625 refuted. 0 times theorem prover too weak. 950 trivial. 0 not checked. [2020-10-27 14:24:57,969 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1060919535] [2020-10-27 14:24:57,969 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 14:24:57,969 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [29] total 29 [2020-10-27 14:24:57,969 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [671968680] [2020-10-27 14:24:57,970 INFO L461 AbstractCegarLoop]: Interpolant automaton has 29 states [2020-10-27 14:24:57,970 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 14:24:57,971 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2020-10-27 14:24:57,971 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=380, Invalid=432, Unknown=0, NotChecked=0, Total=812 [2020-10-27 14:24:57,972 INFO L87 Difference]: Start difference. First operand 149 states and 152 transitions. Second operand 29 states. [2020-10-27 14:24:58,347 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 14:24:58,347 INFO L93 Difference]: Finished difference Result 273 states and 281 transitions. [2020-10-27 14:24:58,348 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-10-27 14:24:58,348 INFO L78 Accepts]: Start accepts. Automaton has 29 states. Word has length 144 [2020-10-27 14:24:58,348 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 14:24:58,350 INFO L225 Difference]: With dead ends: 273 [2020-10-27 14:24:58,350 INFO L226 Difference]: Without dead ends: 156 [2020-10-27 14:24:58,351 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=380, Invalid=432, Unknown=0, NotChecked=0, Total=812 [2020-10-27 14:24:58,351 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 156 states. [2020-10-27 14:24:58,357 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 156 to 154. [2020-10-27 14:24:58,357 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 154 states. [2020-10-27 14:24:58,358 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 154 states to 154 states and 157 transitions. [2020-10-27 14:24:58,358 INFO L78 Accepts]: Start accepts. Automaton has 154 states and 157 transitions. Word has length 144 [2020-10-27 14:24:58,358 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 14:24:58,358 INFO L481 AbstractCegarLoop]: Abstraction has 154 states and 157 transitions. [2020-10-27 14:24:58,358 INFO L482 AbstractCegarLoop]: Interpolant automaton has 29 states. [2020-10-27 14:24:58,359 INFO L276 IsEmpty]: Start isEmpty. Operand 154 states and 157 transitions. [2020-10-27 14:24:58,359 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 150 [2020-10-27 14:24:58,359 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 14:24:58,360 INFO L422 BasicCegarLoop]: trace histogram [26, 26, 26, 26, 26, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 14:24:58,360 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2020-10-27 14:24:58,360 INFO L429 AbstractCegarLoop]: === Iteration 28 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 14:24:58,360 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 14:24:58,360 INFO L82 PathProgramCache]: Analyzing trace with hash -137664146, now seen corresponding path program 26 times [2020-10-27 14:24:58,360 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 14:24:58,361 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1068891692] [2020-10-27 14:24:58,361 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 14:24:58,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:24:58,405 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:24:58,520 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:25:03,435 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:25:03,435 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 159 [2020-10-27 14:25:03,435 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 14:25:03,435 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5046 [2020-10-27 14:25:03,435 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:25:03,436 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 28 [2020-10-27 14:25:03,436 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 39 [2020-10-27 14:25:03,436 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 54 [2020-10-27 14:25:03,436 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:25:04,055 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 14:25:04,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:25:04,059 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:25:04,061 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:25:04,061 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 14:25:04,062 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:25:04,062 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 14:25:04,062 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:25:04,062 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:25:04,062 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:25:04,062 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:25:04,062 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:25:04,085 INFO L134 CoverageAnalysis]: Checked inductivity of 1703 backedges. 0 proven. 676 refuted. 0 times theorem prover too weak. 1027 trivial. 0 not checked. [2020-10-27 14:25:04,086 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1068891692] [2020-10-27 14:25:04,087 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 14:25:04,087 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [30] total 30 [2020-10-27 14:25:04,087 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1733376384] [2020-10-27 14:25:04,087 INFO L461 AbstractCegarLoop]: Interpolant automaton has 30 states [2020-10-27 14:25:04,088 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 14:25:04,089 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2020-10-27 14:25:04,090 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=408, Invalid=462, Unknown=0, NotChecked=0, Total=870 [2020-10-27 14:25:04,090 INFO L87 Difference]: Start difference. First operand 154 states and 157 transitions. Second operand 30 states. [2020-10-27 14:25:04,556 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 14:25:04,557 INFO L93 Difference]: Finished difference Result 282 states and 290 transitions. [2020-10-27 14:25:04,557 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2020-10-27 14:25:04,557 INFO L78 Accepts]: Start accepts. Automaton has 30 states. Word has length 149 [2020-10-27 14:25:04,558 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 14:25:04,559 INFO L225 Difference]: With dead ends: 282 [2020-10-27 14:25:04,559 INFO L226 Difference]: Without dead ends: 161 [2020-10-27 14:25:04,560 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=408, Invalid=462, Unknown=0, NotChecked=0, Total=870 [2020-10-27 14:25:04,560 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 161 states. [2020-10-27 14:25:04,566 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 161 to 159. [2020-10-27 14:25:04,566 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 159 states. [2020-10-27 14:25:04,567 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 159 states to 159 states and 162 transitions. [2020-10-27 14:25:04,567 INFO L78 Accepts]: Start accepts. Automaton has 159 states and 162 transitions. Word has length 149 [2020-10-27 14:25:04,567 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 14:25:04,568 INFO L481 AbstractCegarLoop]: Abstraction has 159 states and 162 transitions. [2020-10-27 14:25:04,568 INFO L482 AbstractCegarLoop]: Interpolant automaton has 30 states. [2020-10-27 14:25:04,568 INFO L276 IsEmpty]: Start isEmpty. Operand 159 states and 162 transitions. [2020-10-27 14:25:04,569 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2020-10-27 14:25:04,569 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 14:25:04,569 INFO L422 BasicCegarLoop]: trace histogram [27, 27, 27, 27, 27, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 14:25:04,569 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2020-10-27 14:25:04,569 INFO L429 AbstractCegarLoop]: === Iteration 29 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 14:25:04,570 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 14:25:04,570 INFO L82 PathProgramCache]: Analyzing trace with hash 1919383100, now seen corresponding path program 27 times [2020-10-27 14:25:04,571 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 14:25:04,571 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1143440604] [2020-10-27 14:25:04,572 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 14:25:04,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:25:04,642 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:25:04,726 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:25:09,695 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:25:09,695 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 164 [2020-10-27 14:25:09,696 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 14:25:09,696 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5080 [2020-10-27 14:25:09,696 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:25:09,696 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 29 [2020-10-27 14:25:09,696 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 40 [2020-10-27 14:25:09,696 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 56 [2020-10-27 14:25:09,696 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:25:10,438 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 14:25:10,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:25:10,440 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:25:10,443 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:25:10,443 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 14:25:10,443 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:25:10,443 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 14:25:10,444 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:25:10,444 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:25:10,444 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:25:10,444 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:25:10,444 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:25:10,468 INFO L134 CoverageAnalysis]: Checked inductivity of 1836 backedges. 0 proven. 729 refuted. 0 times theorem prover too weak. 1107 trivial. 0 not checked. [2020-10-27 14:25:10,468 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1143440604] [2020-10-27 14:25:10,469 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 14:25:10,469 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [31] total 31 [2020-10-27 14:25:10,469 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1113779921] [2020-10-27 14:25:10,470 INFO L461 AbstractCegarLoop]: Interpolant automaton has 31 states [2020-10-27 14:25:10,470 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 14:25:10,470 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2020-10-27 14:25:10,471 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=437, Invalid=493, Unknown=0, NotChecked=0, Total=930 [2020-10-27 14:25:10,471 INFO L87 Difference]: Start difference. First operand 159 states and 162 transitions. Second operand 31 states. [2020-10-27 14:25:10,938 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 14:25:10,938 INFO L93 Difference]: Finished difference Result 291 states and 299 transitions. [2020-10-27 14:25:10,939 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2020-10-27 14:25:10,939 INFO L78 Accepts]: Start accepts. Automaton has 31 states. Word has length 154 [2020-10-27 14:25:10,939 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 14:25:10,941 INFO L225 Difference]: With dead ends: 291 [2020-10-27 14:25:10,941 INFO L226 Difference]: Without dead ends: 166 [2020-10-27 14:25:10,942 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=437, Invalid=493, Unknown=0, NotChecked=0, Total=930 [2020-10-27 14:25:10,942 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 166 states. [2020-10-27 14:25:10,951 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 166 to 164. [2020-10-27 14:25:10,952 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 164 states. [2020-10-27 14:25:10,953 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 164 states to 164 states and 167 transitions. [2020-10-27 14:25:10,953 INFO L78 Accepts]: Start accepts. Automaton has 164 states and 167 transitions. Word has length 154 [2020-10-27 14:25:10,953 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 14:25:10,953 INFO L481 AbstractCegarLoop]: Abstraction has 164 states and 167 transitions. [2020-10-27 14:25:10,954 INFO L482 AbstractCegarLoop]: Interpolant automaton has 31 states. [2020-10-27 14:25:10,954 INFO L276 IsEmpty]: Start isEmpty. Operand 164 states and 167 transitions. [2020-10-27 14:25:10,955 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 160 [2020-10-27 14:25:10,955 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 14:25:10,955 INFO L422 BasicCegarLoop]: trace histogram [28, 28, 28, 28, 28, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 14:25:10,955 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2020-10-27 14:25:10,955 INFO L429 AbstractCegarLoop]: === Iteration 30 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 14:25:10,956 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 14:25:10,956 INFO L82 PathProgramCache]: Analyzing trace with hash 1679997478, now seen corresponding path program 28 times [2020-10-27 14:25:10,956 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 14:25:10,957 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [919860917] [2020-10-27 14:25:10,957 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 14:25:11,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:25:11,035 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:25:11,260 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:25:16,344 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:25:16,344 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 169 [2020-10-27 14:25:16,344 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 14:25:16,345 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5342 [2020-10-27 14:25:16,345 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:25:16,345 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 30 [2020-10-27 14:25:16,345 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 41 [2020-10-27 14:25:16,345 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 58 [2020-10-27 14:25:16,345 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:25:17,053 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 14:25:17,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:25:17,056 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:25:17,058 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:25:17,059 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 14:25:17,059 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:25:17,059 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 14:25:17,059 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:25:17,059 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:25:17,059 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:25:17,059 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:25:17,060 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:25:17,083 INFO L134 CoverageAnalysis]: Checked inductivity of 1974 backedges. 0 proven. 784 refuted. 0 times theorem prover too weak. 1190 trivial. 0 not checked. [2020-10-27 14:25:17,084 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [919860917] [2020-10-27 14:25:17,084 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 14:25:17,084 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [32] total 32 [2020-10-27 14:25:17,084 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1655459902] [2020-10-27 14:25:17,084 INFO L461 AbstractCegarLoop]: Interpolant automaton has 32 states [2020-10-27 14:25:17,085 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 14:25:17,085 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2020-10-27 14:25:17,086 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=467, Invalid=525, Unknown=0, NotChecked=0, Total=992 [2020-10-27 14:25:17,086 INFO L87 Difference]: Start difference. First operand 164 states and 167 transitions. Second operand 32 states. [2020-10-27 14:25:17,669 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 14:25:17,669 INFO L93 Difference]: Finished difference Result 300 states and 308 transitions. [2020-10-27 14:25:17,669 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2020-10-27 14:25:17,669 INFO L78 Accepts]: Start accepts. Automaton has 32 states. Word has length 159 [2020-10-27 14:25:17,670 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 14:25:17,671 INFO L225 Difference]: With dead ends: 300 [2020-10-27 14:25:17,671 INFO L226 Difference]: Without dead ends: 171 [2020-10-27 14:25:17,673 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=467, Invalid=525, Unknown=0, NotChecked=0, Total=992 [2020-10-27 14:25:17,673 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 171 states. [2020-10-27 14:25:17,682 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 171 to 169. [2020-10-27 14:25:17,682 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 169 states. [2020-10-27 14:25:17,683 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 169 states to 169 states and 172 transitions. [2020-10-27 14:25:17,683 INFO L78 Accepts]: Start accepts. Automaton has 169 states and 172 transitions. Word has length 159 [2020-10-27 14:25:17,684 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 14:25:17,684 INFO L481 AbstractCegarLoop]: Abstraction has 169 states and 172 transitions. [2020-10-27 14:25:17,684 INFO L482 AbstractCegarLoop]: Interpolant automaton has 32 states. [2020-10-27 14:25:17,684 INFO L276 IsEmpty]: Start isEmpty. Operand 169 states and 172 transitions. [2020-10-27 14:25:17,685 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 165 [2020-10-27 14:25:17,685 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 14:25:17,685 INFO L422 BasicCegarLoop]: trace histogram [29, 29, 29, 29, 29, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 14:25:17,685 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2020-10-27 14:25:17,685 INFO L429 AbstractCegarLoop]: === Iteration 31 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 14:25:17,686 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 14:25:17,686 INFO L82 PathProgramCache]: Analyzing trace with hash 1578630260, now seen corresponding path program 29 times [2020-10-27 14:25:17,686 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 14:25:17,686 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [562489369] [2020-10-27 14:25:17,686 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 14:25:17,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:25:17,771 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:25:17,907 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:25:22,769 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:25:22,769 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 174 [2020-10-27 14:25:22,769 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 14:25:22,769 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5029 [2020-10-27 14:25:22,769 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:25:22,769 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 31 [2020-10-27 14:25:22,769 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 42 [2020-10-27 14:25:22,769 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 60 [2020-10-27 14:25:22,769 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:25:23,525 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 14:25:23,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:25:23,529 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:25:23,531 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:25:23,531 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 14:25:23,531 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:25:23,531 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 14:25:23,531 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:25:23,531 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:25:23,532 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:25:23,532 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:25:23,532 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:25:23,556 INFO L134 CoverageAnalysis]: Checked inductivity of 2117 backedges. 0 proven. 841 refuted. 0 times theorem prover too weak. 1276 trivial. 0 not checked. [2020-10-27 14:25:23,557 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [562489369] [2020-10-27 14:25:23,557 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 14:25:23,557 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [33] total 33 [2020-10-27 14:25:23,557 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [915344250] [2020-10-27 14:25:23,558 INFO L461 AbstractCegarLoop]: Interpolant automaton has 33 states [2020-10-27 14:25:23,558 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 14:25:23,558 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2020-10-27 14:25:23,559 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=498, Invalid=558, Unknown=0, NotChecked=0, Total=1056 [2020-10-27 14:25:23,559 INFO L87 Difference]: Start difference. First operand 169 states and 172 transitions. Second operand 33 states. [2020-10-27 14:25:24,160 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 14:25:24,161 INFO L93 Difference]: Finished difference Result 309 states and 317 transitions. [2020-10-27 14:25:24,161 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2020-10-27 14:25:24,161 INFO L78 Accepts]: Start accepts. Automaton has 33 states. Word has length 164 [2020-10-27 14:25:24,162 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 14:25:24,163 INFO L225 Difference]: With dead ends: 309 [2020-10-27 14:25:24,163 INFO L226 Difference]: Without dead ends: 176 [2020-10-27 14:25:24,164 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 29 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=498, Invalid=558, Unknown=0, NotChecked=0, Total=1056 [2020-10-27 14:25:24,165 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 176 states. [2020-10-27 14:25:24,172 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 176 to 174. [2020-10-27 14:25:24,172 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 174 states. [2020-10-27 14:25:24,173 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 174 states to 174 states and 177 transitions. [2020-10-27 14:25:24,174 INFO L78 Accepts]: Start accepts. Automaton has 174 states and 177 transitions. Word has length 164 [2020-10-27 14:25:24,174 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 14:25:24,174 INFO L481 AbstractCegarLoop]: Abstraction has 174 states and 177 transitions. [2020-10-27 14:25:24,174 INFO L482 AbstractCegarLoop]: Interpolant automaton has 33 states. [2020-10-27 14:25:24,174 INFO L276 IsEmpty]: Start isEmpty. Operand 174 states and 177 transitions. [2020-10-27 14:25:24,175 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 170 [2020-10-27 14:25:24,176 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 14:25:24,176 INFO L422 BasicCegarLoop]: trace histogram [30, 30, 30, 30, 30, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 14:25:24,176 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2020-10-27 14:25:24,177 INFO L429 AbstractCegarLoop]: === Iteration 32 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 14:25:24,177 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 14:25:24,178 INFO L82 PathProgramCache]: Analyzing trace with hash -133971234, now seen corresponding path program 30 times [2020-10-27 14:25:24,178 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 14:25:24,178 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1308422497] [2020-10-27 14:25:24,178 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 14:25:24,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:25:24,253 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:25:24,502 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:25:29,501 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:25:29,501 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 179 [2020-10-27 14:25:29,501 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 14:25:29,501 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5278 [2020-10-27 14:25:29,501 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:25:29,501 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 32 [2020-10-27 14:25:29,501 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 43 [2020-10-27 14:25:29,501 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 62 [2020-10-27 14:25:29,501 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:25:30,315 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 14:25:30,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:25:30,318 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:25:30,321 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:25:30,321 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 14:25:30,321 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:25:30,321 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 14:25:30,321 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:25:30,321 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:25:30,321 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:25:30,321 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:25:30,322 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:25:30,341 INFO L134 CoverageAnalysis]: Checked inductivity of 2265 backedges. 0 proven. 900 refuted. 0 times theorem prover too weak. 1365 trivial. 0 not checked. [2020-10-27 14:25:30,341 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1308422497] [2020-10-27 14:25:30,341 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 14:25:30,341 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [34] total 34 [2020-10-27 14:25:30,342 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1640245932] [2020-10-27 14:25:30,342 INFO L461 AbstractCegarLoop]: Interpolant automaton has 34 states [2020-10-27 14:25:30,342 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 14:25:30,343 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2020-10-27 14:25:30,343 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=530, Invalid=592, Unknown=0, NotChecked=0, Total=1122 [2020-10-27 14:25:30,343 INFO L87 Difference]: Start difference. First operand 174 states and 177 transitions. Second operand 34 states. [2020-10-27 14:25:30,834 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 14:25:30,834 INFO L93 Difference]: Finished difference Result 318 states and 326 transitions. [2020-10-27 14:25:30,834 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2020-10-27 14:25:30,835 INFO L78 Accepts]: Start accepts. Automaton has 34 states. Word has length 169 [2020-10-27 14:25:30,835 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 14:25:30,837 INFO L225 Difference]: With dead ends: 318 [2020-10-27 14:25:30,837 INFO L226 Difference]: Without dead ends: 181 [2020-10-27 14:25:30,839 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=530, Invalid=592, Unknown=0, NotChecked=0, Total=1122 [2020-10-27 14:25:30,839 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 181 states. [2020-10-27 14:25:30,845 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 181 to 179. [2020-10-27 14:25:30,845 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 179 states. [2020-10-27 14:25:30,846 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 179 states to 179 states and 182 transitions. [2020-10-27 14:25:30,846 INFO L78 Accepts]: Start accepts. Automaton has 179 states and 182 transitions. Word has length 169 [2020-10-27 14:25:30,846 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 14:25:30,846 INFO L481 AbstractCegarLoop]: Abstraction has 179 states and 182 transitions. [2020-10-27 14:25:30,847 INFO L482 AbstractCegarLoop]: Interpolant automaton has 34 states. [2020-10-27 14:25:30,847 INFO L276 IsEmpty]: Start isEmpty. Operand 179 states and 182 transitions. [2020-10-27 14:25:30,848 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 175 [2020-10-27 14:25:30,848 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 14:25:30,848 INFO L422 BasicCegarLoop]: trace histogram [31, 31, 31, 31, 31, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 14:25:30,848 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2020-10-27 14:25:30,848 INFO L429 AbstractCegarLoop]: === Iteration 33 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 14:25:30,848 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 14:25:30,849 INFO L82 PathProgramCache]: Analyzing trace with hash -628729172, now seen corresponding path program 31 times [2020-10-27 14:25:30,849 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 14:25:30,849 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [165486502] [2020-10-27 14:25:30,849 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 14:25:30,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:25:30,905 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:25:31,062 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:25:36,020 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:25:36,020 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 184 [2020-10-27 14:25:36,020 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 14:25:36,020 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5140 [2020-10-27 14:25:36,021 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:25:36,021 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 33 [2020-10-27 14:25:36,021 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 44 [2020-10-27 14:25:36,021 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 64 [2020-10-27 14:25:36,021 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:25:36,880 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 14:25:36,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:25:36,883 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:25:36,885 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:25:36,885 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 14:25:36,885 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:25:36,885 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 14:25:36,885 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:25:36,886 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:25:36,886 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:25:36,886 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:25:36,886 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:25:36,912 INFO L134 CoverageAnalysis]: Checked inductivity of 2418 backedges. 0 proven. 961 refuted. 0 times theorem prover too weak. 1457 trivial. 0 not checked. [2020-10-27 14:25:36,913 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [165486502] [2020-10-27 14:25:36,913 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 14:25:36,913 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [35] total 35 [2020-10-27 14:25:36,913 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [10397363] [2020-10-27 14:25:36,914 INFO L461 AbstractCegarLoop]: Interpolant automaton has 35 states [2020-10-27 14:25:36,914 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 14:25:36,914 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2020-10-27 14:25:36,915 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=563, Invalid=627, Unknown=0, NotChecked=0, Total=1190 [2020-10-27 14:25:36,915 INFO L87 Difference]: Start difference. First operand 179 states and 182 transitions. Second operand 35 states. [2020-10-27 14:25:37,552 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 14:25:37,552 INFO L93 Difference]: Finished difference Result 327 states and 335 transitions. [2020-10-27 14:25:37,553 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2020-10-27 14:25:37,553 INFO L78 Accepts]: Start accepts. Automaton has 35 states. Word has length 174 [2020-10-27 14:25:37,553 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 14:25:37,555 INFO L225 Difference]: With dead ends: 327 [2020-10-27 14:25:37,555 INFO L226 Difference]: Without dead ends: 186 [2020-10-27 14:25:37,556 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=563, Invalid=627, Unknown=0, NotChecked=0, Total=1190 [2020-10-27 14:25:37,557 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 186 states. [2020-10-27 14:25:37,562 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 186 to 184. [2020-10-27 14:25:37,563 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 184 states. [2020-10-27 14:25:37,563 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 184 states to 184 states and 187 transitions. [2020-10-27 14:25:37,564 INFO L78 Accepts]: Start accepts. Automaton has 184 states and 187 transitions. Word has length 174 [2020-10-27 14:25:37,564 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 14:25:37,564 INFO L481 AbstractCegarLoop]: Abstraction has 184 states and 187 transitions. [2020-10-27 14:25:37,564 INFO L482 AbstractCegarLoop]: Interpolant automaton has 35 states. [2020-10-27 14:25:37,564 INFO L276 IsEmpty]: Start isEmpty. Operand 184 states and 187 transitions. [2020-10-27 14:25:37,565 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 180 [2020-10-27 14:25:37,565 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 14:25:37,565 INFO L422 BasicCegarLoop]: trace histogram [32, 32, 32, 32, 32, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 14:25:37,566 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2020-10-27 14:25:37,566 INFO L429 AbstractCegarLoop]: === Iteration 34 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 14:25:37,566 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 14:25:37,566 INFO L82 PathProgramCache]: Analyzing trace with hash 1616544662, now seen corresponding path program 32 times [2020-10-27 14:25:37,566 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 14:25:37,566 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [110056605] [2020-10-27 14:25:37,567 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 14:25:37,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:25:37,635 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:25:37,709 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:25:42,879 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:25:42,879 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 189 [2020-10-27 14:25:42,879 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 14:25:42,879 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5274 [2020-10-27 14:25:42,880 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:25:42,880 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 34 [2020-10-27 14:25:42,880 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 45 [2020-10-27 14:25:42,880 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 66 [2020-10-27 14:25:42,880 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:25:43,790 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 14:25:43,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:25:43,793 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:25:43,794 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:25:43,795 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 14:25:43,795 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:25:43,795 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 14:25:43,795 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:25:43,795 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:25:43,795 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:25:43,795 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:25:43,795 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:25:43,815 INFO L134 CoverageAnalysis]: Checked inductivity of 2576 backedges. 0 proven. 1024 refuted. 0 times theorem prover too weak. 1552 trivial. 0 not checked. [2020-10-27 14:25:43,815 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [110056605] [2020-10-27 14:25:43,815 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 14:25:43,815 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [36] total 36 [2020-10-27 14:25:43,816 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1529125287] [2020-10-27 14:25:43,816 INFO L461 AbstractCegarLoop]: Interpolant automaton has 36 states [2020-10-27 14:25:43,816 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 14:25:43,816 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2020-10-27 14:25:43,817 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=597, Invalid=663, Unknown=0, NotChecked=0, Total=1260 [2020-10-27 14:25:43,817 INFO L87 Difference]: Start difference. First operand 184 states and 187 transitions. Second operand 36 states. [2020-10-27 14:25:44,474 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 14:25:44,474 INFO L93 Difference]: Finished difference Result 336 states and 344 transitions. [2020-10-27 14:25:44,475 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2020-10-27 14:25:44,475 INFO L78 Accepts]: Start accepts. Automaton has 36 states. Word has length 179 [2020-10-27 14:25:44,475 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 14:25:44,476 INFO L225 Difference]: With dead ends: 336 [2020-10-27 14:25:44,476 INFO L226 Difference]: Without dead ends: 191 [2020-10-27 14:25:44,477 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=597, Invalid=663, Unknown=0, NotChecked=0, Total=1260 [2020-10-27 14:25:44,478 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 191 states. [2020-10-27 14:25:44,487 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 191 to 189. [2020-10-27 14:25:44,487 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 189 states. [2020-10-27 14:25:44,489 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 189 states to 189 states and 192 transitions. [2020-10-27 14:25:44,489 INFO L78 Accepts]: Start accepts. Automaton has 189 states and 192 transitions. Word has length 179 [2020-10-27 14:25:44,489 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 14:25:44,489 INFO L481 AbstractCegarLoop]: Abstraction has 189 states and 192 transitions. [2020-10-27 14:25:44,489 INFO L482 AbstractCegarLoop]: Interpolant automaton has 36 states. [2020-10-27 14:25:44,490 INFO L276 IsEmpty]: Start isEmpty. Operand 189 states and 192 transitions. [2020-10-27 14:25:44,490 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 185 [2020-10-27 14:25:44,491 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 14:25:44,491 INFO L422 BasicCegarLoop]: trace histogram [33, 33, 33, 33, 33, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 14:25:44,491 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2020-10-27 14:25:44,491 INFO L429 AbstractCegarLoop]: === Iteration 35 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 14:25:44,491 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 14:25:44,492 INFO L82 PathProgramCache]: Analyzing trace with hash -587820828, now seen corresponding path program 33 times [2020-10-27 14:25:44,492 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 14:25:44,492 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [218846022] [2020-10-27 14:25:44,492 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 14:25:44,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:25:44,559 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:25:44,737 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:25:49,624 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:25:49,625 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 194 [2020-10-27 14:25:49,625 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 14:25:49,625 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5089 [2020-10-27 14:25:49,625 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:25:49,625 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 35 [2020-10-27 14:25:49,625 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 46 [2020-10-27 14:25:49,625 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 68 [2020-10-27 14:25:49,625 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:25:50,593 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 14:25:50,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:25:50,596 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:25:50,599 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:25:50,599 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 14:25:50,599 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:25:50,599 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 14:25:50,599 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:25:50,599 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:25:50,600 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:25:50,600 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:25:50,600 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:25:50,631 INFO L134 CoverageAnalysis]: Checked inductivity of 2739 backedges. 0 proven. 1089 refuted. 0 times theorem prover too weak. 1650 trivial. 0 not checked. [2020-10-27 14:25:50,632 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [218846022] [2020-10-27 14:25:50,632 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 14:25:50,632 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [37] total 37 [2020-10-27 14:25:50,632 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1826895139] [2020-10-27 14:25:50,632 INFO L461 AbstractCegarLoop]: Interpolant automaton has 37 states [2020-10-27 14:25:50,633 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 14:25:50,633 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2020-10-27 14:25:50,634 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=632, Invalid=700, Unknown=0, NotChecked=0, Total=1332 [2020-10-27 14:25:50,634 INFO L87 Difference]: Start difference. First operand 189 states and 192 transitions. Second operand 37 states. [2020-10-27 14:25:51,210 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 14:25:51,210 INFO L93 Difference]: Finished difference Result 345 states and 353 transitions. [2020-10-27 14:25:51,211 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2020-10-27 14:25:51,211 INFO L78 Accepts]: Start accepts. Automaton has 37 states. Word has length 184 [2020-10-27 14:25:51,211 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 14:25:51,213 INFO L225 Difference]: With dead ends: 345 [2020-10-27 14:25:51,213 INFO L226 Difference]: Without dead ends: 196 [2020-10-27 14:25:51,214 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 33 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=632, Invalid=700, Unknown=0, NotChecked=0, Total=1332 [2020-10-27 14:25:51,215 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 196 states. [2020-10-27 14:25:51,220 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 196 to 194. [2020-10-27 14:25:51,221 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 194 states. [2020-10-27 14:25:51,221 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 194 states to 194 states and 197 transitions. [2020-10-27 14:25:51,222 INFO L78 Accepts]: Start accepts. Automaton has 194 states and 197 transitions. Word has length 184 [2020-10-27 14:25:51,222 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 14:25:51,222 INFO L481 AbstractCegarLoop]: Abstraction has 194 states and 197 transitions. [2020-10-27 14:25:51,222 INFO L482 AbstractCegarLoop]: Interpolant automaton has 37 states. [2020-10-27 14:25:51,222 INFO L276 IsEmpty]: Start isEmpty. Operand 194 states and 197 transitions. [2020-10-27 14:25:51,223 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 190 [2020-10-27 14:25:51,223 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 14:25:51,223 INFO L422 BasicCegarLoop]: trace histogram [34, 34, 34, 34, 34, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 14:25:51,223 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2020-10-27 14:25:51,224 INFO L429 AbstractCegarLoop]: === Iteration 36 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 14:25:51,224 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 14:25:51,224 INFO L82 PathProgramCache]: Analyzing trace with hash -653067186, now seen corresponding path program 34 times [2020-10-27 14:25:51,224 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 14:25:51,224 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1447085032] [2020-10-27 14:25:51,225 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 14:25:51,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:25:51,304 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:25:51,496 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:25:56,600 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:25:56,600 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 199 [2020-10-27 14:25:56,600 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 14:25:56,600 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5330 [2020-10-27 14:25:56,601 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:25:56,601 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 36 [2020-10-27 14:25:56,601 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 47 [2020-10-27 14:25:56,601 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 70 [2020-10-27 14:25:56,601 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:25:57,614 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 14:25:57,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:25:57,617 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:25:57,619 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:25:57,619 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 14:25:57,619 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:25:57,619 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 14:25:57,619 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:25:57,619 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:25:57,619 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:25:57,620 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:25:57,620 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:25:57,640 INFO L134 CoverageAnalysis]: Checked inductivity of 2907 backedges. 0 proven. 1156 refuted. 0 times theorem prover too weak. 1751 trivial. 0 not checked. [2020-10-27 14:25:57,641 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1447085032] [2020-10-27 14:25:57,641 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 14:25:57,641 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [38] total 38 [2020-10-27 14:25:57,641 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1682164542] [2020-10-27 14:25:57,641 INFO L461 AbstractCegarLoop]: Interpolant automaton has 38 states [2020-10-27 14:25:57,642 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 14:25:57,642 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2020-10-27 14:25:57,642 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=668, Invalid=738, Unknown=0, NotChecked=0, Total=1406 [2020-10-27 14:25:57,643 INFO L87 Difference]: Start difference. First operand 194 states and 197 transitions. Second operand 38 states. [2020-10-27 14:25:58,161 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 14:25:58,161 INFO L93 Difference]: Finished difference Result 354 states and 362 transitions. [2020-10-27 14:25:58,161 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2020-10-27 14:25:58,161 INFO L78 Accepts]: Start accepts. Automaton has 38 states. Word has length 189 [2020-10-27 14:25:58,162 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 14:25:58,163 INFO L225 Difference]: With dead ends: 354 [2020-10-27 14:25:58,163 INFO L226 Difference]: Without dead ends: 201 [2020-10-27 14:25:58,164 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=668, Invalid=738, Unknown=0, NotChecked=0, Total=1406 [2020-10-27 14:25:58,165 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 201 states. [2020-10-27 14:25:58,171 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 201 to 199. [2020-10-27 14:25:58,171 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 199 states. [2020-10-27 14:25:58,172 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 199 states to 199 states and 202 transitions. [2020-10-27 14:25:58,172 INFO L78 Accepts]: Start accepts. Automaton has 199 states and 202 transitions. Word has length 189 [2020-10-27 14:25:58,173 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 14:25:58,173 INFO L481 AbstractCegarLoop]: Abstraction has 199 states and 202 transitions. [2020-10-27 14:25:58,173 INFO L482 AbstractCegarLoop]: Interpolant automaton has 38 states. [2020-10-27 14:25:58,173 INFO L276 IsEmpty]: Start isEmpty. Operand 199 states and 202 transitions. [2020-10-27 14:25:58,174 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 195 [2020-10-27 14:25:58,174 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 14:25:58,174 INFO L422 BasicCegarLoop]: trace histogram [35, 35, 35, 35, 35, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 14:25:58,174 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2020-10-27 14:25:58,175 INFO L429 AbstractCegarLoop]: === Iteration 37 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 14:25:58,175 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 14:25:58,175 INFO L82 PathProgramCache]: Analyzing trace with hash 1538039580, now seen corresponding path program 35 times [2020-10-27 14:25:58,175 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 14:25:58,175 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1045337696] [2020-10-27 14:25:58,175 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 14:25:58,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:25:58,262 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:25:58,610 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:26:03,464 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:26:03,464 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 204 [2020-10-27 14:26:03,464 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 14:26:03,464 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5239 [2020-10-27 14:26:03,464 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:26:03,464 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 37 [2020-10-27 14:26:03,464 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 48 [2020-10-27 14:26:03,464 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 72 [2020-10-27 14:26:03,465 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:26:04,512 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 14:26:04,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:26:04,515 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:26:04,517 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:26:04,517 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 14:26:04,517 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:26:04,517 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 14:26:04,517 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:26:04,517 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:26:04,518 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:26:04,518 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:26:04,518 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:26:04,542 INFO L134 CoverageAnalysis]: Checked inductivity of 3080 backedges. 0 proven. 1225 refuted. 0 times theorem prover too weak. 1855 trivial. 0 not checked. [2020-10-27 14:26:04,542 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1045337696] [2020-10-27 14:26:04,542 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 14:26:04,542 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [39] total 39 [2020-10-27 14:26:04,542 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1787045863] [2020-10-27 14:26:04,543 INFO L461 AbstractCegarLoop]: Interpolant automaton has 39 states [2020-10-27 14:26:04,543 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 14:26:04,543 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 39 interpolants. [2020-10-27 14:26:04,544 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=705, Invalid=777, Unknown=0, NotChecked=0, Total=1482 [2020-10-27 14:26:04,544 INFO L87 Difference]: Start difference. First operand 199 states and 202 transitions. Second operand 39 states. [2020-10-27 14:26:05,088 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 14:26:05,089 INFO L93 Difference]: Finished difference Result 363 states and 371 transitions. [2020-10-27 14:26:05,089 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2020-10-27 14:26:05,089 INFO L78 Accepts]: Start accepts. Automaton has 39 states. Word has length 194 [2020-10-27 14:26:05,090 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 14:26:05,091 INFO L225 Difference]: With dead ends: 363 [2020-10-27 14:26:05,091 INFO L226 Difference]: Without dead ends: 206 [2020-10-27 14:26:05,093 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 35 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=705, Invalid=777, Unknown=0, NotChecked=0, Total=1482 [2020-10-27 14:26:05,094 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 206 states. [2020-10-27 14:26:05,100 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 206 to 204. [2020-10-27 14:26:05,100 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 204 states. [2020-10-27 14:26:05,101 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 204 states to 204 states and 207 transitions. [2020-10-27 14:26:05,101 INFO L78 Accepts]: Start accepts. Automaton has 204 states and 207 transitions. Word has length 194 [2020-10-27 14:26:05,102 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 14:26:05,102 INFO L481 AbstractCegarLoop]: Abstraction has 204 states and 207 transitions. [2020-10-27 14:26:05,102 INFO L482 AbstractCegarLoop]: Interpolant automaton has 39 states. [2020-10-27 14:26:05,102 INFO L276 IsEmpty]: Start isEmpty. Operand 204 states and 207 transitions. [2020-10-27 14:26:05,103 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 200 [2020-10-27 14:26:05,103 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 14:26:05,103 INFO L422 BasicCegarLoop]: trace histogram [36, 36, 36, 36, 36, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 14:26:05,103 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2020-10-27 14:26:05,104 INFO L429 AbstractCegarLoop]: === Iteration 38 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 14:26:05,104 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 14:26:05,104 INFO L82 PathProgramCache]: Analyzing trace with hash 1830366470, now seen corresponding path program 36 times [2020-10-27 14:26:05,104 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 14:26:05,104 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [62631956] [2020-10-27 14:26:05,104 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 14:26:05,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:26:05,189 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:26:05,446 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:26:10,238 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:26:10,238 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 209 [2020-10-27 14:26:10,238 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 14:26:10,238 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5086 [2020-10-27 14:26:10,238 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:26:10,238 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 38 [2020-10-27 14:26:10,238 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 49 [2020-10-27 14:26:10,238 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 74 [2020-10-27 14:26:10,239 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:26:11,347 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 14:26:11,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:26:11,350 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:26:11,352 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:26:11,352 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 14:26:11,352 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:26:11,353 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 14:26:11,353 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:26:11,353 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:26:11,353 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:26:11,353 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:26:11,353 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:26:11,378 INFO L134 CoverageAnalysis]: Checked inductivity of 3258 backedges. 0 proven. 1296 refuted. 0 times theorem prover too weak. 1962 trivial. 0 not checked. [2020-10-27 14:26:11,379 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [62631956] [2020-10-27 14:26:11,379 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 14:26:11,379 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [40] total 40 [2020-10-27 14:26:11,379 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [616437843] [2020-10-27 14:26:11,379 INFO L461 AbstractCegarLoop]: Interpolant automaton has 40 states [2020-10-27 14:26:11,380 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 14:26:11,380 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 40 interpolants. [2020-10-27 14:26:11,381 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=743, Invalid=817, Unknown=0, NotChecked=0, Total=1560 [2020-10-27 14:26:11,381 INFO L87 Difference]: Start difference. First operand 204 states and 207 transitions. Second operand 40 states. [2020-10-27 14:26:12,111 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 14:26:12,111 INFO L93 Difference]: Finished difference Result 372 states and 380 transitions. [2020-10-27 14:26:12,111 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2020-10-27 14:26:12,112 INFO L78 Accepts]: Start accepts. Automaton has 40 states. Word has length 199 [2020-10-27 14:26:12,112 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 14:26:12,113 INFO L225 Difference]: With dead ends: 372 [2020-10-27 14:26:12,114 INFO L226 Difference]: Without dead ends: 211 [2020-10-27 14:26:12,115 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=743, Invalid=817, Unknown=0, NotChecked=0, Total=1560 [2020-10-27 14:26:12,115 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 211 states. [2020-10-27 14:26:12,121 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 211 to 209. [2020-10-27 14:26:12,122 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 209 states. [2020-10-27 14:26:12,123 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 209 states to 209 states and 212 transitions. [2020-10-27 14:26:12,123 INFO L78 Accepts]: Start accepts. Automaton has 209 states and 212 transitions. Word has length 199 [2020-10-27 14:26:12,123 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 14:26:12,123 INFO L481 AbstractCegarLoop]: Abstraction has 209 states and 212 transitions. [2020-10-27 14:26:12,123 INFO L482 AbstractCegarLoop]: Interpolant automaton has 40 states. [2020-10-27 14:26:12,123 INFO L276 IsEmpty]: Start isEmpty. Operand 209 states and 212 transitions. [2020-10-27 14:26:12,124 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 205 [2020-10-27 14:26:12,125 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 14:26:12,125 INFO L422 BasicCegarLoop]: trace histogram [37, 37, 37, 37, 37, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 14:26:12,125 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2020-10-27 14:26:12,125 INFO L429 AbstractCegarLoop]: === Iteration 39 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 14:26:12,125 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 14:26:12,126 INFO L82 PathProgramCache]: Analyzing trace with hash 233604436, now seen corresponding path program 37 times [2020-10-27 14:26:12,126 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 14:26:12,126 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [572431380] [2020-10-27 14:26:12,126 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 14:26:12,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:26:12,211 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:26:12,474 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:26:17,647 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:26:17,647 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 214 [2020-10-27 14:26:17,647 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 14:26:17,647 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5471 [2020-10-27 14:26:17,647 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:26:17,647 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 39 [2020-10-27 14:26:17,648 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 50 [2020-10-27 14:26:17,648 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 76 [2020-10-27 14:26:17,648 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:26:18,792 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 14:26:18,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:26:18,796 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:26:18,799 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:26:18,799 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 14:26:18,799 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:26:18,799 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 14:26:18,799 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:26:18,799 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:26:18,799 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:26:18,799 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:26:18,799 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:26:18,846 INFO L134 CoverageAnalysis]: Checked inductivity of 3441 backedges. 0 proven. 1369 refuted. 0 times theorem prover too weak. 2072 trivial. 0 not checked. [2020-10-27 14:26:18,846 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [572431380] [2020-10-27 14:26:18,846 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 14:26:18,846 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [41] total 41 [2020-10-27 14:26:18,846 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1367545946] [2020-10-27 14:26:18,847 INFO L461 AbstractCegarLoop]: Interpolant automaton has 41 states [2020-10-27 14:26:18,847 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 14:26:18,847 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 41 interpolants. [2020-10-27 14:26:18,848 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=782, Invalid=858, Unknown=0, NotChecked=0, Total=1640 [2020-10-27 14:26:18,848 INFO L87 Difference]: Start difference. First operand 209 states and 212 transitions. Second operand 41 states. [2020-10-27 14:26:19,569 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 14:26:19,569 INFO L93 Difference]: Finished difference Result 381 states and 389 transitions. [2020-10-27 14:26:19,570 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2020-10-27 14:26:19,570 INFO L78 Accepts]: Start accepts. Automaton has 41 states. Word has length 204 [2020-10-27 14:26:19,570 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 14:26:19,572 INFO L225 Difference]: With dead ends: 381 [2020-10-27 14:26:19,572 INFO L226 Difference]: Without dead ends: 216 [2020-10-27 14:26:19,574 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=782, Invalid=858, Unknown=0, NotChecked=0, Total=1640 [2020-10-27 14:26:19,574 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 216 states. [2020-10-27 14:26:19,580 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 216 to 214. [2020-10-27 14:26:19,580 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 214 states. [2020-10-27 14:26:19,581 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 214 states to 214 states and 217 transitions. [2020-10-27 14:26:19,581 INFO L78 Accepts]: Start accepts. Automaton has 214 states and 217 transitions. Word has length 204 [2020-10-27 14:26:19,581 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 14:26:19,581 INFO L481 AbstractCegarLoop]: Abstraction has 214 states and 217 transitions. [2020-10-27 14:26:19,582 INFO L482 AbstractCegarLoop]: Interpolant automaton has 41 states. [2020-10-27 14:26:19,582 INFO L276 IsEmpty]: Start isEmpty. Operand 214 states and 217 transitions. [2020-10-27 14:26:19,583 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 210 [2020-10-27 14:26:19,583 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 14:26:19,583 INFO L422 BasicCegarLoop]: trace histogram [38, 38, 38, 38, 38, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 14:26:19,583 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2020-10-27 14:26:19,583 INFO L429 AbstractCegarLoop]: === Iteration 40 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 14:26:19,584 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 14:26:19,584 INFO L82 PathProgramCache]: Analyzing trace with hash 911807934, now seen corresponding path program 38 times [2020-10-27 14:26:19,584 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 14:26:19,584 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [680243944] [2020-10-27 14:26:19,584 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 14:26:19,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:26:19,676 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:26:19,948 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:26:24,777 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:26:24,778 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 219 [2020-10-27 14:26:24,778 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 14:26:24,778 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5141 [2020-10-27 14:26:24,778 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:26:24,778 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 40 [2020-10-27 14:26:24,778 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 51 [2020-10-27 14:26:24,778 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 78 [2020-10-27 14:26:24,778 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:26:25,987 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 14:26:25,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:26:25,989 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:26:25,991 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:26:25,991 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 14:26:25,991 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:26:25,992 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 14:26:25,992 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:26:25,992 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:26:25,992 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:26:25,992 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:26:25,992 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:26:26,017 INFO L134 CoverageAnalysis]: Checked inductivity of 3629 backedges. 0 proven. 1444 refuted. 0 times theorem prover too weak. 2185 trivial. 0 not checked. [2020-10-27 14:26:26,018 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [680243944] [2020-10-27 14:26:26,018 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 14:26:26,018 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [42] total 42 [2020-10-27 14:26:26,018 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1120098646] [2020-10-27 14:26:26,018 INFO L461 AbstractCegarLoop]: Interpolant automaton has 42 states [2020-10-27 14:26:26,019 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 14:26:26,019 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 42 interpolants. [2020-10-27 14:26:26,020 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=822, Invalid=900, Unknown=0, NotChecked=0, Total=1722 [2020-10-27 14:26:26,020 INFO L87 Difference]: Start difference. First operand 214 states and 217 transitions. Second operand 42 states. [2020-10-27 14:26:26,833 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 14:26:26,833 INFO L93 Difference]: Finished difference Result 390 states and 398 transitions. [2020-10-27 14:26:26,834 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2020-10-27 14:26:26,834 INFO L78 Accepts]: Start accepts. Automaton has 42 states. Word has length 209 [2020-10-27 14:26:26,834 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 14:26:26,836 INFO L225 Difference]: With dead ends: 390 [2020-10-27 14:26:26,836 INFO L226 Difference]: Without dead ends: 221 [2020-10-27 14:26:26,838 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 38 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=822, Invalid=900, Unknown=0, NotChecked=0, Total=1722 [2020-10-27 14:26:26,838 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 221 states. [2020-10-27 14:26:26,844 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 221 to 219. [2020-10-27 14:26:26,844 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 219 states. [2020-10-27 14:26:26,845 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 219 states to 219 states and 222 transitions. [2020-10-27 14:26:26,845 INFO L78 Accepts]: Start accepts. Automaton has 219 states and 222 transitions. Word has length 209 [2020-10-27 14:26:26,845 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 14:26:26,845 INFO L481 AbstractCegarLoop]: Abstraction has 219 states and 222 transitions. [2020-10-27 14:26:26,845 INFO L482 AbstractCegarLoop]: Interpolant automaton has 42 states. [2020-10-27 14:26:26,845 INFO L276 IsEmpty]: Start isEmpty. Operand 219 states and 222 transitions. [2020-10-27 14:26:26,846 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 215 [2020-10-27 14:26:26,846 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 14:26:26,847 INFO L422 BasicCegarLoop]: trace histogram [39, 39, 39, 39, 39, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 14:26:26,847 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39 [2020-10-27 14:26:26,847 INFO L429 AbstractCegarLoop]: === Iteration 41 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 14:26:26,847 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 14:26:26,847 INFO L82 PathProgramCache]: Analyzing trace with hash 737821580, now seen corresponding path program 39 times [2020-10-27 14:26:26,848 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 14:26:26,848 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1638499144] [2020-10-27 14:26:26,848 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 14:26:26,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:26:26,919 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:26:27,187 FATAL L256 erpolLogProxyWrapper]: Now shrinking...