/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-crafted/bAnd4.i -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-27 14:03:27,384 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-27 14:03:27,387 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-27 14:03:27,423 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-27 14:03:27,424 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-27 14:03:27,426 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-27 14:03:27,427 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-27 14:03:27,432 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-27 14:03:27,436 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-27 14:03:27,438 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-27 14:03:27,440 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-27 14:03:27,442 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-27 14:03:27,443 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-27 14:03:27,448 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-27 14:03:27,451 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-27 14:03:27,454 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-27 14:03:27,455 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-27 14:03:27,456 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-27 14:03:27,463 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-27 14:03:27,466 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-27 14:03:27,473 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-27 14:03:27,475 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-27 14:03:27,477 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-27 14:03:27,479 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-27 14:03:27,502 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-27 14:03:27,506 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-27 14:03:27,507 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-27 14:03:27,508 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-27 14:03:27,517 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-27 14:03:27,518 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-27 14:03:27,518 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-27 14:03:27,523 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-27 14:03:27,524 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-27 14:03:27,524 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-27 14:03:27,529 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-27 14:03:27,529 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-27 14:03:27,530 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-27 14:03:27,530 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-27 14:03:27,531 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-27 14:03:27,537 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-27 14:03:27,538 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-27 14:03:27,540 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 14:03:27,571 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-27 14:03:27,572 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-27 14:03:27,576 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-27 14:03:27,576 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-27 14:03:27,576 INFO L138 SettingsManager]: * Use SBE=true [2020-10-27 14:03:27,577 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-27 14:03:27,577 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-27 14:03:27,577 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-27 14:03:27,577 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-27 14:03:27,578 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-27 14:03:27,579 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-27 14:03:27,579 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-27 14:03:27,579 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-27 14:03:27,580 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-27 14:03:27,580 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-27 14:03:27,580 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-27 14:03:27,580 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-27 14:03:27,581 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-27 14:03:27,581 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-27 14:03:27,581 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-27 14:03:27,581 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-27 14:03:27,581 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-27 14:03:27,582 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-27 14:03:27,582 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-27 14:03:27,582 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-27 14:03:27,583 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-27 14:03:27,583 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-27 14:03:27,583 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-27 14:03:27,583 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-27 14:03:27,583 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=DEEPEST;log-additional-information=true;unknown-allowed=true; [2020-10-27 14:03:27,993 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-27 14:03:28,037 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-27 14:03:28,041 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-27 14:03:28,042 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-27 14:03:28,045 INFO L275 PluginConnector]: CDTParser initialized [2020-10-27 14:03:28,046 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/array-crafted/bAnd4.i [2020-10-27 14:03:28,134 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/56386f747/e80d0d316211458b8dfbef28d657fe01/FLAG670698f9c [2020-10-27 14:03:28,818 INFO L306 CDTParser]: Found 1 translation units. [2020-10-27 14:03:28,819 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/array-crafted/bAnd4.i [2020-10-27 14:03:28,830 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/56386f747/e80d0d316211458b8dfbef28d657fe01/FLAG670698f9c [2020-10-27 14:03:29,178 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/56386f747/e80d0d316211458b8dfbef28d657fe01 [2020-10-27 14:03:29,185 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-27 14:03:29,197 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-27 14:03:29,199 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-27 14:03:29,199 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-27 14:03:29,203 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-27 14:03:29,204 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 02:03:29" (1/1) ... [2020-10-27 14:03:29,207 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@20cd97de and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 02:03:29, skipping insertion in model container [2020-10-27 14:03:29,208 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 02:03:29" (1/1) ... [2020-10-27 14:03:29,216 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-27 14:03:29,233 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-27 14:03:29,405 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-27 14:03:29,414 INFO L203 MainTranslator]: Completed pre-run [2020-10-27 14:03:29,442 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-27 14:03:29,459 INFO L208 MainTranslator]: Completed translation [2020-10-27 14:03:29,460 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 02:03:29 WrapperNode [2020-10-27 14:03:29,460 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-27 14:03:29,462 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-27 14:03:29,462 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-27 14:03:29,462 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-27 14:03:29,503 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 02:03:29" (1/1) ... [2020-10-27 14:03:29,507 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 02:03:29" (1/1) ... [2020-10-27 14:03:29,523 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 02:03:29" (1/1) ... [2020-10-27 14:03:29,523 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 02:03:29" (1/1) ... [2020-10-27 14:03:29,559 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 02:03:29" (1/1) ... [2020-10-27 14:03:29,570 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 02:03:29" (1/1) ... [2020-10-27 14:03:29,572 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 02:03:29" (1/1) ... [2020-10-27 14:03:29,579 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-27 14:03:29,583 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-27 14:03:29,583 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-27 14:03:29,583 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-27 14:03:29,586 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 02:03:29" (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 14:03:29,680 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-27 14:03:29,680 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-27 14:03:29,680 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-27 14:03:29,681 INFO L138 BoogieDeclarations]: Found implementation of procedure bAnd [2020-10-27 14:03:29,681 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-27 14:03:29,681 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-27 14:03:29,681 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-27 14:03:29,681 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_perror_fail [2020-10-27 14:03:29,681 INFO L130 BoogieDeclarations]: Found specification of procedure __assert [2020-10-27 14:03:29,682 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-27 14:03:29,682 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-27 14:03:29,682 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-27 14:03:29,682 INFO L130 BoogieDeclarations]: Found specification of procedure bAnd [2020-10-27 14:03:29,682 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-27 14:03:29,682 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-27 14:03:29,683 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-27 14:03:29,683 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-27 14:03:29,683 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-27 14:03:29,683 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-27 14:03:29,683 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-27 14:03:30,249 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-27 14:03:30,249 INFO L298 CfgBuilder]: Removed 3 assume(true) statements. [2020-10-27 14:03:30,252 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 02:03:30 BoogieIcfgContainer [2020-10-27 14:03:30,252 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-27 14:03:30,258 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-27 14:03:30,258 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-27 14:03:30,262 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-27 14:03:30,263 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.10 02:03:29" (1/3) ... [2020-10-27 14:03:30,264 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3fb5fb83 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 02:03:30, skipping insertion in model container [2020-10-27 14:03:30,264 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 02:03:29" (2/3) ... [2020-10-27 14:03:30,265 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3fb5fb83 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 02:03:30, skipping insertion in model container [2020-10-27 14:03:30,265 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 02:03:30" (3/3) ... [2020-10-27 14:03:30,267 INFO L111 eAbstractionObserver]: Analyzing ICFG bAnd4.i [2020-10-27 14:03:30,282 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-27 14:03:30,288 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-27 14:03:30,305 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-27 14:03:30,350 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-27 14:03:30,350 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-27 14:03:30,350 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-27 14:03:30,350 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-27 14:03:30,351 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-27 14:03:30,351 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-27 14:03:30,351 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-27 14:03:30,351 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-27 14:03:30,375 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states. [2020-10-27 14:03:30,384 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2020-10-27 14:03:30,385 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 14:03:30,386 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 14:03:30,386 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 14:03:30,396 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 14:03:30,397 INFO L82 PathProgramCache]: Analyzing trace with hash 585288593, now seen corresponding path program 1 times [2020-10-27 14:03:30,408 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 14:03:30,409 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [433614057] [2020-10-27 14:03:30,410 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 14:03:30,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:03:30,599 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:03:30,633 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:03:30,689 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:03:30,784 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:03:30,960 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:03:31,177 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:03:31,178 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 48 [2020-10-27 14:03:31,178 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-27 14:03:31,178 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 606 [2020-10-27 14:03:31,181 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:03:31,181 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:03:31,181 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 37 [2020-10-27 14:03:31,182 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:03:31,182 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-27 14:03:31,277 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 14:03:31,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:03:31,285 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:03:31,292 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:03:31,292 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 14:03:31,293 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:03:31,293 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-27 14:03:31,293 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:03:31,293 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:03:31,293 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:03:31,294 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:03:31,294 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:03:31,301 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-27 14:03:31,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:03:31,304 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:03:31,306 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:03:31,313 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:03:31,314 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 14:03:31,314 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 14:03:31,314 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-27 14:03:31,314 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:03:31,315 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:03:31,315 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-10-27 14:03:31,315 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:03:31,315 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:03:31,318 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-10-27 14:03:31,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:03:31,321 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:03:31,322 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:03:31,329 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:03:31,330 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 14:03:31,330 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 14:03:31,330 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-27 14:03:31,330 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:03:31,331 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:03:31,331 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-10-27 14:03:31,331 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:03:31,331 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:03:31,334 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-10-27 14:03:31,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:03:31,338 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:03:31,344 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:03:31,345 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 14:03:31,345 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:03:31,345 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-27 14:03:31,345 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:03:31,346 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:03:31,346 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-10-27 14:03:31,346 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:03:31,346 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:03:31,355 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2020-10-27 14:03:31,356 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [433614057] [2020-10-27 14:03:31,359 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 14:03:31,360 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-27 14:03:31,361 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2106449830] [2020-10-27 14:03:31,367 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-27 14:03:31,367 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 14:03:31,383 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-27 14:03:31,385 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-27 14:03:31,388 INFO L87 Difference]: Start difference. First operand 35 states. Second operand 3 states. [2020-10-27 14:03:31,528 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 14:03:31,529 INFO L93 Difference]: Finished difference Result 60 states and 80 transitions. [2020-10-27 14:03:31,529 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-27 14:03:31,531 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 34 [2020-10-27 14:03:31,532 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 14:03:31,541 INFO L225 Difference]: With dead ends: 60 [2020-10-27 14:03:31,541 INFO L226 Difference]: Without dead ends: 28 [2020-10-27 14:03:31,545 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 12 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 14:03:31,567 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2020-10-27 14:03:31,594 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 28. [2020-10-27 14:03:31,596 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2020-10-27 14:03:31,597 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 32 transitions. [2020-10-27 14:03:31,600 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 32 transitions. Word has length 34 [2020-10-27 14:03:31,600 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 14:03:31,600 INFO L481 AbstractCegarLoop]: Abstraction has 28 states and 32 transitions. [2020-10-27 14:03:31,600 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-27 14:03:31,601 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 32 transitions. [2020-10-27 14:03:31,603 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2020-10-27 14:03:31,603 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 14:03:31,604 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 14:03:31,604 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-27 14:03:31,604 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 14:03:31,605 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 14:03:31,605 INFO L82 PathProgramCache]: Analyzing trace with hash 1339353745, now seen corresponding path program 1 times [2020-10-27 14:03:31,606 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 14:03:31,606 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1054680321] [2020-10-27 14:03:31,606 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 14:03:31,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:03:31,626 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:03:31,643 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:03:31,665 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:03:31,691 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:03:31,799 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:03:32,884 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:03:32,885 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 48 [2020-10-27 14:03:32,885 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-27 14:03:32,885 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1263 [2020-10-27 14:03:32,885 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:03:32,886 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 14:03:32,886 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 36 [2020-10-27 14:03:32,886 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-27 14:03:32,886 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:03:32,931 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 14:03:32,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:03:32,935 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:03:32,939 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:03:32,939 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 14:03:32,939 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:03:32,940 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-27 14:03:32,940 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:03:32,940 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:03:32,940 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:03:32,940 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:03:32,941 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:03:32,944 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-27 14:03:32,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:03:32,946 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:03:32,948 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:03:32,955 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:03:32,955 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 14:03:32,956 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 14:03:32,956 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-27 14:03:32,956 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:03:32,956 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 14:03:32,957 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 14:03:32,957 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-27 14:03:32,957 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:03:32,966 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-10-27 14:03:32,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:03:32,969 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:03:32,970 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:03:32,979 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:03:32,979 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 14:03:32,979 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 14:03:32,979 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-27 14:03:32,980 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:03:32,980 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 14:03:32,980 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 14:03:32,980 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-27 14:03:32,981 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:03:32,983 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-10-27 14:03:32,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:03:32,988 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:03:32,995 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:03:32,996 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 14:03:32,996 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:03:32,996 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-27 14:03:32,997 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:03:32,997 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 14:03:32,997 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 14:03:32,998 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-27 14:03:32,998 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-27 14:03:33,004 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2020-10-27 14:03:33,004 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1054680321] [2020-10-27 14:03:33,004 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 14:03:33,005 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-27 14:03:33,005 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [518284157] [2020-10-27 14:03:33,007 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-27 14:03:33,007 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 14:03:33,008 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-27 14:03:33,008 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-27 14:03:33,009 INFO L87 Difference]: Start difference. First operand 28 states and 32 transitions. Second operand 4 states. [2020-10-27 14:03:33,136 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 14:03:33,136 INFO L93 Difference]: Finished difference Result 49 states and 59 transitions. [2020-10-27 14:03:33,137 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-27 14:03:33,137 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 34 [2020-10-27 14:03:33,137 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 14:03:33,138 INFO L225 Difference]: With dead ends: 49 [2020-10-27 14:03:33,138 INFO L226 Difference]: Without dead ends: 30 [2020-10-27 14:03:33,140 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-27 14:03:33,140 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2020-10-27 14:03:33,148 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 29. [2020-10-27 14:03:33,148 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2020-10-27 14:03:33,149 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 33 transitions. [2020-10-27 14:03:33,150 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 33 transitions. Word has length 34 [2020-10-27 14:03:33,150 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 14:03:33,150 INFO L481 AbstractCegarLoop]: Abstraction has 29 states and 33 transitions. [2020-10-27 14:03:33,150 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-27 14:03:33,151 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 33 transitions. [2020-10-27 14:03:33,152 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2020-10-27 14:03:33,152 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 14:03:33,152 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 14:03:33,153 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-27 14:03:33,153 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 14:03:33,153 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 14:03:33,153 INFO L82 PathProgramCache]: Analyzing trace with hash 1111227151, now seen corresponding path program 1 times [2020-10-27 14:03:33,154 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 14:03:33,154 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1083957951] [2020-10-27 14:03:33,154 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 14:03:33,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:03:33,169 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:03:33,180 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:03:33,200 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:03:33,218 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:03:33,302 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:03:36,592 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:03:36,592 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 54 [2020-10-27 14:03:36,593 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-27 14:03:36,593 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3427 [2020-10-27 14:03:36,593 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:03:36,593 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-27 14:03:36,594 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 40 [2020-10-27 14:03:36,594 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-10-27 14:03:36,594 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:03:36,632 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 14:03:36,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:03:36,636 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:03:36,640 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:03:36,640 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 14:03:36,641 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:03:36,641 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-27 14:03:36,641 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:03:36,641 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:03:36,642 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:03:36,642 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:03:36,642 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:03:36,645 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-27 14:03:36,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:03:36,648 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:03:36,651 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:03:36,667 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:03:36,668 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-27 14:03:36,668 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 14:03:36,668 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-10-27 14:03:36,669 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:03:36,669 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-27 14:03:36,669 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 14:03:36,669 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-10-27 14:03:36,669 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:03:36,685 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-10-27 14:03:36,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:03:36,687 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:03:36,689 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:03:36,706 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:03:36,707 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-27 14:03:36,707 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 14:03:36,707 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-10-27 14:03:36,707 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:03:36,708 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-27 14:03:36,708 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 14:03:36,708 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-10-27 14:03:36,708 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:03:36,716 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-10-27 14:03:36,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:03:36,724 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:03:36,740 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:03:36,741 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-27 14:03:36,741 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:03:36,741 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-10-27 14:03:36,741 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:03:36,742 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-27 14:03:36,742 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 14:03:36,743 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-10-27 14:03:36,743 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-27 14:03:36,755 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2020-10-27 14:03:36,756 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1083957951] [2020-10-27 14:03:36,756 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 14:03:36,756 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-27 14:03:36,756 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [8905312] [2020-10-27 14:03:36,759 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-27 14:03:36,759 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 14:03:36,760 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-27 14:03:36,760 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-27 14:03:36,760 INFO L87 Difference]: Start difference. First operand 29 states and 33 transitions. Second operand 5 states. [2020-10-27 14:03:36,968 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 14:03:36,968 INFO L93 Difference]: Finished difference Result 52 states and 62 transitions. [2020-10-27 14:03:36,968 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-27 14:03:36,969 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 40 [2020-10-27 14:03:36,969 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 14:03:36,970 INFO L225 Difference]: With dead ends: 52 [2020-10-27 14:03:36,970 INFO L226 Difference]: Without dead ends: 32 [2020-10-27 14:03:36,971 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-10-27 14:03:36,971 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2020-10-27 14:03:36,977 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 31. [2020-10-27 14:03:36,978 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2020-10-27 14:03:36,979 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 35 transitions. [2020-10-27 14:03:36,979 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 35 transitions. Word has length 40 [2020-10-27 14:03:36,980 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 14:03:36,980 INFO L481 AbstractCegarLoop]: Abstraction has 31 states and 35 transitions. [2020-10-27 14:03:36,980 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-27 14:03:36,980 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 35 transitions. [2020-10-27 14:03:36,981 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2020-10-27 14:03:36,982 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 14:03:36,982 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 14:03:36,982 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-27 14:03:36,982 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 14:03:36,983 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 14:03:36,983 INFO L82 PathProgramCache]: Analyzing trace with hash 51803405, now seen corresponding path program 2 times [2020-10-27 14:03:36,983 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 14:03:36,984 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [111287699] [2020-10-27 14:03:36,984 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 14:03:36,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:03:36,997 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:03:37,012 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:03:37,026 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:03:37,042 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:03:37,546 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:03:41,999 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:03:42,000 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 60 [2020-10-27 14:03:42,000 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-27 14:03:42,000 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5005 [2020-10-27 14:03:42,001 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:03:42,001 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 14:03:42,001 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 44 [2020-10-27 14:03:42,002 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 14:03:42,003 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-27 14:03:42,062 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 14:03:42,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:03:42,066 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:03:42,069 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:03:42,070 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 14:03:42,070 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:03:42,070 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-27 14:03:42,070 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:03:42,070 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:03:42,071 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:03:42,071 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:03:42,071 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:03:42,074 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-27 14:03:42,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:03:42,078 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:03:42,080 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:03:42,106 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:03:42,106 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-10-27 14:03:42,106 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 14:03:42,107 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 28 [2020-10-27 14:03:42,107 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:03:42,107 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 14:03:42,108 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 14:03:42,108 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 14:03:42,110 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-27 14:03:42,144 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-10-27 14:03:42,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:03:42,151 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:03:42,154 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:03:42,179 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:03:42,179 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-10-27 14:03:42,179 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 14:03:42,179 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 27 [2020-10-27 14:03:42,180 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:03:42,180 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 14:03:42,180 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 14:03:42,180 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 14:03:42,181 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:03:42,187 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2020-10-27 14:03:42,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:03:42,199 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:03:42,218 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:03:42,218 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-10-27 14:03:42,218 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:03:42,219 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-10-27 14:03:42,219 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:03:42,219 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 14:03:42,220 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 14:03:42,220 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 14:03:42,220 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-27 14:03:42,231 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 12 proven. 24 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2020-10-27 14:03:42,231 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [111287699] [2020-10-27 14:03:42,232 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 14:03:42,232 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-27 14:03:42,232 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [588207875] [2020-10-27 14:03:42,234 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-27 14:03:42,234 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 14:03:42,236 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-27 14:03:42,236 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-10-27 14:03:42,236 INFO L87 Difference]: Start difference. First operand 31 states and 35 transitions. Second operand 6 states. [2020-10-27 14:03:42,530 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 14:03:42,531 INFO L93 Difference]: Finished difference Result 56 states and 66 transitions. [2020-10-27 14:03:42,532 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-27 14:03:42,532 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 46 [2020-10-27 14:03:42,532 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 14:03:42,533 INFO L225 Difference]: With dead ends: 56 [2020-10-27 14:03:42,534 INFO L226 Difference]: Without dead ends: 34 [2020-10-27 14:03:42,536 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2020-10-27 14:03:42,536 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states. [2020-10-27 14:03:42,546 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 33. [2020-10-27 14:03:42,546 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33 states. [2020-10-27 14:03:42,551 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 37 transitions. [2020-10-27 14:03:42,551 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 37 transitions. Word has length 46 [2020-10-27 14:03:42,552 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 14:03:42,552 INFO L481 AbstractCegarLoop]: Abstraction has 33 states and 37 transitions. [2020-10-27 14:03:42,554 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-27 14:03:42,554 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 37 transitions. [2020-10-27 14:03:42,556 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2020-10-27 14:03:42,556 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 14:03:42,556 INFO L422 BasicCegarLoop]: trace histogram [9, 9, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 14:03:42,556 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-27 14:03:42,557 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 14:03:42,558 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 14:03:42,559 INFO L82 PathProgramCache]: Analyzing trace with hash 790018187, now seen corresponding path program 3 times [2020-10-27 14:03:42,559 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 14:03:42,560 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [805421093] [2020-10-27 14:03:42,560 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 14:03:42,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:03:42,584 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:03:42,595 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:03:42,608 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:03:42,624 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:03:43,299 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:03:47,580 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:03:47,581 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 66 [2020-10-27 14:03:47,581 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-27 14:03:47,581 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-10-27 14:03:47,581 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:03:47,582 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-27 14:03:47,582 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 48 [2020-10-27 14:03:47,582 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-27 14:03:47,582 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:03:47,625 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 14:03:47,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:03:47,629 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:03:47,645 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:03:47,646 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 14:03:47,646 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:03:47,646 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-27 14:03:47,646 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:03:47,647 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:03:47,647 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:03:47,649 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:03:47,649 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-27 14:03:47,652 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-27 14:03:47,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:03:47,654 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:03:47,657 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:03:47,688 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:03:47,688 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-10-27 14:03:47,688 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 14:03:47,689 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 33 [2020-10-27 14:03:47,689 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:03:47,690 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-27 14:03:47,690 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 14:03:47,691 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-27 14:03:47,691 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-27 14:03:47,725 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2020-10-27 14:03:47,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:03:47,729 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:03:47,733 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:03:47,765 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:03:47,766 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-10-27 14:03:47,766 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 14:03:47,766 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 37 [2020-10-27 14:03:47,766 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:03:47,767 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-27 14:03:47,767 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 14:03:47,767 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-27 14:03:47,767 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:03:47,779 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2020-10-27 14:03:47,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:03:47,785 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:03:47,804 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:03:47,805 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-10-27 14:03:47,805 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:03:47,805 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-10-27 14:03:47,806 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:03:47,806 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-27 14:03:47,806 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 14:03:47,806 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-27 14:03:47,808 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-27 14:03:47,819 INFO L134 CoverageAnalysis]: Checked inductivity of 114 backedges. 27 proven. 54 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2020-10-27 14:03:47,820 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [805421093] [2020-10-27 14:03:47,820 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 14:03:47,820 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-27 14:03:47,820 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [338327337] [2020-10-27 14:03:47,821 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-27 14:03:47,821 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 14:03:47,821 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-27 14:03:47,822 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-10-27 14:03:47,822 INFO L87 Difference]: Start difference. First operand 33 states and 37 transitions. Second operand 7 states. [2020-10-27 14:03:48,075 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 14:03:48,075 INFO L93 Difference]: Finished difference Result 60 states and 70 transitions. [2020-10-27 14:03:48,076 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-27 14:03:48,076 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 52 [2020-10-27 14:03:48,077 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 14:03:48,078 INFO L225 Difference]: With dead ends: 60 [2020-10-27 14:03:48,078 INFO L226 Difference]: Without dead ends: 36 [2020-10-27 14:03:48,080 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=45, Invalid=65, Unknown=0, NotChecked=0, Total=110 [2020-10-27 14:03:48,081 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2020-10-27 14:03:48,091 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 35. [2020-10-27 14:03:48,092 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2020-10-27 14:03:48,094 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 39 transitions. [2020-10-27 14:03:48,094 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 39 transitions. Word has length 52 [2020-10-27 14:03:48,094 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 14:03:48,095 INFO L481 AbstractCegarLoop]: Abstraction has 35 states and 39 transitions. [2020-10-27 14:03:48,095 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-27 14:03:48,097 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 39 transitions. [2020-10-27 14:03:48,098 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2020-10-27 14:03:48,099 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 14:03:48,099 INFO L422 BasicCegarLoop]: trace histogram [12, 12, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 14:03:48,099 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-27 14:03:48,099 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 14:03:48,100 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 14:03:48,100 INFO L82 PathProgramCache]: Analyzing trace with hash -804838007, now seen corresponding path program 4 times [2020-10-27 14:03:48,101 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 14:03:48,101 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [681497315] [2020-10-27 14:03:48,101 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 14:03:48,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:03:48,115 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:03:48,127 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:03:48,146 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:03:48,167 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:03:49,211 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:03:53,117 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:03:53,117 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 72 [2020-10-27 14:03:53,117 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-27 14:03:53,117 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5004 [2020-10-27 14:03:53,118 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:03:53,118 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-27 14:03:53,118 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 52 [2020-10-27 14:03:53,118 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-27 14:03:53,118 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:03:53,167 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 14:03:53,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:03:53,171 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:03:53,174 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:03:53,174 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 14:03:53,174 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:03:53,175 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 14:03:53,175 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:03:53,175 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:03:53,175 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:03:53,175 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:03:53,176 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:03:53,178 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-27 14:03:53,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:03:53,180 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:03:53,183 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:03:53,209 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:03:53,210 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-10-27 14:03:53,210 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 14:03:53,210 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 29 [2020-10-27 14:03:53,210 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:03:53,211 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-27 14:03:53,211 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 14:03:53,211 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-27 14:03:53,211 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:03:53,255 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-10-27 14:03:53,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:03:53,258 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:03:53,260 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:03:53,285 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:03:53,286 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-10-27 14:03:53,286 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 14:03:53,286 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 28 [2020-10-27 14:03:53,286 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:03:53,287 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-27 14:03:53,287 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 14:03:53,287 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-27 14:03:53,287 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-27 14:03:53,300 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-10-27 14:03:53,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:03:53,310 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:03:53,341 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:03:53,341 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-10-27 14:03:53,341 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:03:53,341 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 32 [2020-10-27 14:03:53,342 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:03:53,342 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-27 14:03:53,342 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 14:03:53,342 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-27 14:03:53,342 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:03:53,357 INFO L134 CoverageAnalysis]: Checked inductivity of 183 backedges. 48 proven. 96 refuted. 0 times theorem prover too weak. 39 trivial. 0 not checked. [2020-10-27 14:03:53,357 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [681497315] [2020-10-27 14:03:53,359 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 14:03:53,359 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-27 14:03:53,359 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [925757515] [2020-10-27 14:03:53,362 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-27 14:03:53,362 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 14:03:53,363 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-27 14:03:53,363 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-10-27 14:03:53,364 INFO L87 Difference]: Start difference. First operand 35 states and 39 transitions. Second operand 8 states. [2020-10-27 14:03:53,616 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 14:03:53,616 INFO L93 Difference]: Finished difference Result 64 states and 74 transitions. [2020-10-27 14:03:53,617 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-27 14:03:53,617 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 58 [2020-10-27 14:03:53,617 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 14:03:53,619 INFO L225 Difference]: With dead ends: 64 [2020-10-27 14:03:53,619 INFO L226 Difference]: Without dead ends: 38 [2020-10-27 14:03:53,620 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=63, Invalid=93, Unknown=0, NotChecked=0, Total=156 [2020-10-27 14:03:53,620 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2020-10-27 14:03:53,629 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 37. [2020-10-27 14:03:53,629 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37 states. [2020-10-27 14:03:53,630 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 41 transitions. [2020-10-27 14:03:53,630 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 41 transitions. Word has length 58 [2020-10-27 14:03:53,631 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 14:03:53,631 INFO L481 AbstractCegarLoop]: Abstraction has 37 states and 41 transitions. [2020-10-27 14:03:53,631 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-27 14:03:53,633 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 41 transitions. [2020-10-27 14:03:53,634 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2020-10-27 14:03:53,636 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 14:03:53,636 INFO L422 BasicCegarLoop]: trace histogram [15, 15, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 14:03:53,636 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-27 14:03:53,636 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 14:03:53,637 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 14:03:53,637 INFO L82 PathProgramCache]: Analyzing trace with hash 1925848071, now seen corresponding path program 5 times [2020-10-27 14:03:53,637 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 14:03:53,637 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [73244751] [2020-10-27 14:03:53,638 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 14:03:53,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:03:53,648 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:03:53,659 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:03:53,673 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:03:53,689 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:03:54,890 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:03:58,647 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:03:58,647 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 78 [2020-10-27 14:03:58,648 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-27 14:03:58,648 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-10-27 14:03:58,648 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:03:58,648 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-27 14:03:58,648 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 56 [2020-10-27 14:03:58,648 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-27 14:03:58,649 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:03:58,701 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 14:03:58,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:03:58,705 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:03:58,709 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:03:58,709 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 14:03:58,709 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:03:58,709 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-27 14:03:58,709 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:03:58,710 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:03:58,710 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:03:58,710 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:03:58,710 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:03:58,713 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-27 14:03:58,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:03:58,715 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:03:58,718 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:03:58,758 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:03:58,759 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-10-27 14:03:58,759 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 14:03:58,759 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 43 [2020-10-27 14:03:58,759 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:03:58,759 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-27 14:03:58,760 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 14:03:58,760 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-27 14:03:58,760 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:03:58,822 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2020-10-27 14:03:58,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:03:58,828 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:03:58,830 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:03:58,860 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:03:58,861 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-10-27 14:03:58,861 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 14:03:58,861 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 33 [2020-10-27 14:03:58,861 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:03:58,862 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-27 14:03:58,862 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 14:03:58,862 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-27 14:03:58,862 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:03:58,877 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-10-27 14:03:58,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:03:58,883 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:03:58,904 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:03:58,905 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-10-27 14:03:58,905 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:03:58,905 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-10-27 14:03:58,905 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:03:58,906 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-27 14:03:58,906 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 14:03:58,906 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-27 14:03:58,906 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:03:58,923 INFO L134 CoverageAnalysis]: Checked inductivity of 270 backedges. 75 proven. 150 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2020-10-27 14:03:58,923 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [73244751] [2020-10-27 14:03:58,923 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 14:03:58,924 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-10-27 14:03:58,924 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [756621348] [2020-10-27 14:03:58,924 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-27 14:03:58,925 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 14:03:58,925 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-27 14:03:58,926 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2020-10-27 14:03:58,926 INFO L87 Difference]: Start difference. First operand 37 states and 41 transitions. Second operand 9 states. [2020-10-27 14:03:59,242 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 14:03:59,242 INFO L93 Difference]: Finished difference Result 68 states and 78 transitions. [2020-10-27 14:03:59,242 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-27 14:03:59,243 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 64 [2020-10-27 14:03:59,243 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 14:03:59,244 INFO L225 Difference]: With dead ends: 68 [2020-10-27 14:03:59,244 INFO L226 Difference]: Without dead ends: 40 [2020-10-27 14:03:59,245 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=84, Invalid=126, Unknown=0, NotChecked=0, Total=210 [2020-10-27 14:03:59,246 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states. [2020-10-27 14:03:59,251 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 39. [2020-10-27 14:03:59,251 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39 states. [2020-10-27 14:03:59,252 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 43 transitions. [2020-10-27 14:03:59,253 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 43 transitions. Word has length 64 [2020-10-27 14:03:59,253 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 14:03:59,253 INFO L481 AbstractCegarLoop]: Abstraction has 39 states and 43 transitions. [2020-10-27 14:03:59,253 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-27 14:03:59,253 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 43 transitions. [2020-10-27 14:03:59,254 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2020-10-27 14:03:59,254 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 14:03:59,255 INFO L422 BasicCegarLoop]: trace histogram [18, 18, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 14:03:59,255 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-27 14:03:59,255 INFO L429 AbstractCegarLoop]: === Iteration 8 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 14:03:59,255 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 14:03:59,256 INFO L82 PathProgramCache]: Analyzing trace with hash -1118176251, now seen corresponding path program 6 times [2020-10-27 14:03:59,256 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 14:03:59,256 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1030630869] [2020-10-27 14:03:59,256 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 14:03:59,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:03:59,268 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:03:59,281 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:03:59,298 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:03:59,316 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:04:00,832 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:04:04,267 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:04:04,267 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 84 [2020-10-27 14:04:04,267 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-27 14:04:04,267 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-10-27 14:04:04,268 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:04:04,268 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-27 14:04:04,268 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 60 [2020-10-27 14:04:04,268 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-27 14:04:04,268 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:04:04,336 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 14:04:04,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:04:04,340 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:04:04,343 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:04:04,343 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 14:04:04,343 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:04:04,343 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 14:04:04,344 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:04:04,344 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:04:04,344 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:04:04,344 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:04:04,344 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:04:04,347 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-27 14:04:04,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:04:04,349 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:04:04,353 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:04:04,387 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:04:04,387 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-27 14:04:04,387 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 14:04:04,388 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 38 [2020-10-27 14:04:04,388 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:04:04,388 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-27 14:04:04,388 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 14:04:04,388 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-27 14:04:04,389 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:04:04,466 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2020-10-27 14:04:04,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:04:04,468 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:04:04,471 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:04:04,507 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:04:04,508 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-27 14:04:04,508 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 14:04:04,508 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 39 [2020-10-27 14:04:04,508 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:04:04,509 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-27 14:04:04,509 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 14:04:04,509 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-27 14:04:04,509 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:04:04,515 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2020-10-27 14:04:04,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:04:04,522 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:04:04,573 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:04:04,573 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-27 14:04:04,573 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:04:04,573 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 52 [2020-10-27 14:04:04,573 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:04:04,574 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-27 14:04:04,576 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 14:04:04,576 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-27 14:04:04,576 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-27 14:04:04,603 INFO L134 CoverageAnalysis]: Checked inductivity of 375 backedges. 108 proven. 216 refuted. 0 times theorem prover too weak. 51 trivial. 0 not checked. [2020-10-27 14:04:04,604 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1030630869] [2020-10-27 14:04:04,604 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 14:04:04,604 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-10-27 14:04:04,605 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1957459307] [2020-10-27 14:04:04,605 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-27 14:04:04,605 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 14:04:04,606 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-27 14:04:04,609 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2020-10-27 14:04:04,610 INFO L87 Difference]: Start difference. First operand 39 states and 43 transitions. Second operand 10 states. [2020-10-27 14:04:05,132 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 14:04:05,133 INFO L93 Difference]: Finished difference Result 72 states and 82 transitions. [2020-10-27 14:04:05,133 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-27 14:04:05,133 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 70 [2020-10-27 14:04:05,133 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 14:04:05,134 INFO L225 Difference]: With dead ends: 72 [2020-10-27 14:04:05,134 INFO L226 Difference]: Without dead ends: 42 [2020-10-27 14:04:05,135 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=108, Invalid=164, Unknown=0, NotChecked=0, Total=272 [2020-10-27 14:04:05,136 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2020-10-27 14:04:05,142 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 41. [2020-10-27 14:04:05,142 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 41 states. [2020-10-27 14:04:05,143 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 45 transitions. [2020-10-27 14:04:05,143 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 45 transitions. Word has length 70 [2020-10-27 14:04:05,144 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 14:04:05,144 INFO L481 AbstractCegarLoop]: Abstraction has 41 states and 45 transitions. [2020-10-27 14:04:05,144 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-27 14:04:05,144 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 45 transitions. [2020-10-27 14:04:05,145 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2020-10-27 14:04:05,145 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 14:04:05,145 INFO L422 BasicCegarLoop]: trace histogram [21, 21, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 14:04:05,146 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-27 14:04:05,146 INFO L429 AbstractCegarLoop]: === Iteration 9 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 14:04:05,146 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 14:04:05,147 INFO L82 PathProgramCache]: Analyzing trace with hash -2067192445, now seen corresponding path program 7 times [2020-10-27 14:04:05,147 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 14:04:05,147 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1317869739] [2020-10-27 14:04:05,147 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 14:04:05,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:04:05,161 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:04:05,173 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:04:05,189 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:04:05,208 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:04:07,102 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:04:10,158 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:04:10,158 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 90 [2020-10-27 14:04:10,158 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-27 14:04:10,159 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4999 [2020-10-27 14:04:10,159 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:04:10,159 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-27 14:04:10,159 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 64 [2020-10-27 14:04:10,159 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-27 14:04:10,159 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:04:10,190 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 14:04:10,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:04:10,193 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:04:10,196 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:04:10,196 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 14:04:10,196 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:04:10,196 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 14:04:10,197 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:04:10,197 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:04:10,197 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:04:10,197 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:04:10,197 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:04:10,199 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-27 14:04:10,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:04:10,202 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:04:10,205 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:04:10,243 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:04:10,244 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 24 [2020-10-27 14:04:10,244 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 14:04:10,244 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 41 [2020-10-27 14:04:10,244 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:04:10,245 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-27 14:04:10,245 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 14:04:10,245 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-27 14:04:10,245 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:04:10,340 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-10-27 14:04:10,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:04:10,343 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:04:10,345 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:04:10,383 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:04:10,383 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 24 [2020-10-27 14:04:10,383 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 14:04:10,383 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 39 [2020-10-27 14:04:10,384 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:04:10,384 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-27 14:04:10,384 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 14:04:10,384 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-27 14:04:10,384 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:04:10,390 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2020-10-27 14:04:10,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:04:10,397 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:04:10,425 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:04:10,426 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 24 [2020-10-27 14:04:10,426 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:04:10,426 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 30 [2020-10-27 14:04:10,427 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:04:10,427 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-27 14:04:10,427 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 14:04:10,427 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-27 14:04:10,427 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:04:10,442 INFO L134 CoverageAnalysis]: Checked inductivity of 498 backedges. 147 proven. 294 refuted. 0 times theorem prover too weak. 57 trivial. 0 not checked. [2020-10-27 14:04:10,442 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1317869739] [2020-10-27 14:04:10,442 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 14:04:10,443 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-10-27 14:04:10,443 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [310847281] [2020-10-27 14:04:10,443 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-27 14:04:10,444 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 14:04:10,444 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-27 14:04:10,444 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-10-27 14:04:10,445 INFO L87 Difference]: Start difference. First operand 41 states and 45 transitions. Second operand 11 states. [2020-10-27 14:04:10,890 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 14:04:10,890 INFO L93 Difference]: Finished difference Result 76 states and 86 transitions. [2020-10-27 14:04:10,891 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-27 14:04:10,891 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 76 [2020-10-27 14:04:10,891 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 14:04:10,892 INFO L225 Difference]: With dead ends: 76 [2020-10-27 14:04:10,892 INFO L226 Difference]: Without dead ends: 44 [2020-10-27 14:04:10,893 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=135, Invalid=207, Unknown=0, NotChecked=0, Total=342 [2020-10-27 14:04:10,894 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2020-10-27 14:04:10,899 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 43. [2020-10-27 14:04:10,899 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 43 states. [2020-10-27 14:04:10,900 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 47 transitions. [2020-10-27 14:04:10,901 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 47 transitions. Word has length 76 [2020-10-27 14:04:10,901 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 14:04:10,901 INFO L481 AbstractCegarLoop]: Abstraction has 43 states and 47 transitions. [2020-10-27 14:04:10,901 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-27 14:04:10,901 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 47 transitions. [2020-10-27 14:04:10,902 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2020-10-27 14:04:10,903 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 14:04:10,903 INFO L422 BasicCegarLoop]: trace histogram [24, 24, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 14:04:10,903 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-27 14:04:10,903 INFO L429 AbstractCegarLoop]: === Iteration 10 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 14:04:10,904 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 14:04:10,904 INFO L82 PathProgramCache]: Analyzing trace with hash 1665267841, now seen corresponding path program 8 times [2020-10-27 14:04:10,904 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 14:04:10,904 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [721237183] [2020-10-27 14:04:10,904 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 14:04:10,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:04:10,916 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:04:10,925 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:04:10,936 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:04:10,949 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:04:12,540 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:04:15,918 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:04:15,918 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 96 [2020-10-27 14:04:15,918 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-27 14:04:15,919 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5004 [2020-10-27 14:04:15,919 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:04:15,919 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-27 14:04:15,919 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 68 [2020-10-27 14:04:15,919 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-27 14:04:15,920 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:04:15,973 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 14:04:15,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:04:15,978 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:04:15,980 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:04:15,980 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 14:04:15,981 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:04:15,981 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-27 14:04:15,981 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:04:15,981 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:04:15,981 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:04:15,982 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:04:15,982 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:04:15,984 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-27 14:04:15,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:04:15,987 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:04:15,990 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:04:16,027 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:04:16,027 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 26 [2020-10-27 14:04:16,027 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 14:04:16,027 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 39 [2020-10-27 14:04:16,028 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:04:16,028 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-27 14:04:16,028 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 14:04:16,028 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-27 14:04:16,028 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:04:16,143 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-10-27 14:04:16,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:04:16,145 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:04:16,147 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:04:16,191 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:04:16,192 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 26 [2020-10-27 14:04:16,192 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 14:04:16,192 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 46 [2020-10-27 14:04:16,192 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:04:16,192 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-27 14:04:16,192 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 14:04:16,193 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-27 14:04:16,193 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:04:16,199 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2020-10-27 14:04:16,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:04:16,205 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:04:16,238 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:04:16,239 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 26 [2020-10-27 14:04:16,239 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:04:16,239 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 35 [2020-10-27 14:04:16,239 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:04:16,239 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-27 14:04:16,240 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 14:04:16,240 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-27 14:04:16,240 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:04:16,255 INFO L134 CoverageAnalysis]: Checked inductivity of 639 backedges. 192 proven. 384 refuted. 0 times theorem prover too weak. 63 trivial. 0 not checked. [2020-10-27 14:04:16,255 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [721237183] [2020-10-27 14:04:16,255 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 14:04:16,255 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-10-27 14:04:16,256 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [725745304] [2020-10-27 14:04:16,256 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-27 14:04:16,257 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 14:04:16,257 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-27 14:04:16,257 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=75, Unknown=0, NotChecked=0, Total=132 [2020-10-27 14:04:16,258 INFO L87 Difference]: Start difference. First operand 43 states and 47 transitions. Second operand 12 states. [2020-10-27 14:04:16,775 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 14:04:16,775 INFO L93 Difference]: Finished difference Result 80 states and 90 transitions. [2020-10-27 14:04:16,775 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-27 14:04:16,776 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 82 [2020-10-27 14:04:16,776 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 14:04:16,777 INFO L225 Difference]: With dead ends: 80 [2020-10-27 14:04:16,777 INFO L226 Difference]: Without dead ends: 46 [2020-10-27 14:04:16,779 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=165, Invalid=255, Unknown=0, NotChecked=0, Total=420 [2020-10-27 14:04:16,779 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46 states. [2020-10-27 14:04:16,785 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46 to 45. [2020-10-27 14:04:16,785 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 45 states. [2020-10-27 14:04:16,786 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 49 transitions. [2020-10-27 14:04:16,786 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 49 transitions. Word has length 82 [2020-10-27 14:04:16,787 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 14:04:16,787 INFO L481 AbstractCegarLoop]: Abstraction has 45 states and 49 transitions. [2020-10-27 14:04:16,787 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-27 14:04:16,787 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 49 transitions. [2020-10-27 14:04:16,788 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2020-10-27 14:04:16,788 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 14:04:16,789 INFO L422 BasicCegarLoop]: trace histogram [27, 27, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 14:04:16,789 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-27 14:04:16,789 INFO L429 AbstractCegarLoop]: === Iteration 11 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 14:04:16,789 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 14:04:16,790 INFO L82 PathProgramCache]: Analyzing trace with hash -838413057, now seen corresponding path program 9 times [2020-10-27 14:04:16,790 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 14:04:16,790 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1462637356] [2020-10-27 14:04:16,790 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 14:04:16,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:04:16,801 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:04:16,813 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:04:16,828 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:04:16,848 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:04:18,962 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:04:21,802 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:04:21,803 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 102 [2020-10-27 14:04:21,803 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-27 14:04:21,803 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5003 [2020-10-27 14:04:21,803 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:04:21,803 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-27 14:04:21,803 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 72 [2020-10-27 14:04:21,803 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-10-27 14:04:21,804 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:04:21,831 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 14:04:21,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:04:21,835 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:04:21,837 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:04:21,837 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 14:04:21,838 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:04:21,838 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 14:04:21,838 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:04:21,838 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:04:21,838 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:04:21,838 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:04:21,838 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:04:21,841 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-27 14:04:21,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:04:21,843 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:04:21,844 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:04:21,877 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:04:21,877 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 28 [2020-10-27 14:04:21,877 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 14:04:21,877 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 34 [2020-10-27 14:04:21,877 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:04:21,877 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-27 14:04:21,877 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 14:04:21,877 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-10-27 14:04:21,878 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:04:21,994 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-10-27 14:04:21,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:04:21,997 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:04:21,999 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:04:22,032 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:04:22,033 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 28 [2020-10-27 14:04:22,033 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 14:04:22,033 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 35 [2020-10-27 14:04:22,033 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:04:22,033 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-27 14:04:22,033 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 14:04:22,033 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-10-27 14:04:22,033 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:04:22,039 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2020-10-27 14:04:22,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:04:22,046 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:04:22,078 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:04:22,078 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 28 [2020-10-27 14:04:22,078 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:04:22,078 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 33 [2020-10-27 14:04:22,078 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:04:22,078 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-27 14:04:22,079 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 14:04:22,079 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-10-27 14:04:22,079 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:04:22,092 INFO L134 CoverageAnalysis]: Checked inductivity of 798 backedges. 243 proven. 486 refuted. 0 times theorem prover too weak. 69 trivial. 0 not checked. [2020-10-27 14:04:22,093 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1462637356] [2020-10-27 14:04:22,093 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 14:04:22,093 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-10-27 14:04:22,093 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [851734416] [2020-10-27 14:04:22,094 INFO L461 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-27 14:04:22,094 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 14:04:22,094 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-27 14:04:22,095 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=88, Unknown=0, NotChecked=0, Total=156 [2020-10-27 14:04:22,095 INFO L87 Difference]: Start difference. First operand 45 states and 49 transitions. Second operand 13 states. [2020-10-27 14:04:22,637 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 14:04:22,637 INFO L93 Difference]: Finished difference Result 84 states and 94 transitions. [2020-10-27 14:04:22,638 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-27 14:04:22,638 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 88 [2020-10-27 14:04:22,638 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 14:04:22,639 INFO L225 Difference]: With dead ends: 84 [2020-10-27 14:04:22,639 INFO L226 Difference]: Without dead ends: 48 [2020-10-27 14:04:22,640 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=198, Invalid=308, Unknown=0, NotChecked=0, Total=506 [2020-10-27 14:04:22,640 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48 states. [2020-10-27 14:04:22,655 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48 to 47. [2020-10-27 14:04:22,656 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 47 states. [2020-10-27 14:04:22,656 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 51 transitions. [2020-10-27 14:04:22,657 INFO L78 Accepts]: Start accepts. Automaton has 47 states and 51 transitions. Word has length 88 [2020-10-27 14:04:22,657 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 14:04:22,657 INFO L481 AbstractCegarLoop]: Abstraction has 47 states and 51 transitions. [2020-10-27 14:04:22,657 INFO L482 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-27 14:04:22,657 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states and 51 transitions. [2020-10-27 14:04:22,659 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2020-10-27 14:04:22,659 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 14:04:22,659 INFO L422 BasicCegarLoop]: trace histogram [30, 30, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 14:04:22,662 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-27 14:04:22,662 INFO L429 AbstractCegarLoop]: === Iteration 12 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 14:04:22,663 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 14:04:22,663 INFO L82 PathProgramCache]: Analyzing trace with hash -1418585347, now seen corresponding path program 10 times [2020-10-27 14:04:22,663 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 14:04:22,664 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1083268455] [2020-10-27 14:04:22,664 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 14:04:22,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:04:22,678 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:04:22,688 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:04:22,703 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:04:22,724 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:04:25,360 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:04:27,678 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:04:27,678 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 108 [2020-10-27 14:04:27,678 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-27 14:04:27,678 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-10-27 14:04:27,678 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:04:27,678 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-27 14:04:27,678 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 76 [2020-10-27 14:04:27,679 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-10-27 14:04:27,679 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:04:27,706 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 14:04:27,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:04:27,709 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:04:27,712 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:04:27,713 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 14:04:27,713 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:04:27,713 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 14:04:27,713 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:04:27,713 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:04:27,713 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:04:27,714 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:04:27,714 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:04:27,716 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-27 14:04:27,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:04:27,719 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:04:27,721 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:04:27,769 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:04:27,769 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-10-27 14:04:27,770 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 14:04:27,770 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 50 [2020-10-27 14:04:27,770 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:04:27,770 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-27 14:04:27,770 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 14:04:27,770 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-10-27 14:04:27,770 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:04:27,909 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-10-27 14:04:27,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:04:27,912 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:04:27,919 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:04:27,942 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:04:27,942 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-10-27 14:04:27,942 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 14:04:27,942 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 29 [2020-10-27 14:04:27,942 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:04:27,942 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-27 14:04:27,942 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 14:04:27,942 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-10-27 14:04:27,943 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:04:27,948 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2020-10-27 14:04:27,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:04:27,955 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:04:27,991 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:04:27,991 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-10-27 14:04:27,992 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:04:27,992 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 38 [2020-10-27 14:04:27,992 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:04:27,992 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-27 14:04:27,992 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 14:04:27,992 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-10-27 14:04:27,992 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:04:28,008 INFO L134 CoverageAnalysis]: Checked inductivity of 975 backedges. 300 proven. 600 refuted. 0 times theorem prover too weak. 75 trivial. 0 not checked. [2020-10-27 14:04:28,008 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1083268455] [2020-10-27 14:04:28,008 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 14:04:28,009 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2020-10-27 14:04:28,009 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [211171789] [2020-10-27 14:04:28,009 INFO L461 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-10-27 14:04:28,009 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 14:04:28,010 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-10-27 14:04:28,011 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=80, Invalid=102, Unknown=0, NotChecked=0, Total=182 [2020-10-27 14:04:28,011 INFO L87 Difference]: Start difference. First operand 47 states and 51 transitions. Second operand 14 states. [2020-10-27 14:04:28,568 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 14:04:28,568 INFO L93 Difference]: Finished difference Result 88 states and 98 transitions. [2020-10-27 14:04:28,569 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-10-27 14:04:28,569 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 94 [2020-10-27 14:04:28,569 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 14:04:28,570 INFO L225 Difference]: With dead ends: 88 [2020-10-27 14:04:28,570 INFO L226 Difference]: Without dead ends: 50 [2020-10-27 14:04:28,572 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 55 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=234, Invalid=366, Unknown=0, NotChecked=0, Total=600 [2020-10-27 14:04:28,572 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states. [2020-10-27 14:04:28,578 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 49. [2020-10-27 14:04:28,578 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 49 states. [2020-10-27 14:04:28,578 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 53 transitions. [2020-10-27 14:04:28,579 INFO L78 Accepts]: Start accepts. Automaton has 49 states and 53 transitions. Word has length 94 [2020-10-27 14:04:28,579 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 14:04:28,579 INFO L481 AbstractCegarLoop]: Abstraction has 49 states and 53 transitions. [2020-10-27 14:04:28,579 INFO L482 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-10-27 14:04:28,579 INFO L276 IsEmpty]: Start isEmpty. Operand 49 states and 53 transitions. [2020-10-27 14:04:28,580 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2020-10-27 14:04:28,580 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 14:04:28,580 INFO L422 BasicCegarLoop]: trace histogram [33, 33, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 14:04:28,580 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-27 14:04:28,581 INFO L429 AbstractCegarLoop]: === Iteration 13 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 14:04:28,581 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 14:04:28,581 INFO L82 PathProgramCache]: Analyzing trace with hash 1760963195, now seen corresponding path program 11 times [2020-10-27 14:04:28,581 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 14:04:28,582 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1783285140] [2020-10-27 14:04:28,582 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 14:04:28,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:04:28,593 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:04:28,603 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:04:28,617 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:04:28,637 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:04:33,592 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:04:33,592 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 114 [2020-10-27 14:04:33,592 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-27 14:04:33,593 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-10-27 14:04:33,593 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:04:33,593 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 14:04:33,593 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 74 [2020-10-27 14:04:33,593 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-27 14:04:33,593 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:04:33,629 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 14:04:33,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:04:33,631 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:04:33,635 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:04:33,635 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 14:04:33,635 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:04:33,635 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 14:04:33,635 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:04:33,636 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:04:33,636 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:04:33,636 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:04:33,636 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:04:33,639 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-27 14:04:33,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:04:33,641 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:04:33,644 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:04:33,712 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:04:33,712 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-10-27 14:04:33,712 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 14:04:33,712 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 70 [2020-10-27 14:04:33,713 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:04:33,713 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-10-27 14:04:33,713 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 14:04:33,713 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-10-27 14:04:33,713 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:04:33,885 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-10-27 14:04:33,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:04:33,888 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:04:33,890 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:04:33,933 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:04:33,933 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-10-27 14:04:33,934 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 14:04:33,934 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 45 [2020-10-27 14:04:33,934 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:04:33,934 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-10-27 14:04:33,934 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 14:04:33,934 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-10-27 14:04:33,934 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:04:33,941 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2020-10-27 14:04:33,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:04:33,948 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:04:33,952 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:04:34,018 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:04:34,018 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-10-27 14:04:34,018 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 14:04:34,018 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 71 [2020-10-27 14:04:34,019 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:04:34,019 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:04:34,019 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 29 [2020-10-27 14:04:34,019 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:04:34,019 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:04:34,034 INFO L134 CoverageAnalysis]: Checked inductivity of 1170 backedges. 121 proven. 899 refuted. 0 times theorem prover too weak. 150 trivial. 0 not checked. [2020-10-27 14:04:34,035 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1783285140] [2020-10-27 14:04:34,035 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 14:04:34,035 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2020-10-27 14:04:34,035 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [386151400] [2020-10-27 14:04:34,036 INFO L461 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-10-27 14:04:34,036 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 14:04:34,037 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-10-27 14:04:34,037 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=95, Invalid=145, Unknown=0, NotChecked=0, Total=240 [2020-10-27 14:04:34,037 INFO L87 Difference]: Start difference. First operand 49 states and 53 transitions. Second operand 16 states. [2020-10-27 14:04:34,871 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 14:04:34,871 INFO L93 Difference]: Finished difference Result 94 states and 105 transitions. [2020-10-27 14:04:34,872 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-10-27 14:04:34,872 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 100 [2020-10-27 14:04:34,872 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 14:04:34,876 INFO L225 Difference]: With dead ends: 94 [2020-10-27 14:04:34,876 INFO L226 Difference]: Without dead ends: 54 [2020-10-27 14:04:34,877 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 66 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=275, Invalid=481, Unknown=0, NotChecked=0, Total=756 [2020-10-27 14:04:34,878 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54 states. [2020-10-27 14:04:34,890 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54 to 52. [2020-10-27 14:04:34,890 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 52 states. [2020-10-27 14:04:34,891 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 56 transitions. [2020-10-27 14:04:34,891 INFO L78 Accepts]: Start accepts. Automaton has 52 states and 56 transitions. Word has length 100 [2020-10-27 14:04:34,892 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 14:04:34,892 INFO L481 AbstractCegarLoop]: Abstraction has 52 states and 56 transitions. [2020-10-27 14:04:34,892 INFO L482 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-10-27 14:04:34,892 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 56 transitions. [2020-10-27 14:04:34,896 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2020-10-27 14:04:34,896 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 14:04:34,896 INFO L422 BasicCegarLoop]: trace histogram [36, 36, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 14:04:34,897 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-27 14:04:34,897 INFO L429 AbstractCegarLoop]: === Iteration 14 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 14:04:34,899 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 14:04:34,899 INFO L82 PathProgramCache]: Analyzing trace with hash 2107420407, now seen corresponding path program 1 times [2020-10-27 14:04:34,899 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 14:04:34,899 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [354447899] [2020-10-27 14:04:34,900 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 14:04:34,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:04:34,916 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:04:34,934 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:04:34,959 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:04:34,986 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:04:39,920 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:04:39,920 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 122 [2020-10-27 14:04:39,920 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-27 14:04:39,920 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5005 [2020-10-27 14:04:39,920 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:04:39,920 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-27 14:04:39,921 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 78 [2020-10-27 14:04:39,921 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-10-27 14:04:39,921 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:04:39,966 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 14:04:39,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:04:39,969 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:04:39,972 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:04:39,972 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 14:04:39,972 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:04:39,973 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 14:04:39,973 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:04:39,973 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:04:39,973 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:04:39,973 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:04:39,973 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:04:39,975 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-27 14:04:39,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:04:39,977 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:04:39,980 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:04:40,051 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:04:40,052 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-10-27 14:04:40,052 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 14:04:40,052 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 74 [2020-10-27 14:04:40,052 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:04:40,052 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-10-27 14:04:40,052 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 14:04:40,053 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-10-27 14:04:40,053 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:04:40,244 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-10-27 14:04:40,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:04:40,247 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:04:40,250 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:04:40,320 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:04:40,320 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-10-27 14:04:40,321 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 14:04:40,321 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 73 [2020-10-27 14:04:40,321 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:04:40,321 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-10-27 14:04:40,321 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 14:04:40,321 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-10-27 14:04:40,322 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:04:40,331 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2020-10-27 14:04:40,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:04:40,338 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:04:40,342 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:04:40,415 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:04:40,416 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-10-27 14:04:40,416 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 14:04:40,416 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 79 [2020-10-27 14:04:40,416 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:04:40,417 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:04:40,417 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 31 [2020-10-27 14:04:40,417 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:04:40,417 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:04:40,436 INFO L134 CoverageAnalysis]: Checked inductivity of 1384 backedges. 144 proven. 1065 refuted. 0 times theorem prover too weak. 175 trivial. 0 not checked. [2020-10-27 14:04:40,436 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [354447899] [2020-10-27 14:04:40,436 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 14:04:40,437 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18] total 18 [2020-10-27 14:04:40,437 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2087737440] [2020-10-27 14:04:40,438 INFO L461 AbstractCegarLoop]: Interpolant automaton has 18 states [2020-10-27 14:04:40,438 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 14:04:40,438 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2020-10-27 14:04:40,439 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=112, Invalid=194, Unknown=0, NotChecked=0, Total=306 [2020-10-27 14:04:40,439 INFO L87 Difference]: Start difference. First operand 52 states and 56 transitions. Second operand 18 states. [2020-10-27 14:04:41,144 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 14:04:41,144 INFO L93 Difference]: Finished difference Result 101 states and 112 transitions. [2020-10-27 14:04:41,144 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-10-27 14:04:41,144 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 108 [2020-10-27 14:04:41,145 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 14:04:41,145 INFO L225 Difference]: With dead ends: 101 [2020-10-27 14:04:41,145 INFO L226 Difference]: Without dead ends: 58 [2020-10-27 14:04:41,147 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 92 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=320, Invalid=610, Unknown=0, NotChecked=0, Total=930 [2020-10-27 14:04:41,147 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58 states. [2020-10-27 14:04:41,161 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58 to 56. [2020-10-27 14:04:41,162 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 56 states. [2020-10-27 14:04:41,162 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 60 transitions. [2020-10-27 14:04:41,162 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 60 transitions. Word has length 108 [2020-10-27 14:04:41,163 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 14:04:41,163 INFO L481 AbstractCegarLoop]: Abstraction has 56 states and 60 transitions. [2020-10-27 14:04:41,163 INFO L482 AbstractCegarLoop]: Interpolant automaton has 18 states. [2020-10-27 14:04:41,163 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 60 transitions. [2020-10-27 14:04:41,164 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2020-10-27 14:04:41,164 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 14:04:41,164 INFO L422 BasicCegarLoop]: trace histogram [39, 39, 3, 3, 3, 3, 2, 2, 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 14:04:41,165 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-10-27 14:04:41,165 INFO L429 AbstractCegarLoop]: === Iteration 15 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 14:04:41,167 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 14:04:41,167 INFO L82 PathProgramCache]: Analyzing trace with hash -2124265869, now seen corresponding path program 2 times [2020-10-27 14:04:41,167 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 14:04:41,167 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1000669865] [2020-10-27 14:04:41,167 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 14:04:41,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:04:41,181 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:04:41,193 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:04:41,213 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:04:41,229 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:04:46,185 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:04:46,185 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 130 [2020-10-27 14:04:46,185 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-27 14:04:46,185 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5005 [2020-10-27 14:04:46,185 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:04:46,186 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 14:04:46,186 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 82 [2020-10-27 14:04:46,186 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 14:04:46,186 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:04:46,234 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 14:04:46,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:04:46,237 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:04:46,239 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:04:46,239 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 14:04:46,239 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:04:46,239 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 14:04:46,239 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:04:46,239 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:04:46,240 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:04:46,240 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:04:46,240 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:04:46,241 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-27 14:04:46,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:04:46,243 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:04:46,245 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:04:46,302 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:04:46,302 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 36 [2020-10-27 14:04:46,302 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 14:04:46,302 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 59 [2020-10-27 14:04:46,302 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:04:46,302 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-10-27 14:04:46,302 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 14:04:46,302 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-10-27 14:04:46,303 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:04:46,539 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-10-27 14:04:46,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:04:46,541 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:04:46,545 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:04:46,611 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:04:46,612 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 36 [2020-10-27 14:04:46,612 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 14:04:46,612 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 70 [2020-10-27 14:04:46,612 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:04:46,612 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-10-27 14:04:46,612 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 14:04:46,612 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-10-27 14:04:46,613 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:04:46,618 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2020-10-27 14:04:46,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:04:46,625 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:04:46,629 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:04:46,691 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:04:46,691 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 36 [2020-10-27 14:04:46,691 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 14:04:46,691 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 67 [2020-10-27 14:04:46,691 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:04:46,691 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:04:46,691 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 33 [2020-10-27 14:04:46,692 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:04:46,692 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:04:46,707 INFO L134 CoverageAnalysis]: Checked inductivity of 1618 backedges. 169 proven. 1247 refuted. 0 times theorem prover too weak. 202 trivial. 0 not checked. [2020-10-27 14:04:46,708 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1000669865] [2020-10-27 14:04:46,708 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 14:04:46,708 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20] total 20 [2020-10-27 14:04:46,708 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2126880219] [2020-10-27 14:04:46,709 INFO L461 AbstractCegarLoop]: Interpolant automaton has 20 states [2020-10-27 14:04:46,709 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 14:04:46,709 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2020-10-27 14:04:46,709 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=131, Invalid=249, Unknown=0, NotChecked=0, Total=380 [2020-10-27 14:04:46,710 INFO L87 Difference]: Start difference. First operand 56 states and 60 transitions. Second operand 20 states. [2020-10-27 14:04:47,454 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 14:04:47,454 INFO L93 Difference]: Finished difference Result 109 states and 120 transitions. [2020-10-27 14:04:47,455 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2020-10-27 14:04:47,455 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 116 [2020-10-27 14:04:47,455 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 14:04:47,458 INFO L225 Difference]: With dead ends: 109 [2020-10-27 14:04:47,458 INFO L226 Difference]: Without dead ends: 62 [2020-10-27 14:04:47,460 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 121 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=369, Invalid=753, Unknown=0, NotChecked=0, Total=1122 [2020-10-27 14:04:47,461 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62 states. [2020-10-27 14:04:47,466 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62 to 60. [2020-10-27 14:04:47,467 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 60 states. [2020-10-27 14:04:47,467 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60 states to 60 states and 64 transitions. [2020-10-27 14:04:47,468 INFO L78 Accepts]: Start accepts. Automaton has 60 states and 64 transitions. Word has length 116 [2020-10-27 14:04:47,468 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 14:04:47,468 INFO L481 AbstractCegarLoop]: Abstraction has 60 states and 64 transitions. [2020-10-27 14:04:47,468 INFO L482 AbstractCegarLoop]: Interpolant automaton has 20 states. [2020-10-27 14:04:47,468 INFO L276 IsEmpty]: Start isEmpty. Operand 60 states and 64 transitions. [2020-10-27 14:04:47,469 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2020-10-27 14:04:47,469 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 14:04:47,470 INFO L422 BasicCegarLoop]: trace histogram [42, 42, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 14:04:47,470 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-10-27 14:04:47,470 INFO L429 AbstractCegarLoop]: === Iteration 16 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 14:04:47,470 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 14:04:47,470 INFO L82 PathProgramCache]: Analyzing trace with hash -416042769, now seen corresponding path program 3 times [2020-10-27 14:04:47,471 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 14:04:47,471 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1066571315] [2020-10-27 14:04:47,471 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 14:04:47,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:04:47,482 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:04:47,494 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:04:47,522 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:04:47,543 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:04:52,480 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:04:52,480 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 138 [2020-10-27 14:04:52,480 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-27 14:04:52,480 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-10-27 14:04:52,480 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:04:52,481 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-27 14:04:52,481 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 86 [2020-10-27 14:04:52,481 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-27 14:04:52,481 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:04:52,535 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 14:04:52,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:04:52,538 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:04:52,540 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:04:52,540 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 14:04:52,540 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:04:52,540 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 14:04:52,540 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:04:52,540 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:04:52,540 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:04:52,541 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:04:52,541 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:04:52,542 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-27 14:04:52,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:04:52,543 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:04:52,545 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:04:52,599 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:04:52,599 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 38 [2020-10-27 14:04:52,599 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 14:04:52,600 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 56 [2020-10-27 14:04:52,600 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:04:52,600 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 16 [2020-10-27 14:04:52,600 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 14:04:52,600 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-10-27 14:04:52,600 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:04:52,869 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2020-10-27 14:04:52,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:04:52,871 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:04:52,874 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:04:52,933 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:04:52,933 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 38 [2020-10-27 14:04:52,934 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 14:04:52,934 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 61 [2020-10-27 14:04:52,934 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:04:52,934 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 16 [2020-10-27 14:04:52,934 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 14:04:52,934 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-10-27 14:04:52,934 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:04:52,940 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2020-10-27 14:04:52,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:04:52,946 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:04:52,949 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:04:53,002 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:04:53,002 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 38 [2020-10-27 14:04:53,003 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 14:04:53,003 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 57 [2020-10-27 14:04:53,003 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:04:53,003 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:04:53,003 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 35 [2020-10-27 14:04:53,003 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:04:53,003 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:04:53,023 INFO L134 CoverageAnalysis]: Checked inductivity of 1872 backedges. 196 proven. 1445 refuted. 0 times theorem prover too weak. 231 trivial. 0 not checked. [2020-10-27 14:04:53,023 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1066571315] [2020-10-27 14:04:53,024 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 14:04:53,024 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22] total 22 [2020-10-27 14:04:53,024 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [381343599] [2020-10-27 14:04:53,024 INFO L461 AbstractCegarLoop]: Interpolant automaton has 22 states [2020-10-27 14:04:53,025 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 14:04:53,025 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2020-10-27 14:04:53,026 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=152, Invalid=310, Unknown=0, NotChecked=0, Total=462 [2020-10-27 14:04:53,026 INFO L87 Difference]: Start difference. First operand 60 states and 64 transitions. Second operand 22 states. [2020-10-27 14:04:53,947 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 14:04:53,948 INFO L93 Difference]: Finished difference Result 117 states and 128 transitions. [2020-10-27 14:04:53,949 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2020-10-27 14:04:53,949 INFO L78 Accepts]: Start accepts. Automaton has 22 states. Word has length 124 [2020-10-27 14:04:53,950 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 14:04:53,950 INFO L225 Difference]: With dead ends: 117 [2020-10-27 14:04:53,951 INFO L226 Difference]: Without dead ends: 66 [2020-10-27 14:04:53,955 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 153 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=422, Invalid=910, Unknown=0, NotChecked=0, Total=1332 [2020-10-27 14:04:53,956 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66 states. [2020-10-27 14:04:53,967 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66 to 64. [2020-10-27 14:04:53,967 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 64 states. [2020-10-27 14:04:53,969 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64 states to 64 states and 68 transitions. [2020-10-27 14:04:53,970 INFO L78 Accepts]: Start accepts. Automaton has 64 states and 68 transitions. Word has length 124 [2020-10-27 14:04:53,970 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 14:04:53,970 INFO L481 AbstractCegarLoop]: Abstraction has 64 states and 68 transitions. [2020-10-27 14:04:53,970 INFO L482 AbstractCegarLoop]: Interpolant automaton has 22 states. [2020-10-27 14:04:53,971 INFO L276 IsEmpty]: Start isEmpty. Operand 64 states and 68 transitions. [2020-10-27 14:04:53,972 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2020-10-27 14:04:53,972 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 14:04:53,972 INFO L422 BasicCegarLoop]: trace histogram [45, 45, 4, 4, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 14:04:53,973 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-10-27 14:04:53,973 INFO L429 AbstractCegarLoop]: === Iteration 17 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 14:04:53,973 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 14:04:53,973 INFO L82 PathProgramCache]: Analyzing trace with hash -2064798101, now seen corresponding path program 4 times [2020-10-27 14:04:53,974 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 14:04:53,974 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [744844889] [2020-10-27 14:04:53,974 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 14:04:53,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:04:53,987 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:04:53,997 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:04:54,019 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:04:54,041 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:04:58,993 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:04:58,994 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 146 [2020-10-27 14:04:58,994 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-27 14:04:58,994 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5007 [2020-10-27 14:04:58,994 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:04:58,994 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-27 14:04:58,994 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 90 [2020-10-27 14:04:58,994 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-27 14:04:58,994 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:04:59,058 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 14:04:59,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:04:59,061 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:04:59,064 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:04:59,064 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 14:04:59,064 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:04:59,064 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 14:04:59,064 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:04:59,064 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:04:59,065 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:04:59,065 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:04:59,065 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:04:59,067 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-27 14:04:59,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:04:59,069 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:04:59,071 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:04:59,135 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:04:59,135 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 40 [2020-10-27 14:04:59,135 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 14:04:59,135 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 66 [2020-10-27 14:04:59,135 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:04:59,135 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 17 [2020-10-27 14:04:59,135 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 14:04:59,136 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 32 [2020-10-27 14:04:59,136 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:04:59,448 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-10-27 14:04:59,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:04:59,450 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:04:59,453 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:04:59,526 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:04:59,526 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 40 [2020-10-27 14:04:59,526 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 14:04:59,526 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 75 [2020-10-27 14:04:59,526 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:04:59,526 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 17 [2020-10-27 14:04:59,527 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 14:04:59,527 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 32 [2020-10-27 14:04:59,527 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:04:59,533 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2020-10-27 14:04:59,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:04:59,538 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:04:59,541 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:04:59,601 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:04:59,602 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 40 [2020-10-27 14:04:59,602 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 14:04:59,602 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 64 [2020-10-27 14:04:59,602 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:04:59,602 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:04:59,602 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 37 [2020-10-27 14:04:59,602 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:04:59,603 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:04:59,623 INFO L134 CoverageAnalysis]: Checked inductivity of 2146 backedges. 225 proven. 1659 refuted. 0 times theorem prover too weak. 262 trivial. 0 not checked. [2020-10-27 14:04:59,624 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [744844889] [2020-10-27 14:04:59,624 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 14:04:59,624 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24] total 24 [2020-10-27 14:04:59,624 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [831732127] [2020-10-27 14:04:59,625 INFO L461 AbstractCegarLoop]: Interpolant automaton has 24 states [2020-10-27 14:04:59,625 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 14:04:59,625 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2020-10-27 14:04:59,626 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=175, Invalid=377, Unknown=0, NotChecked=0, Total=552 [2020-10-27 14:04:59,626 INFO L87 Difference]: Start difference. First operand 64 states and 68 transitions. Second operand 24 states. [2020-10-27 14:05:00,549 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 14:05:00,549 INFO L93 Difference]: Finished difference Result 125 states and 136 transitions. [2020-10-27 14:05:00,550 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2020-10-27 14:05:00,550 INFO L78 Accepts]: Start accepts. Automaton has 24 states. Word has length 132 [2020-10-27 14:05:00,550 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 14:05:00,551 INFO L225 Difference]: With dead ends: 125 [2020-10-27 14:05:00,551 INFO L226 Difference]: Without dead ends: 70 [2020-10-27 14:05:00,552 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 188 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=479, Invalid=1081, Unknown=0, NotChecked=0, Total=1560 [2020-10-27 14:05:00,553 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 70 states. [2020-10-27 14:05:00,558 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 70 to 68. [2020-10-27 14:05:00,558 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 68 states. [2020-10-27 14:05:00,559 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 68 states to 68 states and 72 transitions. [2020-10-27 14:05:00,559 INFO L78 Accepts]: Start accepts. Automaton has 68 states and 72 transitions. Word has length 132 [2020-10-27 14:05:00,560 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 14:05:00,560 INFO L481 AbstractCegarLoop]: Abstraction has 68 states and 72 transitions. [2020-10-27 14:05:00,560 INFO L482 AbstractCegarLoop]: Interpolant automaton has 24 states. [2020-10-27 14:05:00,560 INFO L276 IsEmpty]: Start isEmpty. Operand 68 states and 72 transitions. [2020-10-27 14:05:00,561 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 141 [2020-10-27 14:05:00,562 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 14:05:00,562 INFO L422 BasicCegarLoop]: trace histogram [48, 48, 5, 5, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 14:05:00,562 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-10-27 14:05:00,562 INFO L429 AbstractCegarLoop]: === Iteration 18 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 14:05:00,562 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 14:05:00,563 INFO L82 PathProgramCache]: Analyzing trace with hash 1599930087, now seen corresponding path program 5 times [2020-10-27 14:05:00,563 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 14:05:00,563 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [468927840] [2020-10-27 14:05:00,563 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 14:05:00,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:05:00,574 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:05:00,587 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:05:00,613 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:05:00,635 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:05:05,574 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:05:05,574 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 154 [2020-10-27 14:05:05,574 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-27 14:05:05,574 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-10-27 14:05:05,574 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:05:05,575 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-27 14:05:05,575 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 94 [2020-10-27 14:05:05,575 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-27 14:05:05,575 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:05:05,647 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 14:05:05,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:05:05,651 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:05:05,653 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:05:05,653 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 14:05:05,653 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:05:05,653 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 14:05:05,654 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:05:05,654 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:05:05,654 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:05:05,654 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:05:05,654 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:05:05,656 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-27 14:05:05,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:05:05,658 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:05:05,661 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:05:05,729 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:05:05,730 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 42 [2020-10-27 14:05:05,730 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 14:05:05,730 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 71 [2020-10-27 14:05:05,730 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:05:05,730 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 18 [2020-10-27 14:05:05,730 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 14:05:05,730 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 34 [2020-10-27 14:05:05,730 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:05:06,099 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2020-10-27 14:05:06,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:05:06,102 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:05:06,105 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:05:06,170 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:05:06,170 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 42 [2020-10-27 14:05:06,171 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 14:05:06,171 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 68 [2020-10-27 14:05:06,171 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:05:06,171 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 18 [2020-10-27 14:05:06,171 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 14:05:06,171 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 34 [2020-10-27 14:05:06,171 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:05:06,179 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2020-10-27 14:05:06,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:05:06,188 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:05:06,192 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:05:06,266 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:05:06,266 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 42 [2020-10-27 14:05:06,267 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 14:05:06,267 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 80 [2020-10-27 14:05:06,267 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:05:06,267 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:05:06,267 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 39 [2020-10-27 14:05:06,267 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:05:06,267 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:05:06,294 INFO L134 CoverageAnalysis]: Checked inductivity of 2440 backedges. 256 proven. 1889 refuted. 0 times theorem prover too weak. 295 trivial. 0 not checked. [2020-10-27 14:05:06,295 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [468927840] [2020-10-27 14:05:06,295 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 14:05:06,295 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [26] total 26 [2020-10-27 14:05:06,295 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1725271366] [2020-10-27 14:05:06,295 INFO L461 AbstractCegarLoop]: Interpolant automaton has 26 states [2020-10-27 14:05:06,295 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 14:05:06,296 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2020-10-27 14:05:06,296 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=200, Invalid=450, Unknown=0, NotChecked=0, Total=650 [2020-10-27 14:05:06,297 INFO L87 Difference]: Start difference. First operand 68 states and 72 transitions. Second operand 26 states. [2020-10-27 14:05:07,401 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 14:05:07,401 INFO L93 Difference]: Finished difference Result 133 states and 144 transitions. [2020-10-27 14:05:07,401 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2020-10-27 14:05:07,402 INFO L78 Accepts]: Start accepts. Automaton has 26 states. Word has length 140 [2020-10-27 14:05:07,402 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 14:05:07,403 INFO L225 Difference]: With dead ends: 133 [2020-10-27 14:05:07,403 INFO L226 Difference]: Without dead ends: 74 [2020-10-27 14:05:07,404 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 67 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 226 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=540, Invalid=1266, Unknown=0, NotChecked=0, Total=1806 [2020-10-27 14:05:07,405 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 74 states. [2020-10-27 14:05:07,415 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 74 to 72. [2020-10-27 14:05:07,416 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 72 states. [2020-10-27 14:05:07,419 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 72 states to 72 states and 76 transitions. [2020-10-27 14:05:07,419 INFO L78 Accepts]: Start accepts. Automaton has 72 states and 76 transitions. Word has length 140 [2020-10-27 14:05:07,419 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 14:05:07,419 INFO L481 AbstractCegarLoop]: Abstraction has 72 states and 76 transitions. [2020-10-27 14:05:07,420 INFO L482 AbstractCegarLoop]: Interpolant automaton has 26 states. [2020-10-27 14:05:07,420 INFO L276 IsEmpty]: Start isEmpty. Operand 72 states and 76 transitions. [2020-10-27 14:05:07,421 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2020-10-27 14:05:07,422 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 14:05:07,422 INFO L422 BasicCegarLoop]: trace histogram [51, 51, 6, 6, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 14:05:07,422 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2020-10-27 14:05:07,422 INFO L429 AbstractCegarLoop]: === Iteration 19 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 14:05:07,423 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 14:05:07,423 INFO L82 PathProgramCache]: Analyzing trace with hash 1983799907, now seen corresponding path program 6 times [2020-10-27 14:05:07,423 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 14:05:07,423 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2055675222] [2020-10-27 14:05:07,423 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 14:05:07,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:05:07,436 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:05:07,450 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:05:07,480 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:05:07,511 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:05:12,442 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:05:12,442 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 162 [2020-10-27 14:05:12,442 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-27 14:05:12,442 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5007 [2020-10-27 14:05:12,443 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:05:12,443 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-27 14:05:12,443 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 98 [2020-10-27 14:05:12,443 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-27 14:05:12,443 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:05:12,531 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 14:05:12,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:05:12,534 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:05:12,536 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:05:12,536 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 14:05:12,536 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:05:12,536 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 14:05:12,537 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:05:12,537 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:05:12,537 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:05:12,537 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:05:12,537 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:05:12,538 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-27 14:05:12,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:05:12,540 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:05:12,543 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:05:12,620 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:05:12,620 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 44 [2020-10-27 14:05:12,620 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 14:05:12,621 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 80 [2020-10-27 14:05:12,621 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:05:12,621 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 19 [2020-10-27 14:05:12,621 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 14:05:12,621 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 36 [2020-10-27 14:05:12,621 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:05:13,030 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2020-10-27 14:05:13,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:05:13,032 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:05:13,036 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:05:13,151 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:05:13,151 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 44 [2020-10-27 14:05:13,151 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 14:05:13,151 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 118 [2020-10-27 14:05:13,151 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:05:13,152 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 19 [2020-10-27 14:05:13,152 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 14:05:13,152 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 36 [2020-10-27 14:05:13,152 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:05:13,162 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2020-10-27 14:05:13,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:05:13,170 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:05:13,206 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:05:13,229 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:05:13,230 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 44 [2020-10-27 14:05:13,230 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 14:05:13,230 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 61 [2020-10-27 14:05:13,230 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:05:13,230 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:05:13,230 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 41 [2020-10-27 14:05:13,230 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:05:13,230 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:05:13,248 INFO L134 CoverageAnalysis]: Checked inductivity of 2754 backedges. 289 proven. 2135 refuted. 0 times theorem prover too weak. 330 trivial. 0 not checked. [2020-10-27 14:05:13,249 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2055675222] [2020-10-27 14:05:13,249 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 14:05:13,249 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [28] total 28 [2020-10-27 14:05:13,249 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [293604243] [2020-10-27 14:05:13,250 INFO L461 AbstractCegarLoop]: Interpolant automaton has 28 states [2020-10-27 14:05:13,250 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 14:05:13,250 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2020-10-27 14:05:13,251 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=227, Invalid=529, Unknown=0, NotChecked=0, Total=756 [2020-10-27 14:05:13,251 INFO L87 Difference]: Start difference. First operand 72 states and 76 transitions. Second operand 28 states. [2020-10-27 14:05:14,468 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 14:05:14,469 INFO L93 Difference]: Finished difference Result 141 states and 152 transitions. [2020-10-27 14:05:14,469 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2020-10-27 14:05:14,469 INFO L78 Accepts]: Start accepts. Automaton has 28 states. Word has length 148 [2020-10-27 14:05:14,470 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 14:05:14,471 INFO L225 Difference]: With dead ends: 141 [2020-10-27 14:05:14,471 INFO L226 Difference]: Without dead ends: 78 [2020-10-27 14:05:14,472 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 71 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 267 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=605, Invalid=1465, Unknown=0, NotChecked=0, Total=2070 [2020-10-27 14:05:14,473 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 78 states. [2020-10-27 14:05:14,478 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 78 to 76. [2020-10-27 14:05:14,478 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 76 states. [2020-10-27 14:05:14,479 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76 states to 76 states and 80 transitions. [2020-10-27 14:05:14,479 INFO L78 Accepts]: Start accepts. Automaton has 76 states and 80 transitions. Word has length 148 [2020-10-27 14:05:14,480 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 14:05:14,480 INFO L481 AbstractCegarLoop]: Abstraction has 76 states and 80 transitions. [2020-10-27 14:05:14,480 INFO L482 AbstractCegarLoop]: Interpolant automaton has 28 states. [2020-10-27 14:05:14,480 INFO L276 IsEmpty]: Start isEmpty. Operand 76 states and 80 transitions. [2020-10-27 14:05:14,481 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 157 [2020-10-27 14:05:14,482 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 14:05:14,482 INFO L422 BasicCegarLoop]: trace histogram [54, 54, 7, 7, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 14:05:14,482 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2020-10-27 14:05:14,482 INFO L429 AbstractCegarLoop]: === Iteration 20 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 14:05:14,483 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 14:05:14,483 INFO L82 PathProgramCache]: Analyzing trace with hash -1874945825, now seen corresponding path program 7 times [2020-10-27 14:05:14,483 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 14:05:14,483 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [403364907] [2020-10-27 14:05:14,483 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 14:05:14,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:05:14,497 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:05:14,512 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:05:14,540 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:05:14,557 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:05:19,501 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:05:19,502 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 170 [2020-10-27 14:05:19,502 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-27 14:05:19,502 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5006 [2020-10-27 14:05:19,502 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:05:19,502 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-27 14:05:19,502 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 102 [2020-10-27 14:05:19,502 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-27 14:05:19,502 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:05:19,610 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 14:05:19,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:05:19,613 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:05:19,615 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:05:19,615 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 14:05:19,616 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:05:19,616 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 14:05:19,616 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:05:19,616 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:05:19,616 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:05:19,616 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:05:19,616 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:05:19,617 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-27 14:05:19,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:05:19,619 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:05:19,622 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:05:19,702 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:05:19,702 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 46 [2020-10-27 14:05:19,702 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 14:05:19,702 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 83 [2020-10-27 14:05:19,703 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:05:19,703 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 20 [2020-10-27 14:05:19,703 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 14:05:19,703 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 38 [2020-10-27 14:05:19,703 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:05:20,170 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2020-10-27 14:05:20,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:05:20,174 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:05:20,177 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:05:20,324 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:05:20,324 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 46 [2020-10-27 14:05:20,325 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 14:05:20,325 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 150 [2020-10-27 14:05:20,325 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:05:20,325 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 20 [2020-10-27 14:05:20,325 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 14:05:20,325 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 38 [2020-10-27 14:05:20,325 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:05:20,335 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2020-10-27 14:05:20,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:05:20,343 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:05:20,348 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:05:20,483 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:05:20,484 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 46 [2020-10-27 14:05:20,484 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 14:05:20,484 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 143 [2020-10-27 14:05:20,484 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:05:20,484 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:05:20,485 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 43 [2020-10-27 14:05:20,485 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:05:20,485 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:05:20,519 INFO L134 CoverageAnalysis]: Checked inductivity of 3088 backedges. 324 proven. 2397 refuted. 0 times theorem prover too weak. 367 trivial. 0 not checked. [2020-10-27 14:05:20,519 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [403364907] [2020-10-27 14:05:20,520 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 14:05:20,520 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [30] total 30 [2020-10-27 14:05:20,520 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [449241346] [2020-10-27 14:05:20,520 INFO L461 AbstractCegarLoop]: Interpolant automaton has 30 states [2020-10-27 14:05:20,521 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 14:05:20,521 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2020-10-27 14:05:20,522 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=256, Invalid=614, Unknown=0, NotChecked=0, Total=870 [2020-10-27 14:05:20,522 INFO L87 Difference]: Start difference. First operand 76 states and 80 transitions. Second operand 30 states. [2020-10-27 14:05:21,802 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 14:05:21,802 INFO L93 Difference]: Finished difference Result 149 states and 160 transitions. [2020-10-27 14:05:21,803 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2020-10-27 14:05:21,803 INFO L78 Accepts]: Start accepts. Automaton has 30 states. Word has length 156 [2020-10-27 14:05:21,804 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 14:05:21,804 INFO L225 Difference]: With dead ends: 149 [2020-10-27 14:05:21,804 INFO L226 Difference]: Without dead ends: 82 [2020-10-27 14:05:21,806 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 75 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 311 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=674, Invalid=1678, Unknown=0, NotChecked=0, Total=2352 [2020-10-27 14:05:21,806 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 82 states. [2020-10-27 14:05:21,813 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 82 to 80. [2020-10-27 14:05:21,814 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 80 states. [2020-10-27 14:05:21,815 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 80 states to 80 states and 84 transitions. [2020-10-27 14:05:21,815 INFO L78 Accepts]: Start accepts. Automaton has 80 states and 84 transitions. Word has length 156 [2020-10-27 14:05:21,815 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 14:05:21,815 INFO L481 AbstractCegarLoop]: Abstraction has 80 states and 84 transitions. [2020-10-27 14:05:21,815 INFO L482 AbstractCegarLoop]: Interpolant automaton has 30 states. [2020-10-27 14:05:21,815 INFO L276 IsEmpty]: Start isEmpty. Operand 80 states and 84 transitions. [2020-10-27 14:05:21,817 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 165 [2020-10-27 14:05:21,817 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 14:05:21,817 INFO L422 BasicCegarLoop]: trace histogram [57, 57, 8, 8, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 14:05:21,817 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2020-10-27 14:05:21,818 INFO L429 AbstractCegarLoop]: === Iteration 21 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 14:05:21,818 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 14:05:21,818 INFO L82 PathProgramCache]: Analyzing trace with hash 117072475, now seen corresponding path program 8 times [2020-10-27 14:05:21,818 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 14:05:21,820 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1992968245] [2020-10-27 14:05:21,820 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 14:05:21,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:05:21,841 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:05:21,857 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:05:21,889 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:05:21,911 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:05:26,847 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:05:26,848 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 178 [2020-10-27 14:05:26,848 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-27 14:05:26,848 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5011 [2020-10-27 14:05:26,848 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:05:26,848 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-27 14:05:26,848 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 106 [2020-10-27 14:05:26,848 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-27 14:05:26,848 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:05:26,964 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 14:05:26,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:05:26,967 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:05:26,968 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:05:26,968 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 14:05:26,968 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:05:26,969 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 14:05:26,969 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:05:26,969 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:05:26,969 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:05:26,969 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:05:26,969 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:05:26,970 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-27 14:05:26,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:05:26,972 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:05:26,974 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:05:27,065 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:05:27,065 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 48 [2020-10-27 14:05:27,065 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 14:05:27,065 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 92 [2020-10-27 14:05:27,065 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:05:27,065 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 21 [2020-10-27 14:05:27,065 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 14:05:27,065 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 40 [2020-10-27 14:05:27,066 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:05:27,538 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2020-10-27 14:05:27,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:05:27,540 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:05:27,545 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:05:27,652 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:05:27,653 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 48 [2020-10-27 14:05:27,653 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 14:05:27,653 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 112 [2020-10-27 14:05:27,653 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:05:27,653 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 21 [2020-10-27 14:05:27,653 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 14:05:27,653 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 40 [2020-10-27 14:05:27,654 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:05:27,664 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2020-10-27 14:05:27,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:05:27,671 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:05:27,676 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:05:27,783 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:05:27,783 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 48 [2020-10-27 14:05:27,784 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 14:05:27,784 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 114 [2020-10-27 14:05:27,784 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:05:27,784 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:05:27,784 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 45 [2020-10-27 14:05:27,784 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:05:27,784 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:05:27,807 INFO L134 CoverageAnalysis]: Checked inductivity of 3442 backedges. 361 proven. 2675 refuted. 0 times theorem prover too weak. 406 trivial. 0 not checked. [2020-10-27 14:05:27,807 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1992968245] [2020-10-27 14:05:27,807 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 14:05:27,808 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [32] total 32 [2020-10-27 14:05:27,808 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [946387424] [2020-10-27 14:05:27,808 INFO L461 AbstractCegarLoop]: Interpolant automaton has 32 states [2020-10-27 14:05:27,808 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 14:05:27,809 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2020-10-27 14:05:27,809 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=287, Invalid=705, Unknown=0, NotChecked=0, Total=992 [2020-10-27 14:05:27,810 INFO L87 Difference]: Start difference. First operand 80 states and 84 transitions. Second operand 32 states. [2020-10-27 14:05:29,159 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 14:05:29,160 INFO L93 Difference]: Finished difference Result 157 states and 168 transitions. [2020-10-27 14:05:29,160 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2020-10-27 14:05:29,160 INFO L78 Accepts]: Start accepts. Automaton has 32 states. Word has length 164 [2020-10-27 14:05:29,161 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 14:05:29,161 INFO L225 Difference]: With dead ends: 157 [2020-10-27 14:05:29,162 INFO L226 Difference]: Without dead ends: 86 [2020-10-27 14:05:29,164 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 79 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 358 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=747, Invalid=1905, Unknown=0, NotChecked=0, Total=2652 [2020-10-27 14:05:29,165 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 86 states. [2020-10-27 14:05:29,171 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 86 to 84. [2020-10-27 14:05:29,171 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 84 states. [2020-10-27 14:05:29,174 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 84 states to 84 states and 88 transitions. [2020-10-27 14:05:29,174 INFO L78 Accepts]: Start accepts. Automaton has 84 states and 88 transitions. Word has length 164 [2020-10-27 14:05:29,175 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 14:05:29,175 INFO L481 AbstractCegarLoop]: Abstraction has 84 states and 88 transitions. [2020-10-27 14:05:29,175 INFO L482 AbstractCegarLoop]: Interpolant automaton has 32 states. [2020-10-27 14:05:29,175 INFO L276 IsEmpty]: Start isEmpty. Operand 84 states and 88 transitions. [2020-10-27 14:05:29,177 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 173 [2020-10-27 14:05:29,177 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 14:05:29,177 INFO L422 BasicCegarLoop]: trace histogram [60, 60, 9, 9, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 14:05:29,177 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2020-10-27 14:05:29,178 INFO L429 AbstractCegarLoop]: === Iteration 22 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 14:05:29,178 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 14:05:29,178 INFO L82 PathProgramCache]: Analyzing trace with hash -1828815145, now seen corresponding path program 9 times [2020-10-27 14:05:29,178 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 14:05:29,179 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2135518676] [2020-10-27 14:05:29,179 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 14:05:29,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:05:29,196 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:05:29,209 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:05:29,252 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:05:29,280 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:05:34,200 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:05:34,200 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 186 [2020-10-27 14:05:34,200 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-27 14:05:34,201 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5007 [2020-10-27 14:05:34,201 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:05:34,201 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-27 14:05:34,201 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 110 [2020-10-27 14:05:34,201 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-10-27 14:05:34,201 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:05:34,330 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 14:05:34,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:05:34,332 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:05:34,334 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:05:34,334 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 14:05:34,334 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:05:34,334 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 14:05:34,334 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:05:34,335 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:05:34,335 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:05:34,335 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:05:34,335 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:05:34,336 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-27 14:05:34,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:05:34,338 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:05:34,342 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:05:34,440 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:05:34,440 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 50 [2020-10-27 14:05:34,440 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 14:05:34,441 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 102 [2020-10-27 14:05:34,441 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:05:34,441 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 22 [2020-10-27 14:05:34,441 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 14:05:34,441 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 42 [2020-10-27 14:05:34,441 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:05:34,993 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2020-10-27 14:05:34,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:05:34,995 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:05:35,000 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:05:35,097 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:05:35,097 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 50 [2020-10-27 14:05:35,097 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 14:05:35,098 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 102 [2020-10-27 14:05:35,098 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:05:35,098 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 22 [2020-10-27 14:05:35,098 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 14:05:35,098 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 42 [2020-10-27 14:05:35,098 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:05:35,108 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2020-10-27 14:05:35,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:05:35,116 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:05:35,121 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:05:35,235 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:05:35,236 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 50 [2020-10-27 14:05:35,236 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 14:05:35,236 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 121 [2020-10-27 14:05:35,236 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:05:35,236 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:05:35,236 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 47 [2020-10-27 14:05:35,236 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:05:35,236 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:05:35,263 INFO L134 CoverageAnalysis]: Checked inductivity of 3816 backedges. 400 proven. 2969 refuted. 0 times theorem prover too weak. 447 trivial. 0 not checked. [2020-10-27 14:05:35,263 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2135518676] [2020-10-27 14:05:35,263 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 14:05:35,263 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [34] total 34 [2020-10-27 14:05:35,264 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1153624478] [2020-10-27 14:05:35,265 INFO L461 AbstractCegarLoop]: Interpolant automaton has 34 states [2020-10-27 14:05:35,265 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 14:05:35,265 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2020-10-27 14:05:35,266 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=320, Invalid=802, Unknown=0, NotChecked=0, Total=1122 [2020-10-27 14:05:35,266 INFO L87 Difference]: Start difference. First operand 84 states and 88 transitions. Second operand 34 states. [2020-10-27 14:05:36,745 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 14:05:36,745 INFO L93 Difference]: Finished difference Result 165 states and 176 transitions. [2020-10-27 14:05:36,746 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2020-10-27 14:05:36,746 INFO L78 Accepts]: Start accepts. Automaton has 34 states. Word has length 172 [2020-10-27 14:05:36,746 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 14:05:36,747 INFO L225 Difference]: With dead ends: 165 [2020-10-27 14:05:36,747 INFO L226 Difference]: Without dead ends: 90 [2020-10-27 14:05:36,749 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 83 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 408 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=824, Invalid=2146, Unknown=0, NotChecked=0, Total=2970 [2020-10-27 14:05:36,749 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 90 states. [2020-10-27 14:05:36,754 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 90 to 88. [2020-10-27 14:05:36,755 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 88 states. [2020-10-27 14:05:36,755 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 88 states to 88 states and 92 transitions. [2020-10-27 14:05:36,756 INFO L78 Accepts]: Start accepts. Automaton has 88 states and 92 transitions. Word has length 172 [2020-10-27 14:05:36,756 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 14:05:36,756 INFO L481 AbstractCegarLoop]: Abstraction has 88 states and 92 transitions. [2020-10-27 14:05:36,756 INFO L482 AbstractCegarLoop]: Interpolant automaton has 34 states. [2020-10-27 14:05:36,756 INFO L276 IsEmpty]: Start isEmpty. Operand 88 states and 92 transitions. [2020-10-27 14:05:36,757 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 181 [2020-10-27 14:05:36,758 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 14:05:36,758 INFO L422 BasicCegarLoop]: trace histogram [63, 63, 10, 10, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 14:05:36,758 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2020-10-27 14:05:36,758 INFO L429 AbstractCegarLoop]: === Iteration 23 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 14:05:36,758 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 14:05:36,759 INFO L82 PathProgramCache]: Analyzing trace with hash 398962259, now seen corresponding path program 10 times [2020-10-27 14:05:36,759 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 14:05:36,759 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2062690571] [2020-10-27 14:05:36,759 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 14:05:36,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:05:36,772 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:05:36,789 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:05:36,838 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:05:36,887 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:05:41,777 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:05:41,778 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 194 [2020-10-27 14:05:41,778 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-27 14:05:41,778 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5008 [2020-10-27 14:05:41,778 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:05:41,778 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-27 14:05:41,778 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 114 [2020-10-27 14:05:41,778 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-10-27 14:05:41,778 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:05:41,927 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 14:05:41,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:05:41,930 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:05:41,931 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:05:41,931 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 14:05:41,931 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:05:41,932 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 14:05:41,932 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:05:41,932 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:05:41,932 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:05:41,932 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:05:41,932 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:05:41,934 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-27 14:05:41,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:05:41,936 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:05:41,954 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:05:42,020 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:05:42,020 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 52 [2020-10-27 14:05:42,020 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 14:05:42,020 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 83 [2020-10-27 14:05:42,020 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:05:42,020 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 23 [2020-10-27 14:05:42,020 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 14:05:42,021 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 44 [2020-10-27 14:05:42,021 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:05:42,632 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2020-10-27 14:05:42,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:05:42,636 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:05:42,640 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:05:42,751 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:05:42,751 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 52 [2020-10-27 14:05:42,751 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 14:05:42,751 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 115 [2020-10-27 14:05:42,751 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:05:42,751 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 23 [2020-10-27 14:05:42,752 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 14:05:42,752 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 44 [2020-10-27 14:05:42,752 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:05:42,760 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2020-10-27 14:05:42,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:05:42,766 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:05:42,769 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:05:42,883 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:05:42,884 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 52 [2020-10-27 14:05:42,884 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 14:05:42,884 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 119 [2020-10-27 14:05:42,884 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:05:42,884 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:05:42,884 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 49 [2020-10-27 14:05:42,884 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:05:42,884 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:05:42,912 INFO L134 CoverageAnalysis]: Checked inductivity of 4210 backedges. 441 proven. 3279 refuted. 0 times theorem prover too weak. 490 trivial. 0 not checked. [2020-10-27 14:05:42,912 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2062690571] [2020-10-27 14:05:42,912 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 14:05:42,912 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [36] total 36 [2020-10-27 14:05:42,913 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2009369277] [2020-10-27 14:05:42,913 INFO L461 AbstractCegarLoop]: Interpolant automaton has 36 states [2020-10-27 14:05:42,913 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 14:05:42,914 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2020-10-27 14:05:42,915 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=355, Invalid=905, Unknown=0, NotChecked=0, Total=1260 [2020-10-27 14:05:42,915 INFO L87 Difference]: Start difference. First operand 88 states and 92 transitions. Second operand 36 states. [2020-10-27 14:05:44,404 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 14:05:44,405 INFO L93 Difference]: Finished difference Result 173 states and 184 transitions. [2020-10-27 14:05:44,405 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2020-10-27 14:05:44,406 INFO L78 Accepts]: Start accepts. Automaton has 36 states. Word has length 180 [2020-10-27 14:05:44,406 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 14:05:44,407 INFO L225 Difference]: With dead ends: 173 [2020-10-27 14:05:44,407 INFO L226 Difference]: Without dead ends: 94 [2020-10-27 14:05:44,409 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 87 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 461 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=905, Invalid=2401, Unknown=0, NotChecked=0, Total=3306 [2020-10-27 14:05:44,410 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 94 states. [2020-10-27 14:05:44,414 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 94 to 92. [2020-10-27 14:05:44,414 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 92 states. [2020-10-27 14:05:44,415 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 92 states to 92 states and 96 transitions. [2020-10-27 14:05:44,415 INFO L78 Accepts]: Start accepts. Automaton has 92 states and 96 transitions. Word has length 180 [2020-10-27 14:05:44,415 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 14:05:44,415 INFO L481 AbstractCegarLoop]: Abstraction has 92 states and 96 transitions. [2020-10-27 14:05:44,415 INFO L482 AbstractCegarLoop]: Interpolant automaton has 36 states. [2020-10-27 14:05:44,416 INFO L276 IsEmpty]: Start isEmpty. Operand 92 states and 96 transitions. [2020-10-27 14:05:44,417 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 189 [2020-10-27 14:05:44,417 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 14:05:44,417 INFO L422 BasicCegarLoop]: trace histogram [66, 66, 11, 11, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 14:05:44,417 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2020-10-27 14:05:44,417 INFO L429 AbstractCegarLoop]: === Iteration 24 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 14:05:44,418 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 14:05:44,418 INFO L82 PathProgramCache]: Analyzing trace with hash 1875030223, now seen corresponding path program 11 times [2020-10-27 14:05:44,418 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 14:05:44,418 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1854252841] [2020-10-27 14:05:44,418 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 14:05:44,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:05:44,431 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:05:44,443 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:05:44,474 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:05:44,510 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:05:49,433 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:05:49,434 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 202 [2020-10-27 14:05:49,434 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-27 14:05:49,434 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5005 [2020-10-27 14:05:49,434 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:05:49,434 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-10-27 14:05:49,434 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 118 [2020-10-27 14:05:49,434 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-10-27 14:05:49,434 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:05:49,610 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 14:05:49,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:05:49,612 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:05:49,614 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:05:49,614 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 14:05:49,615 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:05:49,615 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 14:05:49,615 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:05:49,615 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:05:49,615 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:05:49,615 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:05:49,615 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:05:49,616 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-27 14:05:49,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:05:49,618 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:05:49,621 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:05:49,741 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:05:49,741 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 54 [2020-10-27 14:05:49,741 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 14:05:49,742 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 123 [2020-10-27 14:05:49,742 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:05:49,742 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 24 [2020-10-27 14:05:49,742 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 14:05:49,742 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 46 [2020-10-27 14:05:49,742 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:05:50,422 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2020-10-27 14:05:50,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:05:50,424 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:05:50,427 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:05:50,545 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:05:50,545 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 54 [2020-10-27 14:05:50,545 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 14:05:50,545 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 120 [2020-10-27 14:05:50,546 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:05:50,546 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 24 [2020-10-27 14:05:50,546 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 14:05:50,546 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 46 [2020-10-27 14:05:50,546 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:05:50,556 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2020-10-27 14:05:50,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:05:50,563 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:05:50,567 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:05:50,677 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:05:50,677 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 54 [2020-10-27 14:05:50,677 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 14:05:50,678 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 116 [2020-10-27 14:05:50,678 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:05:50,678 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:05:50,678 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 51 [2020-10-27 14:05:50,678 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:05:50,678 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:05:50,707 INFO L134 CoverageAnalysis]: Checked inductivity of 4624 backedges. 484 proven. 3605 refuted. 0 times theorem prover too weak. 535 trivial. 0 not checked. [2020-10-27 14:05:50,708 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1854252841] [2020-10-27 14:05:50,708 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 14:05:50,708 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [38] total 38 [2020-10-27 14:05:50,708 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1165395315] [2020-10-27 14:05:50,709 INFO L461 AbstractCegarLoop]: Interpolant automaton has 38 states [2020-10-27 14:05:50,709 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 14:05:50,709 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2020-10-27 14:05:50,710 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=392, Invalid=1014, Unknown=0, NotChecked=0, Total=1406 [2020-10-27 14:05:50,710 INFO L87 Difference]: Start difference. First operand 92 states and 96 transitions. Second operand 38 states. [2020-10-27 14:05:52,432 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 14:05:52,432 INFO L93 Difference]: Finished difference Result 181 states and 192 transitions. [2020-10-27 14:05:52,433 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2020-10-27 14:05:52,433 INFO L78 Accepts]: Start accepts. Automaton has 38 states. Word has length 188 [2020-10-27 14:05:52,433 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 14:05:52,434 INFO L225 Difference]: With dead ends: 181 [2020-10-27 14:05:52,435 INFO L226 Difference]: Without dead ends: 98 [2020-10-27 14:05:52,437 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 91 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 59 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 517 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=990, Invalid=2670, Unknown=0, NotChecked=0, Total=3660 [2020-10-27 14:05:52,437 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 98 states. [2020-10-27 14:05:52,442 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 98 to 96. [2020-10-27 14:05:52,443 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 96 states. [2020-10-27 14:05:52,444 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 96 states to 96 states and 100 transitions. [2020-10-27 14:05:52,444 INFO L78 Accepts]: Start accepts. Automaton has 96 states and 100 transitions. Word has length 188 [2020-10-27 14:05:52,444 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 14:05:52,444 INFO L481 AbstractCegarLoop]: Abstraction has 96 states and 100 transitions. [2020-10-27 14:05:52,444 INFO L482 AbstractCegarLoop]: Interpolant automaton has 38 states. [2020-10-27 14:05:52,444 INFO L276 IsEmpty]: Start isEmpty. Operand 96 states and 100 transitions. [2020-10-27 14:05:52,445 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 197 [2020-10-27 14:05:52,445 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 14:05:52,445 INFO L422 BasicCegarLoop]: trace histogram [69, 69, 12, 12, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 14:05:52,446 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2020-10-27 14:05:52,446 INFO L429 AbstractCegarLoop]: === Iteration 25 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 14:05:52,446 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 14:05:52,446 INFO L82 PathProgramCache]: Analyzing trace with hash 944522827, now seen corresponding path program 12 times [2020-10-27 14:05:52,446 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 14:05:52,447 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [285601348] [2020-10-27 14:05:52,447 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 14:05:52,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:05:52,459 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:05:52,499 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:05:52,518 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:05:52,553 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:05:57,469 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:05:57,469 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 210 [2020-10-27 14:05:57,469 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-27 14:05:57,469 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5012 [2020-10-27 14:05:57,469 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:05:57,469 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-10-27 14:05:57,470 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 122 [2020-10-27 14:05:57,470 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-10-27 14:05:57,470 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:05:57,666 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 14:05:57,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:05:57,669 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:05:57,671 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:05:57,671 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 14:05:57,671 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:05:57,671 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 14:05:57,671 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:05:57,672 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:05:57,672 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:05:57,672 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:05:57,672 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:05:57,674 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-27 14:05:57,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:05:57,676 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:05:57,680 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:05:57,823 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:05:57,823 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 56 [2020-10-27 14:05:57,823 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 14:05:57,823 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 147 [2020-10-27 14:05:57,823 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:05:57,824 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 25 [2020-10-27 14:05:57,824 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 14:05:57,824 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 48 [2020-10-27 14:05:57,824 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:05:58,531 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2020-10-27 14:05:58,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:05:58,533 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:05:58,536 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:05:58,662 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:05:58,663 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 56 [2020-10-27 14:05:58,663 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 14:05:58,663 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 129 [2020-10-27 14:05:58,663 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:05:58,663 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 25 [2020-10-27 14:05:58,663 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 14:05:58,663 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 48 [2020-10-27 14:05:58,664 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:05:58,677 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2020-10-27 14:05:58,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:05:58,685 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:05:58,691 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:05:58,853 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:05:58,853 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 56 [2020-10-27 14:05:58,853 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 14:05:58,853 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 171 [2020-10-27 14:05:58,854 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:05:58,854 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:05:58,854 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 53 [2020-10-27 14:05:58,854 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:05:58,854 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:05:58,891 INFO L134 CoverageAnalysis]: Checked inductivity of 5058 backedges. 529 proven. 3947 refuted. 0 times theorem prover too weak. 582 trivial. 0 not checked. [2020-10-27 14:05:58,891 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [285601348] [2020-10-27 14:05:58,892 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 14:05:58,892 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [40] total 40 [2020-10-27 14:05:58,892 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [906896951] [2020-10-27 14:05:58,892 INFO L461 AbstractCegarLoop]: Interpolant automaton has 40 states [2020-10-27 14:05:58,892 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 14:05:58,893 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 40 interpolants. [2020-10-27 14:05:58,893 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=431, Invalid=1129, Unknown=0, NotChecked=0, Total=1560 [2020-10-27 14:05:58,893 INFO L87 Difference]: Start difference. First operand 96 states and 100 transitions. Second operand 40 states. [2020-10-27 14:06:00,477 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 14:06:00,477 INFO L93 Difference]: Finished difference Result 189 states and 200 transitions. [2020-10-27 14:06:00,477 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2020-10-27 14:06:00,478 INFO L78 Accepts]: Start accepts. Automaton has 40 states. Word has length 196 [2020-10-27 14:06:00,478 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 14:06:00,479 INFO L225 Difference]: With dead ends: 189 [2020-10-27 14:06:00,479 INFO L226 Difference]: Without dead ends: 102 [2020-10-27 14:06:00,482 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 95 GetRequests, 33 SyntacticMatches, 0 SemanticMatches, 62 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 576 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=1079, Invalid=2953, Unknown=0, NotChecked=0, Total=4032 [2020-10-27 14:06:00,483 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 102 states. [2020-10-27 14:06:00,487 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 102 to 100. [2020-10-27 14:06:00,487 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 100 states. [2020-10-27 14:06:00,488 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 100 states to 100 states and 104 transitions. [2020-10-27 14:06:00,488 INFO L78 Accepts]: Start accepts. Automaton has 100 states and 104 transitions. Word has length 196 [2020-10-27 14:06:00,488 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 14:06:00,488 INFO L481 AbstractCegarLoop]: Abstraction has 100 states and 104 transitions. [2020-10-27 14:06:00,489 INFO L482 AbstractCegarLoop]: Interpolant automaton has 40 states. [2020-10-27 14:06:00,489 INFO L276 IsEmpty]: Start isEmpty. Operand 100 states and 104 transitions. [2020-10-27 14:06:00,490 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 205 [2020-10-27 14:06:00,490 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 14:06:00,490 INFO L422 BasicCegarLoop]: trace histogram [72, 72, 13, 13, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 14:06:00,490 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2020-10-27 14:06:00,490 INFO L429 AbstractCegarLoop]: === Iteration 26 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 14:06:00,491 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 14:06:00,491 INFO L82 PathProgramCache]: Analyzing trace with hash -1649332537, now seen corresponding path program 13 times [2020-10-27 14:06:00,491 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 14:06:00,491 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [433704667] [2020-10-27 14:06:00,491 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 14:06:00,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:06:00,501 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:06:00,516 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:06:00,563 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:06:00,620 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:06:05,504 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:06:05,504 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 218 [2020-10-27 14:06:05,504 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-27 14:06:05,504 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5004 [2020-10-27 14:06:05,504 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:06:05,504 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-10-27 14:06:05,505 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 126 [2020-10-27 14:06:05,505 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-10-27 14:06:05,505 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:06:05,715 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 14:06:05,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:06:05,717 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:06:05,719 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:06:05,719 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 14:06:05,719 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:06:05,719 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 14:06:05,720 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:06:05,720 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:06:05,720 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:06:05,720 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:06:05,720 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:06:05,721 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-27 14:06:05,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:06:05,723 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:06:05,727 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:06:05,867 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:06:05,868 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 58 [2020-10-27 14:06:05,868 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 14:06:05,868 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 144 [2020-10-27 14:06:05,868 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:06:05,868 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 26 [2020-10-27 14:06:05,868 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 14:06:05,868 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 50 [2020-10-27 14:06:05,868 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:06:06,628 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2020-10-27 14:06:06,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:06:06,632 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:06:06,636 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:06:06,770 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:06:06,771 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 58 [2020-10-27 14:06:06,771 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 14:06:06,771 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 139 [2020-10-27 14:06:06,771 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:06:06,771 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 26 [2020-10-27 14:06:06,771 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 14:06:06,771 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 50 [2020-10-27 14:06:06,771 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:06:06,783 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 145 [2020-10-27 14:06:06,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:06:06,791 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:06:06,794 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:06:06,917 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:06:06,918 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 58 [2020-10-27 14:06:06,918 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 14:06:06,918 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 129 [2020-10-27 14:06:06,918 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:06:06,918 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:06:06,918 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 55 [2020-10-27 14:06:06,918 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:06:06,918 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:06:06,953 INFO L134 CoverageAnalysis]: Checked inductivity of 5512 backedges. 576 proven. 4305 refuted. 0 times theorem prover too weak. 631 trivial. 0 not checked. [2020-10-27 14:06:06,954 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [433704667] [2020-10-27 14:06:06,954 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 14:06:06,954 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [42] total 42 [2020-10-27 14:06:06,954 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [562229777] [2020-10-27 14:06:06,955 INFO L461 AbstractCegarLoop]: Interpolant automaton has 42 states [2020-10-27 14:06:06,955 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 14:06:06,956 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 42 interpolants. [2020-10-27 14:06:06,956 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=472, Invalid=1250, Unknown=0, NotChecked=0, Total=1722 [2020-10-27 14:06:06,956 INFO L87 Difference]: Start difference. First operand 100 states and 104 transitions. Second operand 42 states. [2020-10-27 14:06:08,901 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 14:06:08,901 INFO L93 Difference]: Finished difference Result 197 states and 208 transitions. [2020-10-27 14:06:08,902 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2020-10-27 14:06:08,902 INFO L78 Accepts]: Start accepts. Automaton has 42 states. Word has length 204 [2020-10-27 14:06:08,902 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 14:06:08,903 INFO L225 Difference]: With dead ends: 197 [2020-10-27 14:06:08,903 INFO L226 Difference]: Without dead ends: 106 [2020-10-27 14:06:08,905 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 99 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 65 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 638 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=1172, Invalid=3250, Unknown=0, NotChecked=0, Total=4422 [2020-10-27 14:06:08,906 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 106 states. [2020-10-27 14:06:08,912 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 106 to 104. [2020-10-27 14:06:08,912 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 104 states. [2020-10-27 14:06:08,913 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 104 states to 104 states and 108 transitions. [2020-10-27 14:06:08,913 INFO L78 Accepts]: Start accepts. Automaton has 104 states and 108 transitions. Word has length 204 [2020-10-27 14:06:08,914 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 14:06:08,914 INFO L481 AbstractCegarLoop]: Abstraction has 104 states and 108 transitions. [2020-10-27 14:06:08,914 INFO L482 AbstractCegarLoop]: Interpolant automaton has 42 states. [2020-10-27 14:06:08,914 INFO L276 IsEmpty]: Start isEmpty. Operand 104 states and 108 transitions. [2020-10-27 14:06:08,915 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 213 [2020-10-27 14:06:08,915 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 14:06:08,916 INFO L422 BasicCegarLoop]: trace histogram [75, 75, 14, 14, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 14:06:08,916 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2020-10-27 14:06:08,916 INFO L429 AbstractCegarLoop]: === Iteration 27 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 14:06:08,916 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 14:06:08,917 INFO L82 PathProgramCache]: Analyzing trace with hash 657336899, now seen corresponding path program 14 times [2020-10-27 14:06:08,917 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 14:06:08,917 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1760941594] [2020-10-27 14:06:08,917 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 14:06:08,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:06:08,931 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:06:08,954 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:06:09,024 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:06:09,089 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:06:13,943 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:06:13,944 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 226 [2020-10-27 14:06:13,944 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-27 14:06:13,944 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5015 [2020-10-27 14:06:13,944 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:06:13,944 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 16 [2020-10-27 14:06:13,944 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 130 [2020-10-27 14:06:13,944 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-10-27 14:06:13,944 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:06:14,183 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 14:06:14,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:06:14,186 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:06:14,187 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:06:14,188 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 14:06:14,188 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:06:14,188 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 14:06:14,188 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:06:14,188 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:06:14,188 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:06:14,188 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:06:14,188 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:06:14,190 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-27 14:06:14,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:06:14,191 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:06:14,194 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:06:14,325 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:06:14,325 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 60 [2020-10-27 14:06:14,325 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 14:06:14,325 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 133 [2020-10-27 14:06:14,326 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:06:14,326 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 27 [2020-10-27 14:06:14,326 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 14:06:14,326 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 52 [2020-10-27 14:06:14,326 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:06:15,153 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2020-10-27 14:06:15,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:06:15,155 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:06:15,157 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:06:15,290 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:06:15,291 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 60 [2020-10-27 14:06:15,291 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 14:06:15,291 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 136 [2020-10-27 14:06:15,291 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:06:15,291 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 27 [2020-10-27 14:06:15,291 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 14:06:15,291 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 52 [2020-10-27 14:06:15,291 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:06:15,300 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 151 [2020-10-27 14:06:15,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:06:15,306 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:06:15,311 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:06:15,410 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:06:15,411 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 60 [2020-10-27 14:06:15,411 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 14:06:15,411 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 106 [2020-10-27 14:06:15,411 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:06:15,411 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:06:15,411 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 57 [2020-10-27 14:06:15,411 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:06:15,411 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:06:15,446 INFO L134 CoverageAnalysis]: Checked inductivity of 5986 backedges. 625 proven. 4679 refuted. 0 times theorem prover too weak. 682 trivial. 0 not checked. [2020-10-27 14:06:15,447 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1760941594] [2020-10-27 14:06:15,447 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 14:06:15,447 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [44] total 44 [2020-10-27 14:06:15,447 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [36894126] [2020-10-27 14:06:15,448 INFO L461 AbstractCegarLoop]: Interpolant automaton has 44 states [2020-10-27 14:06:15,448 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 14:06:15,448 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 44 interpolants. [2020-10-27 14:06:15,449 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=515, Invalid=1377, Unknown=0, NotChecked=0, Total=1892 [2020-10-27 14:06:15,449 INFO L87 Difference]: Start difference. First operand 104 states and 108 transitions. Second operand 44 states. [2020-10-27 14:06:17,531 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 14:06:17,531 INFO L93 Difference]: Finished difference Result 205 states and 216 transitions. [2020-10-27 14:06:17,531 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2020-10-27 14:06:17,532 INFO L78 Accepts]: Start accepts. Automaton has 44 states. Word has length 212 [2020-10-27 14:06:17,533 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 14:06:17,534 INFO L225 Difference]: With dead ends: 205 [2020-10-27 14:06:17,534 INFO L226 Difference]: Without dead ends: 110 [2020-10-27 14:06:17,536 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 103 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 68 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 703 ImplicationChecksByTransitivity, 2.5s TimeCoverageRelationStatistics Valid=1269, Invalid=3561, Unknown=0, NotChecked=0, Total=4830 [2020-10-27 14:06:17,537 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 110 states. [2020-10-27 14:06:17,546 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 110 to 108. [2020-10-27 14:06:17,546 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 108 states. [2020-10-27 14:06:17,549 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 108 states to 108 states and 112 transitions. [2020-10-27 14:06:17,549 INFO L78 Accepts]: Start accepts. Automaton has 108 states and 112 transitions. Word has length 212 [2020-10-27 14:06:17,549 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 14:06:17,549 INFO L481 AbstractCegarLoop]: Abstraction has 108 states and 112 transitions. [2020-10-27 14:06:17,549 INFO L482 AbstractCegarLoop]: Interpolant automaton has 44 states. [2020-10-27 14:06:17,550 INFO L276 IsEmpty]: Start isEmpty. Operand 108 states and 112 transitions. [2020-10-27 14:06:17,551 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 221 [2020-10-27 14:06:17,551 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 14:06:17,551 INFO L422 BasicCegarLoop]: trace histogram [78, 78, 15, 15, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 14:06:17,551 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2020-10-27 14:06:17,552 INFO L429 AbstractCegarLoop]: === Iteration 28 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 14:06:17,552 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 14:06:17,552 INFO L82 PathProgramCache]: Analyzing trace with hash -2098202433, now seen corresponding path program 15 times [2020-10-27 14:06:17,552 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 14:06:17,553 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1043698679] [2020-10-27 14:06:17,553 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 14:06:17,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:06:17,569 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:06:17,591 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:06:17,668 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:06:17,734 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:06:22,581 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:06:22,581 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 234 [2020-10-27 14:06:22,581 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-27 14:06:22,581 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5014 [2020-10-27 14:06:22,581 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:06:22,581 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 17 [2020-10-27 14:06:22,582 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 134 [2020-10-27 14:06:22,582 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 32 [2020-10-27 14:06:22,582 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:06:22,833 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 14:06:22,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:06:22,835 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:06:22,837 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:06:22,837 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 14:06:22,837 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:06:22,837 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 14:06:22,837 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:06:22,837 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:06:22,837 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:06:22,838 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:06:22,838 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:06:22,839 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-27 14:06:22,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:06:22,840 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:06:22,845 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:06:23,012 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:06:23,012 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 62 [2020-10-27 14:06:23,012 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 14:06:23,012 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 171 [2020-10-27 14:06:23,012 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:06:23,013 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 28 [2020-10-27 14:06:23,013 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 14:06:23,013 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 54 [2020-10-27 14:06:23,013 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:06:24,034 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2020-10-27 14:06:24,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:06:24,037 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:06:24,041 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:06:24,248 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:06:24,248 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 62 [2020-10-27 14:06:24,248 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 14:06:24,249 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 211 [2020-10-27 14:06:24,249 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:06:24,249 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 28 [2020-10-27 14:06:24,249 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 14:06:24,249 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 54 [2020-10-27 14:06:24,249 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:06:24,264 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 157 [2020-10-27 14:06:24,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:06:24,274 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:06:24,284 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:06:24,468 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:06:24,469 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 62 [2020-10-27 14:06:24,469 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 14:06:24,469 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 198 [2020-10-27 14:06:24,469 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:06:24,470 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:06:24,470 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 59 [2020-10-27 14:06:24,470 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:06:24,470 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:06:24,559 INFO L134 CoverageAnalysis]: Checked inductivity of 6480 backedges. 676 proven. 5069 refuted. 0 times theorem prover too weak. 735 trivial. 0 not checked. [2020-10-27 14:06:24,559 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1043698679] [2020-10-27 14:06:24,559 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 14:06:24,559 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [46] total 46 [2020-10-27 14:06:24,559 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [861953589] [2020-10-27 14:06:24,560 INFO L461 AbstractCegarLoop]: Interpolant automaton has 46 states [2020-10-27 14:06:24,560 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 14:06:24,561 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 46 interpolants. [2020-10-27 14:06:24,561 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=560, Invalid=1510, Unknown=0, NotChecked=0, Total=2070 [2020-10-27 14:06:24,562 INFO L87 Difference]: Start difference. First operand 108 states and 112 transitions. Second operand 46 states. [2020-10-27 14:06:26,755 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 14:06:26,755 INFO L93 Difference]: Finished difference Result 213 states and 224 transitions. [2020-10-27 14:06:26,756 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2020-10-27 14:06:26,756 INFO L78 Accepts]: Start accepts. Automaton has 46 states. Word has length 220 [2020-10-27 14:06:26,756 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 14:06:26,757 INFO L225 Difference]: With dead ends: 213 [2020-10-27 14:06:26,757 INFO L226 Difference]: Without dead ends: 114 [2020-10-27 14:06:26,760 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 107 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 71 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 771 ImplicationChecksByTransitivity, 2.8s TimeCoverageRelationStatistics Valid=1370, Invalid=3886, Unknown=0, NotChecked=0, Total=5256 [2020-10-27 14:06:26,760 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 114 states. [2020-10-27 14:06:26,764 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 114 to 112. [2020-10-27 14:06:26,765 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 112 states. [2020-10-27 14:06:26,765 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 112 states to 112 states and 116 transitions. [2020-10-27 14:06:26,766 INFO L78 Accepts]: Start accepts. Automaton has 112 states and 116 transitions. Word has length 220 [2020-10-27 14:06:26,766 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 14:06:26,766 INFO L481 AbstractCegarLoop]: Abstraction has 112 states and 116 transitions. [2020-10-27 14:06:26,766 INFO L482 AbstractCegarLoop]: Interpolant automaton has 46 states. [2020-10-27 14:06:26,766 INFO L276 IsEmpty]: Start isEmpty. Operand 112 states and 116 transitions. [2020-10-27 14:06:26,767 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 229 [2020-10-27 14:06:26,767 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 14:06:26,768 INFO L422 BasicCegarLoop]: trace histogram [81, 81, 16, 16, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 14:06:26,768 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2020-10-27 14:06:26,768 INFO L429 AbstractCegarLoop]: === Iteration 29 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 14:06:26,768 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 14:06:26,768 INFO L82 PathProgramCache]: Analyzing trace with hash 1376999995, now seen corresponding path program 16 times [2020-10-27 14:06:26,768 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 14:06:26,769 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [839100531] [2020-10-27 14:06:26,769 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 14:06:26,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:06:26,782 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:06:26,801 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:06:26,850 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:06:26,895 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:06:31,784 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:06:31,784 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 242 [2020-10-27 14:06:31,784 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-27 14:06:31,784 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5004 [2020-10-27 14:06:31,784 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:06:31,784 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 18 [2020-10-27 14:06:31,784 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 138 [2020-10-27 14:06:31,784 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 34 [2020-10-27 14:06:31,784 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:06:32,071 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 14:06:32,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:06:32,074 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:06:32,076 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:06:32,076 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 14:06:32,076 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:06:32,076 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 14:06:32,076 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:06:32,076 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:06:32,077 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:06:32,077 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:06:32,077 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:06:32,078 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-27 14:06:32,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:06:32,081 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:06:32,086 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:06:32,264 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:06:32,264 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 64 [2020-10-27 14:06:32,264 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 14:06:32,264 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 183 [2020-10-27 14:06:32,264 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:06:32,264 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 29 [2020-10-27 14:06:32,265 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 14:06:32,265 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 56 [2020-10-27 14:06:32,265 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:06:33,261 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2020-10-27 14:06:33,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:06:33,263 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:06:33,268 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:06:33,433 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:06:33,433 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 64 [2020-10-27 14:06:33,433 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 14:06:33,433 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 169 [2020-10-27 14:06:33,433 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:06:33,433 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 29 [2020-10-27 14:06:33,433 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 14:06:33,433 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 56 [2020-10-27 14:06:33,434 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:06:33,444 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 163 [2020-10-27 14:06:33,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:06:33,451 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:06:33,458 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:06:33,645 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:06:33,645 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 64 [2020-10-27 14:06:33,646 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 14:06:33,646 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 196 [2020-10-27 14:06:33,646 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:06:33,646 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:06:33,646 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 61 [2020-10-27 14:06:33,646 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:06:33,646 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:06:33,684 INFO L134 CoverageAnalysis]: Checked inductivity of 6994 backedges. 729 proven. 5475 refuted. 0 times theorem prover too weak. 790 trivial. 0 not checked. [2020-10-27 14:06:33,685 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [839100531] [2020-10-27 14:06:33,685 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 14:06:33,685 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [48] total 48 [2020-10-27 14:06:33,685 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1277978503] [2020-10-27 14:06:33,686 INFO L461 AbstractCegarLoop]: Interpolant automaton has 48 states [2020-10-27 14:06:33,686 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 14:06:33,686 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 48 interpolants. [2020-10-27 14:06:33,687 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=607, Invalid=1649, Unknown=0, NotChecked=0, Total=2256 [2020-10-27 14:06:33,687 INFO L87 Difference]: Start difference. First operand 112 states and 116 transitions. Second operand 48 states. [2020-10-27 14:06:35,986 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 14:06:35,986 INFO L93 Difference]: Finished difference Result 221 states and 232 transitions. [2020-10-27 14:06:35,987 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2020-10-27 14:06:35,987 INFO L78 Accepts]: Start accepts. Automaton has 48 states. Word has length 228 [2020-10-27 14:06:35,988 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 14:06:35,989 INFO L225 Difference]: With dead ends: 221 [2020-10-27 14:06:35,989 INFO L226 Difference]: Without dead ends: 118 [2020-10-27 14:06:35,990 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 111 GetRequests, 37 SyntacticMatches, 0 SemanticMatches, 74 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 842 ImplicationChecksByTransitivity, 2.9s TimeCoverageRelationStatistics Valid=1475, Invalid=4225, Unknown=0, NotChecked=0, Total=5700 [2020-10-27 14:06:35,991 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 118 states. [2020-10-27 14:06:35,997 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 118 to 116. [2020-10-27 14:06:35,998 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 116 states. [2020-10-27 14:06:35,999 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 116 states to 116 states and 120 transitions. [2020-10-27 14:06:35,999 INFO L78 Accepts]: Start accepts. Automaton has 116 states and 120 transitions. Word has length 228 [2020-10-27 14:06:35,999 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 14:06:35,999 INFO L481 AbstractCegarLoop]: Abstraction has 116 states and 120 transitions. [2020-10-27 14:06:35,999 INFO L482 AbstractCegarLoop]: Interpolant automaton has 48 states. [2020-10-27 14:06:36,000 INFO L276 IsEmpty]: Start isEmpty. Operand 116 states and 120 transitions. [2020-10-27 14:06:36,001 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 237 [2020-10-27 14:06:36,001 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 14:06:36,001 INFO L422 BasicCegarLoop]: trace histogram [84, 84, 17, 17, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 14:06:36,001 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2020-10-27 14:06:36,002 INFO L429 AbstractCegarLoop]: === Iteration 30 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 14:06:36,002 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 14:06:36,002 INFO L82 PathProgramCache]: Analyzing trace with hash -190509385, now seen corresponding path program 17 times [2020-10-27 14:06:36,002 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 14:06:36,002 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1629736073] [2020-10-27 14:06:36,003 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 14:06:36,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:06:36,018 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:06:36,043 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:06:36,148 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:06:36,218 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:06:41,015 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:06:41,016 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 250 [2020-10-27 14:06:41,016 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-27 14:06:41,016 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-10-27 14:06:41,016 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:06:41,016 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 19 [2020-10-27 14:06:41,016 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 142 [2020-10-27 14:06:41,016 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 36 [2020-10-27 14:06:41,016 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:06:41,351 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 14:06:41,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:06:41,355 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:06:41,357 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:06:41,357 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 14:06:41,357 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:06:41,357 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 14:06:41,357 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:06:41,357 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:06:41,358 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:06:41,358 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:06:41,358 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:06:41,359 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-27 14:06:41,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:06:41,360 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:06:41,363 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:06:41,547 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:06:41,547 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 66 [2020-10-27 14:06:41,548 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 14:06:41,548 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 186 [2020-10-27 14:06:41,548 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:06:41,548 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 30 [2020-10-27 14:06:41,548 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 14:06:41,548 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 58 [2020-10-27 14:06:41,548 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:06:42,606 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2020-10-27 14:06:42,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:06:42,608 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:06:42,612 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:06:42,781 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:06:42,781 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 66 [2020-10-27 14:06:42,782 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 14:06:42,782 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 173 [2020-10-27 14:06:42,782 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:06:42,782 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 30 [2020-10-27 14:06:42,782 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 14:06:42,782 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 58 [2020-10-27 14:06:42,782 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:06:42,801 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 169 [2020-10-27 14:06:42,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:06:42,810 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:06:42,821 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:06:43,006 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:06:43,007 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 66 [2020-10-27 14:06:43,007 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 14:06:43,007 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 199 [2020-10-27 14:06:43,007 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:06:43,007 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:06:43,007 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 63 [2020-10-27 14:06:43,007 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:06:43,007 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:06:43,048 INFO L134 CoverageAnalysis]: Checked inductivity of 7528 backedges. 784 proven. 5897 refuted. 0 times theorem prover too weak. 847 trivial. 0 not checked. [2020-10-27 14:06:43,048 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1629736073] [2020-10-27 14:06:43,048 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 14:06:43,048 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [50] total 50 [2020-10-27 14:06:43,048 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [511791865] [2020-10-27 14:06:43,049 INFO L461 AbstractCegarLoop]: Interpolant automaton has 50 states [2020-10-27 14:06:43,049 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 14:06:43,049 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 50 interpolants. [2020-10-27 14:06:43,050 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=656, Invalid=1794, Unknown=0, NotChecked=0, Total=2450 [2020-10-27 14:06:43,050 INFO L87 Difference]: Start difference. First operand 116 states and 120 transitions. Second operand 50 states. [2020-10-27 14:06:45,514 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 14:06:45,514 INFO L93 Difference]: Finished difference Result 229 states and 240 transitions. [2020-10-27 14:06:45,514 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2020-10-27 14:06:45,515 INFO L78 Accepts]: Start accepts. Automaton has 50 states. Word has length 236 [2020-10-27 14:06:45,515 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 14:06:45,516 INFO L225 Difference]: With dead ends: 229 [2020-10-27 14:06:45,516 INFO L226 Difference]: Without dead ends: 122 [2020-10-27 14:06:45,518 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 115 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 77 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 916 ImplicationChecksByTransitivity, 3.1s TimeCoverageRelationStatistics Valid=1584, Invalid=4578, Unknown=0, NotChecked=0, Total=6162 [2020-10-27 14:06:45,519 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 122 states. [2020-10-27 14:06:45,526 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 122 to 120. [2020-10-27 14:06:45,526 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 120 states. [2020-10-27 14:06:45,527 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 120 states to 120 states and 124 transitions. [2020-10-27 14:06:45,527 INFO L78 Accepts]: Start accepts. Automaton has 120 states and 124 transitions. Word has length 236 [2020-10-27 14:06:45,527 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 14:06:45,527 INFO L481 AbstractCegarLoop]: Abstraction has 120 states and 124 transitions. [2020-10-27 14:06:45,527 INFO L482 AbstractCegarLoop]: Interpolant automaton has 50 states. [2020-10-27 14:06:45,528 INFO L276 IsEmpty]: Start isEmpty. Operand 120 states and 124 transitions. [2020-10-27 14:06:45,529 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 245 [2020-10-27 14:06:45,529 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 14:06:45,529 INFO L422 BasicCegarLoop]: trace histogram [87, 87, 18, 18, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 14:06:45,529 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2020-10-27 14:06:45,530 INFO L429 AbstractCegarLoop]: === Iteration 31 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 14:06:45,530 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 14:06:45,530 INFO L82 PathProgramCache]: Analyzing trace with hash 1436669491, now seen corresponding path program 18 times [2020-10-27 14:06:45,530 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 14:06:45,530 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [134115459] [2020-10-27 14:06:45,530 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 14:06:45,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:06:45,541 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:06:45,556 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:06:45,606 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:06:45,670 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:06:50,543 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:06:50,544 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 258 [2020-10-27 14:06:50,544 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-27 14:06:50,544 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5004 [2020-10-27 14:06:50,544 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:06:50,544 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 20 [2020-10-27 14:06:50,544 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 146 [2020-10-27 14:06:50,544 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 38 [2020-10-27 14:06:50,544 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:06:50,894 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 14:06:50,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:06:50,896 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:06:50,898 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:06:50,899 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 14:06:50,899 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:06:50,899 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 14:06:50,899 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:06:50,899 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:06:50,899 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:06:50,899 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:06:50,899 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:06:50,901 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-27 14:06:50,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:06:50,905 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:06:50,909 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:06:51,104 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:06:51,104 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 68 [2020-10-27 14:06:51,104 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 14:06:51,104 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 199 [2020-10-27 14:06:51,105 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:06:51,105 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 31 [2020-10-27 14:06:51,105 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 14:06:51,105 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 60 [2020-10-27 14:06:51,105 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:06:52,283 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2020-10-27 14:06:52,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:06:52,285 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:06:52,289 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:06:52,475 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:06:52,475 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 68 [2020-10-27 14:06:52,476 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 14:06:52,476 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 190 [2020-10-27 14:06:52,476 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:06:52,476 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 31 [2020-10-27 14:06:52,476 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 14:06:52,476 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 60 [2020-10-27 14:06:52,476 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:06:52,486 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2020-10-27 14:06:52,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:06:52,494 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:06:52,506 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:06:52,656 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:06:52,656 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 68 [2020-10-27 14:06:52,656 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 14:06:52,656 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 165 [2020-10-27 14:06:52,656 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:06:52,656 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:06:52,657 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 65 [2020-10-27 14:06:52,657 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:06:52,657 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:06:52,707 INFO L134 CoverageAnalysis]: Checked inductivity of 8082 backedges. 841 proven. 6335 refuted. 0 times theorem prover too weak. 906 trivial. 0 not checked. [2020-10-27 14:06:52,707 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [134115459] [2020-10-27 14:06:52,707 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 14:06:52,708 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [52] total 52 [2020-10-27 14:06:52,708 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1122999422] [2020-10-27 14:06:52,708 INFO L461 AbstractCegarLoop]: Interpolant automaton has 52 states [2020-10-27 14:06:52,708 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 14:06:52,708 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 52 interpolants. [2020-10-27 14:06:52,709 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=707, Invalid=1945, Unknown=0, NotChecked=0, Total=2652 [2020-10-27 14:06:52,709 INFO L87 Difference]: Start difference. First operand 120 states and 124 transitions. Second operand 52 states. [2020-10-27 14:06:55,322 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 14:06:55,323 INFO L93 Difference]: Finished difference Result 237 states and 248 transitions. [2020-10-27 14:06:55,324 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 52 states. [2020-10-27 14:06:55,324 INFO L78 Accepts]: Start accepts. Automaton has 52 states. Word has length 244 [2020-10-27 14:06:55,324 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 14:06:55,328 INFO L225 Difference]: With dead ends: 237 [2020-10-27 14:06:55,329 INFO L226 Difference]: Without dead ends: 126 [2020-10-27 14:06:55,330 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 119 GetRequests, 39 SyntacticMatches, 0 SemanticMatches, 80 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 993 ImplicationChecksByTransitivity, 3.4s TimeCoverageRelationStatistics Valid=1697, Invalid=4945, Unknown=0, NotChecked=0, Total=6642 [2020-10-27 14:06:55,331 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 126 states. [2020-10-27 14:06:55,336 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 126 to 124. [2020-10-27 14:06:55,337 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 124 states. [2020-10-27 14:06:55,338 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 124 states to 124 states and 128 transitions. [2020-10-27 14:06:55,338 INFO L78 Accepts]: Start accepts. Automaton has 124 states and 128 transitions. Word has length 244 [2020-10-27 14:06:55,338 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 14:06:55,338 INFO L481 AbstractCegarLoop]: Abstraction has 124 states and 128 transitions. [2020-10-27 14:06:55,338 INFO L482 AbstractCegarLoop]: Interpolant automaton has 52 states. [2020-10-27 14:06:55,339 INFO L276 IsEmpty]: Start isEmpty. Operand 124 states and 128 transitions. [2020-10-27 14:06:55,340 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 253 [2020-10-27 14:06:55,340 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 14:06:55,340 INFO L422 BasicCegarLoop]: trace histogram [90, 90, 19, 19, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 14:06:55,340 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2020-10-27 14:06:55,341 INFO L429 AbstractCegarLoop]: === Iteration 32 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 14:06:55,341 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 14:06:55,341 INFO L82 PathProgramCache]: Analyzing trace with hash -1225363281, now seen corresponding path program 19 times [2020-10-27 14:06:55,341 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 14:06:55,341 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [720947563] [2020-10-27 14:06:55,342 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 14:06:55,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:06:55,355 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:06:55,378 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:06:55,435 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:06:55,504 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:07:00,357 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:07:00,358 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 266 [2020-10-27 14:07:00,358 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-27 14:07:00,358 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5004 [2020-10-27 14:07:00,358 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:07:00,358 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 21 [2020-10-27 14:07:00,358 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 150 [2020-10-27 14:07:00,358 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 40 [2020-10-27 14:07:00,358 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:07:00,723 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 14:07:00,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:07:00,726 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:07:00,730 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:07:00,730 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 14:07:00,730 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:07:00,730 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-27 14:07:00,730 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:07:00,730 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:07:00,730 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:07:00,731 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:07:00,731 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:07:00,732 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-27 14:07:00,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:07:00,734 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:07:00,744 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:07:00,888 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:07:00,888 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 70 [2020-10-27 14:07:00,888 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 14:07:00,888 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 154 [2020-10-27 14:07:00,888 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:07:00,889 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 32 [2020-10-27 14:07:00,889 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 14:07:00,889 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 62 [2020-10-27 14:07:00,889 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:07:02,126 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2020-10-27 14:07:02,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:07:02,130 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:07:02,138 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:07:02,283 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:07:02,284 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 70 [2020-10-27 14:07:02,284 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 14:07:02,284 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 154 [2020-10-27 14:07:02,284 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:07:02,284 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 32 [2020-10-27 14:07:02,284 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 14:07:02,284 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 62 [2020-10-27 14:07:02,284 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:07:02,294 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 181 [2020-10-27 14:07:02,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:07:02,300 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:07:02,308 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:07:02,458 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:07:02,458 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 70 [2020-10-27 14:07:02,459 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 14:07:02,459 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 160 [2020-10-27 14:07:02,459 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:07:02,459 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:07:02,459 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 67 [2020-10-27 14:07:02,459 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:07:02,459 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:07:02,503 INFO L134 CoverageAnalysis]: Checked inductivity of 8656 backedges. 900 proven. 6789 refuted. 0 times theorem prover too weak. 967 trivial. 0 not checked. [2020-10-27 14:07:02,503 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [720947563] [2020-10-27 14:07:02,503 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 14:07:02,503 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [54] total 54 [2020-10-27 14:07:02,503 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [4054646] [2020-10-27 14:07:02,504 INFO L461 AbstractCegarLoop]: Interpolant automaton has 54 states [2020-10-27 14:07:02,504 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 14:07:02,504 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 54 interpolants. [2020-10-27 14:07:02,505 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=760, Invalid=2102, Unknown=0, NotChecked=0, Total=2862 [2020-10-27 14:07:02,505 INFO L87 Difference]: Start difference. First operand 124 states and 128 transitions. Second operand 54 states. [2020-10-27 14:07:05,281 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 14:07:05,281 INFO L93 Difference]: Finished difference Result 245 states and 256 transitions. [2020-10-27 14:07:05,282 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 54 states. [2020-10-27 14:07:05,282 INFO L78 Accepts]: Start accepts. Automaton has 54 states. Word has length 252 [2020-10-27 14:07:05,283 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 14:07:05,284 INFO L225 Difference]: With dead ends: 245 [2020-10-27 14:07:05,284 INFO L226 Difference]: Without dead ends: 130 [2020-10-27 14:07:05,287 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 123 GetRequests, 40 SyntacticMatches, 0 SemanticMatches, 83 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1073 ImplicationChecksByTransitivity, 3.6s TimeCoverageRelationStatistics Valid=1814, Invalid=5326, Unknown=0, NotChecked=0, Total=7140 [2020-10-27 14:07:05,287 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 130 states. [2020-10-27 14:07:05,292 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 130 to 128. [2020-10-27 14:07:05,293 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 128 states. [2020-10-27 14:07:05,294 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 128 states to 128 states and 132 transitions. [2020-10-27 14:07:05,294 INFO L78 Accepts]: Start accepts. Automaton has 128 states and 132 transitions. Word has length 252 [2020-10-27 14:07:05,294 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 14:07:05,294 INFO L481 AbstractCegarLoop]: Abstraction has 128 states and 132 transitions. [2020-10-27 14:07:05,294 INFO L482 AbstractCegarLoop]: Interpolant automaton has 54 states. [2020-10-27 14:07:05,294 INFO L276 IsEmpty]: Start isEmpty. Operand 128 states and 132 transitions. [2020-10-27 14:07:05,296 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 261 [2020-10-27 14:07:05,296 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 14:07:05,296 INFO L422 BasicCegarLoop]: trace histogram [93, 93, 20, 20, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 14:07:05,296 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2020-10-27 14:07:05,296 INFO L429 AbstractCegarLoop]: === Iteration 33 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 14:07:05,297 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 14:07:05,297 INFO L82 PathProgramCache]: Analyzing trace with hash 2105515563, now seen corresponding path program 20 times [2020-10-27 14:07:05,297 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 14:07:05,297 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1153347527] [2020-10-27 14:07:05,297 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 14:07:05,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:07:05,311 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:07:05,332 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:07:05,390 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:07:05,447 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:07:10,314 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:07:10,315 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 274 [2020-10-27 14:07:10,315 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-27 14:07:10,315 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5005 [2020-10-27 14:07:10,315 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:07:10,315 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 22 [2020-10-27 14:07:10,315 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 154 [2020-10-27 14:07:10,315 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 42 [2020-10-27 14:07:10,315 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:07:10,732 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 14:07:10,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:07:10,735 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:07:10,737 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:07:10,737 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 14:07:10,737 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:07:10,737 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 14:07:10,737 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:07:10,737 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:07:10,737 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:07:10,738 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:07:10,738 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:07:10,739 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-27 14:07:10,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:07:10,740 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:07:10,747 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:07:10,893 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:07:10,893 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 72 [2020-10-27 14:07:10,893 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 14:07:10,893 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 152 [2020-10-27 14:07:10,893 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:07:10,894 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 33 [2020-10-27 14:07:10,894 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 14:07:10,894 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 64 [2020-10-27 14:07:10,894 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0