/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SequenceOfStatements --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=WIDESTAMONGSMALL --traceabstraction.additional.smt.options tolerance=0.6 --traceabstraction.additional.smt.options log-additional-information=true --traceabstraction.additional.smt.options unknown-allowed=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf language data_model -i ../../../trunk/examples/svcomp/array-examples/standard_init9_ground-1.i -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-28 09:02:36,549 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-28 09:02:36,553 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-28 09:02:36,610 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-28 09:02:36,610 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-28 09:02:36,618 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-28 09:02:36,621 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-28 09:02:36,626 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-28 09:02:36,629 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-28 09:02:36,637 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-28 09:02:36,638 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-28 09:02:36,640 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-28 09:02:36,640 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-28 09:02:36,641 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-28 09:02:36,642 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-28 09:02:36,648 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-28 09:02:36,649 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-28 09:02:36,653 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-28 09:02:36,676 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-28 09:02:36,678 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-28 09:02:36,680 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-28 09:02:36,681 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-28 09:02:36,682 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-28 09:02:36,683 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-28 09:02:36,686 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-28 09:02:36,687 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-28 09:02:36,687 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-28 09:02:36,688 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-28 09:02:36,689 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-28 09:02:36,690 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-28 09:02:36,690 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-28 09:02:36,691 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-28 09:02:36,692 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-28 09:02:36,693 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-28 09:02:36,694 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-28 09:02:36,694 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-28 09:02:36,695 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-28 09:02:36,695 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-28 09:02:36,695 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-28 09:02:36,696 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-28 09:02:36,697 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-28 09:02:36,698 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-28 09:02:36,724 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-28 09:02:36,724 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-28 09:02:36,726 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-28 09:02:36,726 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-28 09:02:36,726 INFO L138 SettingsManager]: * Use SBE=true [2020-10-28 09:02:36,727 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-28 09:02:36,727 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-28 09:02:36,727 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-28 09:02:36,727 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-28 09:02:36,728 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-28 09:02:36,728 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-28 09:02:36,728 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-28 09:02:36,728 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-28 09:02:36,729 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-28 09:02:36,729 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-28 09:02:36,729 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-28 09:02:36,729 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-28 09:02:36,730 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-28 09:02:36,730 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-28 09:02:36,730 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-28 09:02:36,730 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-28 09:02:36,730 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-28 09:02:36,731 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-28 09:02:36,731 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-28 09:02:36,731 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-28 09:02:36,731 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-28 09:02:36,732 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-28 09:02:36,732 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-28 09:02:36,732 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-28 09:02:36,732 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.6;log-additional-information=true;unknown-allowed=true; [2020-10-28 09:02:37,094 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-28 09:02:37,129 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-28 09:02:37,134 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-28 09:02:37,136 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-28 09:02:37,136 INFO L275 PluginConnector]: CDTParser initialized [2020-10-28 09:02:37,138 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/array-examples/standard_init9_ground-1.i [2020-10-28 09:02:37,239 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/7940e71b1/81048619064f45f9b62f3fd165dec5ae/FLAG8cdd5d7de [2020-10-28 09:02:37,963 INFO L306 CDTParser]: Found 1 translation units. [2020-10-28 09:02:37,964 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/array-examples/standard_init9_ground-1.i [2020-10-28 09:02:37,973 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/7940e71b1/81048619064f45f9b62f3fd165dec5ae/FLAG8cdd5d7de [2020-10-28 09:02:38,290 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/7940e71b1/81048619064f45f9b62f3fd165dec5ae [2020-10-28 09:02:38,293 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-28 09:02:38,300 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-28 09:02:38,302 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-28 09:02:38,302 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-28 09:02:38,306 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-28 09:02:38,307 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 09:02:38" (1/1) ... [2020-10-28 09:02:38,311 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3395589a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:02:38, skipping insertion in model container [2020-10-28 09:02:38,311 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 09:02:38" (1/1) ... [2020-10-28 09:02:38,319 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-28 09:02:38,337 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-28 09:02:38,509 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-28 09:02:38,518 INFO L203 MainTranslator]: Completed pre-run [2020-10-28 09:02:38,544 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-28 09:02:38,563 INFO L208 MainTranslator]: Completed translation [2020-10-28 09:02:38,563 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:02:38 WrapperNode [2020-10-28 09:02:38,563 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-28 09:02:38,565 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-28 09:02:38,565 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-28 09:02:38,565 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-28 09:02:38,579 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:02:38" (1/1) ... [2020-10-28 09:02:38,579 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:02:38" (1/1) ... [2020-10-28 09:02:38,587 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:02:38" (1/1) ... [2020-10-28 09:02:38,588 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:02:38" (1/1) ... [2020-10-28 09:02:38,597 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:02:38" (1/1) ... [2020-10-28 09:02:38,605 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:02:38" (1/1) ... [2020-10-28 09:02:38,607 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:02:38" (1/1) ... [2020-10-28 09:02:38,610 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-28 09:02:38,611 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-28 09:02:38,611 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-28 09:02:38,611 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-28 09:02:38,612 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:02:38" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-28 09:02:38,687 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-28 09:02:38,688 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-28 09:02:38,688 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-28 09:02:38,688 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-10-28 09:02:38,688 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-28 09:02:38,688 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-28 09:02:38,689 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-28 09:02:38,689 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_perror_fail [2020-10-28 09:02:38,689 INFO L130 BoogieDeclarations]: Found specification of procedure __assert [2020-10-28 09:02:38,689 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-28 09:02:38,689 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-28 09:02:38,690 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-10-28 09:02:38,690 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-28 09:02:38,690 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-28 09:02:38,690 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-28 09:02:38,690 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-28 09:02:38,690 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-28 09:02:38,691 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-28 09:02:38,691 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-28 09:02:39,373 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-28 09:02:39,374 INFO L298 CfgBuilder]: Removed 10 assume(true) statements. [2020-10-28 09:02:39,376 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 09:02:39 BoogieIcfgContainer [2020-10-28 09:02:39,376 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-28 09:02:39,380 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-28 09:02:39,381 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-28 09:02:39,384 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-28 09:02:39,385 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.10 09:02:38" (1/3) ... [2020-10-28 09:02:39,386 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3c2b2b68 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 09:02:39, skipping insertion in model container [2020-10-28 09:02:39,387 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:02:38" (2/3) ... [2020-10-28 09:02:39,387 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3c2b2b68 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 09:02:39, skipping insertion in model container [2020-10-28 09:02:39,388 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 09:02:39" (3/3) ... [2020-10-28 09:02:39,390 INFO L111 eAbstractionObserver]: Analyzing ICFG standard_init9_ground-1.i [2020-10-28 09:02:39,403 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-28 09:02:39,408 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-28 09:02:39,424 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-28 09:02:39,469 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-28 09:02:39,469 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-28 09:02:39,469 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-28 09:02:39,470 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-28 09:02:39,470 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-28 09:02:39,470 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-28 09:02:39,470 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-28 09:02:39,470 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-28 09:02:39,493 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states. [2020-10-28 09:02:39,503 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2020-10-28 09:02:39,503 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 09:02:39,504 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 09:02:39,505 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 09:02:39,515 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 09:02:39,516 INFO L82 PathProgramCache]: Analyzing trace with hash -1430342186, now seen corresponding path program 1 times [2020-10-28 09:02:39,526 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 09:02:39,528 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1147752982] [2020-10-28 09:02:39,528 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 09:02:39,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:02:39,750 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:02:39,782 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:02:39,837 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:02:39,872 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:02:39,899 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:02:39,931 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:02:39,966 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:02:40,076 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:02:40,322 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:02:43,710 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:02:43,711 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 41 [2020-10-28 09:02:43,711 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-10-28 09:02:43,711 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3994 [2020-10-28 09:02:43,714 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:02:43,714 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:02:43,715 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:02:43,716 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 24 [2020-10-28 09:02:43,716 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:02:43,717 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 5 [2020-10-28 09:02:43,838 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 09:02:43,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:02:43,853 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:02:43,860 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:02:43,860 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 09:02:43,861 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:02:43,861 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-28 09:02:43,861 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:02:43,861 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:02:43,862 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:02:43,862 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:02:43,862 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:02:43,862 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 09:02:43,879 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 09:02:43,880 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1147752982] [2020-10-28 09:02:43,882 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 09:02:43,882 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-28 09:02:43,884 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [933905271] [2020-10-28 09:02:43,889 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-28 09:02:43,891 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 09:02:43,913 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-28 09:02:43,914 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-28 09:02:43,917 INFO L87 Difference]: Start difference. First operand 44 states. Second operand 3 states. [2020-10-28 09:02:44,104 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 09:02:44,107 INFO L93 Difference]: Finished difference Result 78 states and 120 transitions. [2020-10-28 09:02:44,108 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-28 09:02:44,112 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 31 [2020-10-28 09:02:44,113 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 09:02:44,124 INFO L225 Difference]: With dead ends: 78 [2020-10-28 09:02:44,124 INFO L226 Difference]: Without dead ends: 36 [2020-10-28 09:02:44,130 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-28 09:02:44,150 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2020-10-28 09:02:44,180 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 36. [2020-10-28 09:02:44,181 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2020-10-28 09:02:44,183 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 45 transitions. [2020-10-28 09:02:44,185 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 45 transitions. Word has length 31 [2020-10-28 09:02:44,185 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 09:02:44,186 INFO L481 AbstractCegarLoop]: Abstraction has 36 states and 45 transitions. [2020-10-28 09:02:44,186 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-28 09:02:44,186 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 45 transitions. [2020-10-28 09:02:44,188 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2020-10-28 09:02:44,188 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 09:02:44,190 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 09:02:44,192 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-28 09:02:44,192 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 09:02:44,194 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 09:02:44,195 INFO L82 PathProgramCache]: Analyzing trace with hash -940820786, now seen corresponding path program 1 times [2020-10-28 09:02:44,195 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 09:02:44,195 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [361908588] [2020-10-28 09:02:44,196 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 09:02:44,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:02:44,222 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:02:44,237 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:02:44,258 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:02:44,270 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:02:44,280 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:02:44,287 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:02:44,297 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:02:44,343 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:02:44,430 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:02:49,227 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:02:49,228 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 41 [2020-10-28 09:02:49,228 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-10-28 09:02:49,228 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5011 [2020-10-28 09:02:49,229 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:02:49,229 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:02:49,229 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 09:02:49,229 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-28 09:02:49,230 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-28 09:02:49,230 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 09:02:49,287 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 09:02:49,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:02:49,298 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:02:49,304 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:02:49,304 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 09:02:49,304 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:02:49,305 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-28 09:02:49,305 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:02:49,306 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:02:49,306 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:02:49,306 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:02:49,306 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:02:49,307 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 09:02:49,313 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 09:02:49,314 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [361908588] [2020-10-28 09:02:49,314 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 09:02:49,315 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-28 09:02:49,315 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [844801523] [2020-10-28 09:02:49,317 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-28 09:02:49,318 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 09:02:49,328 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-28 09:02:49,328 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-28 09:02:49,329 INFO L87 Difference]: Start difference. First operand 36 states and 45 transitions. Second operand 4 states. [2020-10-28 09:02:49,537 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 09:02:49,538 INFO L93 Difference]: Finished difference Result 74 states and 100 transitions. [2020-10-28 09:02:49,538 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-28 09:02:49,538 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 31 [2020-10-28 09:02:49,539 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 09:02:49,540 INFO L225 Difference]: With dead ends: 74 [2020-10-28 09:02:49,541 INFO L226 Difference]: Without dead ends: 45 [2020-10-28 09:02:49,542 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-28 09:02:49,544 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45 states. [2020-10-28 09:02:49,564 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45 to 45. [2020-10-28 09:02:49,564 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 45 states. [2020-10-28 09:02:49,567 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 54 transitions. [2020-10-28 09:02:49,567 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 54 transitions. Word has length 31 [2020-10-28 09:02:49,568 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 09:02:49,569 INFO L481 AbstractCegarLoop]: Abstraction has 45 states and 54 transitions. [2020-10-28 09:02:49,569 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-28 09:02:49,569 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 54 transitions. [2020-10-28 09:02:49,571 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2020-10-28 09:02:49,572 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 09:02:49,572 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 09:02:49,572 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-28 09:02:49,572 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 09:02:49,573 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 09:02:49,574 INFO L82 PathProgramCache]: Analyzing trace with hash -2143673916, now seen corresponding path program 1 times [2020-10-28 09:02:49,574 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 09:02:49,574 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1974904645] [2020-10-28 09:02:49,575 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 09:02:49,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:02:49,599 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:02:49,624 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:02:49,651 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:02:49,687 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:02:49,703 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:02:49,720 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:02:49,788 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:02:50,090 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:02:52,087 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:02:54,596 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:02:54,596 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 50 [2020-10-28 09:02:54,597 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-10-28 09:02:54,597 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-10-28 09:02:54,597 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:02:54,597 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:02:54,598 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-28 09:02:54,598 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 20 [2020-10-28 09:02:54,598 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 3 [2020-10-28 09:02:54,598 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 09:02:54,655 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 09:02:54,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:02:54,661 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:02:54,670 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:02:54,670 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 09:02:54,671 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:02:54,671 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-28 09:02:54,671 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:02:54,671 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:02:54,671 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:02:54,672 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:02:54,672 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:02:54,672 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 09:02:54,682 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-10-28 09:02:54,686 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1974904645] [2020-10-28 09:02:54,687 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 09:02:54,687 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-28 09:02:54,687 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [258032485] [2020-10-28 09:02:54,688 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-28 09:02:54,688 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 09:02:54,693 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-28 09:02:54,693 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-28 09:02:54,693 INFO L87 Difference]: Start difference. First operand 45 states and 54 transitions. Second operand 5 states. [2020-10-28 09:02:54,897 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 09:02:54,897 INFO L93 Difference]: Finished difference Result 91 states and 117 transitions. [2020-10-28 09:02:54,898 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-28 09:02:54,898 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 40 [2020-10-28 09:02:54,898 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 09:02:54,899 INFO L225 Difference]: With dead ends: 91 [2020-10-28 09:02:54,900 INFO L226 Difference]: Without dead ends: 54 [2020-10-28 09:02:54,901 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-28 09:02:54,901 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54 states. [2020-10-28 09:02:54,909 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54 to 54. [2020-10-28 09:02:54,910 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 54 states. [2020-10-28 09:02:54,915 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 63 transitions. [2020-10-28 09:02:54,915 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 63 transitions. Word has length 40 [2020-10-28 09:02:54,916 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 09:02:54,916 INFO L481 AbstractCegarLoop]: Abstraction has 54 states and 63 transitions. [2020-10-28 09:02:54,916 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-28 09:02:54,916 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 63 transitions. [2020-10-28 09:02:54,918 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2020-10-28 09:02:54,918 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 09:02:54,918 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 09:02:54,919 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-28 09:02:54,919 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 09:02:54,919 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 09:02:54,919 INFO L82 PathProgramCache]: Analyzing trace with hash -1385563250, now seen corresponding path program 2 times [2020-10-28 09:02:54,920 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 09:02:54,920 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [592212101] [2020-10-28 09:02:54,920 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 09:02:54,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:02:54,955 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:02:54,977 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:02:55,013 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:02:55,032 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:02:55,049 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:02:55,065 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:02:55,232 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:02:57,401 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:02:59,950 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:02:59,950 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 59 [2020-10-28 09:02:59,951 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-10-28 09:02:59,951 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5004 [2020-10-28 09:02:59,951 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:02:59,951 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:02:59,952 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 09:02:59,952 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 39 [2020-10-28 09:02:59,952 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-10-28 09:02:59,952 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 09:03:00,017 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 09:03:00,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:03:00,024 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:03:00,026 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:03:00,027 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 09:03:00,027 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:03:00,027 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 09:03:00,027 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:03:00,027 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:03:00,028 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:03:00,028 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:03:00,028 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:03:00,028 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 09:03:00,039 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2020-10-28 09:03:00,040 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [592212101] [2020-10-28 09:03:00,040 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 09:03:00,040 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-28 09:03:00,041 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [666317028] [2020-10-28 09:03:00,042 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-28 09:03:00,043 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 09:03:00,043 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-28 09:03:00,044 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-10-28 09:03:00,044 INFO L87 Difference]: Start difference. First operand 54 states and 63 transitions. Second operand 6 states. [2020-10-28 09:03:00,320 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 09:03:00,320 INFO L93 Difference]: Finished difference Result 108 states and 134 transitions. [2020-10-28 09:03:00,321 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-28 09:03:00,321 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 49 [2020-10-28 09:03:00,322 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 09:03:00,322 INFO L225 Difference]: With dead ends: 108 [2020-10-28 09:03:00,323 INFO L226 Difference]: Without dead ends: 63 [2020-10-28 09:03:00,324 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-10-28 09:03:00,325 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63 states. [2020-10-28 09:03:00,332 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63 to 63. [2020-10-28 09:03:00,333 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 63 states. [2020-10-28 09:03:00,334 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63 states to 63 states and 72 transitions. [2020-10-28 09:03:00,334 INFO L78 Accepts]: Start accepts. Automaton has 63 states and 72 transitions. Word has length 49 [2020-10-28 09:03:00,335 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 09:03:00,335 INFO L481 AbstractCegarLoop]: Abstraction has 63 states and 72 transitions. [2020-10-28 09:03:00,335 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-28 09:03:00,335 INFO L276 IsEmpty]: Start isEmpty. Operand 63 states and 72 transitions. [2020-10-28 09:03:00,337 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2020-10-28 09:03:00,337 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 09:03:00,337 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 09:03:00,338 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-28 09:03:00,338 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 09:03:00,338 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 09:03:00,338 INFO L82 PathProgramCache]: Analyzing trace with hash -1838870524, now seen corresponding path program 3 times [2020-10-28 09:03:00,339 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 09:03:00,339 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2060000686] [2020-10-28 09:03:00,339 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 09:03:00,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:03:00,376 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:03:00,410 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:03:00,439 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:03:00,465 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:03:00,489 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:03:00,514 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:03:00,837 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:03:05,369 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:03:05,370 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 68 [2020-10-28 09:03:05,370 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-28 09:03:05,370 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5006 [2020-10-28 09:03:05,371 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:03:05,371 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:03:05,371 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-28 09:03:05,371 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-10-28 09:03:05,371 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-28 09:03:05,372 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 09:03:05,450 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 09:03:05,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:03:05,453 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:03:05,456 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:03:05,457 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 09:03:05,457 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:03:05,457 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-28 09:03:05,458 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:03:05,458 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:03:05,458 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:03:05,458 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:03:05,459 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:03:05,459 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 09:03:05,467 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 48 trivial. 0 not checked. [2020-10-28 09:03:05,467 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2060000686] [2020-10-28 09:03:05,467 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 09:03:05,468 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-28 09:03:05,468 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1168892690] [2020-10-28 09:03:05,469 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 09:03:05,469 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 09:03:05,470 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 09:03:05,470 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-10-28 09:03:05,471 INFO L87 Difference]: Start difference. First operand 63 states and 72 transitions. Second operand 7 states. [2020-10-28 09:03:05,689 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 09:03:05,690 INFO L93 Difference]: Finished difference Result 125 states and 151 transitions. [2020-10-28 09:03:05,690 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-28 09:03:05,690 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 58 [2020-10-28 09:03:05,690 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 09:03:05,692 INFO L225 Difference]: With dead ends: 125 [2020-10-28 09:03:05,692 INFO L226 Difference]: Without dead ends: 72 [2020-10-28 09:03:05,694 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-10-28 09:03:05,694 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 72 states. [2020-10-28 09:03:05,709 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 72 to 72. [2020-10-28 09:03:05,710 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 72 states. [2020-10-28 09:03:05,713 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 72 states to 72 states and 81 transitions. [2020-10-28 09:03:05,715 INFO L78 Accepts]: Start accepts. Automaton has 72 states and 81 transitions. Word has length 58 [2020-10-28 09:03:05,715 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 09:03:05,716 INFO L481 AbstractCegarLoop]: Abstraction has 72 states and 81 transitions. [2020-10-28 09:03:05,716 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 09:03:05,716 INFO L276 IsEmpty]: Start isEmpty. Operand 72 states and 81 transitions. [2020-10-28 09:03:05,719 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2020-10-28 09:03:05,719 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 09:03:05,719 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 09:03:05,720 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-28 09:03:05,720 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 09:03:05,723 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 09:03:05,724 INFO L82 PathProgramCache]: Analyzing trace with hash -632270770, now seen corresponding path program 4 times [2020-10-28 09:03:05,724 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 09:03:05,724 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [530260462] [2020-10-28 09:03:05,724 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 09:03:05,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:03:05,766 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:03:05,800 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:03:05,828 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:03:05,853 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:03:05,876 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:03:05,897 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:03:06,306 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:03:10,757 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:03:10,757 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 77 [2020-10-28 09:03:10,757 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-28 09:03:10,758 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5003 [2020-10-28 09:03:10,758 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:03:10,758 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:03:10,758 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 09:03:10,758 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 29 [2020-10-28 09:03:10,759 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 09:03:10,759 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 09:03:10,839 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 09:03:10,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:03:10,842 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:03:10,844 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:03:10,844 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 09:03:10,845 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:03:10,845 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 09:03:10,845 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:03:10,845 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:03:10,845 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:03:10,845 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:03:10,846 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:03:10,846 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:03:10,852 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 80 trivial. 0 not checked. [2020-10-28 09:03:10,853 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [530260462] [2020-10-28 09:03:10,853 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 09:03:10,853 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-28 09:03:10,853 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [14863925] [2020-10-28 09:03:10,854 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-28 09:03:10,854 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 09:03:10,855 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-28 09:03:10,855 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-10-28 09:03:10,855 INFO L87 Difference]: Start difference. First operand 72 states and 81 transitions. Second operand 8 states. [2020-10-28 09:03:11,059 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 09:03:11,059 INFO L93 Difference]: Finished difference Result 142 states and 168 transitions. [2020-10-28 09:03:11,060 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-28 09:03:11,060 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 67 [2020-10-28 09:03:11,060 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 09:03:11,061 INFO L225 Difference]: With dead ends: 142 [2020-10-28 09:03:11,061 INFO L226 Difference]: Without dead ends: 81 [2020-10-28 09:03:11,062 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-10-28 09:03:11,063 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 81 states. [2020-10-28 09:03:11,070 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 81 to 81. [2020-10-28 09:03:11,071 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 81 states. [2020-10-28 09:03:11,072 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 81 states to 81 states and 90 transitions. [2020-10-28 09:03:11,072 INFO L78 Accepts]: Start accepts. Automaton has 81 states and 90 transitions. Word has length 67 [2020-10-28 09:03:11,072 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 09:03:11,072 INFO L481 AbstractCegarLoop]: Abstraction has 81 states and 90 transitions. [2020-10-28 09:03:11,073 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-28 09:03:11,073 INFO L276 IsEmpty]: Start isEmpty. Operand 81 states and 90 transitions. [2020-10-28 09:03:11,074 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2020-10-28 09:03:11,074 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 09:03:11,074 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 09:03:11,074 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-28 09:03:11,075 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 09:03:11,075 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 09:03:11,075 INFO L82 PathProgramCache]: Analyzing trace with hash -1934823868, now seen corresponding path program 5 times [2020-10-28 09:03:11,076 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 09:03:11,076 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [397727821] [2020-10-28 09:03:11,076 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 09:03:11,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:03:11,114 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:03:11,150 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:03:11,180 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:03:11,209 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:03:11,237 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:03:11,261 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:03:14,855 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:03:16,110 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:03:16,110 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 86 [2020-10-28 09:03:16,110 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-28 09:03:16,110 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5009 [2020-10-28 09:03:16,110 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:03:16,110 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:03:16,111 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-28 09:03:16,111 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 46 [2020-10-28 09:03:16,111 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-28 09:03:16,111 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:03:16,203 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 09:03:16,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:03:16,206 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:03:16,208 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:03:16,208 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 09:03:16,209 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:03:16,209 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 09:03:16,209 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:03:16,209 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:03:16,209 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:03:16,210 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:03:16,210 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:03:16,210 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:03:16,219 INFO L134 CoverageAnalysis]: Checked inductivity of 135 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 120 trivial. 0 not checked. [2020-10-28 09:03:16,219 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [397727821] [2020-10-28 09:03:16,220 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 09:03:16,220 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-10-28 09:03:16,220 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1364419444] [2020-10-28 09:03:16,221 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-28 09:03:16,221 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 09:03:16,221 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-28 09:03:16,222 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2020-10-28 09:03:16,222 INFO L87 Difference]: Start difference. First operand 81 states and 90 transitions. Second operand 9 states. [2020-10-28 09:03:16,499 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 09:03:16,500 INFO L93 Difference]: Finished difference Result 159 states and 185 transitions. [2020-10-28 09:03:16,501 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-28 09:03:16,501 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 76 [2020-10-28 09:03:16,501 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 09:03:16,502 INFO L225 Difference]: With dead ends: 159 [2020-10-28 09:03:16,502 INFO L226 Difference]: Without dead ends: 90 [2020-10-28 09:03:16,503 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2020-10-28 09:03:16,504 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 90 states. [2020-10-28 09:03:16,512 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 90 to 90. [2020-10-28 09:03:16,512 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 90 states. [2020-10-28 09:03:16,514 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 90 states to 90 states and 99 transitions. [2020-10-28 09:03:16,514 INFO L78 Accepts]: Start accepts. Automaton has 90 states and 99 transitions. Word has length 76 [2020-10-28 09:03:16,514 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 09:03:16,514 INFO L481 AbstractCegarLoop]: Abstraction has 90 states and 99 transitions. [2020-10-28 09:03:16,514 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-28 09:03:16,515 INFO L276 IsEmpty]: Start isEmpty. Operand 90 states and 99 transitions. [2020-10-28 09:03:16,516 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2020-10-28 09:03:16,516 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 09:03:16,516 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 09:03:16,516 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-28 09:03:16,516 INFO L429 AbstractCegarLoop]: === Iteration 8 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 09:03:16,517 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 09:03:16,517 INFO L82 PathProgramCache]: Analyzing trace with hash 1825781006, now seen corresponding path program 6 times [2020-10-28 09:03:16,517 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 09:03:16,517 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [393703015] [2020-10-28 09:03:16,518 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 09:03:16,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:03:16,593 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:03:16,632 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:03:16,669 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:03:16,692 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:03:16,714 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:03:16,735 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:03:21,581 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:03:21,581 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 95 [2020-10-28 09:03:21,581 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-28 09:03:21,581 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5003 [2020-10-28 09:03:21,582 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:03:21,582 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:03:21,582 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-28 09:03:21,582 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 43 [2020-10-28 09:03:21,582 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-28 09:03:21,582 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:03:21,700 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 09:03:21,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:03:21,703 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:03:21,706 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:03:21,706 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 09:03:21,707 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:03:21,707 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 09:03:21,707 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:03:21,707 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:03:21,707 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:03:21,708 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:03:21,708 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:03:21,708 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 09:03:21,742 INFO L134 CoverageAnalysis]: Checked inductivity of 189 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 168 trivial. 0 not checked. [2020-10-28 09:03:21,743 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [393703015] [2020-10-28 09:03:21,743 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 09:03:21,745 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-10-28 09:03:21,745 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1251625083] [2020-10-28 09:03:21,747 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-28 09:03:21,747 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 09:03:21,750 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-28 09:03:21,750 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2020-10-28 09:03:21,750 INFO L87 Difference]: Start difference. First operand 90 states and 99 transitions. Second operand 10 states. [2020-10-28 09:03:22,048 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 09:03:22,048 INFO L93 Difference]: Finished difference Result 176 states and 202 transitions. [2020-10-28 09:03:22,048 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-28 09:03:22,049 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 85 [2020-10-28 09:03:22,049 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 09:03:22,050 INFO L225 Difference]: With dead ends: 176 [2020-10-28 09:03:22,050 INFO L226 Difference]: Without dead ends: 99 [2020-10-28 09:03:22,051 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2020-10-28 09:03:22,051 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 99 states. [2020-10-28 09:03:22,060 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 99 to 99. [2020-10-28 09:03:22,060 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 99 states. [2020-10-28 09:03:22,061 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 99 states to 99 states and 108 transitions. [2020-10-28 09:03:22,061 INFO L78 Accepts]: Start accepts. Automaton has 99 states and 108 transitions. Word has length 85 [2020-10-28 09:03:22,062 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 09:03:22,062 INFO L481 AbstractCegarLoop]: Abstraction has 99 states and 108 transitions. [2020-10-28 09:03:22,062 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-28 09:03:22,062 INFO L276 IsEmpty]: Start isEmpty. Operand 99 states and 108 transitions. [2020-10-28 09:03:22,064 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2020-10-28 09:03:22,064 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 09:03:22,064 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 09:03:22,065 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-28 09:03:22,065 INFO L429 AbstractCegarLoop]: === Iteration 9 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 09:03:22,065 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 09:03:22,065 INFO L82 PathProgramCache]: Analyzing trace with hash -773997436, now seen corresponding path program 7 times [2020-10-28 09:03:22,065 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 09:03:22,066 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1022122698] [2020-10-28 09:03:22,066 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 09:03:22,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:03:22,110 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:03:22,155 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:03:22,191 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:03:22,218 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:03:22,242 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:03:22,358 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:03:27,101 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:03:27,101 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 104 [2020-10-28 09:03:27,101 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-28 09:03:27,101 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5007 [2020-10-28 09:03:27,101 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:03:27,101 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:03:27,102 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-28 09:03:27,102 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 56 [2020-10-28 09:03:27,102 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-10-28 09:03:27,102 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:03:27,226 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 09:03:27,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:03:27,230 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:03:27,234 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:03:27,234 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 09:03:27,234 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:03:27,235 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-28 09:03:27,235 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:03:27,235 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:03:27,235 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:03:27,236 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:03:27,236 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:03:27,236 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 09:03:27,256 INFO L134 CoverageAnalysis]: Checked inductivity of 252 backedges. 0 proven. 28 refuted. 0 times theorem prover too weak. 224 trivial. 0 not checked. [2020-10-28 09:03:27,257 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1022122698] [2020-10-28 09:03:27,257 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 09:03:27,257 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-10-28 09:03:27,259 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1627991593] [2020-10-28 09:03:27,259 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-28 09:03:27,265 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 09:03:27,266 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-28 09:03:27,267 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-10-28 09:03:27,268 INFO L87 Difference]: Start difference. First operand 99 states and 108 transitions. Second operand 11 states. [2020-10-28 09:03:27,673 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 09:03:27,673 INFO L93 Difference]: Finished difference Result 193 states and 219 transitions. [2020-10-28 09:03:27,673 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-28 09:03:27,674 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 94 [2020-10-28 09:03:27,674 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 09:03:27,675 INFO L225 Difference]: With dead ends: 193 [2020-10-28 09:03:27,675 INFO L226 Difference]: Without dead ends: 108 [2020-10-28 09:03:27,675 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-10-28 09:03:27,676 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 108 states. [2020-10-28 09:03:27,693 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 108 to 108. [2020-10-28 09:03:27,693 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 108 states. [2020-10-28 09:03:27,694 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 108 states to 108 states and 117 transitions. [2020-10-28 09:03:27,694 INFO L78 Accepts]: Start accepts. Automaton has 108 states and 117 transitions. Word has length 94 [2020-10-28 09:03:27,695 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 09:03:27,695 INFO L481 AbstractCegarLoop]: Abstraction has 108 states and 117 transitions. [2020-10-28 09:03:27,695 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-28 09:03:27,695 INFO L276 IsEmpty]: Start isEmpty. Operand 108 states and 117 transitions. [2020-10-28 09:03:27,698 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2020-10-28 09:03:27,698 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 09:03:27,699 INFO L422 BasicCegarLoop]: trace histogram [8, 8, 8, 8, 8, 8, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 09:03:27,704 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-28 09:03:27,704 INFO L429 AbstractCegarLoop]: === Iteration 10 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 09:03:27,705 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 09:03:27,705 INFO L82 PathProgramCache]: Analyzing trace with hash 1478928846, now seen corresponding path program 8 times [2020-10-28 09:03:27,705 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 09:03:27,705 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [758891813] [2020-10-28 09:03:27,706 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 09:03:27,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:03:27,768 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:03:27,826 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:03:27,879 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:03:27,929 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:03:27,976 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:03:28,184 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:03:32,753 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:03:32,753 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 113 [2020-10-28 09:03:32,754 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-28 09:03:32,754 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5008 [2020-10-28 09:03:32,754 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:03:32,754 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:03:32,754 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-28 09:03:32,754 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 51 [2020-10-28 09:03:32,755 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-28 09:03:32,755 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:03:32,905 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 09:03:32,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:03:32,907 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:03:32,909 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:03:32,910 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 09:03:32,910 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:03:32,910 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 09:03:32,910 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:03:32,910 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:03:32,910 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:03:32,911 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:03:32,911 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:03:32,911 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:03:32,923 INFO L134 CoverageAnalysis]: Checked inductivity of 324 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 288 trivial. 0 not checked. [2020-10-28 09:03:32,923 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [758891813] [2020-10-28 09:03:32,924 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 09:03:32,924 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-10-28 09:03:32,924 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1706238134] [2020-10-28 09:03:32,924 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-28 09:03:32,925 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 09:03:32,925 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-28 09:03:32,925 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=75, Unknown=0, NotChecked=0, Total=132 [2020-10-28 09:03:32,925 INFO L87 Difference]: Start difference. First operand 108 states and 117 transitions. Second operand 12 states. [2020-10-28 09:03:33,261 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 09:03:33,261 INFO L93 Difference]: Finished difference Result 210 states and 236 transitions. [2020-10-28 09:03:33,262 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-28 09:03:33,262 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 103 [2020-10-28 09:03:33,262 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 09:03:33,263 INFO L225 Difference]: With dead ends: 210 [2020-10-28 09:03:33,263 INFO L226 Difference]: Without dead ends: 117 [2020-10-28 09:03:33,264 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=57, Invalid=75, Unknown=0, NotChecked=0, Total=132 [2020-10-28 09:03:33,264 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 117 states. [2020-10-28 09:03:33,271 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 117 to 117. [2020-10-28 09:03:33,271 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 117 states. [2020-10-28 09:03:33,272 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 117 states to 117 states and 126 transitions. [2020-10-28 09:03:33,272 INFO L78 Accepts]: Start accepts. Automaton has 117 states and 126 transitions. Word has length 103 [2020-10-28 09:03:33,273 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 09:03:33,273 INFO L481 AbstractCegarLoop]: Abstraction has 117 states and 126 transitions. [2020-10-28 09:03:33,273 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-28 09:03:33,273 INFO L276 IsEmpty]: Start isEmpty. Operand 117 states and 126 transitions. [2020-10-28 09:03:33,274 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2020-10-28 09:03:33,274 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 09:03:33,274 INFO L422 BasicCegarLoop]: trace histogram [9, 9, 9, 9, 9, 9, 9, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 09:03:33,274 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-28 09:03:33,275 INFO L429 AbstractCegarLoop]: === Iteration 11 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 09:03:33,275 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 09:03:33,275 INFO L82 PathProgramCache]: Analyzing trace with hash 1875081924, now seen corresponding path program 9 times [2020-10-28 09:03:33,275 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 09:03:33,276 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1464112316] [2020-10-28 09:03:33,276 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 09:03:33,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:03:33,336 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:03:33,398 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:03:33,454 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:03:33,504 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:03:33,553 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:03:33,743 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:03:38,315 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:03:38,315 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 122 [2020-10-28 09:03:38,315 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-28 09:03:38,315 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5004 [2020-10-28 09:03:38,315 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:03:38,316 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:03:38,316 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-28 09:03:38,316 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 22 [2020-10-28 09:03:38,316 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-28 09:03:38,316 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:03:38,472 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 09:03:38,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:03:38,474 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:03:38,476 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:03:38,476 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 09:03:38,477 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:03:38,477 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 09:03:38,477 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:03:38,477 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:03:38,477 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:03:38,477 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:03:38,477 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:03:38,478 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:03:38,491 INFO L134 CoverageAnalysis]: Checked inductivity of 405 backedges. 0 proven. 45 refuted. 0 times theorem prover too weak. 360 trivial. 0 not checked. [2020-10-28 09:03:38,492 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1464112316] [2020-10-28 09:03:38,492 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 09:03:38,492 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-10-28 09:03:38,492 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [953662287] [2020-10-28 09:03:38,493 INFO L461 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-28 09:03:38,493 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 09:03:38,493 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-28 09:03:38,493 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=88, Unknown=0, NotChecked=0, Total=156 [2020-10-28 09:03:38,494 INFO L87 Difference]: Start difference. First operand 117 states and 126 transitions. Second operand 13 states. [2020-10-28 09:03:38,863 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 09:03:38,863 INFO L93 Difference]: Finished difference Result 227 states and 253 transitions. [2020-10-28 09:03:38,864 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-28 09:03:38,864 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 112 [2020-10-28 09:03:38,864 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 09:03:38,866 INFO L225 Difference]: With dead ends: 227 [2020-10-28 09:03:38,866 INFO L226 Difference]: Without dead ends: 126 [2020-10-28 09:03:38,867 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=68, Invalid=88, Unknown=0, NotChecked=0, Total=156 [2020-10-28 09:03:38,868 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 126 states. [2020-10-28 09:03:38,882 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 126 to 126. [2020-10-28 09:03:38,883 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 126 states. [2020-10-28 09:03:38,883 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 126 states to 126 states and 135 transitions. [2020-10-28 09:03:38,884 INFO L78 Accepts]: Start accepts. Automaton has 126 states and 135 transitions. Word has length 112 [2020-10-28 09:03:38,884 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 09:03:38,885 INFO L481 AbstractCegarLoop]: Abstraction has 126 states and 135 transitions. [2020-10-28 09:03:38,885 INFO L482 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-28 09:03:38,885 INFO L276 IsEmpty]: Start isEmpty. Operand 126 states and 135 transitions. [2020-10-28 09:03:38,886 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2020-10-28 09:03:38,886 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 09:03:38,887 INFO L422 BasicCegarLoop]: trace histogram [10, 10, 10, 10, 10, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 09:03:38,887 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-28 09:03:38,887 INFO L429 AbstractCegarLoop]: === Iteration 12 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 09:03:38,887 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 09:03:38,888 INFO L82 PathProgramCache]: Analyzing trace with hash -1535201650, now seen corresponding path program 10 times [2020-10-28 09:03:38,888 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 09:03:38,888 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [398444945] [2020-10-28 09:03:38,888 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 09:03:38,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:03:38,955 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:03:38,996 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:03:39,038 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:03:39,074 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:03:39,132 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:03:39,318 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:03:43,933 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:03:43,933 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 131 [2020-10-28 09:03:43,933 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-28 09:03:43,933 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-10-28 09:03:43,934 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:03:43,934 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:03:43,934 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-28 09:03:43,934 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 47 [2020-10-28 09:03:43,934 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-28 09:03:43,934 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:03:44,115 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 09:03:44,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:03:44,118 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:03:44,120 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:03:44,120 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 09:03:44,120 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:03:44,120 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 09:03:44,120 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:03:44,120 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:03:44,121 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:03:44,121 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:03:44,121 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:03:44,121 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:03:44,135 INFO L134 CoverageAnalysis]: Checked inductivity of 495 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 440 trivial. 0 not checked. [2020-10-28 09:03:44,135 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [398444945] [2020-10-28 09:03:44,136 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 09:03:44,136 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2020-10-28 09:03:44,136 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1787802580] [2020-10-28 09:03:44,136 INFO L461 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-10-28 09:03:44,137 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 09:03:44,137 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-10-28 09:03:44,138 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=80, Invalid=102, Unknown=0, NotChecked=0, Total=182 [2020-10-28 09:03:44,138 INFO L87 Difference]: Start difference. First operand 126 states and 135 transitions. Second operand 14 states. [2020-10-28 09:03:44,513 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 09:03:44,514 INFO L93 Difference]: Finished difference Result 244 states and 270 transitions. [2020-10-28 09:03:44,514 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-10-28 09:03:44,514 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 121 [2020-10-28 09:03:44,515 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 09:03:44,516 INFO L225 Difference]: With dead ends: 244 [2020-10-28 09:03:44,516 INFO L226 Difference]: Without dead ends: 135 [2020-10-28 09:03:44,517 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=80, Invalid=102, Unknown=0, NotChecked=0, Total=182 [2020-10-28 09:03:44,518 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 135 states. [2020-10-28 09:03:44,534 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 135 to 135. [2020-10-28 09:03:44,535 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 135 states. [2020-10-28 09:03:44,535 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 135 states to 135 states and 144 transitions. [2020-10-28 09:03:44,536 INFO L78 Accepts]: Start accepts. Automaton has 135 states and 144 transitions. Word has length 121 [2020-10-28 09:03:44,536 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 09:03:44,536 INFO L481 AbstractCegarLoop]: Abstraction has 135 states and 144 transitions. [2020-10-28 09:03:44,536 INFO L482 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-10-28 09:03:44,536 INFO L276 IsEmpty]: Start isEmpty. Operand 135 states and 144 transitions. [2020-10-28 09:03:44,538 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2020-10-28 09:03:44,538 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 09:03:44,538 INFO L422 BasicCegarLoop]: trace histogram [11, 11, 11, 11, 11, 11, 11, 11, 11, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 09:03:44,538 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-28 09:03:44,538 INFO L429 AbstractCegarLoop]: === Iteration 13 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 09:03:44,539 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 09:03:44,539 INFO L82 PathProgramCache]: Analyzing trace with hash -550885116, now seen corresponding path program 11 times [2020-10-28 09:03:44,539 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 09:03:44,539 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1444652780] [2020-10-28 09:03:44,539 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 09:03:44,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:03:44,608 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:03:44,685 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:03:44,745 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:03:44,785 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:03:44,822 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:03:45,043 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:03:49,582 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:03:49,582 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 140 [2020-10-28 09:03:49,582 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-28 09:03:49,583 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-10-28 09:03:49,583 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:03:49,583 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:03:49,583 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-10-28 09:03:49,583 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 76 [2020-10-28 09:03:49,583 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-10-28 09:03:49,583 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:03:49,771 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 09:03:49,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:03:49,775 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:03:49,777 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:03:49,777 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 09:03:49,777 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:03:49,777 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 09:03:49,777 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:03:49,778 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:03:49,778 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:03:49,778 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:03:49,778 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:03:49,778 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:03:49,792 INFO L134 CoverageAnalysis]: Checked inductivity of 594 backedges. 0 proven. 66 refuted. 0 times theorem prover too weak. 528 trivial. 0 not checked. [2020-10-28 09:03:49,793 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1444652780] [2020-10-28 09:03:49,793 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 09:03:49,793 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2020-10-28 09:03:49,793 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1291896239] [2020-10-28 09:03:49,794 INFO L461 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-28 09:03:49,794 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 09:03:49,795 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-28 09:03:49,795 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=93, Invalid=117, Unknown=0, NotChecked=0, Total=210 [2020-10-28 09:03:49,795 INFO L87 Difference]: Start difference. First operand 135 states and 144 transitions. Second operand 15 states. [2020-10-28 09:03:50,270 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 09:03:50,271 INFO L93 Difference]: Finished difference Result 261 states and 287 transitions. [2020-10-28 09:03:50,271 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-28 09:03:50,271 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 130 [2020-10-28 09:03:50,272 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 09:03:50,273 INFO L225 Difference]: With dead ends: 261 [2020-10-28 09:03:50,273 INFO L226 Difference]: Without dead ends: 144 [2020-10-28 09:03:50,275 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=93, Invalid=117, Unknown=0, NotChecked=0, Total=210 [2020-10-28 09:03:50,275 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 144 states. [2020-10-28 09:03:50,283 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 144 to 144. [2020-10-28 09:03:50,283 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 144 states. [2020-10-28 09:03:50,284 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 144 states to 144 states and 153 transitions. [2020-10-28 09:03:50,284 INFO L78 Accepts]: Start accepts. Automaton has 144 states and 153 transitions. Word has length 130 [2020-10-28 09:03:50,284 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 09:03:50,284 INFO L481 AbstractCegarLoop]: Abstraction has 144 states and 153 transitions. [2020-10-28 09:03:50,284 INFO L482 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-28 09:03:50,284 INFO L276 IsEmpty]: Start isEmpty. Operand 144 states and 153 transitions. [2020-10-28 09:03:50,286 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2020-10-28 09:03:50,286 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 09:03:50,286 INFO L422 BasicCegarLoop]: trace histogram [12, 12, 12, 12, 12, 12, 12, 12, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 09:03:50,286 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-28 09:03:50,286 INFO L429 AbstractCegarLoop]: === Iteration 14 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 09:03:50,290 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 09:03:50,290 INFO L82 PathProgramCache]: Analyzing trace with hash -1357954226, now seen corresponding path program 12 times [2020-10-28 09:03:50,290 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 09:03:50,291 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [275851561] [2020-10-28 09:03:50,291 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 09:03:50,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:03:50,404 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:03:50,488 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:03:50,565 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:03:50,621 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:03:50,665 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:03:50,930 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:03:55,345 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:03:55,346 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 149 [2020-10-28 09:03:55,346 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-28 09:03:55,346 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5008 [2020-10-28 09:03:55,346 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:03:55,347 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:03:55,347 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-10-28 09:03:55,347 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 53 [2020-10-28 09:03:55,347 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-28 09:03:55,348 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 09:03:55,557 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 09:03:55,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:03:55,561 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:03:55,563 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:03:55,563 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 09:03:55,563 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:03:55,563 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 09:03:55,564 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:03:55,564 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:03:55,564 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:03:55,564 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:03:55,564 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:03:55,564 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:03:55,580 INFO L134 CoverageAnalysis]: Checked inductivity of 702 backedges. 0 proven. 78 refuted. 0 times theorem prover too weak. 624 trivial. 0 not checked. [2020-10-28 09:03:55,580 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [275851561] [2020-10-28 09:03:55,580 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 09:03:55,580 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2020-10-28 09:03:55,581 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1788162105] [2020-10-28 09:03:55,581 INFO L461 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-10-28 09:03:55,581 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 09:03:55,582 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-10-28 09:03:55,582 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=107, Invalid=133, Unknown=0, NotChecked=0, Total=240 [2020-10-28 09:03:55,582 INFO L87 Difference]: Start difference. First operand 144 states and 153 transitions. Second operand 16 states. [2020-10-28 09:03:56,052 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 09:03:56,052 INFO L93 Difference]: Finished difference Result 278 states and 304 transitions. [2020-10-28 09:03:56,053 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-10-28 09:03:56,053 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 139 [2020-10-28 09:03:56,053 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 09:03:56,054 INFO L225 Difference]: With dead ends: 278 [2020-10-28 09:03:56,054 INFO L226 Difference]: Without dead ends: 153 [2020-10-28 09:03:56,055 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=107, Invalid=133, Unknown=0, NotChecked=0, Total=240 [2020-10-28 09:03:56,056 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 153 states. [2020-10-28 09:03:56,063 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 153 to 153. [2020-10-28 09:03:56,064 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 153 states. [2020-10-28 09:03:56,065 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 153 states to 153 states and 162 transitions. [2020-10-28 09:03:56,065 INFO L78 Accepts]: Start accepts. Automaton has 153 states and 162 transitions. Word has length 139 [2020-10-28 09:03:56,065 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 09:03:56,065 INFO L481 AbstractCegarLoop]: Abstraction has 153 states and 162 transitions. [2020-10-28 09:03:56,065 INFO L482 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-10-28 09:03:56,065 INFO L276 IsEmpty]: Start isEmpty. Operand 153 states and 162 transitions. [2020-10-28 09:03:56,067 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2020-10-28 09:03:56,067 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 09:03:56,067 INFO L422 BasicCegarLoop]: trace histogram [13, 13, 13, 13, 13, 13, 13, 13, 13, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 09:03:56,067 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-10-28 09:03:56,068 INFO L429 AbstractCegarLoop]: === Iteration 15 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 09:03:56,068 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 09:03:56,068 INFO L82 PathProgramCache]: Analyzing trace with hash -1008875708, now seen corresponding path program 13 times [2020-10-28 09:03:56,068 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 09:03:56,069 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [594199652] [2020-10-28 09:03:56,069 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 09:03:56,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:03:56,149 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:03:56,224 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:03:56,313 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:03:56,375 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:03:56,427 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:03:56,767 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:04:01,116 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:04:01,116 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 158 [2020-10-28 09:04:01,116 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-28 09:04:01,117 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-10-28 09:04:01,117 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:04:01,117 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:04:01,117 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-10-28 09:04:01,117 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 41 [2020-10-28 09:04:01,117 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-10-28 09:04:01,117 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:04:01,362 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 09:04:01,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:04:01,366 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:04:01,368 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:04:01,368 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 09:04:01,368 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:04:01,368 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 09:04:01,368 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:04:01,369 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:04:01,369 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:04:01,369 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:04:01,369 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:04:01,369 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:04:01,384 INFO L134 CoverageAnalysis]: Checked inductivity of 819 backedges. 0 proven. 91 refuted. 0 times theorem prover too weak. 728 trivial. 0 not checked. [2020-10-28 09:04:01,384 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [594199652] [2020-10-28 09:04:01,385 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 09:04:01,385 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17] total 17 [2020-10-28 09:04:01,385 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1675218721] [2020-10-28 09:04:01,385 INFO L461 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-28 09:04:01,386 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 09:04:01,386 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-28 09:04:01,386 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=122, Invalid=150, Unknown=0, NotChecked=0, Total=272 [2020-10-28 09:04:01,386 INFO L87 Difference]: Start difference. First operand 153 states and 162 transitions. Second operand 17 states. [2020-10-28 09:04:01,886 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 09:04:01,886 INFO L93 Difference]: Finished difference Result 295 states and 321 transitions. [2020-10-28 09:04:01,887 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-10-28 09:04:01,887 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 148 [2020-10-28 09:04:01,887 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 09:04:01,888 INFO L225 Difference]: With dead ends: 295 [2020-10-28 09:04:01,888 INFO L226 Difference]: Without dead ends: 162 [2020-10-28 09:04:01,889 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=122, Invalid=150, Unknown=0, NotChecked=0, Total=272 [2020-10-28 09:04:01,890 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 162 states. [2020-10-28 09:04:01,898 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 162 to 162. [2020-10-28 09:04:01,898 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 162 states. [2020-10-28 09:04:01,899 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 162 states to 162 states and 171 transitions. [2020-10-28 09:04:01,899 INFO L78 Accepts]: Start accepts. Automaton has 162 states and 171 transitions. Word has length 148 [2020-10-28 09:04:01,899 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 09:04:01,899 INFO L481 AbstractCegarLoop]: Abstraction has 162 states and 171 transitions. [2020-10-28 09:04:01,899 INFO L482 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-28 09:04:01,900 INFO L276 IsEmpty]: Start isEmpty. Operand 162 states and 171 transitions. [2020-10-28 09:04:01,901 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 158 [2020-10-28 09:04:01,901 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 09:04:01,901 INFO L422 BasicCegarLoop]: trace histogram [14, 14, 14, 14, 14, 14, 14, 14, 14, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 09:04:01,901 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-10-28 09:04:01,902 INFO L429 AbstractCegarLoop]: === Iteration 16 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 09:04:01,902 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 09:04:01,902 INFO L82 PathProgramCache]: Analyzing trace with hash 1779197966, now seen corresponding path program 14 times [2020-10-28 09:04:01,902 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 09:04:01,903 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [747134452] [2020-10-28 09:04:01,903 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 09:04:01,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:04:01,971 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:04:02,036 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:04:02,096 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:04:02,151 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:04:02,202 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:04:02,564 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:04:06,963 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:04:06,963 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 167 [2020-10-28 09:04:06,963 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-28 09:04:06,963 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5017 [2020-10-28 09:04:06,963 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:04:06,964 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:04:06,964 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 16 [2020-10-28 09:04:06,964 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 75 [2020-10-28 09:04:06,964 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-28 09:04:06,964 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:04:07,228 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 09:04:07,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:04:07,231 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:04:07,232 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:04:07,233 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 09:04:07,233 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:04:07,233 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 09:04:07,233 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:04:07,233 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:04:07,233 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:04:07,234 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:04:07,234 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:04:07,234 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:04:07,252 INFO L134 CoverageAnalysis]: Checked inductivity of 945 backedges. 0 proven. 105 refuted. 0 times theorem prover too weak. 840 trivial. 0 not checked. [2020-10-28 09:04:07,252 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [747134452] [2020-10-28 09:04:07,253 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 09:04:07,253 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18] total 18 [2020-10-28 09:04:07,253 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1449968904] [2020-10-28 09:04:07,254 INFO L461 AbstractCegarLoop]: Interpolant automaton has 18 states [2020-10-28 09:04:07,254 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 09:04:07,254 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2020-10-28 09:04:07,255 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=138, Invalid=168, Unknown=0, NotChecked=0, Total=306 [2020-10-28 09:04:07,255 INFO L87 Difference]: Start difference. First operand 162 states and 171 transitions. Second operand 18 states. [2020-10-28 09:04:07,796 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 09:04:07,797 INFO L93 Difference]: Finished difference Result 312 states and 338 transitions. [2020-10-28 09:04:07,797 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-10-28 09:04:07,797 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 157 [2020-10-28 09:04:07,797 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 09:04:07,802 INFO L225 Difference]: With dead ends: 312 [2020-10-28 09:04:07,803 INFO L226 Difference]: Without dead ends: 171 [2020-10-28 09:04:07,804 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=138, Invalid=168, Unknown=0, NotChecked=0, Total=306 [2020-10-28 09:04:07,804 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 171 states. [2020-10-28 09:04:07,815 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 171 to 171. [2020-10-28 09:04:07,815 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 171 states. [2020-10-28 09:04:07,817 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 171 states to 171 states and 180 transitions. [2020-10-28 09:04:07,817 INFO L78 Accepts]: Start accepts. Automaton has 171 states and 180 transitions. Word has length 157 [2020-10-28 09:04:07,817 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 09:04:07,818 INFO L481 AbstractCegarLoop]: Abstraction has 171 states and 180 transitions. [2020-10-28 09:04:07,818 INFO L482 AbstractCegarLoop]: Interpolant automaton has 18 states. [2020-10-28 09:04:07,818 INFO L276 IsEmpty]: Start isEmpty. Operand 171 states and 180 transitions. [2020-10-28 09:04:07,820 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 167 [2020-10-28 09:04:07,820 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 09:04:07,820 INFO L422 BasicCegarLoop]: trace histogram [15, 15, 15, 15, 15, 15, 15, 15, 15, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 09:04:07,820 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-10-28 09:04:07,820 INFO L429 AbstractCegarLoop]: === Iteration 17 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 09:04:07,821 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 09:04:07,821 INFO L82 PathProgramCache]: Analyzing trace with hash -1398123132, now seen corresponding path program 15 times [2020-10-28 09:04:07,822 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 09:04:07,822 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [69542257] [2020-10-28 09:04:07,822 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 09:04:07,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:04:07,920 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:04:08,032 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:04:08,100 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:04:08,162 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:04:08,220 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:04:08,648 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:04:12,904 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:04:12,904 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 176 [2020-10-28 09:04:12,904 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-28 09:04:12,904 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5021 [2020-10-28 09:04:12,904 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:04:12,904 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:04:12,905 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 17 [2020-10-28 09:04:12,905 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 79 [2020-10-28 09:04:12,905 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-10-28 09:04:12,905 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:04:13,186 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 09:04:13,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:04:13,190 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:04:13,192 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:04:13,192 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 09:04:13,192 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:04:13,192 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 09:04:13,192 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:04:13,192 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:04:13,193 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:04:13,193 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:04:13,193 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:04:13,193 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:04:13,213 INFO L134 CoverageAnalysis]: Checked inductivity of 1080 backedges. 0 proven. 120 refuted. 0 times theorem prover too weak. 960 trivial. 0 not checked. [2020-10-28 09:04:13,214 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [69542257] [2020-10-28 09:04:13,214 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 09:04:13,214 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19] total 19 [2020-10-28 09:04:13,214 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [950238153] [2020-10-28 09:04:13,215 INFO L461 AbstractCegarLoop]: Interpolant automaton has 19 states [2020-10-28 09:04:13,215 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 09:04:13,215 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2020-10-28 09:04:13,216 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=155, Invalid=187, Unknown=0, NotChecked=0, Total=342 [2020-10-28 09:04:13,216 INFO L87 Difference]: Start difference. First operand 171 states and 180 transitions. Second operand 19 states. [2020-10-28 09:04:13,810 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 09:04:13,810 INFO L93 Difference]: Finished difference Result 329 states and 355 transitions. [2020-10-28 09:04:13,810 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-10-28 09:04:13,811 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 166 [2020-10-28 09:04:13,811 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 09:04:13,813 INFO L225 Difference]: With dead ends: 329 [2020-10-28 09:04:13,813 INFO L226 Difference]: Without dead ends: 180 [2020-10-28 09:04:13,815 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=155, Invalid=187, Unknown=0, NotChecked=0, Total=342 [2020-10-28 09:04:13,815 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 180 states. [2020-10-28 09:04:13,828 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 180 to 180. [2020-10-28 09:04:13,829 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 180 states. [2020-10-28 09:04:13,830 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 180 states to 180 states and 189 transitions. [2020-10-28 09:04:13,830 INFO L78 Accepts]: Start accepts. Automaton has 180 states and 189 transitions. Word has length 166 [2020-10-28 09:04:13,830 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 09:04:13,830 INFO L481 AbstractCegarLoop]: Abstraction has 180 states and 189 transitions. [2020-10-28 09:04:13,830 INFO L482 AbstractCegarLoop]: Interpolant automaton has 19 states. [2020-10-28 09:04:13,830 INFO L276 IsEmpty]: Start isEmpty. Operand 180 states and 189 transitions. [2020-10-28 09:04:13,832 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 176 [2020-10-28 09:04:13,832 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 09:04:13,832 INFO L422 BasicCegarLoop]: trace histogram [16, 16, 16, 16, 16, 16, 16, 16, 16, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 09:04:13,833 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-10-28 09:04:13,833 INFO L429 AbstractCegarLoop]: === Iteration 18 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 09:04:13,833 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 09:04:13,833 INFO L82 PathProgramCache]: Analyzing trace with hash -1666573106, now seen corresponding path program 16 times [2020-10-28 09:04:13,834 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 09:04:13,834 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1346517623] [2020-10-28 09:04:13,834 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 09:04:13,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:04:13,913 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:04:13,995 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:04:14,071 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:04:14,144 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:04:14,210 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:04:14,727 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:04:18,897 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:04:18,898 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 185 [2020-10-28 09:04:18,898 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-28 09:04:18,898 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5015 [2020-10-28 09:04:18,898 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:04:18,898 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:04:18,898 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 18 [2020-10-28 09:04:18,898 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 65 [2020-10-28 09:04:18,898 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-28 09:04:18,898 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:04:19,206 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 09:04:19,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:04:19,209 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:04:19,211 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:04:19,211 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 09:04:19,211 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:04:19,211 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-28 09:04:19,211 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:04:19,211 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:04:19,211 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:04:19,211 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:04:19,212 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:04:19,212 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:04:19,226 INFO L134 CoverageAnalysis]: Checked inductivity of 1224 backedges. 0 proven. 136 refuted. 0 times theorem prover too weak. 1088 trivial. 0 not checked. [2020-10-28 09:04:19,226 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1346517623] [2020-10-28 09:04:19,226 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 09:04:19,227 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20] total 20 [2020-10-28 09:04:19,227 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2015704634] [2020-10-28 09:04:19,227 INFO L461 AbstractCegarLoop]: Interpolant automaton has 20 states [2020-10-28 09:04:19,227 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 09:04:19,228 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2020-10-28 09:04:19,228 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=173, Invalid=207, Unknown=0, NotChecked=0, Total=380 [2020-10-28 09:04:19,228 INFO L87 Difference]: Start difference. First operand 180 states and 189 transitions. Second operand 20 states. [2020-10-28 09:04:19,835 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 09:04:19,835 INFO L93 Difference]: Finished difference Result 346 states and 372 transitions. [2020-10-28 09:04:19,835 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2020-10-28 09:04:19,836 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 175 [2020-10-28 09:04:19,836 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 09:04:19,837 INFO L225 Difference]: With dead ends: 346 [2020-10-28 09:04:19,837 INFO L226 Difference]: Without dead ends: 189 [2020-10-28 09:04:19,838 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=173, Invalid=207, Unknown=0, NotChecked=0, Total=380 [2020-10-28 09:04:19,839 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 189 states. [2020-10-28 09:04:19,847 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 189 to 189. [2020-10-28 09:04:19,847 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 189 states. [2020-10-28 09:04:19,848 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 189 states to 189 states and 198 transitions. [2020-10-28 09:04:19,849 INFO L78 Accepts]: Start accepts. Automaton has 189 states and 198 transitions. Word has length 175 [2020-10-28 09:04:19,849 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 09:04:19,849 INFO L481 AbstractCegarLoop]: Abstraction has 189 states and 198 transitions. [2020-10-28 09:04:19,849 INFO L482 AbstractCegarLoop]: Interpolant automaton has 20 states. [2020-10-28 09:04:19,849 INFO L276 IsEmpty]: Start isEmpty. Operand 189 states and 198 transitions. [2020-10-28 09:04:19,851 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 185 [2020-10-28 09:04:19,851 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 09:04:19,851 INFO L422 BasicCegarLoop]: trace histogram [17, 17, 17, 17, 17, 17, 17, 17, 17, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 09:04:19,852 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2020-10-28 09:04:19,852 INFO L429 AbstractCegarLoop]: === Iteration 19 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 09:04:19,852 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 09:04:19,852 INFO L82 PathProgramCache]: Analyzing trace with hash -748956732, now seen corresponding path program 17 times [2020-10-28 09:04:19,852 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 09:04:19,853 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [680759280] [2020-10-28 09:04:19,853 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 09:04:19,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:04:19,939 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:04:20,045 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:04:20,186 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:04:20,307 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:04:20,413 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:04:20,961 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:04:24,914 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:04:24,914 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 194 [2020-10-28 09:04:24,914 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-28 09:04:24,914 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5007 [2020-10-28 09:04:24,914 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:04:24,914 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:04:24,915 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 19 [2020-10-28 09:04:24,915 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 49 [2020-10-28 09:04:24,915 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 19 [2020-10-28 09:04:24,915 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:04:25,245 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 09:04:25,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:04:25,248 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:04:25,250 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:04:25,250 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 09:04:25,250 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:04:25,250 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 09:04:25,250 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:04:25,250 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:04:25,250 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:04:25,250 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:04:25,251 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:04:25,251 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:04:25,291 INFO L134 CoverageAnalysis]: Checked inductivity of 1377 backedges. 0 proven. 153 refuted. 0 times theorem prover too weak. 1224 trivial. 0 not checked. [2020-10-28 09:04:25,291 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [680759280] [2020-10-28 09:04:25,291 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 09:04:25,291 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21] total 21 [2020-10-28 09:04:25,291 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1743833574] [2020-10-28 09:04:25,292 INFO L461 AbstractCegarLoop]: Interpolant automaton has 21 states [2020-10-28 09:04:25,292 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 09:04:25,292 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2020-10-28 09:04:25,293 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=192, Invalid=228, Unknown=0, NotChecked=0, Total=420 [2020-10-28 09:04:25,293 INFO L87 Difference]: Start difference. First operand 189 states and 198 transitions. Second operand 21 states. [2020-10-28 09:04:25,858 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 09:04:25,858 INFO L93 Difference]: Finished difference Result 363 states and 389 transitions. [2020-10-28 09:04:25,859 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-10-28 09:04:25,859 INFO L78 Accepts]: Start accepts. Automaton has 21 states. Word has length 184 [2020-10-28 09:04:25,859 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 09:04:25,861 INFO L225 Difference]: With dead ends: 363 [2020-10-28 09:04:25,861 INFO L226 Difference]: Without dead ends: 198 [2020-10-28 09:04:25,863 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=192, Invalid=228, Unknown=0, NotChecked=0, Total=420 [2020-10-28 09:04:25,864 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 198 states. [2020-10-28 09:04:25,872 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 198 to 198. [2020-10-28 09:04:25,873 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 198 states. [2020-10-28 09:04:25,874 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 198 states to 198 states and 207 transitions. [2020-10-28 09:04:25,874 INFO L78 Accepts]: Start accepts. Automaton has 198 states and 207 transitions. Word has length 184 [2020-10-28 09:04:25,874 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 09:04:25,874 INFO L481 AbstractCegarLoop]: Abstraction has 198 states and 207 transitions. [2020-10-28 09:04:25,874 INFO L482 AbstractCegarLoop]: Interpolant automaton has 21 states. [2020-10-28 09:04:25,874 INFO L276 IsEmpty]: Start isEmpty. Operand 198 states and 207 transitions. [2020-10-28 09:04:25,876 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 194 [2020-10-28 09:04:25,877 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 09:04:25,877 INFO L422 BasicCegarLoop]: trace histogram [18, 18, 18, 18, 18, 18, 18, 18, 18, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 09:04:25,877 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2020-10-28 09:04:25,877 INFO L429 AbstractCegarLoop]: === Iteration 20 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 09:04:25,878 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 09:04:25,878 INFO L82 PathProgramCache]: Analyzing trace with hash 589062542, now seen corresponding path program 18 times [2020-10-28 09:04:25,878 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 09:04:25,878 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [693278646] [2020-10-28 09:04:25,878 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 09:04:25,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:04:25,980 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:04:26,076 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:04:26,166 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:04:26,248 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:04:26,324 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:04:26,985 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:04:30,963 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:04:30,964 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 203 [2020-10-28 09:04:30,964 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-28 09:04:30,964 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5014 [2020-10-28 09:04:30,964 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:04:30,964 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:04:30,964 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 20 [2020-10-28 09:04:30,964 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 51 [2020-10-28 09:04:30,964 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-10-28 09:04:30,964 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:04:31,330 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 09:04:31,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:04:31,333 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:04:31,334 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:04:31,334 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 09:04:31,334 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:04:31,335 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 09:04:31,335 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:04:31,335 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:04:31,335 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:04:31,335 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:04:31,335 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:04:31,335 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:04:31,355 INFO L134 CoverageAnalysis]: Checked inductivity of 1539 backedges. 0 proven. 171 refuted. 0 times theorem prover too weak. 1368 trivial. 0 not checked. [2020-10-28 09:04:31,355 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [693278646] [2020-10-28 09:04:31,356 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 09:04:31,356 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22] total 22 [2020-10-28 09:04:31,356 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1111296751] [2020-10-28 09:04:31,356 INFO L461 AbstractCegarLoop]: Interpolant automaton has 22 states [2020-10-28 09:04:31,356 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 09:04:31,357 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2020-10-28 09:04:31,357 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=212, Invalid=250, Unknown=0, NotChecked=0, Total=462 [2020-10-28 09:04:31,357 INFO L87 Difference]: Start difference. First operand 198 states and 207 transitions. Second operand 22 states. [2020-10-28 09:04:31,977 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 09:04:31,977 INFO L93 Difference]: Finished difference Result 380 states and 406 transitions. [2020-10-28 09:04:31,977 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2020-10-28 09:04:31,978 INFO L78 Accepts]: Start accepts. Automaton has 22 states. Word has length 193 [2020-10-28 09:04:31,978 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 09:04:31,979 INFO L225 Difference]: With dead ends: 380 [2020-10-28 09:04:31,979 INFO L226 Difference]: Without dead ends: 207 [2020-10-28 09:04:31,980 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=212, Invalid=250, Unknown=0, NotChecked=0, Total=462 [2020-10-28 09:04:31,981 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 207 states. [2020-10-28 09:04:31,990 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 207 to 207. [2020-10-28 09:04:31,990 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 207 states. [2020-10-28 09:04:31,991 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 207 states to 207 states and 216 transitions. [2020-10-28 09:04:31,991 INFO L78 Accepts]: Start accepts. Automaton has 207 states and 216 transitions. Word has length 193 [2020-10-28 09:04:31,991 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 09:04:31,991 INFO L481 AbstractCegarLoop]: Abstraction has 207 states and 216 transitions. [2020-10-28 09:04:31,992 INFO L482 AbstractCegarLoop]: Interpolant automaton has 22 states. [2020-10-28 09:04:31,992 INFO L276 IsEmpty]: Start isEmpty. Operand 207 states and 216 transitions. [2020-10-28 09:04:31,994 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 203 [2020-10-28 09:04:31,994 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 09:04:31,995 INFO L422 BasicCegarLoop]: trace histogram [19, 19, 19, 19, 19, 19, 19, 19, 19, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 09:04:31,995 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2020-10-28 09:04:31,995 INFO L429 AbstractCegarLoop]: === Iteration 21 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 09:04:31,995 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 09:04:31,995 INFO L82 PathProgramCache]: Analyzing trace with hash -591511036, now seen corresponding path program 19 times [2020-10-28 09:04:31,996 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 09:04:31,996 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [18816093] [2020-10-28 09:04:31,996 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 09:04:32,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:04:32,114 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:04:32,257 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:04:32,349 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:04:32,471 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:04:32,556 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:04:33,281 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:04:37,091 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:04:37,091 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 212 [2020-10-28 09:04:37,091 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-28 09:04:37,091 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5027 [2020-10-28 09:04:37,092 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:04:37,092 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:04:37,092 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 21 [2020-10-28 09:04:37,092 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 116 [2020-10-28 09:04:37,092 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 21 [2020-10-28 09:04:37,092 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:04:37,543 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 09:04:37,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:04:37,547 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:04:37,550 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:04:37,550 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 09:04:37,550 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:04:37,551 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 09:04:37,551 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:04:37,551 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:04:37,551 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:04:37,551 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:04:37,551 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:04:37,551 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:04:37,598 INFO L134 CoverageAnalysis]: Checked inductivity of 1710 backedges. 0 proven. 190 refuted. 0 times theorem prover too weak. 1520 trivial. 0 not checked. [2020-10-28 09:04:37,598 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [18816093] [2020-10-28 09:04:37,598 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 09:04:37,599 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23] total 23 [2020-10-28 09:04:37,599 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1766336064] [2020-10-28 09:04:37,599 INFO L461 AbstractCegarLoop]: Interpolant automaton has 23 states [2020-10-28 09:04:37,600 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 09:04:37,600 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2020-10-28 09:04:37,601 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=233, Invalid=273, Unknown=0, NotChecked=0, Total=506 [2020-10-28 09:04:37,601 INFO L87 Difference]: Start difference. First operand 207 states and 216 transitions. Second operand 23 states. [2020-10-28 09:04:38,233 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 09:04:38,233 INFO L93 Difference]: Finished difference Result 397 states and 423 transitions. [2020-10-28 09:04:38,233 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2020-10-28 09:04:38,234 INFO L78 Accepts]: Start accepts. Automaton has 23 states. Word has length 202 [2020-10-28 09:04:38,234 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 09:04:38,235 INFO L225 Difference]: With dead ends: 397 [2020-10-28 09:04:38,235 INFO L226 Difference]: Without dead ends: 216 [2020-10-28 09:04:38,236 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=233, Invalid=273, Unknown=0, NotChecked=0, Total=506 [2020-10-28 09:04:38,237 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 216 states. [2020-10-28 09:04:38,246 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 216 to 216. [2020-10-28 09:04:38,246 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 216 states. [2020-10-28 09:04:38,247 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 216 states to 216 states and 225 transitions. [2020-10-28 09:04:38,247 INFO L78 Accepts]: Start accepts. Automaton has 216 states and 225 transitions. Word has length 202 [2020-10-28 09:04:38,248 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 09:04:38,248 INFO L481 AbstractCegarLoop]: Abstraction has 216 states and 225 transitions. [2020-10-28 09:04:38,248 INFO L482 AbstractCegarLoop]: Interpolant automaton has 23 states. [2020-10-28 09:04:38,248 INFO L276 IsEmpty]: Start isEmpty. Operand 216 states and 225 transitions. [2020-10-28 09:04:38,249 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 212 [2020-10-28 09:04:38,249 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 09:04:38,249 INFO L422 BasicCegarLoop]: trace histogram [20, 20, 20, 20, 20, 20, 20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 09:04:38,249 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2020-10-28 09:04:38,250 INFO L429 AbstractCegarLoop]: === Iteration 22 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 09:04:38,250 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 09:04:38,250 INFO L82 PathProgramCache]: Analyzing trace with hash 781661774, now seen corresponding path program 20 times [2020-10-28 09:04:38,250 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 09:04:38,250 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2051574566] [2020-10-28 09:04:38,251 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 09:04:38,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:04:38,375 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:04:38,530 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:04:38,635 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:04:38,730 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:04:38,817 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:04:39,730 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:04:43,368 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:04:43,368 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 221 [2020-10-28 09:04:43,368 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-28 09:04:43,368 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5046 [2020-10-28 09:04:43,368 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:04:43,369 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:04:43,369 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 22 [2020-10-28 09:04:43,369 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 55 [2020-10-28 09:04:43,369 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-10-28 09:04:43,369 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:04:43,797 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 09:04:43,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:04:43,801 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:04:43,803 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:04:43,803 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 09:04:43,803 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:04:43,804 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 09:04:43,804 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:04:43,804 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:04:43,804 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:04:43,804 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:04:43,804 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:04:43,804 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:04:43,831 INFO L134 CoverageAnalysis]: Checked inductivity of 1890 backedges. 0 proven. 210 refuted. 0 times theorem prover too weak. 1680 trivial. 0 not checked. [2020-10-28 09:04:43,831 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2051574566] [2020-10-28 09:04:43,832 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 09:04:43,832 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24] total 24 [2020-10-28 09:04:43,832 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2052497620] [2020-10-28 09:04:43,832 INFO L461 AbstractCegarLoop]: Interpolant automaton has 24 states [2020-10-28 09:04:43,832 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 09:04:43,833 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2020-10-28 09:04:43,833 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=255, Invalid=297, Unknown=0, NotChecked=0, Total=552 [2020-10-28 09:04:43,833 INFO L87 Difference]: Start difference. First operand 216 states and 225 transitions. Second operand 24 states. [2020-10-28 09:04:44,498 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 09:04:44,499 INFO L93 Difference]: Finished difference Result 414 states and 440 transitions. [2020-10-28 09:04:44,501 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2020-10-28 09:04:44,502 INFO L78 Accepts]: Start accepts. Automaton has 24 states. Word has length 211 [2020-10-28 09:04:44,502 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 09:04:44,503 INFO L225 Difference]: With dead ends: 414 [2020-10-28 09:04:44,504 INFO L226 Difference]: Without dead ends: 225 [2020-10-28 09:04:44,507 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=255, Invalid=297, Unknown=0, NotChecked=0, Total=552 [2020-10-28 09:04:44,507 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 225 states. [2020-10-28 09:04:44,522 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 225 to 225. [2020-10-28 09:04:44,522 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 225 states. [2020-10-28 09:04:44,523 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 225 states to 225 states and 234 transitions. [2020-10-28 09:04:44,523 INFO L78 Accepts]: Start accepts. Automaton has 225 states and 234 transitions. Word has length 211 [2020-10-28 09:04:44,523 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 09:04:44,524 INFO L481 AbstractCegarLoop]: Abstraction has 225 states and 234 transitions. [2020-10-28 09:04:44,525 INFO L482 AbstractCegarLoop]: Interpolant automaton has 24 states. [2020-10-28 09:04:44,525 INFO L276 IsEmpty]: Start isEmpty. Operand 225 states and 234 transitions. [2020-10-28 09:04:44,526 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 221 [2020-10-28 09:04:44,526 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 09:04:44,526 INFO L422 BasicCegarLoop]: trace histogram [21, 21, 21, 21, 21, 21, 21, 21, 21, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 09:04:44,526 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2020-10-28 09:04:44,527 INFO L429 AbstractCegarLoop]: === Iteration 23 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 09:04:44,527 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 09:04:44,527 INFO L82 PathProgramCache]: Analyzing trace with hash -1734500284, now seen corresponding path program 21 times [2020-10-28 09:04:44,527 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 09:04:44,528 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [67233212] [2020-10-28 09:04:44,528 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 09:04:44,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:04:44,654 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:04:44,784 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:04:44,888 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:04:44,987 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:04:45,084 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:04:46,025 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:04:49,616 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:04:49,617 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 230 [2020-10-28 09:04:49,617 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-28 09:04:49,617 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5011 [2020-10-28 09:04:49,617 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:04:49,617 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:04:49,617 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 23 [2020-10-28 09:04:49,617 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 126 [2020-10-28 09:04:49,617 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-10-28 09:04:49,617 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:04:50,075 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 09:04:50,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:04:50,077 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:04:50,080 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:04:50,080 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 09:04:50,080 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:04:50,080 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 09:04:50,080 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:04:50,080 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:04:50,080 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:04:50,080 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:04:50,081 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:04:50,081 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:04:50,104 INFO L134 CoverageAnalysis]: Checked inductivity of 2079 backedges. 0 proven. 231 refuted. 0 times theorem prover too weak. 1848 trivial. 0 not checked. [2020-10-28 09:04:50,105 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [67233212] [2020-10-28 09:04:50,105 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 09:04:50,105 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25] total 25 [2020-10-28 09:04:50,105 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [7453123] [2020-10-28 09:04:50,105 INFO L461 AbstractCegarLoop]: Interpolant automaton has 25 states [2020-10-28 09:04:50,105 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 09:04:50,106 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2020-10-28 09:04:50,106 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=278, Invalid=322, Unknown=0, NotChecked=0, Total=600 [2020-10-28 09:04:50,106 INFO L87 Difference]: Start difference. First operand 225 states and 234 transitions. Second operand 25 states. [2020-10-28 09:04:50,748 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 09:04:50,748 INFO L93 Difference]: Finished difference Result 431 states and 457 transitions. [2020-10-28 09:04:50,749 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2020-10-28 09:04:50,749 INFO L78 Accepts]: Start accepts. Automaton has 25 states. Word has length 220 [2020-10-28 09:04:50,749 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 09:04:50,751 INFO L225 Difference]: With dead ends: 431 [2020-10-28 09:04:50,751 INFO L226 Difference]: Without dead ends: 234 [2020-10-28 09:04:50,752 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=278, Invalid=322, Unknown=0, NotChecked=0, Total=600 [2020-10-28 09:04:50,753 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 234 states. [2020-10-28 09:04:50,765 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 234 to 234. [2020-10-28 09:04:50,765 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 234 states. [2020-10-28 09:04:50,766 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 234 states to 234 states and 243 transitions. [2020-10-28 09:04:50,766 INFO L78 Accepts]: Start accepts. Automaton has 234 states and 243 transitions. Word has length 220 [2020-10-28 09:04:50,766 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 09:04:50,767 INFO L481 AbstractCegarLoop]: Abstraction has 234 states and 243 transitions. [2020-10-28 09:04:50,767 INFO L482 AbstractCegarLoop]: Interpolant automaton has 25 states. [2020-10-28 09:04:50,767 INFO L276 IsEmpty]: Start isEmpty. Operand 234 states and 243 transitions. [2020-10-28 09:04:50,768 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 230 [2020-10-28 09:04:50,768 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 09:04:50,768 INFO L422 BasicCegarLoop]: trace histogram [22, 22, 22, 22, 22, 22, 22, 22, 22, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 09:04:50,769 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2020-10-28 09:04:50,769 INFO L429 AbstractCegarLoop]: === Iteration 24 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 09:04:50,769 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 09:04:50,769 INFO L82 PathProgramCache]: Analyzing trace with hash -2058446066, now seen corresponding path program 22 times [2020-10-28 09:04:50,770 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 09:04:50,770 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [430024974] [2020-10-28 09:04:50,770 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 09:04:50,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:04:50,902 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:04:51,043 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:04:51,172 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:04:51,281 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:04:51,381 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:04:52,400 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:04:55,850 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:04:55,850 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 239 [2020-10-28 09:04:55,850 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-28 09:04:55,850 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-10-28 09:04:55,850 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:04:55,850 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:04:55,850 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 24 [2020-10-28 09:04:55,851 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 83 [2020-10-28 09:04:55,851 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-10-28 09:04:55,851 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:04:56,444 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 09:04:56,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:04:56,446 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:04:56,448 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:04:56,449 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 09:04:56,449 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:04:56,449 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 09:04:56,449 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:04:56,449 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:04:56,450 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:04:56,450 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:04:56,450 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:04:56,450 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:04:56,491 INFO L134 CoverageAnalysis]: Checked inductivity of 2277 backedges. 0 proven. 253 refuted. 0 times theorem prover too weak. 2024 trivial. 0 not checked. [2020-10-28 09:04:56,491 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [430024974] [2020-10-28 09:04:56,492 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 09:04:56,492 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [26] total 26 [2020-10-28 09:04:56,493 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [282607811] [2020-10-28 09:04:56,493 INFO L461 AbstractCegarLoop]: Interpolant automaton has 26 states [2020-10-28 09:04:56,494 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 09:04:56,494 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2020-10-28 09:04:56,495 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=302, Invalid=348, Unknown=0, NotChecked=0, Total=650 [2020-10-28 09:04:56,495 INFO L87 Difference]: Start difference. First operand 234 states and 243 transitions. Second operand 26 states. [2020-10-28 09:04:57,228 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 09:04:57,228 INFO L93 Difference]: Finished difference Result 448 states and 474 transitions. [2020-10-28 09:04:57,229 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2020-10-28 09:04:57,229 INFO L78 Accepts]: Start accepts. Automaton has 26 states. Word has length 229 [2020-10-28 09:04:57,229 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 09:04:57,230 INFO L225 Difference]: With dead ends: 448 [2020-10-28 09:04:57,231 INFO L226 Difference]: Without dead ends: 243 [2020-10-28 09:04:57,232 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=302, Invalid=348, Unknown=0, NotChecked=0, Total=650 [2020-10-28 09:04:57,232 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 243 states. [2020-10-28 09:04:57,240 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 243 to 243. [2020-10-28 09:04:57,240 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 243 states. [2020-10-28 09:04:57,242 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 243 states to 243 states and 252 transitions. [2020-10-28 09:04:57,242 INFO L78 Accepts]: Start accepts. Automaton has 243 states and 252 transitions. Word has length 229 [2020-10-28 09:04:57,242 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 09:04:57,242 INFO L481 AbstractCegarLoop]: Abstraction has 243 states and 252 transitions. [2020-10-28 09:04:57,242 INFO L482 AbstractCegarLoop]: Interpolant automaton has 26 states. [2020-10-28 09:04:57,242 INFO L276 IsEmpty]: Start isEmpty. Operand 243 states and 252 transitions. [2020-10-28 09:04:57,244 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 239 [2020-10-28 09:04:57,244 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 09:04:57,244 INFO L422 BasicCegarLoop]: trace histogram [23, 23, 23, 23, 23, 23, 23, 23, 23, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 09:04:57,246 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2020-10-28 09:04:57,246 INFO L429 AbstractCegarLoop]: === Iteration 25 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 09:04:57,246 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 09:04:57,247 INFO L82 PathProgramCache]: Analyzing trace with hash -1043992956, now seen corresponding path program 23 times [2020-10-28 09:04:57,247 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 09:04:57,247 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [33399469] [2020-10-28 09:04:57,247 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 09:04:57,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:04:57,367 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:04:57,547 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:04:57,686 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:04:57,806 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:04:57,916 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:04:59,072 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:05:02,331 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:05:02,332 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 248 [2020-10-28 09:05:02,332 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-28 09:05:02,332 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5007 [2020-10-28 09:05:02,332 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:05:02,332 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:05:02,332 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 25 [2020-10-28 09:05:02,332 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 111 [2020-10-28 09:05:02,332 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 25 [2020-10-28 09:05:02,332 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:05:02,937 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 09:05:02,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:05:02,940 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:05:02,941 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:05:02,942 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 09:05:02,942 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:05:02,942 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 09:05:02,942 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:05:02,942 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:05:02,942 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:05:02,942 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:05:02,943 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:05:02,943 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:05:02,985 INFO L134 CoverageAnalysis]: Checked inductivity of 2484 backedges. 0 proven. 276 refuted. 0 times theorem prover too weak. 2208 trivial. 0 not checked. [2020-10-28 09:05:02,985 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [33399469] [2020-10-28 09:05:02,985 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 09:05:02,985 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [27] total 27 [2020-10-28 09:05:02,986 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [759426270] [2020-10-28 09:05:02,986 INFO L461 AbstractCegarLoop]: Interpolant automaton has 27 states [2020-10-28 09:05:02,986 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 09:05:02,987 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2020-10-28 09:05:02,987 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=327, Invalid=375, Unknown=0, NotChecked=0, Total=702 [2020-10-28 09:05:02,987 INFO L87 Difference]: Start difference. First operand 243 states and 252 transitions. Second operand 27 states. [2020-10-28 09:05:03,735 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 09:05:03,735 INFO L93 Difference]: Finished difference Result 465 states and 491 transitions. [2020-10-28 09:05:03,736 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2020-10-28 09:05:03,736 INFO L78 Accepts]: Start accepts. Automaton has 27 states. Word has length 238 [2020-10-28 09:05:03,736 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 09:05:03,737 INFO L225 Difference]: With dead ends: 465 [2020-10-28 09:05:03,738 INFO L226 Difference]: Without dead ends: 252 [2020-10-28 09:05:03,739 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=327, Invalid=375, Unknown=0, NotChecked=0, Total=702 [2020-10-28 09:05:03,739 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 252 states. [2020-10-28 09:05:03,749 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 252 to 252. [2020-10-28 09:05:03,749 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 252 states. [2020-10-28 09:05:03,750 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 252 states to 252 states and 261 transitions. [2020-10-28 09:05:03,751 INFO L78 Accepts]: Start accepts. Automaton has 252 states and 261 transitions. Word has length 238 [2020-10-28 09:05:03,751 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 09:05:03,751 INFO L481 AbstractCegarLoop]: Abstraction has 252 states and 261 transitions. [2020-10-28 09:05:03,751 INFO L482 AbstractCegarLoop]: Interpolant automaton has 27 states. [2020-10-28 09:05:03,751 INFO L276 IsEmpty]: Start isEmpty. Operand 252 states and 261 transitions. [2020-10-28 09:05:03,753 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 248 [2020-10-28 09:05:03,753 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 09:05:03,753 INFO L422 BasicCegarLoop]: trace histogram [24, 24, 24, 24, 24, 24, 24, 24, 24, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 09:05:03,753 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2020-10-28 09:05:03,753 INFO L429 AbstractCegarLoop]: === Iteration 26 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 09:05:03,754 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 09:05:03,754 INFO L82 PathProgramCache]: Analyzing trace with hash -1032417330, now seen corresponding path program 24 times [2020-10-28 09:05:03,754 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 09:05:03,754 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [636296236] [2020-10-28 09:05:03,754 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 09:05:03,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:05:03,923 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:05:04,106 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:05:04,241 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:05:04,449 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:05:04,602 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:05:06,148 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:05:08,861 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:05:08,862 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 257 [2020-10-28 09:05:08,862 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-28 09:05:08,862 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5009 [2020-10-28 09:05:08,862 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:05:08,862 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:05:08,862 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 26 [2020-10-28 09:05:08,862 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 115 [2020-10-28 09:05:08,862 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-10-28 09:05:08,862 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:05:09,401 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 09:05:09,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:05:09,404 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:05:09,406 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:05:09,406 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 09:05:09,407 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:05:09,407 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 09:05:09,407 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:05:09,407 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:05:09,407 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:05:09,407 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:05:09,407 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:05:09,408 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:05:09,445 INFO L134 CoverageAnalysis]: Checked inductivity of 2700 backedges. 0 proven. 300 refuted. 0 times theorem prover too weak. 2400 trivial. 0 not checked. [2020-10-28 09:05:09,445 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [636296236] [2020-10-28 09:05:09,445 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 09:05:09,445 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [28] total 28 [2020-10-28 09:05:09,445 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [975041391] [2020-10-28 09:05:09,446 INFO L461 AbstractCegarLoop]: Interpolant automaton has 28 states [2020-10-28 09:05:09,446 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 09:05:09,447 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2020-10-28 09:05:09,447 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=353, Invalid=403, Unknown=0, NotChecked=0, Total=756 [2020-10-28 09:05:09,447 INFO L87 Difference]: Start difference. First operand 252 states and 261 transitions. Second operand 28 states. [2020-10-28 09:05:10,231 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 09:05:10,231 INFO L93 Difference]: Finished difference Result 482 states and 508 transitions. [2020-10-28 09:05:10,232 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2020-10-28 09:05:10,232 INFO L78 Accepts]: Start accepts. Automaton has 28 states. Word has length 247 [2020-10-28 09:05:10,232 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 09:05:10,234 INFO L225 Difference]: With dead ends: 482 [2020-10-28 09:05:10,234 INFO L226 Difference]: Without dead ends: 261 [2020-10-28 09:05:10,235 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=353, Invalid=403, Unknown=0, NotChecked=0, Total=756 [2020-10-28 09:05:10,236 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 261 states. [2020-10-28 09:05:10,245 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 261 to 261. [2020-10-28 09:05:10,245 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 261 states. [2020-10-28 09:05:10,246 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 261 states to 261 states and 270 transitions. [2020-10-28 09:05:10,247 INFO L78 Accepts]: Start accepts. Automaton has 261 states and 270 transitions. Word has length 247 [2020-10-28 09:05:10,247 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 09:05:10,247 INFO L481 AbstractCegarLoop]: Abstraction has 261 states and 270 transitions. [2020-10-28 09:05:10,247 INFO L482 AbstractCegarLoop]: Interpolant automaton has 28 states. [2020-10-28 09:05:10,247 INFO L276 IsEmpty]: Start isEmpty. Operand 261 states and 270 transitions. [2020-10-28 09:05:10,248 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 257 [2020-10-28 09:05:10,249 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 09:05:10,249 INFO L422 BasicCegarLoop]: trace histogram [25, 25, 25, 25, 25, 25, 25, 25, 25, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 09:05:10,249 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2020-10-28 09:05:10,249 INFO L429 AbstractCegarLoop]: === Iteration 27 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 09:05:10,250 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 09:05:10,250 INFO L82 PathProgramCache]: Analyzing trace with hash -1107088188, now seen corresponding path program 25 times [2020-10-28 09:05:10,250 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 09:05:10,250 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [508829837] [2020-10-28 09:05:10,250 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 09:05:10,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:05:10,416 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:05:10,695 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:05:10,872 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:05:11,002 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:05:11,128 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:05:12,508 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:05:15,399 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:05:15,400 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 266 [2020-10-28 09:05:15,400 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-28 09:05:15,400 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5058 [2020-10-28 09:05:15,400 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:05:15,400 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:05:15,400 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 27 [2020-10-28 09:05:15,400 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 146 [2020-10-28 09:05:15,400 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 27 [2020-10-28 09:05:15,400 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:05:16,016 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 09:05:16,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:05:16,018 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:05:16,021 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:05:16,021 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 09:05:16,021 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:05:16,021 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 09:05:16,022 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:05:16,022 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:05:16,022 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:05:16,022 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:05:16,022 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:05:16,022 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:05:16,069 INFO L134 CoverageAnalysis]: Checked inductivity of 2925 backedges. 0 proven. 325 refuted. 0 times theorem prover too weak. 2600 trivial. 0 not checked. [2020-10-28 09:05:16,069 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [508829837] [2020-10-28 09:05:16,069 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 09:05:16,069 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [29] total 29 [2020-10-28 09:05:16,069 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1194393564] [2020-10-28 09:05:16,070 INFO L461 AbstractCegarLoop]: Interpolant automaton has 29 states [2020-10-28 09:05:16,070 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 09:05:16,071 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2020-10-28 09:05:16,071 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=380, Invalid=432, Unknown=0, NotChecked=0, Total=812 [2020-10-28 09:05:16,071 INFO L87 Difference]: Start difference. First operand 261 states and 270 transitions. Second operand 29 states. [2020-10-28 09:05:16,896 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 09:05:16,897 INFO L93 Difference]: Finished difference Result 499 states and 525 transitions. [2020-10-28 09:05:16,897 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-10-28 09:05:16,897 INFO L78 Accepts]: Start accepts. Automaton has 29 states. Word has length 256 [2020-10-28 09:05:16,897 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 09:05:16,899 INFO L225 Difference]: With dead ends: 499 [2020-10-28 09:05:16,899 INFO L226 Difference]: Without dead ends: 270 [2020-10-28 09:05:16,900 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=380, Invalid=432, Unknown=0, NotChecked=0, Total=812 [2020-10-28 09:05:16,900 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 270 states. [2020-10-28 09:05:16,910 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 270 to 270. [2020-10-28 09:05:16,910 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 270 states. [2020-10-28 09:05:16,911 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 270 states to 270 states and 279 transitions. [2020-10-28 09:05:16,911 INFO L78 Accepts]: Start accepts. Automaton has 270 states and 279 transitions. Word has length 256 [2020-10-28 09:05:16,912 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 09:05:16,912 INFO L481 AbstractCegarLoop]: Abstraction has 270 states and 279 transitions. [2020-10-28 09:05:16,912 INFO L482 AbstractCegarLoop]: Interpolant automaton has 29 states. [2020-10-28 09:05:16,912 INFO L276 IsEmpty]: Start isEmpty. Operand 270 states and 279 transitions. [2020-10-28 09:05:16,913 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 266 [2020-10-28 09:05:16,913 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 09:05:16,914 INFO L422 BasicCegarLoop]: trace histogram [26, 26, 26, 26, 26, 26, 26, 26, 26, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 09:05:16,914 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2020-10-28 09:05:16,914 INFO L429 AbstractCegarLoop]: === Iteration 28 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 09:05:16,914 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 09:05:16,915 INFO L82 PathProgramCache]: Analyzing trace with hash -1773988722, now seen corresponding path program 26 times [2020-10-28 09:05:16,915 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 09:05:16,915 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2030968753] [2020-10-28 09:05:16,915 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 09:05:17,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:05:17,058 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:05:17,270 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:05:17,461 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:05:17,603 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:05:17,738 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:05:19,217 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:05:22,042 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:05:22,042 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 275 [2020-10-28 09:05:22,042 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-28 09:05:22,042 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5040 [2020-10-28 09:05:22,042 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:05:22,043 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:05:22,043 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 28 [2020-10-28 09:05:22,043 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 95 [2020-10-28 09:05:22,043 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-10-28 09:05:22,043 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:05:22,735 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 09:05:22,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:05:22,741 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:05:22,743 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:05:22,744 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 09:05:22,744 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:05:22,744 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 09:05:22,744 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:05:22,744 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:05:22,744 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:05:22,744 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:05:22,744 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:05:22,745 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:05:22,796 INFO L134 CoverageAnalysis]: Checked inductivity of 3159 backedges. 0 proven. 351 refuted. 0 times theorem prover too weak. 2808 trivial. 0 not checked. [2020-10-28 09:05:22,796 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2030968753] [2020-10-28 09:05:22,797 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 09:05:22,797 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [30] total 30 [2020-10-28 09:05:22,797 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [114159615] [2020-10-28 09:05:22,797 INFO L461 AbstractCegarLoop]: Interpolant automaton has 30 states [2020-10-28 09:05:22,798 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 09:05:22,799 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2020-10-28 09:05:22,799 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=408, Invalid=462, Unknown=0, NotChecked=0, Total=870 [2020-10-28 09:05:22,800 INFO L87 Difference]: Start difference. First operand 270 states and 279 transitions. Second operand 30 states. [2020-10-28 09:05:23,636 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 09:05:23,636 INFO L93 Difference]: Finished difference Result 516 states and 542 transitions. [2020-10-28 09:05:23,637 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2020-10-28 09:05:23,637 INFO L78 Accepts]: Start accepts. Automaton has 30 states. Word has length 265 [2020-10-28 09:05:23,637 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 09:05:23,639 INFO L225 Difference]: With dead ends: 516 [2020-10-28 09:05:23,640 INFO L226 Difference]: Without dead ends: 279 [2020-10-28 09:05:23,641 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=408, Invalid=462, Unknown=0, NotChecked=0, Total=870 [2020-10-28 09:05:23,642 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 279 states. [2020-10-28 09:05:23,651 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 279 to 279. [2020-10-28 09:05:23,651 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 279 states. [2020-10-28 09:05:23,652 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 279 states to 279 states and 288 transitions. [2020-10-28 09:05:23,652 INFO L78 Accepts]: Start accepts. Automaton has 279 states and 288 transitions. Word has length 265 [2020-10-28 09:05:23,653 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 09:05:23,653 INFO L481 AbstractCegarLoop]: Abstraction has 279 states and 288 transitions. [2020-10-28 09:05:23,653 INFO L482 AbstractCegarLoop]: Interpolant automaton has 30 states. [2020-10-28 09:05:23,653 INFO L276 IsEmpty]: Start isEmpty. Operand 279 states and 288 transitions. [2020-10-28 09:05:23,654 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 275 [2020-10-28 09:05:23,654 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 09:05:23,655 INFO L422 BasicCegarLoop]: trace histogram [27, 27, 27, 27, 27, 27, 27, 27, 27, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 09:05:23,655 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2020-10-28 09:05:23,655 INFO L429 AbstractCegarLoop]: === Iteration 29 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 09:05:23,655 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 09:05:23,656 INFO L82 PathProgramCache]: Analyzing trace with hash 1579244292, now seen corresponding path program 27 times [2020-10-28 09:05:23,656 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 09:05:23,656 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1904083977] [2020-10-28 09:05:23,656 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 09:05:23,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:05:23,794 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:05:23,964 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:05:24,118 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:05:24,268 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:05:24,409 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:05:26,105 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:05:28,742 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:05:28,743 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 284 [2020-10-28 09:05:28,743 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-28 09:05:28,743 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-10-28 09:05:28,743 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:05:28,743 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:05:28,743 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 29 [2020-10-28 09:05:28,743 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 98 [2020-10-28 09:05:28,743 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 29 [2020-10-28 09:05:28,743 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:05:29,452 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 09:05:29,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:05:29,456 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:05:29,458 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:05:29,458 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 09:05:29,458 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:05:29,459 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 09:05:29,459 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:05:29,459 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:05:29,459 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:05:29,459 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:05:29,459 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:05:29,459 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:05:29,514 INFO L134 CoverageAnalysis]: Checked inductivity of 3402 backedges. 0 proven. 378 refuted. 0 times theorem prover too weak. 3024 trivial. 0 not checked. [2020-10-28 09:05:29,514 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1904083977] [2020-10-28 09:05:29,515 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 09:05:29,515 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [31] total 31 [2020-10-28 09:05:29,515 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [265717203] [2020-10-28 09:05:29,515 INFO L461 AbstractCegarLoop]: Interpolant automaton has 31 states [2020-10-28 09:05:29,515 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 09:05:29,517 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2020-10-28 09:05:29,518 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=437, Invalid=493, Unknown=0, NotChecked=0, Total=930 [2020-10-28 09:05:29,518 INFO L87 Difference]: Start difference. First operand 279 states and 288 transitions. Second operand 31 states. [2020-10-28 09:05:30,448 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 09:05:30,449 INFO L93 Difference]: Finished difference Result 533 states and 559 transitions. [2020-10-28 09:05:30,449 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2020-10-28 09:05:30,449 INFO L78 Accepts]: Start accepts. Automaton has 31 states. Word has length 274 [2020-10-28 09:05:30,450 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 09:05:30,452 INFO L225 Difference]: With dead ends: 533 [2020-10-28 09:05:30,452 INFO L226 Difference]: Without dead ends: 288 [2020-10-28 09:05:30,453 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=437, Invalid=493, Unknown=0, NotChecked=0, Total=930 [2020-10-28 09:05:30,454 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 288 states. [2020-10-28 09:05:30,463 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 288 to 288. [2020-10-28 09:05:30,463 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 288 states. [2020-10-28 09:05:30,464 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 288 states to 288 states and 297 transitions. [2020-10-28 09:05:30,464 INFO L78 Accepts]: Start accepts. Automaton has 288 states and 297 transitions. Word has length 274 [2020-10-28 09:05:30,464 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 09:05:30,465 INFO L481 AbstractCegarLoop]: Abstraction has 288 states and 297 transitions. [2020-10-28 09:05:30,465 INFO L482 AbstractCegarLoop]: Interpolant automaton has 31 states. [2020-10-28 09:05:30,465 INFO L276 IsEmpty]: Start isEmpty. Operand 288 states and 297 transitions. [2020-10-28 09:05:30,466 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 284 [2020-10-28 09:05:30,466 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 09:05:30,467 INFO L422 BasicCegarLoop]: trace histogram [28, 28, 28, 28, 28, 28, 28, 28, 28, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 09:05:30,467 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2020-10-28 09:05:30,467 INFO L429 AbstractCegarLoop]: === Iteration 30 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 09:05:30,467 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 09:05:30,468 INFO L82 PathProgramCache]: Analyzing trace with hash 99101006, now seen corresponding path program 28 times [2020-10-28 09:05:30,468 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 09:05:30,468 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1308104369] [2020-10-28 09:05:30,468 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 09:05:30,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:05:30,650 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:05:30,837 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:05:30,999 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:05:31,155 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:05:31,295 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:05:32,877 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:05:35,593 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:05:35,593 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 293 [2020-10-28 09:05:35,593 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-28 09:05:35,593 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5023 [2020-10-28 09:05:35,593 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:05:35,593 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:05:35,593 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 30 [2020-10-28 09:05:35,593 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 71 [2020-10-28 09:05:35,593 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-10-28 09:05:35,594 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:05:36,324 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 09:05:36,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:05:36,328 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:05:36,330 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:05:36,330 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 09:05:36,330 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:05:36,330 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 09:05:36,330 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:05:36,330 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:05:36,330 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:05:36,331 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:05:36,331 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:05:36,331 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:05:36,367 INFO L134 CoverageAnalysis]: Checked inductivity of 3654 backedges. 0 proven. 406 refuted. 0 times theorem prover too weak. 3248 trivial. 0 not checked. [2020-10-28 09:05:36,368 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1308104369] [2020-10-28 09:05:36,368 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 09:05:36,368 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [32] total 32 [2020-10-28 09:05:36,368 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [611299675] [2020-10-28 09:05:36,368 INFO L461 AbstractCegarLoop]: Interpolant automaton has 32 states [2020-10-28 09:05:36,369 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 09:05:36,369 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2020-10-28 09:05:36,369 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=467, Invalid=525, Unknown=0, NotChecked=0, Total=992 [2020-10-28 09:05:36,370 INFO L87 Difference]: Start difference. First operand 288 states and 297 transitions. Second operand 32 states. [2020-10-28 09:05:37,288 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 09:05:37,288 INFO L93 Difference]: Finished difference Result 550 states and 576 transitions. [2020-10-28 09:05:37,288 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2020-10-28 09:05:37,289 INFO L78 Accepts]: Start accepts. Automaton has 32 states. Word has length 283 [2020-10-28 09:05:37,289 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 09:05:37,290 INFO L225 Difference]: With dead ends: 550 [2020-10-28 09:05:37,291 INFO L226 Difference]: Without dead ends: 297 [2020-10-28 09:05:37,292 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=467, Invalid=525, Unknown=0, NotChecked=0, Total=992 [2020-10-28 09:05:37,292 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 297 states. [2020-10-28 09:05:37,300 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 297 to 297. [2020-10-28 09:05:37,301 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 297 states. [2020-10-28 09:05:37,302 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 297 states to 297 states and 306 transitions. [2020-10-28 09:05:37,302 INFO L78 Accepts]: Start accepts. Automaton has 297 states and 306 transitions. Word has length 283 [2020-10-28 09:05:37,302 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 09:05:37,302 INFO L481 AbstractCegarLoop]: Abstraction has 297 states and 306 transitions. [2020-10-28 09:05:37,302 INFO L482 AbstractCegarLoop]: Interpolant automaton has 32 states. [2020-10-28 09:05:37,302 INFO L276 IsEmpty]: Start isEmpty. Operand 297 states and 306 transitions. [2020-10-28 09:05:37,304 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 293 [2020-10-28 09:05:37,304 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 09:05:37,304 INFO L422 BasicCegarLoop]: trace histogram [29, 29, 29, 29, 29, 29, 29, 29, 29, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 09:05:37,304 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2020-10-28 09:05:37,305 INFO L429 AbstractCegarLoop]: === Iteration 31 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 09:05:37,305 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 09:05:37,305 INFO L82 PathProgramCache]: Analyzing trace with hash -1645446844, now seen corresponding path program 29 times [2020-10-28 09:05:37,305 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 09:05:37,305 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1753793592] [2020-10-28 09:05:37,306 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 09:05:37,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:05:37,442 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:05:37,631 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:05:37,804 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:05:37,973 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:05:38,130 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:05:39,921 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:05:42,420 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:05:42,420 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 302 [2020-10-28 09:05:42,420 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-28 09:05:42,420 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5032 [2020-10-28 09:05:42,420 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:05:42,420 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:05:42,420 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 31 [2020-10-28 09:05:42,420 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 73 [2020-10-28 09:05:42,420 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 31 [2020-10-28 09:05:42,421 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:05:43,188 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 09:05:43,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:05:43,191 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:05:43,192 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:05:43,193 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 09:05:43,193 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:05:43,193 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-28 09:05:43,193 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:05:43,193 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:05:43,193 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:05:43,193 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:05:43,193 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:05:43,193 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:05:43,236 INFO L134 CoverageAnalysis]: Checked inductivity of 3915 backedges. 0 proven. 435 refuted. 0 times theorem prover too weak. 3480 trivial. 0 not checked. [2020-10-28 09:05:43,237 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1753793592] [2020-10-28 09:05:43,237 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 09:05:43,237 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [33] total 33 [2020-10-28 09:05:43,237 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1809587775] [2020-10-28 09:05:43,237 INFO L461 AbstractCegarLoop]: Interpolant automaton has 33 states [2020-10-28 09:05:43,237 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 09:05:43,238 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2020-10-28 09:05:43,238 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=498, Invalid=558, Unknown=0, NotChecked=0, Total=1056 [2020-10-28 09:05:43,238 INFO L87 Difference]: Start difference. First operand 297 states and 306 transitions. Second operand 33 states. [2020-10-28 09:05:44,267 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 09:05:44,267 INFO L93 Difference]: Finished difference Result 567 states and 593 transitions. [2020-10-28 09:05:44,268 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2020-10-28 09:05:44,268 INFO L78 Accepts]: Start accepts. Automaton has 33 states. Word has length 292 [2020-10-28 09:05:44,268 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 09:05:44,270 INFO L225 Difference]: With dead ends: 567 [2020-10-28 09:05:44,270 INFO L226 Difference]: Without dead ends: 306 [2020-10-28 09:05:44,272 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 29 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=498, Invalid=558, Unknown=0, NotChecked=0, Total=1056 [2020-10-28 09:05:44,272 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 306 states. [2020-10-28 09:05:44,280 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 306 to 306. [2020-10-28 09:05:44,281 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 306 states. [2020-10-28 09:05:44,282 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 306 states to 306 states and 315 transitions. [2020-10-28 09:05:44,282 INFO L78 Accepts]: Start accepts. Automaton has 306 states and 315 transitions. Word has length 292 [2020-10-28 09:05:44,282 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 09:05:44,282 INFO L481 AbstractCegarLoop]: Abstraction has 306 states and 315 transitions. [2020-10-28 09:05:44,282 INFO L482 AbstractCegarLoop]: Interpolant automaton has 33 states. [2020-10-28 09:05:44,282 INFO L276 IsEmpty]: Start isEmpty. Operand 306 states and 315 transitions. [2020-10-28 09:05:44,284 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 302 [2020-10-28 09:05:44,284 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 09:05:44,285 INFO L422 BasicCegarLoop]: trace histogram [30, 30, 30, 30, 30, 30, 30, 30, 30, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 09:05:44,285 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2020-10-28 09:05:44,285 INFO L429 AbstractCegarLoop]: === Iteration 32 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 09:05:44,285 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 09:05:44,285 INFO L82 PathProgramCache]: Analyzing trace with hash -1415983602, now seen corresponding path program 30 times [2020-10-28 09:05:44,286 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 09:05:44,286 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [136768199] [2020-10-28 09:05:44,286 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 09:05:44,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:05:44,490 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:05:44,803 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:05:44,999 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:05:45,178 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:05:45,345 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:05:47,341 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:05:49,396 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:05:49,396 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 311 [2020-10-28 09:05:49,396 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-28 09:05:49,396 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-10-28 09:05:49,396 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:05:49,396 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:05:49,397 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 32 [2020-10-28 09:05:49,397 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 107 [2020-10-28 09:05:49,397 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 32 [2020-10-28 09:05:49,397 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:05:50,212 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 09:05:50,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:05:50,215 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:05:50,217 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:05:50,217 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 09:05:50,218 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:05:50,218 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 09:05:50,218 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:05:50,218 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:05:50,218 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:05:50,218 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:05:50,218 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:05:50,218 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:05:50,259 INFO L134 CoverageAnalysis]: Checked inductivity of 4185 backedges. 0 proven. 465 refuted. 0 times theorem prover too weak. 3720 trivial. 0 not checked. [2020-10-28 09:05:50,259 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [136768199] [2020-10-28 09:05:50,259 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 09:05:50,259 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [34] total 34 [2020-10-28 09:05:50,259 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1863456156] [2020-10-28 09:05:50,260 INFO L461 AbstractCegarLoop]: Interpolant automaton has 34 states [2020-10-28 09:05:50,260 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 09:05:50,260 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2020-10-28 09:05:50,261 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=530, Invalid=592, Unknown=0, NotChecked=0, Total=1122 [2020-10-28 09:05:50,261 INFO L87 Difference]: Start difference. First operand 306 states and 315 transitions. Second operand 34 states. [2020-10-28 09:05:51,291 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 09:05:51,291 INFO L93 Difference]: Finished difference Result 584 states and 610 transitions. [2020-10-28 09:05:51,291 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2020-10-28 09:05:51,292 INFO L78 Accepts]: Start accepts. Automaton has 34 states. Word has length 301 [2020-10-28 09:05:51,292 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 09:05:51,294 INFO L225 Difference]: With dead ends: 584 [2020-10-28 09:05:51,294 INFO L226 Difference]: Without dead ends: 315 [2020-10-28 09:05:51,295 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=530, Invalid=592, Unknown=0, NotChecked=0, Total=1122 [2020-10-28 09:05:51,296 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 315 states. [2020-10-28 09:05:51,304 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 315 to 315. [2020-10-28 09:05:51,304 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 315 states. [2020-10-28 09:05:51,306 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 315 states to 315 states and 324 transitions. [2020-10-28 09:05:51,306 INFO L78 Accepts]: Start accepts. Automaton has 315 states and 324 transitions. Word has length 301 [2020-10-28 09:05:51,306 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 09:05:51,306 INFO L481 AbstractCegarLoop]: Abstraction has 315 states and 324 transitions. [2020-10-28 09:05:51,306 INFO L482 AbstractCegarLoop]: Interpolant automaton has 34 states. [2020-10-28 09:05:51,307 INFO L276 IsEmpty]: Start isEmpty. Operand 315 states and 324 transitions. [2020-10-28 09:05:51,308 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 311 [2020-10-28 09:05:51,308 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 09:05:51,309 INFO L422 BasicCegarLoop]: trace histogram [31, 31, 31, 31, 31, 31, 31, 31, 31, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 09:05:51,309 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2020-10-28 09:05:51,309 INFO L429 AbstractCegarLoop]: === Iteration 33 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 09:05:51,309 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 09:05:51,310 INFO L82 PathProgramCache]: Analyzing trace with hash 1680902020, now seen corresponding path program 31 times [2020-10-28 09:05:51,310 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 09:05:51,310 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1445136498] [2020-10-28 09:05:51,310 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 09:05:51,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:05:51,492 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:05:51,770 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:05:51,976 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:05:52,172 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:05:52,361 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:05:54,709 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:05:56,427 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:05:56,428 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 320 [2020-10-28 09:05:56,428 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-28 09:05:56,428 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5008 [2020-10-28 09:05:56,428 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:05:56,428 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:05:56,428 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 33 [2020-10-28 09:05:56,428 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 44 [2020-10-28 09:05:56,428 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 33 [2020-10-28 09:05:56,428 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:05:57,254 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 09:05:57,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:05:57,257 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:05:57,258 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:05:57,258 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 09:05:57,258 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:05:57,258 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-28 09:05:57,258 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:05:57,259 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:05:57,259 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:05:57,259 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:05:57,259 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:05:57,259 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:05:57,300 INFO L134 CoverageAnalysis]: Checked inductivity of 4464 backedges. 0 proven. 496 refuted. 0 times theorem prover too weak. 3968 trivial. 0 not checked. [2020-10-28 09:05:57,301 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1445136498] [2020-10-28 09:05:57,301 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 09:05:57,301 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [35] total 35 [2020-10-28 09:05:57,301 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [619944485] [2020-10-28 09:05:57,301 INFO L461 AbstractCegarLoop]: Interpolant automaton has 35 states [2020-10-28 09:05:57,301 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 09:05:57,302 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2020-10-28 09:05:57,302 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=563, Invalid=627, Unknown=0, NotChecked=0, Total=1190 [2020-10-28 09:05:57,302 INFO L87 Difference]: Start difference. First operand 315 states and 324 transitions. Second operand 35 states. [2020-10-28 09:05:58,392 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 09:05:58,392 INFO L93 Difference]: Finished difference Result 601 states and 627 transitions. [2020-10-28 09:05:58,393 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2020-10-28 09:05:58,393 INFO L78 Accepts]: Start accepts. Automaton has 35 states. Word has length 310 [2020-10-28 09:05:58,393 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 09:05:58,395 INFO L225 Difference]: With dead ends: 601 [2020-10-28 09:05:58,395 INFO L226 Difference]: Without dead ends: 324 [2020-10-28 09:05:58,397 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=563, Invalid=627, Unknown=0, NotChecked=0, Total=1190 [2020-10-28 09:05:58,398 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 324 states. [2020-10-28 09:05:58,407 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 324 to 324. [2020-10-28 09:05:58,407 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 324 states. [2020-10-28 09:05:58,408 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 324 states to 324 states and 333 transitions. [2020-10-28 09:05:58,408 INFO L78 Accepts]: Start accepts. Automaton has 324 states and 333 transitions. Word has length 310 [2020-10-28 09:05:58,408 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 09:05:58,409 INFO L481 AbstractCegarLoop]: Abstraction has 324 states and 333 transitions. [2020-10-28 09:05:58,409 INFO L482 AbstractCegarLoop]: Interpolant automaton has 35 states. [2020-10-28 09:05:58,409 INFO L276 IsEmpty]: Start isEmpty. Operand 324 states and 333 transitions. [2020-10-28 09:05:58,410 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 320 [2020-10-28 09:05:58,411 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 09:05:58,411 INFO L422 BasicCegarLoop]: trace histogram [32, 32, 32, 32, 32, 32, 32, 32, 32, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 09:05:58,411 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2020-10-28 09:05:58,411 INFO L429 AbstractCegarLoop]: === Iteration 34 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 09:05:58,411 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 09:05:58,412 INFO L82 PathProgramCache]: Analyzing trace with hash -158596402, now seen corresponding path program 32 times [2020-10-28 09:05:58,412 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 09:05:58,412 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [352383069] [2020-10-28 09:05:58,412 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 09:05:58,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:05:58,583 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:05:58,803 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:05:59,022 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:05:59,230 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:05:59,434 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:06:02,286 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:06:03,544 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:06:03,544 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 329 [2020-10-28 09:06:03,544 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-28 09:06:03,544 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5024 [2020-10-28 09:06:03,544 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:06:03,544 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:06:03,544 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 34 [2020-10-28 09:06:03,544 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 45 [2020-10-28 09:06:03,544 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 34 [2020-10-28 09:06:03,545 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:06:04,459 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 09:06:04,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:06:04,461 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:06:04,463 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:06:04,463 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 09:06:04,463 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:06:04,464 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 09:06:04,464 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:06:04,464 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:06:04,464 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:06:04,464 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:06:04,464 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:06:04,464 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:06:04,508 INFO L134 CoverageAnalysis]: Checked inductivity of 4752 backedges. 0 proven. 528 refuted. 0 times theorem prover too weak. 4224 trivial. 0 not checked. [2020-10-28 09:06:04,508 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [352383069] [2020-10-28 09:06:04,510 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 09:06:04,510 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [36] total 36 [2020-10-28 09:06:04,510 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [595068416] [2020-10-28 09:06:04,511 INFO L461 AbstractCegarLoop]: Interpolant automaton has 36 states [2020-10-28 09:06:04,512 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 09:06:04,512 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2020-10-28 09:06:04,513 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=597, Invalid=663, Unknown=0, NotChecked=0, Total=1260 [2020-10-28 09:06:04,513 INFO L87 Difference]: Start difference. First operand 324 states and 333 transitions. Second operand 36 states. [2020-10-28 09:06:05,483 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 09:06:05,484 INFO L93 Difference]: Finished difference Result 618 states and 644 transitions. [2020-10-28 09:06:05,484 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2020-10-28 09:06:05,484 INFO L78 Accepts]: Start accepts. Automaton has 36 states. Word has length 319 [2020-10-28 09:06:05,485 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 09:06:05,487 INFO L225 Difference]: With dead ends: 618 [2020-10-28 09:06:05,487 INFO L226 Difference]: Without dead ends: 333 [2020-10-28 09:06:05,488 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=597, Invalid=663, Unknown=0, NotChecked=0, Total=1260 [2020-10-28 09:06:05,489 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 333 states. [2020-10-28 09:06:05,498 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 333 to 333. [2020-10-28 09:06:05,498 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 333 states. [2020-10-28 09:06:05,499 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 333 states to 333 states and 342 transitions. [2020-10-28 09:06:05,499 INFO L78 Accepts]: Start accepts. Automaton has 333 states and 342 transitions. Word has length 319 [2020-10-28 09:06:05,500 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 09:06:05,500 INFO L481 AbstractCegarLoop]: Abstraction has 333 states and 342 transitions. [2020-10-28 09:06:05,500 INFO L482 AbstractCegarLoop]: Interpolant automaton has 36 states. [2020-10-28 09:06:05,500 INFO L276 IsEmpty]: Start isEmpty. Operand 333 states and 342 transitions. [2020-10-28 09:06:05,502 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 329 [2020-10-28 09:06:05,502 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 09:06:05,502 INFO L422 BasicCegarLoop]: trace histogram [33, 33, 33, 33, 33, 33, 33, 33, 33, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 09:06:05,502 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2020-10-28 09:06:05,503 INFO L429 AbstractCegarLoop]: === Iteration 35 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 09:06:05,503 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 09:06:05,503 INFO L82 PathProgramCache]: Analyzing trace with hash 1119454660, now seen corresponding path program 33 times [2020-10-28 09:06:05,503 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 09:06:05,503 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1978765722] [2020-10-28 09:06:05,503 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 09:06:05,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:06:05,674 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:06:05,981 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:06:06,207 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:06:06,420 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:06:06,632 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:06:09,776 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:06:10,622 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:06:10,623 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 338 [2020-10-28 09:06:10,623 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-28 09:06:10,623 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5017 [2020-10-28 09:06:10,623 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:06:10,623 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:06:10,623 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 35 [2020-10-28 09:06:10,623 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 186 [2020-10-28 09:06:10,623 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 35 [2020-10-28 09:06:10,623 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:06:11,642 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 09:06:11,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:06:11,647 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:06:11,648 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:06:11,648 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 09:06:11,648 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:06:11,648 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-28 09:06:11,648 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:06:11,648 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:06:11,649 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:06:11,649 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:06:11,649 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:06:11,649 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:06:11,696 INFO L134 CoverageAnalysis]: Checked inductivity of 5049 backedges. 0 proven. 561 refuted. 0 times theorem prover too weak. 4488 trivial. 0 not checked. [2020-10-28 09:06:11,696 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1978765722] [2020-10-28 09:06:11,696 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 09:06:11,696 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [37] total 37 [2020-10-28 09:06:11,697 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1859721356] [2020-10-28 09:06:11,697 INFO L461 AbstractCegarLoop]: Interpolant automaton has 37 states [2020-10-28 09:06:11,697 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 09:06:11,698 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2020-10-28 09:06:11,698 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=632, Invalid=700, Unknown=0, NotChecked=0, Total=1332 [2020-10-28 09:06:11,698 INFO L87 Difference]: Start difference. First operand 333 states and 342 transitions. Second operand 37 states. [2020-10-28 09:06:12,841 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 09:06:12,841 INFO L93 Difference]: Finished difference Result 635 states and 661 transitions. [2020-10-28 09:06:12,842 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2020-10-28 09:06:12,842 INFO L78 Accepts]: Start accepts. Automaton has 37 states. Word has length 328 [2020-10-28 09:06:12,842 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 09:06:12,844 INFO L225 Difference]: With dead ends: 635 [2020-10-28 09:06:12,844 INFO L226 Difference]: Without dead ends: 342 [2020-10-28 09:06:12,846 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 33 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=632, Invalid=700, Unknown=0, NotChecked=0, Total=1332 [2020-10-28 09:06:12,847 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 342 states. [2020-10-28 09:06:12,855 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 342 to 342. [2020-10-28 09:06:12,856 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 342 states. [2020-10-28 09:06:12,857 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 342 states to 342 states and 351 transitions. [2020-10-28 09:06:12,857 INFO L78 Accepts]: Start accepts. Automaton has 342 states and 351 transitions. Word has length 328 [2020-10-28 09:06:12,857 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 09:06:12,857 INFO L481 AbstractCegarLoop]: Abstraction has 342 states and 351 transitions. [2020-10-28 09:06:12,857 INFO L482 AbstractCegarLoop]: Interpolant automaton has 37 states. [2020-10-28 09:06:12,857 INFO L276 IsEmpty]: Start isEmpty. Operand 342 states and 351 transitions. [2020-10-28 09:06:12,860 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 338 [2020-10-28 09:06:12,860 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 09:06:12,860 INFO L422 BasicCegarLoop]: trace histogram [34, 34, 34, 34, 34, 34, 34, 34, 34, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 09:06:12,860 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2020-10-28 09:06:12,860 INFO L429 AbstractCegarLoop]: === Iteration 36 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 09:06:12,861 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 09:06:12,861 INFO L82 PathProgramCache]: Analyzing trace with hash 1794295694, now seen corresponding path program 34 times [2020-10-28 09:06:12,861 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 09:06:12,861 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1406535241] [2020-10-28 09:06:12,861 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 09:06:12,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:06:13,056 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:06:13,308 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:06:13,537 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:06:13,766 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:06:13,984 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:06:17,140 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:06:17,998 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:06:17,999 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 347 [2020-10-28 09:06:17,999 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-28 09:06:17,999 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5034 [2020-10-28 09:06:17,999 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:06:17,999 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:06:17,999 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 36 [2020-10-28 09:06:17,999 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 47 [2020-10-28 09:06:17,999 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 36 [2020-10-28 09:06:17,999 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:06:19,011 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 09:06:19,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:06:19,014 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:06:19,016 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:06:19,016 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 09:06:19,016 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:06:19,016 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 09:06:19,016 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:06:19,016 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:06:19,016 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:06:19,016 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:06:19,016 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:06:19,016 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:06:19,064 INFO L134 CoverageAnalysis]: Checked inductivity of 5355 backedges. 0 proven. 595 refuted. 0 times theorem prover too weak. 4760 trivial. 0 not checked. [2020-10-28 09:06:19,064 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1406535241] [2020-10-28 09:06:19,064 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 09:06:19,064 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [38] total 38 [2020-10-28 09:06:19,065 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [32458534] [2020-10-28 09:06:19,065 INFO L461 AbstractCegarLoop]: Interpolant automaton has 38 states [2020-10-28 09:06:19,065 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 09:06:19,066 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2020-10-28 09:06:19,066 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=668, Invalid=738, Unknown=0, NotChecked=0, Total=1406 [2020-10-28 09:06:19,066 INFO L87 Difference]: Start difference. First operand 342 states and 351 transitions. Second operand 38 states. [2020-10-28 09:06:20,094 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 09:06:20,094 INFO L93 Difference]: Finished difference Result 652 states and 678 transitions. [2020-10-28 09:06:20,095 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2020-10-28 09:06:20,095 INFO L78 Accepts]: Start accepts. Automaton has 38 states. Word has length 337 [2020-10-28 09:06:20,095 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 09:06:20,097 INFO L225 Difference]: With dead ends: 652 [2020-10-28 09:06:20,097 INFO L226 Difference]: Without dead ends: 351 [2020-10-28 09:06:20,099 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=668, Invalid=738, Unknown=0, NotChecked=0, Total=1406 [2020-10-28 09:06:20,100 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 351 states. [2020-10-28 09:06:20,109 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 351 to 351. [2020-10-28 09:06:20,109 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 351 states. [2020-10-28 09:06:20,111 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 351 states to 351 states and 360 transitions. [2020-10-28 09:06:20,111 INFO L78 Accepts]: Start accepts. Automaton has 351 states and 360 transitions. Word has length 337 [2020-10-28 09:06:20,111 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 09:06:20,111 INFO L481 AbstractCegarLoop]: Abstraction has 351 states and 360 transitions. [2020-10-28 09:06:20,111 INFO L482 AbstractCegarLoop]: Interpolant automaton has 38 states. [2020-10-28 09:06:20,111 INFO L276 IsEmpty]: Start isEmpty. Operand 351 states and 360 transitions. [2020-10-28 09:06:20,113 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 347 [2020-10-28 09:06:20,114 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 09:06:20,114 INFO L422 BasicCegarLoop]: trace histogram [35, 35, 35, 35, 35, 35, 35, 35, 35, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 09:06:20,114 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2020-10-28 09:06:20,114 INFO L429 AbstractCegarLoop]: === Iteration 37 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 09:06:20,114 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 09:06:20,115 INFO L82 PathProgramCache]: Analyzing trace with hash 911438852, now seen corresponding path program 35 times [2020-10-28 09:06:20,115 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 09:06:20,115 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2028063601] [2020-10-28 09:06:20,115 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 09:06:20,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:06:20,295 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:06:20,560 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:06:20,886 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:06:21,134 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:06:21,362 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:06:24,767 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:06:25,243 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:06:25,244 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 356 [2020-10-28 09:06:25,244 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-28 09:06:25,244 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5022 [2020-10-28 09:06:25,244 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:06:25,244 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:06:25,244 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 37 [2020-10-28 09:06:25,244 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-28 09:06:25,244 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 37 [2020-10-28 09:06:25,244 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:06:26,344 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 09:06:26,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:06:26,348 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:06:26,349 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:06:26,349 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 09:06:26,350 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:06:26,350 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 09:06:26,350 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:06:26,350 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:06:26,350 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:06:26,350 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:06:26,350 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:06:26,350 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:06:26,449 INFO L134 CoverageAnalysis]: Checked inductivity of 5670 backedges. 0 proven. 630 refuted. 0 times theorem prover too weak. 5040 trivial. 0 not checked. [2020-10-28 09:06:26,449 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2028063601] [2020-10-28 09:06:26,450 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 09:06:26,450 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [39] total 39 [2020-10-28 09:06:26,450 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1443936657] [2020-10-28 09:06:26,450 INFO L461 AbstractCegarLoop]: Interpolant automaton has 39 states [2020-10-28 09:06:26,451 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 09:06:26,451 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 39 interpolants. [2020-10-28 09:06:26,452 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=705, Invalid=777, Unknown=0, NotChecked=0, Total=1482 [2020-10-28 09:06:26,452 INFO L87 Difference]: Start difference. First operand 351 states and 360 transitions. Second operand 39 states. [2020-10-28 09:06:27,552 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 09:06:27,552 INFO L93 Difference]: Finished difference Result 669 states and 695 transitions. [2020-10-28 09:06:27,553 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2020-10-28 09:06:27,553 INFO L78 Accepts]: Start accepts. Automaton has 39 states. Word has length 346 [2020-10-28 09:06:27,553 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 09:06:27,556 INFO L225 Difference]: With dead ends: 669 [2020-10-28 09:06:27,556 INFO L226 Difference]: Without dead ends: 360 [2020-10-28 09:06:27,557 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 35 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=705, Invalid=777, Unknown=0, NotChecked=0, Total=1482 [2020-10-28 09:06:27,558 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 360 states. [2020-10-28 09:06:27,566 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 360 to 360. [2020-10-28 09:06:27,566 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 360 states. [2020-10-28 09:06:27,567 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 360 states to 360 states and 369 transitions. [2020-10-28 09:06:27,567 INFO L78 Accepts]: Start accepts. Automaton has 360 states and 369 transitions. Word has length 346 [2020-10-28 09:06:27,568 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 09:06:27,568 INFO L481 AbstractCegarLoop]: Abstraction has 360 states and 369 transitions. [2020-10-28 09:06:27,568 INFO L482 AbstractCegarLoop]: Interpolant automaton has 39 states. [2020-10-28 09:06:27,568 INFO L276 IsEmpty]: Start isEmpty. Operand 360 states and 369 transitions. [2020-10-28 09:06:27,570 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 356 [2020-10-28 09:06:27,570 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 09:06:27,571 INFO L422 BasicCegarLoop]: trace histogram [36, 36, 36, 36, 36, 36, 36, 36, 36, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 09:06:27,571 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2020-10-28 09:06:27,571 INFO L429 AbstractCegarLoop]: === Iteration 38 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 09:06:27,571 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 09:06:27,571 INFO L82 PathProgramCache]: Analyzing trace with hash -503178162, now seen corresponding path program 36 times [2020-10-28 09:06:27,572 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 09:06:27,572 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2145878782] [2020-10-28 09:06:27,572 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 09:06:27,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:06:27,728 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:06:28,026 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:06:28,307 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:06:28,561 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:06:28,817 FATAL L256 erpolLogProxyWrapper]: Now shrinking...