/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SequenceOfStatements --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=DEEPEST --traceabstraction.additional.smt.options log-additional-information=true --traceabstraction.additional.smt.options unknown-allowed=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf language data_model -i ../../../trunk/examples/svcomp/array-tiling/mbpr2.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-27 14:52:09,493 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-27 14:52:09,496 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-27 14:52:09,530 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-27 14:52:09,530 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-27 14:52:09,532 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-27 14:52:09,533 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-27 14:52:09,536 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-27 14:52:09,538 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-27 14:52:09,539 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-27 14:52:09,540 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-27 14:52:09,542 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-27 14:52:09,542 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-27 14:52:09,543 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-27 14:52:09,545 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-27 14:52:09,546 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-27 14:52:09,547 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-27 14:52:09,548 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-27 14:52:09,550 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-27 14:52:09,552 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-27 14:52:09,554 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-27 14:52:09,557 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-27 14:52:09,559 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-27 14:52:09,560 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-27 14:52:09,563 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-27 14:52:09,563 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-27 14:52:09,564 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-27 14:52:09,565 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-27 14:52:09,565 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-27 14:52:09,567 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-27 14:52:09,567 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-27 14:52:09,568 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-27 14:52:09,569 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-27 14:52:09,570 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-27 14:52:09,571 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-27 14:52:09,572 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-27 14:52:09,573 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-27 14:52:09,573 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-27 14:52:09,573 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-27 14:52:09,575 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-27 14:52:09,576 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-27 14:52:09,577 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-27 14:52:09,620 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-27 14:52:09,620 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-27 14:52:09,621 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-27 14:52:09,622 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-27 14:52:09,622 INFO L138 SettingsManager]: * Use SBE=true [2020-10-27 14:52:09,622 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-27 14:52:09,622 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-27 14:52:09,622 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-27 14:52:09,623 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-27 14:52:09,623 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-27 14:52:09,623 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-27 14:52:09,623 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-27 14:52:09,623 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-27 14:52:09,624 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-27 14:52:09,624 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-27 14:52:09,624 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-27 14:52:09,624 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-27 14:52:09,624 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-27 14:52:09,625 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-27 14:52:09,625 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-27 14:52:09,625 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-27 14:52:09,625 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-27 14:52:09,625 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-27 14:52:09,626 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-27 14:52:09,626 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-27 14:52:09,626 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-27 14:52:09,626 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-27 14:52:09,626 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-27 14:52:09,627 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-27 14:52:09,627 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=DEEPEST;log-additional-information=true;unknown-allowed=true; [2020-10-27 14:52:09,975 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-27 14:52:10,012 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-27 14:52:10,017 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-27 14:52:10,019 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-27 14:52:10,019 INFO L275 PluginConnector]: CDTParser initialized [2020-10-27 14:52:10,020 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/array-tiling/mbpr2.c [2020-10-27 14:52:10,110 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/928666fca/c2babedf6cc54d848ecb9b5600fc4f6b/FLAG372838c04 [2020-10-27 14:52:10,690 INFO L306 CDTParser]: Found 1 translation units. [2020-10-27 14:52:10,691 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/array-tiling/mbpr2.c [2020-10-27 14:52:10,699 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/928666fca/c2babedf6cc54d848ecb9b5600fc4f6b/FLAG372838c04 [2020-10-27 14:52:11,075 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/928666fca/c2babedf6cc54d848ecb9b5600fc4f6b [2020-10-27 14:52:11,080 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-27 14:52:11,090 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-27 14:52:11,093 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-27 14:52:11,094 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-27 14:52:11,098 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-27 14:52:11,099 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 02:52:11" (1/1) ... [2020-10-27 14:52:11,104 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5a75c662 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 02:52:11, skipping insertion in model container [2020-10-27 14:52:11,104 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 02:52:11" (1/1) ... [2020-10-27 14:52:11,112 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-27 14:52:11,134 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-27 14:52:11,302 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-27 14:52:11,311 INFO L203 MainTranslator]: Completed pre-run [2020-10-27 14:52:11,337 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-27 14:52:11,354 INFO L208 MainTranslator]: Completed translation [2020-10-27 14:52:11,355 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 02:52:11 WrapperNode [2020-10-27 14:52:11,355 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-27 14:52:11,356 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-27 14:52:11,356 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-27 14:52:11,356 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-27 14:52:11,368 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 02:52:11" (1/1) ... [2020-10-27 14:52:11,368 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 02:52:11" (1/1) ... [2020-10-27 14:52:11,377 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 02:52:11" (1/1) ... [2020-10-27 14:52:11,377 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 02:52:11" (1/1) ... [2020-10-27 14:52:11,386 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 02:52:11" (1/1) ... [2020-10-27 14:52:11,392 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 02:52:11" (1/1) ... [2020-10-27 14:52:11,394 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 02:52:11" (1/1) ... [2020-10-27 14:52:11,396 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-27 14:52:11,397 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-27 14:52:11,398 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-27 14:52:11,398 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-27 14:52:11,399 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 02:52:11" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-27 14:52:11,478 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-27 14:52:11,478 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-27 14:52:11,479 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-27 14:52:11,479 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-10-27 14:52:11,479 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-10-27 14:52:11,479 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-27 14:52:11,479 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-27 14:52:11,479 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-27 14:52:11,480 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-27 14:52:11,480 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-27 14:52:11,480 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-10-27 14:52:11,480 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-10-27 14:52:11,480 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-27 14:52:11,481 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-27 14:52:11,481 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-27 14:52:11,481 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-27 14:52:11,481 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-27 14:52:11,481 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-27 14:52:11,482 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-27 14:52:11,482 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-27 14:52:11,836 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-27 14:52:11,836 INFO L298 CfgBuilder]: Removed 3 assume(true) statements. [2020-10-27 14:52:11,838 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 02:52:11 BoogieIcfgContainer [2020-10-27 14:52:11,838 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-27 14:52:11,840 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-27 14:52:11,841 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-27 14:52:11,845 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-27 14:52:11,845 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.10 02:52:11" (1/3) ... [2020-10-27 14:52:11,846 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5a3e7c5a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 02:52:11, skipping insertion in model container [2020-10-27 14:52:11,846 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 02:52:11" (2/3) ... [2020-10-27 14:52:11,847 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5a3e7c5a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 02:52:11, skipping insertion in model container [2020-10-27 14:52:11,847 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 02:52:11" (3/3) ... [2020-10-27 14:52:11,849 INFO L111 eAbstractionObserver]: Analyzing ICFG mbpr2.c [2020-10-27 14:52:11,878 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-27 14:52:11,889 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-27 14:52:11,919 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-27 14:52:11,964 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-27 14:52:11,964 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-27 14:52:11,964 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-27 14:52:11,965 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-27 14:52:11,965 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-27 14:52:11,965 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-27 14:52:11,965 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-27 14:52:11,965 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-27 14:52:11,985 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states. [2020-10-27 14:52:11,993 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-10-27 14:52:11,993 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 14:52:11,994 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] [2020-10-27 14:52:11,995 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 14:52:12,001 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 14:52:12,001 INFO L82 PathProgramCache]: Analyzing trace with hash -1752745616, now seen corresponding path program 1 times [2020-10-27 14:52:12,013 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 14:52:12,013 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [460948205] [2020-10-27 14:52:12,014 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 14:52:12,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:52:12,207 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:52:12,272 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:52:12,312 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:52:12,468 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:52:12,771 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:52:12,772 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 37 [2020-10-27 14:52:12,772 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-27 14:52:12,772 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 599 [2020-10-27 14:52:12,776 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:52:12,776 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 14:52:12,777 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 27 [2020-10-27 14:52:12,777 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 14:52:12,777 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-10-27 14:52:12,925 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 14:52:12,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:52:12,933 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:52:12,939 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:52:12,940 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 14:52:12,940 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:52:12,940 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-27 14:52:12,940 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:52:12,940 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:52:12,941 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:52:12,941 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:52:12,941 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:52:12,947 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 14:52:12,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:52:12,950 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:52:12,951 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:52:12,960 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:52:12,961 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:52:12,961 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 14:52:12,961 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-27 14:52:12,961 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:52:12,962 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:52:12,962 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-10-27 14:52:12,962 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:52:12,962 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:52:12,969 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 14:52:12,970 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [460948205] [2020-10-27 14:52:12,973 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 14:52:12,973 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-27 14:52:12,974 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [21211923] [2020-10-27 14:52:12,982 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-27 14:52:12,982 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 14:52:12,999 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-27 14:52:13,000 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-27 14:52:13,002 INFO L87 Difference]: Start difference. First operand 45 states. Second operand 6 states. [2020-10-27 14:52:13,298 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 14:52:13,299 INFO L93 Difference]: Finished difference Result 82 states and 107 transitions. [2020-10-27 14:52:13,299 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-27 14:52:13,301 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 25 [2020-10-27 14:52:13,301 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 14:52:13,309 INFO L225 Difference]: With dead ends: 82 [2020-10-27 14:52:13,309 INFO L226 Difference]: Without dead ends: 42 [2020-10-27 14:52:13,312 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2020-10-27 14:52:13,332 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2020-10-27 14:52:13,356 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 41. [2020-10-27 14:52:13,357 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 41 states. [2020-10-27 14:52:13,358 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 46 transitions. [2020-10-27 14:52:13,360 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 46 transitions. Word has length 25 [2020-10-27 14:52:13,360 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 14:52:13,361 INFO L481 AbstractCegarLoop]: Abstraction has 41 states and 46 transitions. [2020-10-27 14:52:13,361 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-27 14:52:13,361 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 46 transitions. [2020-10-27 14:52:13,362 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-10-27 14:52:13,362 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 14:52:13,362 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] [2020-10-27 14:52:13,363 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-27 14:52:13,363 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 14:52:13,364 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 14:52:13,364 INFO L82 PathProgramCache]: Analyzing trace with hash 932251734, now seen corresponding path program 1 times [2020-10-27 14:52:13,364 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 14:52:13,365 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1663336314] [2020-10-27 14:52:13,365 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 14:52:13,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:52:13,415 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:52:13,478 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:52:13,562 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:52:13,588 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:52:13,843 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:52:13,908 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:52:14,727 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:52:14,728 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 37 [2020-10-27 14:52:14,729 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-27 14:52:14,729 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1328 [2020-10-27 14:52:14,730 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:52:14,730 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-27 14:52:14,733 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-27 14:52:14,734 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-27 14:52:14,734 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-10-27 14:52:14,941 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 14:52:14,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:52:14,949 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:52:14,960 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:52:14,960 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 14:52:14,964 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:52:14,964 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-27 14:52:14,964 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:52:14,965 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:52:14,965 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:52:14,965 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:52:14,965 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:52:14,968 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 14:52:14,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:52:14,980 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:52:14,995 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:52:14,996 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:52:14,996 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:52:14,996 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-27 14:52:14,996 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:52:14,996 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 14:52:14,997 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:52:14,997 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-27 14:52:14,997 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:52:15,070 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 14:52:15,072 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1663336314] [2020-10-27 14:52:15,072 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 14:52:15,073 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-10-27 14:52:15,073 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [865632753] [2020-10-27 14:52:15,075 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-27 14:52:15,075 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 14:52:15,077 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-27 14:52:15,078 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-10-27 14:52:15,078 INFO L87 Difference]: Start difference. First operand 41 states and 46 transitions. Second operand 9 states. [2020-10-27 14:52:15,618 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 14:52:15,618 INFO L93 Difference]: Finished difference Result 80 states and 95 transitions. [2020-10-27 14:52:15,619 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-27 14:52:15,619 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 25 [2020-10-27 14:52:15,619 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 14:52:15,623 INFO L225 Difference]: With dead ends: 80 [2020-10-27 14:52:15,623 INFO L226 Difference]: Without dead ends: 55 [2020-10-27 14:52:15,625 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=55, Invalid=155, Unknown=0, NotChecked=0, Total=210 [2020-10-27 14:52:15,625 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55 states. [2020-10-27 14:52:15,639 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55 to 43. [2020-10-27 14:52:15,639 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 43 states. [2020-10-27 14:52:15,640 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 48 transitions. [2020-10-27 14:52:15,640 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 48 transitions. Word has length 25 [2020-10-27 14:52:15,641 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 14:52:15,641 INFO L481 AbstractCegarLoop]: Abstraction has 43 states and 48 transitions. [2020-10-27 14:52:15,641 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-27 14:52:15,641 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 48 transitions. [2020-10-27 14:52:15,642 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2020-10-27 14:52:15,642 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 14:52:15,642 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] [2020-10-27 14:52:15,643 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-27 14:52:15,643 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 14:52:15,643 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 14:52:15,643 INFO L82 PathProgramCache]: Analyzing trace with hash 2096369546, now seen corresponding path program 1 times [2020-10-27 14:52:15,644 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 14:52:15,644 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1556552299] [2020-10-27 14:52:15,644 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 14:52:15,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:52:15,666 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:52:15,684 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:52:15,725 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:52:15,978 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:52:16,153 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:52:16,219 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:52:17,142 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:52:17,142 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 45 [2020-10-27 14:52:17,143 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-27 14:52:17,143 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1482 [2020-10-27 14:52:17,143 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:52:17,143 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 16 [2020-10-27 14:52:17,143 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 22 [2020-10-27 14:52:17,143 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 19 [2020-10-27 14:52:17,144 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:52:17,878 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 14:52:17,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:52:17,885 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:52:17,891 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:52:17,892 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 14:52:17,892 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:52:17,892 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-27 14:52:17,892 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:52:17,892 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:52:17,893 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:52:17,893 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:52:17,893 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:52:17,896 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 14:52:17,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:52:17,898 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:52:17,901 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:52:17,901 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:52:17,901 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:52:17,901 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 14:52:17,901 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:52:17,901 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:52:17,902 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:52:17,902 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:52:17,902 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:52:17,911 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 14:52:17,911 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1556552299] [2020-10-27 14:52:17,912 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 14:52:17,912 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2020-10-27 14:52:17,912 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1500518019] [2020-10-27 14:52:17,913 INFO L461 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-10-27 14:52:17,913 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 14:52:17,913 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-10-27 14:52:17,914 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=198, Unknown=0, NotChecked=0, Total=240 [2020-10-27 14:52:17,914 INFO L87 Difference]: Start difference. First operand 43 states and 48 transitions. Second operand 16 states. [2020-10-27 14:52:18,600 WARN L193 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 44 [2020-10-27 14:52:18,839 WARN L193 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 49 DAG size of output: 40 [2020-10-27 14:52:19,549 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 14:52:19,550 INFO L93 Difference]: Finished difference Result 88 states and 106 transitions. [2020-10-27 14:52:19,553 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2020-10-27 14:52:19,554 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 33 [2020-10-27 14:52:19,554 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 14:52:19,556 INFO L225 Difference]: With dead ends: 88 [2020-10-27 14:52:19,556 INFO L226 Difference]: Without dead ends: 85 [2020-10-27 14:52:19,559 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 6 SyntacticMatches, 1 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 176 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=146, Invalid=724, Unknown=0, NotChecked=0, Total=870 [2020-10-27 14:52:19,559 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 85 states. [2020-10-27 14:52:19,587 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 85 to 55. [2020-10-27 14:52:19,587 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 55 states. [2020-10-27 14:52:19,590 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 64 transitions. [2020-10-27 14:52:19,590 INFO L78 Accepts]: Start accepts. Automaton has 55 states and 64 transitions. Word has length 33 [2020-10-27 14:52:19,592 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 14:52:19,592 INFO L481 AbstractCegarLoop]: Abstraction has 55 states and 64 transitions. [2020-10-27 14:52:19,592 INFO L482 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-10-27 14:52:19,592 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states and 64 transitions. [2020-10-27 14:52:19,595 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2020-10-27 14:52:19,595 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 14:52:19,595 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] [2020-10-27 14:52:19,597 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-27 14:52:19,597 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 14:52:19,598 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 14:52:19,598 INFO L82 PathProgramCache]: Analyzing trace with hash -204453044, now seen corresponding path program 1 times [2020-10-27 14:52:19,598 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 14:52:19,598 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [562287523] [2020-10-27 14:52:19,599 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 14:52:19,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:52:19,626 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:52:19,645 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:52:19,702 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:52:19,775 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:52:20,019 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:52:21,429 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:52:21,430 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 45 [2020-10-27 14:52:21,430 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-27 14:52:21,430 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1810 [2020-10-27 14:52:21,430 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:52:21,430 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-10-27 14:52:21,430 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 22 [2020-10-27 14:52:21,431 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-27 14:52:21,431 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:52:21,857 WARN L193 SmtUtils]: Spent 114.00 ms on a formula simplification. DAG size of input: 43 DAG size of output: 30 [2020-10-27 14:52:22,096 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 14:52:22,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:52:22,100 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:52:22,106 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:52:22,106 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 14:52:22,106 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:52:22,107 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-27 14:52:22,107 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:52:22,107 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:52:22,107 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:52:22,107 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:52:22,107 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:52:22,110 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 14:52:22,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:52:22,112 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:52:22,114 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:52:22,114 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:52:22,114 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:52:22,114 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 14:52:22,114 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:52:22,115 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:52:22,115 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:52:22,115 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:52:22,115 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:52:22,124 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 14:52:22,124 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [562287523] [2020-10-27 14:52:22,125 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 14:52:22,125 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-10-27 14:52:22,125 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [749484851] [2020-10-27 14:52:22,126 INFO L461 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-27 14:52:22,126 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 14:52:22,126 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-27 14:52:22,127 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=125, Unknown=0, NotChecked=0, Total=156 [2020-10-27 14:52:22,127 INFO L87 Difference]: Start difference. First operand 55 states and 64 transitions. Second operand 13 states. [2020-10-27 14:52:22,883 WARN L193 SmtUtils]: Spent 125.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 45 [2020-10-27 14:52:23,112 WARN L193 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 41 [2020-10-27 14:52:23,719 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 14:52:23,719 INFO L93 Difference]: Finished difference Result 105 states and 128 transitions. [2020-10-27 14:52:23,720 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2020-10-27 14:52:23,720 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 33 [2020-10-27 14:52:23,721 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 14:52:23,722 INFO L225 Difference]: With dead ends: 105 [2020-10-27 14:52:23,723 INFO L226 Difference]: Without dead ends: 88 [2020-10-27 14:52:23,724 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 7 SyntacticMatches, 1 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 102 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=119, Invalid=481, Unknown=0, NotChecked=0, Total=600 [2020-10-27 14:52:23,724 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 88 states. [2020-10-27 14:52:23,752 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 88 to 62. [2020-10-27 14:52:23,752 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 62 states. [2020-10-27 14:52:23,753 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62 states to 62 states and 73 transitions. [2020-10-27 14:52:23,753 INFO L78 Accepts]: Start accepts. Automaton has 62 states and 73 transitions. Word has length 33 [2020-10-27 14:52:23,754 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 14:52:23,754 INFO L481 AbstractCegarLoop]: Abstraction has 62 states and 73 transitions. [2020-10-27 14:52:23,754 INFO L482 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-27 14:52:23,754 INFO L276 IsEmpty]: Start isEmpty. Operand 62 states and 73 transitions. [2020-10-27 14:52:23,755 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2020-10-27 14:52:23,755 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 14:52:23,756 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-10-27 14:52:23,756 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-27 14:52:23,756 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 14:52:23,756 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 14:52:23,756 INFO L82 PathProgramCache]: Analyzing trace with hash 850290757, now seen corresponding path program 2 times [2020-10-27 14:52:23,757 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 14:52:23,757 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2046842442] [2020-10-27 14:52:23,757 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 14:52:23,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:52:23,775 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:52:23,791 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:52:23,868 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:52:24,060 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:52:24,071 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:52:25,566 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:52:25,567 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 49 [2020-10-27 14:52:25,567 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-27 14:52:25,568 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1796 [2020-10-27 14:52:25,568 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:52:25,568 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-27 14:52:25,568 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-10-27 14:52:25,569 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-27 14:52:25,569 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:52:25,736 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 14:52:25,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:52:25,741 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:52:25,744 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:52:25,745 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 14:52:25,745 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:52:25,745 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-27 14:52:25,745 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:52:25,745 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:52:25,746 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:52:25,746 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:52:25,746 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:52:25,748 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 14:52:25,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:52:25,750 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:52:25,754 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:52:25,754 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:52:25,754 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:52:25,754 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-27 14:52:25,755 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:52:25,755 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:52:25,755 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:52:25,755 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:52:25,755 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:52:25,761 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 6 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 14:52:25,761 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2046842442] [2020-10-27 14:52:25,761 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 14:52:25,761 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-27 14:52:25,762 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [660132579] [2020-10-27 14:52:25,762 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-27 14:52:25,762 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 14:52:25,763 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-27 14:52:25,763 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2020-10-27 14:52:25,763 INFO L87 Difference]: Start difference. First operand 62 states and 73 transitions. Second operand 8 states. [2020-10-27 14:52:26,240 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 14:52:26,240 INFO L93 Difference]: Finished difference Result 144 states and 175 transitions. [2020-10-27 14:52:26,241 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-27 14:52:26,241 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 37 [2020-10-27 14:52:26,241 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 14:52:26,243 INFO L225 Difference]: With dead ends: 144 [2020-10-27 14:52:26,243 INFO L226 Difference]: Without dead ends: 122 [2020-10-27 14:52:26,248 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=44, Invalid=112, Unknown=0, NotChecked=0, Total=156 [2020-10-27 14:52:26,248 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 122 states. [2020-10-27 14:52:26,282 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 122 to 81. [2020-10-27 14:52:26,283 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 81 states. [2020-10-27 14:52:26,284 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 81 states to 81 states and 97 transitions. [2020-10-27 14:52:26,285 INFO L78 Accepts]: Start accepts. Automaton has 81 states and 97 transitions. Word has length 37 [2020-10-27 14:52:26,286 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 14:52:26,286 INFO L481 AbstractCegarLoop]: Abstraction has 81 states and 97 transitions. [2020-10-27 14:52:26,286 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-27 14:52:26,286 INFO L276 IsEmpty]: Start isEmpty. Operand 81 states and 97 transitions. [2020-10-27 14:52:26,287 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2020-10-27 14:52:26,287 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 14:52:26,288 INFO L422 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1] [2020-10-27 14:52:26,288 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-27 14:52:26,288 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 14:52:26,288 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 14:52:26,288 INFO L82 PathProgramCache]: Analyzing trace with hash -1392104145, now seen corresponding path program 1 times [2020-10-27 14:52:26,289 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 14:52:26,289 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [146637216] [2020-10-27 14:52:26,289 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 14:52:26,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:52:26,327 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:52:26,361 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:52:26,397 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:52:26,438 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:52:27,263 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:52:27,263 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 56 [2020-10-27 14:52:27,263 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-27 14:52:27,264 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 950 [2020-10-27 14:52:27,264 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:52:27,264 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-27 14:52:27,264 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 27 [2020-10-27 14:52:27,264 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-10-27 14:52:27,264 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:52:27,379 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 14:52:27,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:52:27,383 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:52:27,388 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:52:27,388 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 14:52:27,388 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:52:27,388 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-27 14:52:27,388 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:52:27,389 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:52:27,389 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:52:27,389 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:52:27,389 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:52:27,392 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 14:52:27,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:52:27,393 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:52:27,395 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:52:27,395 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:52:27,396 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:52:27,396 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 14:52:27,396 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:52:27,396 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:52:27,397 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:52:27,397 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:52:27,397 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-27 14:52:27,399 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-10-27 14:52:27,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:52:27,402 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:52:27,405 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:52:27,405 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:52:27,405 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:52:27,406 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 14:52:27,406 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:52:27,406 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 14:52:27,406 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:52:27,406 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 14:52:27,406 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:52:27,413 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-27 14:52:27,413 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [146637216] [2020-10-27 14:52:27,414 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 14:52:27,414 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-10-27 14:52:27,416 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1323882269] [2020-10-27 14:52:27,416 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-27 14:52:27,417 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 14:52:27,423 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-27 14:52:27,423 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2020-10-27 14:52:27,423 INFO L87 Difference]: Start difference. First operand 81 states and 97 transitions. Second operand 9 states. [2020-10-27 14:52:27,821 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 14:52:27,822 INFO L93 Difference]: Finished difference Result 143 states and 175 transitions. [2020-10-27 14:52:27,823 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-27 14:52:27,823 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 42 [2020-10-27 14:52:27,823 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 14:52:27,827 INFO L225 Difference]: With dead ends: 143 [2020-10-27 14:52:27,827 INFO L226 Difference]: Without dead ends: 126 [2020-10-27 14:52:27,828 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=45, Invalid=137, Unknown=0, NotChecked=0, Total=182 [2020-10-27 14:52:27,829 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 126 states. [2020-10-27 14:52:27,883 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 126 to 110. [2020-10-27 14:52:27,884 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 110 states. [2020-10-27 14:52:27,888 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 110 states to 110 states and 134 transitions. [2020-10-27 14:52:27,888 INFO L78 Accepts]: Start accepts. Automaton has 110 states and 134 transitions. Word has length 42 [2020-10-27 14:52:27,889 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 14:52:27,889 INFO L481 AbstractCegarLoop]: Abstraction has 110 states and 134 transitions. [2020-10-27 14:52:27,889 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-27 14:52:27,889 INFO L276 IsEmpty]: Start isEmpty. Operand 110 states and 134 transitions. [2020-10-27 14:52:27,899 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2020-10-27 14:52:27,899 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 14:52:27,900 INFO L422 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1] [2020-10-27 14:52:27,900 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-27 14:52:27,900 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 14:52:27,901 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 14:52:27,901 INFO L82 PathProgramCache]: Analyzing trace with hash -969402319, now seen corresponding path program 1 times [2020-10-27 14:52:27,902 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 14:52:27,902 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1146119015] [2020-10-27 14:52:27,902 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 14:52:27,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:52:27,926 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:52:27,950 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:52:27,992 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:52:28,087 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:52:28,470 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:52:28,751 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:52:28,887 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:52:30,133 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:52:30,225 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:52:30,258 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:52:30,343 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:52:30,365 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:52:30,584 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:52:32,921 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:52:32,922 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 56 [2020-10-27 14:52:32,922 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 13 [2020-10-27 14:52:32,922 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-10-27 14:52:32,922 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:52:32,922 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-27 14:52:32,922 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 27 [2020-10-27 14:52:32,923 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 25 [2020-10-27 14:52:32,923 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:52:33,086 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 14:52:33,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:52:33,092 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:52:33,102 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:52:33,102 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 14:52:33,102 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:52:33,102 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-27 14:52:33,102 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:52:33,103 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:52:33,103 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:52:33,103 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:52:33,103 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:52:33,106 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 14:52:33,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:52:33,107 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:52:33,109 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:52:33,109 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:52:33,110 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:52:33,110 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 14:52:33,110 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:52:33,110 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:52:33,110 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:52:33,112 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:52:33,112 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-27 14:52:33,113 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-10-27 14:52:33,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:52:33,117 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:52:33,120 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:52:33,120 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:52:33,120 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:52:33,120 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 14:52:33,120 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:52:33,120 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 14:52:33,120 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:52:33,121 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 14:52:33,121 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:52:33,127 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 2 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-27 14:52:33,127 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1146119015] [2020-10-27 14:52:33,127 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 14:52:33,127 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-10-27 14:52:33,128 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1393337454] [2020-10-27 14:52:33,128 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-27 14:52:33,129 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 14:52:33,130 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-27 14:52:33,130 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2020-10-27 14:52:33,130 INFO L87 Difference]: Start difference. First operand 110 states and 134 transitions. Second operand 11 states. [2020-10-27 14:52:33,674 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 14:52:33,674 INFO L93 Difference]: Finished difference Result 152 states and 187 transitions. [2020-10-27 14:52:33,676 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-10-27 14:52:33,676 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 42 [2020-10-27 14:52:33,676 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 14:52:33,678 INFO L225 Difference]: With dead ends: 152 [2020-10-27 14:52:33,678 INFO L226 Difference]: Without dead ends: 149 [2020-10-27 14:52:33,679 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 43 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=56, Invalid=216, Unknown=0, NotChecked=0, Total=272 [2020-10-27 14:52:33,681 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 149 states. [2020-10-27 14:52:33,715 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 149 to 136. [2020-10-27 14:52:33,715 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 136 states. [2020-10-27 14:52:33,718 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 136 states to 136 states and 167 transitions. [2020-10-27 14:52:33,719 INFO L78 Accepts]: Start accepts. Automaton has 136 states and 167 transitions. Word has length 42 [2020-10-27 14:52:33,719 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 14:52:33,719 INFO L481 AbstractCegarLoop]: Abstraction has 136 states and 167 transitions. [2020-10-27 14:52:33,719 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-27 14:52:33,720 INFO L276 IsEmpty]: Start isEmpty. Operand 136 states and 167 transitions. [2020-10-27 14:52:33,721 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2020-10-27 14:52:33,721 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 14:52:33,721 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-10-27 14:52:33,721 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-27 14:52:33,722 INFO L429 AbstractCegarLoop]: === Iteration 8 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 14:52:33,722 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 14:52:33,722 INFO L82 PathProgramCache]: Analyzing trace with hash 1400689598, now seen corresponding path program 3 times [2020-10-27 14:52:33,722 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 14:52:33,723 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [890742611] [2020-10-27 14:52:33,723 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 14:52:33,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:52:33,738 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:52:33,808 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:52:33,829 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:52:33,840 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:52:33,855 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:52:33,946 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:52:34,273 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:52:34,581 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:52:34,625 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:52:35,718 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:52:35,719 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 53 [2020-10-27 14:52:35,719 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-10-27 14:52:35,720 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1985 [2020-10-27 14:52:35,720 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:52:35,720 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 22 [2020-10-27 14:52:35,720 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 23 [2020-10-27 14:52:35,720 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-10-27 14:52:35,720 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:52:35,932 WARN L193 SmtUtils]: Spent 120.00 ms on a formula simplification. DAG size of input: 43 DAG size of output: 39 [2020-10-27 14:52:36,103 WARN L193 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 42 DAG size of output: 40 [2020-10-27 14:52:36,415 WARN L193 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 45 DAG size of output: 43 [2020-10-27 14:52:36,623 WARN L193 SmtUtils]: Spent 116.00 ms on a formula simplification. DAG size of input: 43 DAG size of output: 41 [2020-10-27 14:52:36,814 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 14:52:36,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:52:36,817 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:52:36,822 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:52:36,822 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 14:52:36,822 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:52:36,823 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-27 14:52:36,823 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:52:36,824 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:52:36,824 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:52:36,824 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:52:36,824 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-27 14:52:36,827 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 14:52:36,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:52:36,829 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:52:36,831 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:52:36,831 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:52:36,831 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:52:36,832 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 14:52:36,832 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:52:36,832 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:52:36,832 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:52:36,832 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:52:36,832 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:52:36,851 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 3 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 14:52:36,851 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [890742611] [2020-10-27 14:52:36,851 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 14:52:36,851 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17] total 17 [2020-10-27 14:52:36,852 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [410492922] [2020-10-27 14:52:36,853 INFO L461 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-27 14:52:36,854 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 14:52:36,854 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-27 14:52:36,855 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=236, Unknown=0, NotChecked=0, Total=272 [2020-10-27 14:52:36,855 INFO L87 Difference]: Start difference. First operand 136 states and 167 transitions. Second operand 17 states. [2020-10-27 14:52:38,556 WARN L193 SmtUtils]: Spent 153.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 54 [2020-10-27 14:52:38,825 WARN L193 SmtUtils]: Spent 152.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 52 [2020-10-27 14:52:39,307 WARN L193 SmtUtils]: Spent 175.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 54 [2020-10-27 14:52:39,746 WARN L193 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 41 [2020-10-27 14:52:40,267 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 14:52:40,267 INFO L93 Difference]: Finished difference Result 270 states and 349 transitions. [2020-10-27 14:52:40,268 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2020-10-27 14:52:40,268 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 41 [2020-10-27 14:52:40,268 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 14:52:40,271 INFO L225 Difference]: With dead ends: 270 [2020-10-27 14:52:40,271 INFO L226 Difference]: Without dead ends: 267 [2020-10-27 14:52:40,273 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 8 SyntacticMatches, 6 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 260 ImplicationChecksByTransitivity, 3.1s TimeCoverageRelationStatistics Valid=197, Invalid=1285, Unknown=0, NotChecked=0, Total=1482 [2020-10-27 14:52:40,274 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 267 states. [2020-10-27 14:52:40,313 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 267 to 181. [2020-10-27 14:52:40,313 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 181 states. [2020-10-27 14:52:40,315 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 181 states to 181 states and 229 transitions. [2020-10-27 14:52:40,315 INFO L78 Accepts]: Start accepts. Automaton has 181 states and 229 transitions. Word has length 41 [2020-10-27 14:52:40,316 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 14:52:40,316 INFO L481 AbstractCegarLoop]: Abstraction has 181 states and 229 transitions. [2020-10-27 14:52:40,316 INFO L482 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-27 14:52:40,316 INFO L276 IsEmpty]: Start isEmpty. Operand 181 states and 229 transitions. [2020-10-27 14:52:40,317 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2020-10-27 14:52:40,317 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 14:52:40,317 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-10-27 14:52:40,317 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-27 14:52:40,318 INFO L429 AbstractCegarLoop]: === Iteration 9 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 14:52:40,318 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 14:52:40,318 INFO L82 PathProgramCache]: Analyzing trace with hash 1338649984, now seen corresponding path program 1 times [2020-10-27 14:52:40,318 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 14:52:40,321 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1912392320] [2020-10-27 14:52:40,321 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 14:52:40,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:52:40,336 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:52:40,348 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:52:40,373 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:52:40,384 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:52:40,497 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:52:40,497 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 53 [2020-10-27 14:52:40,497 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-27 14:52:40,497 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 165 [2020-10-27 14:52:40,497 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:52:40,497 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 14:52:40,498 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 23 [2020-10-27 14:52:40,498 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-27 14:52:40,498 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:52:40,547 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 14:52:40,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:52:40,550 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:52:40,553 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:52:40,554 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 14:52:40,554 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:52:40,554 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 14:52:40,554 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:52:40,554 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:52:40,555 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:52:40,555 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:52:40,555 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:52:40,557 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 14:52:40,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:52:40,562 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:52:40,563 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:52:40,564 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:52:40,564 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:52:40,564 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 14:52:40,564 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:52:40,564 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:52:40,564 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:52:40,565 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:52:40,565 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:52:40,568 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-10-27 14:52:40,569 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1912392320] [2020-10-27 14:52:40,569 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 14:52:40,570 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-27 14:52:40,570 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [514533176] [2020-10-27 14:52:40,570 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-27 14:52:40,570 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 14:52:40,571 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-27 14:52:40,571 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-27 14:52:40,571 INFO L87 Difference]: Start difference. First operand 181 states and 229 transitions. Second operand 4 states. [2020-10-27 14:52:40,675 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 14:52:40,675 INFO L93 Difference]: Finished difference Result 253 states and 320 transitions. [2020-10-27 14:52:40,676 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-27 14:52:40,676 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 41 [2020-10-27 14:52:40,676 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 14:52:40,677 INFO L225 Difference]: With dead ends: 253 [2020-10-27 14:52:40,677 INFO L226 Difference]: Without dead ends: 100 [2020-10-27 14:52:40,679 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-27 14:52:40,680 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 100 states. [2020-10-27 14:52:40,697 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 100 to 100. [2020-10-27 14:52:40,697 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 100 states. [2020-10-27 14:52:40,698 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 100 states to 100 states and 120 transitions. [2020-10-27 14:52:40,698 INFO L78 Accepts]: Start accepts. Automaton has 100 states and 120 transitions. Word has length 41 [2020-10-27 14:52:40,698 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 14:52:40,698 INFO L481 AbstractCegarLoop]: Abstraction has 100 states and 120 transitions. [2020-10-27 14:52:40,698 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-27 14:52:40,698 INFO L276 IsEmpty]: Start isEmpty. Operand 100 states and 120 transitions. [2020-10-27 14:52:40,699 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2020-10-27 14:52:40,699 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 14:52:40,699 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-10-27 14:52:40,700 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-27 14:52:40,700 INFO L429 AbstractCegarLoop]: === Iteration 10 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 14:52:40,701 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 14:52:40,701 INFO L82 PathProgramCache]: Analyzing trace with hash 1119795266, now seen corresponding path program 2 times [2020-10-27 14:52:40,701 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 14:52:40,701 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [47117071] [2020-10-27 14:52:40,701 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 14:52:40,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:52:40,723 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:52:40,781 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:52:40,801 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:52:40,861 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:52:40,940 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:52:41,032 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:52:41,516 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:52:43,623 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:52:43,623 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 53 [2020-10-27 14:52:43,623 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-27 14:52:43,623 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2905 [2020-10-27 14:52:43,623 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:52:43,624 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 20 [2020-10-27 14:52:43,624 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 23 [2020-10-27 14:52:43,624 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 21 [2020-10-27 14:52:43,624 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:52:43,861 WARN L193 SmtUtils]: Spent 148.00 ms on a formula simplification. DAG size of input: 46 DAG size of output: 42 [2020-10-27 14:52:44,033 WARN L193 SmtUtils]: Spent 156.00 ms on a formula simplification. DAG size of input: 49 DAG size of output: 45 [2020-10-27 14:52:44,352 WARN L193 SmtUtils]: Spent 266.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 53 [2020-10-27 14:52:44,514 WARN L193 SmtUtils]: Spent 130.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 35 [2020-10-27 14:52:45,029 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 14:52:45,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:52:45,033 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:52:45,036 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:52:45,036 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 14:52:45,036 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:52:45,036 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 14:52:45,036 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:52:45,036 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:52:45,037 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:52:45,037 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:52:45,037 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:52:45,039 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 14:52:45,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:52:45,041 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:52:45,042 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:52:45,043 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:52:45,043 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:52:45,043 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 14:52:45,043 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:52:45,043 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:52:45,043 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:52:45,043 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:52:45,044 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:52:45,059 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 3 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 14:52:45,060 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [47117071] [2020-10-27 14:52:45,060 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 14:52:45,060 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2020-10-27 14:52:45,060 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2126887922] [2020-10-27 14:52:45,060 INFO L461 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-10-27 14:52:45,061 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 14:52:45,061 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-10-27 14:52:45,062 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=201, Unknown=0, NotChecked=0, Total=240 [2020-10-27 14:52:45,062 INFO L87 Difference]: Start difference. First operand 100 states and 120 transitions. Second operand 16 states. [2020-10-27 14:52:45,782 WARN L193 SmtUtils]: Spent 160.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 54 [2020-10-27 14:52:46,036 WARN L193 SmtUtils]: Spent 197.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 54 [2020-10-27 14:52:46,235 WARN L193 SmtUtils]: Spent 121.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 39 [2020-10-27 14:52:46,595 WARN L193 SmtUtils]: Spent 298.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 55 [2020-10-27 14:52:46,975 WARN L193 SmtUtils]: Spent 317.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 60 [2020-10-27 14:52:47,538 WARN L193 SmtUtils]: Spent 304.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 58 [2020-10-27 14:52:48,415 WARN L193 SmtUtils]: Spent 308.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 53 [2020-10-27 14:52:48,984 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 14:52:48,984 INFO L93 Difference]: Finished difference Result 200 states and 247 transitions. [2020-10-27 14:52:48,985 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2020-10-27 14:52:48,985 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 41 [2020-10-27 14:52:48,986 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 14:52:48,988 INFO L225 Difference]: With dead ends: 200 [2020-10-27 14:52:48,988 INFO L226 Difference]: Without dead ends: 168 [2020-10-27 14:52:48,989 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 7 SyntacticMatches, 4 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 181 ImplicationChecksByTransitivity, 4.0s TimeCoverageRelationStatistics Valid=175, Invalid=881, Unknown=0, NotChecked=0, Total=1056 [2020-10-27 14:52:48,990 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 168 states. [2020-10-27 14:52:49,007 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 168 to 112. [2020-10-27 14:52:49,007 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 112 states. [2020-10-27 14:52:49,008 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 112 states to 112 states and 137 transitions. [2020-10-27 14:52:49,008 INFO L78 Accepts]: Start accepts. Automaton has 112 states and 137 transitions. Word has length 41 [2020-10-27 14:52:49,009 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 14:52:49,009 INFO L481 AbstractCegarLoop]: Abstraction has 112 states and 137 transitions. [2020-10-27 14:52:49,009 INFO L482 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-10-27 14:52:49,009 INFO L276 IsEmpty]: Start isEmpty. Operand 112 states and 137 transitions. [2020-10-27 14:52:49,010 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2020-10-27 14:52:49,010 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 14:52:49,010 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 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] [2020-10-27 14:52:49,010 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-27 14:52:49,010 INFO L429 AbstractCegarLoop]: === Iteration 11 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 14:52:49,011 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 14:52:49,011 INFO L82 PathProgramCache]: Analyzing trace with hash 1292236029, now seen corresponding path program 3 times [2020-10-27 14:52:49,011 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 14:52:49,011 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1620428113] [2020-10-27 14:52:49,011 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 14:52:49,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:52:49,031 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:52:49,045 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:52:49,151 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:52:49,164 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:52:49,284 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:52:51,335 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:52:51,335 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 57 [2020-10-27 14:52:51,335 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-27 14:52:51,336 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2311 [2020-10-27 14:52:51,336 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:52:51,336 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-27 14:52:51,336 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-10-27 14:52:51,336 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-10-27 14:52:51,336 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:52:51,596 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 14:52:51,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:52:51,600 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:52:51,605 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:52:51,605 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 14:52:51,605 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:52:51,605 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-27 14:52:51,606 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:52:51,606 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:52:51,606 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:52:51,606 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:52:51,606 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:52:51,609 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 14:52:51,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:52:51,610 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:52:51,612 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:52:51,612 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:52:51,612 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:52:51,612 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 14:52:51,612 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:52:51,612 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:52:51,612 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:52:51,613 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:52:51,613 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:52:51,619 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 15 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 14:52:51,619 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1620428113] [2020-10-27 14:52:51,620 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 14:52:51,620 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-10-27 14:52:51,621 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2121099497] [2020-10-27 14:52:51,623 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-27 14:52:51,623 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 14:52:51,624 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-27 14:52:51,624 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2020-10-27 14:52:51,625 INFO L87 Difference]: Start difference. First operand 112 states and 137 transitions. Second operand 10 states. [2020-10-27 14:52:52,566 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 14:52:52,566 INFO L93 Difference]: Finished difference Result 300 states and 382 transitions. [2020-10-27 14:52:52,567 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-10-27 14:52:52,567 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 45 [2020-10-27 14:52:52,568 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 14:52:52,571 INFO L225 Difference]: With dead ends: 300 [2020-10-27 14:52:52,571 INFO L226 Difference]: Without dead ends: 247 [2020-10-27 14:52:52,572 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 66 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=105, Invalid=275, Unknown=0, NotChecked=0, Total=380 [2020-10-27 14:52:52,572 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 247 states. [2020-10-27 14:52:52,601 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 247 to 159. [2020-10-27 14:52:52,601 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 159 states. [2020-10-27 14:52:52,602 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 159 states to 159 states and 195 transitions. [2020-10-27 14:52:52,602 INFO L78 Accepts]: Start accepts. Automaton has 159 states and 195 transitions. Word has length 45 [2020-10-27 14:52:52,602 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 14:52:52,603 INFO L481 AbstractCegarLoop]: Abstraction has 159 states and 195 transitions. [2020-10-27 14:52:52,603 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-27 14:52:52,603 INFO L276 IsEmpty]: Start isEmpty. Operand 159 states and 195 transitions. [2020-10-27 14:52:52,604 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2020-10-27 14:52:52,604 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 14:52:52,604 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 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] [2020-10-27 14:52:52,604 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-27 14:52:52,604 INFO L429 AbstractCegarLoop]: === Iteration 12 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 14:52:52,605 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 14:52:52,605 INFO L82 PathProgramCache]: Analyzing trace with hash 1306273900, now seen corresponding path program 1 times [2020-10-27 14:52:52,605 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 14:52:52,605 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1318184148] [2020-10-27 14:52:52,605 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 14:52:52,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:52:52,620 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:52:52,631 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:52:52,654 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:52:52,720 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:52:52,773 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:52:56,111 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:52:56,111 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 67 [2020-10-27 14:52:56,111 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-27 14:52:56,112 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3496 [2020-10-27 14:52:56,112 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:52:56,112 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-27 14:52:56,112 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-27 14:52:56,112 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 42 [2020-10-27 14:52:56,112 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:52:56,520 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 14:52:56,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:52:56,524 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:52:56,526 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:52:56,526 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 14:52:56,526 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:52:56,526 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 14:52:56,526 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:52:56,526 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:52:56,527 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:52:56,527 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:52:56,527 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:52:56,528 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 14:52:56,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:52:56,532 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:52:56,537 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:52:56,537 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:52:56,537 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:52:56,538 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-27 14:52:56,538 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:52:56,538 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 14:52:56,538 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:52:56,538 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-27 14:52:56,538 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:52:56,564 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-10-27 14:52:56,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:52:56,567 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:52:56,569 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:52:56,569 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:52:56,569 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:52:56,569 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 14:52:56,569 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:52:56,569 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 14:52:56,569 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:52:56,570 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 14:52:56,570 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:52:56,570 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-10-27 14:52:56,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:52:56,572 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:52:56,574 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:52:56,574 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:52:56,574 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:52:56,575 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 14:52:56,575 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:52:56,575 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 14:52:56,575 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:52:56,575 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 14:52:56,575 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:52:56,583 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 15 proven. 1 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-10-27 14:52:56,584 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1318184148] [2020-10-27 14:52:56,584 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 14:52:56,584 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-10-27 14:52:56,584 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1433038364] [2020-10-27 14:52:56,585 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-27 14:52:56,585 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 14:52:56,585 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-27 14:52:56,585 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=101, Unknown=0, NotChecked=0, Total=132 [2020-10-27 14:52:56,586 INFO L87 Difference]: Start difference. First operand 159 states and 195 transitions. Second operand 12 states. [2020-10-27 14:52:57,389 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 14:52:57,389 INFO L93 Difference]: Finished difference Result 234 states and 284 transitions. [2020-10-27 14:52:57,393 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-27 14:52:57,393 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 51 [2020-10-27 14:52:57,394 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 14:52:57,398 INFO L225 Difference]: With dead ends: 234 [2020-10-27 14:52:57,398 INFO L226 Difference]: Without dead ends: 179 [2020-10-27 14:52:57,399 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 62 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=88, Invalid=292, Unknown=0, NotChecked=0, Total=380 [2020-10-27 14:52:57,399 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 179 states. [2020-10-27 14:52:57,424 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 179 to 156. [2020-10-27 14:52:57,424 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 156 states. [2020-10-27 14:52:57,425 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 156 states to 156 states and 186 transitions. [2020-10-27 14:52:57,426 INFO L78 Accepts]: Start accepts. Automaton has 156 states and 186 transitions. Word has length 51 [2020-10-27 14:52:57,426 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 14:52:57,426 INFO L481 AbstractCegarLoop]: Abstraction has 156 states and 186 transitions. [2020-10-27 14:52:57,426 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-27 14:52:57,426 INFO L276 IsEmpty]: Start isEmpty. Operand 156 states and 186 transitions. [2020-10-27 14:52:57,427 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2020-10-27 14:52:57,427 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 14:52:57,427 INFO L422 BasicCegarLoop]: trace histogram [2, 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] [2020-10-27 14:52:57,427 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-27 14:52:57,428 INFO L429 AbstractCegarLoop]: === Iteration 13 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 14:52:57,428 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 14:52:57,428 INFO L82 PathProgramCache]: Analyzing trace with hash -1431060871, now seen corresponding path program 1 times [2020-10-27 14:52:57,428 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 14:52:57,428 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1096948506] [2020-10-27 14:52:57,428 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 14:52:57,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:52:57,444 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:52:57,462 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:52:57,500 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:52:57,500 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 64 [2020-10-27 14:52:57,501 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 14:52:57,501 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 61 [2020-10-27 14:52:57,501 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:52:57,501 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 14:52:57,501 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 33 [2020-10-27 14:52:57,501 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-27 14:52:57,501 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:52:57,544 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 14:52:57,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:52:57,547 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:52:57,550 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:52:57,550 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 14:52:57,550 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:52:57,550 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 14:52:57,551 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:52:57,551 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:52:57,551 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:52:57,551 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:52:57,551 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:52:57,552 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 14:52:57,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:52:57,553 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:52:57,555 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:52:57,555 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:52:57,555 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:52:57,555 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 14:52:57,555 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:52:57,555 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:52:57,556 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:52:57,556 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:52:57,556 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:52:57,557 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-10-27 14:52:57,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:52:57,558 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:52:57,558 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:52:57,559 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:52:57,559 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:52:57,559 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-27 14:52:57,559 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:52:57,559 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:52:57,559 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-27 14:52:57,559 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:52:57,559 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:52:57,562 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2020-10-27 14:52:57,563 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1096948506] [2020-10-27 14:52:57,563 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 14:52:57,563 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-27 14:52:57,563 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [27659305] [2020-10-27 14:52:57,564 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-27 14:52:57,564 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 14:52:57,564 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-27 14:52:57,564 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-27 14:52:57,564 INFO L87 Difference]: Start difference. First operand 156 states and 186 transitions. Second operand 4 states. [2020-10-27 14:52:57,717 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 14:52:57,717 INFO L93 Difference]: Finished difference Result 213 states and 255 transitions. [2020-10-27 14:52:57,717 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-27 14:52:57,717 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 50 [2020-10-27 14:52:57,718 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 14:52:57,719 INFO L225 Difference]: With dead ends: 213 [2020-10-27 14:52:57,719 INFO L226 Difference]: Without dead ends: 168 [2020-10-27 14:52:57,720 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-27 14:52:57,721 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 168 states. [2020-10-27 14:52:57,744 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 168 to 156. [2020-10-27 14:52:57,744 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 156 states. [2020-10-27 14:52:57,745 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 156 states to 156 states and 182 transitions. [2020-10-27 14:52:57,746 INFO L78 Accepts]: Start accepts. Automaton has 156 states and 182 transitions. Word has length 50 [2020-10-27 14:52:57,746 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 14:52:57,746 INFO L481 AbstractCegarLoop]: Abstraction has 156 states and 182 transitions. [2020-10-27 14:52:57,746 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-27 14:52:57,746 INFO L276 IsEmpty]: Start isEmpty. Operand 156 states and 182 transitions. [2020-10-27 14:52:57,747 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2020-10-27 14:52:57,747 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 14:52:57,747 INFO L422 BasicCegarLoop]: trace histogram [2, 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] [2020-10-27 14:52:57,747 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-27 14:52:57,747 INFO L429 AbstractCegarLoop]: === Iteration 14 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 14:52:57,747 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 14:52:57,748 INFO L82 PathProgramCache]: Analyzing trace with hash -1713214087, now seen corresponding path program 2 times [2020-10-27 14:52:57,748 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 14:52:57,748 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [400027280] [2020-10-27 14:52:57,748 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 14:52:57,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:52:57,766 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:52:57,778 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:52:57,845 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:52:57,846 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 64 [2020-10-27 14:52:57,846 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 14:52:57,846 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 86 [2020-10-27 14:52:57,846 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:52:57,846 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 14:52:57,846 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 33 [2020-10-27 14:52:57,846 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-27 14:52:57,847 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:52:57,893 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 14:52:57,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:52:57,896 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:52:57,898 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:52:57,898 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 14:52:57,899 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:52:57,899 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 14:52:57,899 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:52:57,899 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:52:57,899 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:52:57,899 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:52:57,899 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:52:57,902 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 14:52:57,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:52:57,903 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:52:57,906 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:52:57,906 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:52:57,907 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:52:57,907 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 14:52:57,907 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:52:57,907 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:52:57,907 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:52:57,907 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:52:57,907 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:52:57,909 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-10-27 14:52:57,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:52:57,910 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:52:57,911 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:52:57,911 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:52:57,911 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:52:57,911 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 14:52:57,911 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:52:57,912 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:52:57,912 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-27 14:52:57,912 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:52:57,912 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:52:57,916 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2020-10-27 14:52:57,916 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [400027280] [2020-10-27 14:52:57,916 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 14:52:57,916 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-27 14:52:57,916 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1511719520] [2020-10-27 14:52:57,917 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-27 14:52:57,917 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 14:52:57,918 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-27 14:52:57,918 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-27 14:52:57,918 INFO L87 Difference]: Start difference. First operand 156 states and 182 transitions. Second operand 4 states. [2020-10-27 14:52:58,038 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 14:52:58,038 INFO L93 Difference]: Finished difference Result 187 states and 216 transitions. [2020-10-27 14:52:58,038 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-27 14:52:58,039 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 50 [2020-10-27 14:52:58,039 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 14:52:58,040 INFO L225 Difference]: With dead ends: 187 [2020-10-27 14:52:58,040 INFO L226 Difference]: Without dead ends: 109 [2020-10-27 14:52:58,040 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-27 14:52:58,041 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 109 states. [2020-10-27 14:52:58,057 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 109 to 109. [2020-10-27 14:52:58,057 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 109 states. [2020-10-27 14:52:58,058 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 109 states to 109 states and 122 transitions. [2020-10-27 14:52:58,058 INFO L78 Accepts]: Start accepts. Automaton has 109 states and 122 transitions. Word has length 50 [2020-10-27 14:52:58,058 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 14:52:58,058 INFO L481 AbstractCegarLoop]: Abstraction has 109 states and 122 transitions. [2020-10-27 14:52:58,058 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-27 14:52:58,059 INFO L276 IsEmpty]: Start isEmpty. Operand 109 states and 122 transitions. [2020-10-27 14:52:58,059 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2020-10-27 14:52:58,059 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 14:52:58,059 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-10-27 14:52:58,060 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-10-27 14:52:58,060 INFO L429 AbstractCegarLoop]: === Iteration 15 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 14:52:58,060 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 14:52:58,060 INFO L82 PathProgramCache]: Analyzing trace with hash -1776483726, now seen corresponding path program 1 times [2020-10-27 14:52:58,060 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 14:52:58,061 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1558074760] [2020-10-27 14:52:58,061 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 14:52:58,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:52:58,080 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:52:58,272 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:52:58,453 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:52:58,500 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:52:58,568 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:52:58,666 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:52:58,879 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:53:01,409 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:53:01,409 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 61 [2020-10-27 14:53:01,409 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-27 14:53:01,409 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3335 [2020-10-27 14:53:01,409 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:53:01,409 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 26 [2020-10-27 14:53:01,410 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 23 [2020-10-27 14:53:01,410 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 29 [2020-10-27 14:53:01,410 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:53:02,935 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 14:53:02,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:53:02,939 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:53:02,941 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:53:02,941 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 14:53:02,941 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:53:02,941 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 14:53:02,941 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:53:02,941 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:53:02,941 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:53:02,941 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:53:02,942 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:53:02,943 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 14:53:02,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:53:02,944 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:53:02,945 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:53:02,945 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:53:02,945 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:53:02,945 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 14:53:02,945 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:53:02,946 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:53:02,946 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:53:02,946 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:53:02,946 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:53:02,964 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 5 proven. 25 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 14:53:02,964 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1558074760] [2020-10-27 14:53:02,965 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 14:53:02,965 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19] total 19 [2020-10-27 14:53:02,965 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1972260116] [2020-10-27 14:53:02,965 INFO L461 AbstractCegarLoop]: Interpolant automaton has 19 states [2020-10-27 14:53:02,965 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 14:53:02,966 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2020-10-27 14:53:02,966 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=299, Unknown=0, NotChecked=0, Total=342 [2020-10-27 14:53:02,966 INFO L87 Difference]: Start difference. First operand 109 states and 122 transitions. Second operand 19 states. [2020-10-27 14:53:04,316 WARN L193 SmtUtils]: Spent 117.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 56 [2020-10-27 14:53:04,665 WARN L193 SmtUtils]: Spent 156.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 54 [2020-10-27 14:53:04,930 WARN L193 SmtUtils]: Spent 158.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 56 [2020-10-27 14:53:05,149 WARN L193 SmtUtils]: Spent 154.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 54 [2020-10-27 14:53:05,438 WARN L193 SmtUtils]: Spent 152.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 56 [2020-10-27 14:53:05,665 WARN L193 SmtUtils]: Spent 175.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 54 [2020-10-27 14:53:06,034 WARN L193 SmtUtils]: Spent 138.00 ms on a formula simplification. DAG size of input: 52 DAG size of output: 46 [2020-10-27 14:53:06,440 WARN L193 SmtUtils]: Spent 115.00 ms on a formula simplification. DAG size of input: 52 DAG size of output: 42 [2020-10-27 14:53:07,306 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 14:53:07,306 INFO L93 Difference]: Finished difference Result 175 states and 205 transitions. [2020-10-27 14:53:07,312 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2020-10-27 14:53:07,312 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 49 [2020-10-27 14:53:07,312 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 14:53:07,313 INFO L225 Difference]: With dead ends: 175 [2020-10-27 14:53:07,314 INFO L226 Difference]: Without dead ends: 148 [2020-10-27 14:53:07,315 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 6 SyntacticMatches, 9 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 334 ImplicationChecksByTransitivity, 4.2s TimeCoverageRelationStatistics Valid=238, Invalid=1568, Unknown=0, NotChecked=0, Total=1806 [2020-10-27 14:53:07,315 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 148 states. [2020-10-27 14:53:07,334 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 148 to 116. [2020-10-27 14:53:07,334 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 116 states. [2020-10-27 14:53:07,335 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 116 states to 116 states and 130 transitions. [2020-10-27 14:53:07,335 INFO L78 Accepts]: Start accepts. Automaton has 116 states and 130 transitions. Word has length 49 [2020-10-27 14:53:07,335 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 14:53:07,335 INFO L481 AbstractCegarLoop]: Abstraction has 116 states and 130 transitions. [2020-10-27 14:53:07,336 INFO L482 AbstractCegarLoop]: Interpolant automaton has 19 states. [2020-10-27 14:53:07,336 INFO L276 IsEmpty]: Start isEmpty. Operand 116 states and 130 transitions. [2020-10-27 14:53:07,336 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2020-10-27 14:53:07,336 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 14:53:07,337 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 14:53:07,337 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-10-27 14:53:07,337 INFO L429 AbstractCegarLoop]: === Iteration 16 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 14:53:07,337 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 14:53:07,337 INFO L82 PathProgramCache]: Analyzing trace with hash -432606741, now seen corresponding path program 2 times [2020-10-27 14:53:07,338 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 14:53:07,338 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [565702722] [2020-10-27 14:53:07,338 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 14:53:07,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:53:07,359 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:53:07,527 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:53:10,021 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:53:10,021 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 65 [2020-10-27 14:53:10,021 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 14:53:10,021 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2669 [2020-10-27 14:53:10,021 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:53:10,021 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 18 [2020-10-27 14:53:10,021 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-10-27 14:53:10,021 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 35 [2020-10-27 14:53:10,021 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:53:10,296 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 14:53:10,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:53:10,301 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:53:10,307 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:53:10,307 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 14:53:10,308 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:53:10,308 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-27 14:53:10,308 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:53:10,308 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:53:10,308 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:53:10,309 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:53:10,309 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:53:10,312 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 14:53:10,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:53:10,314 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:53:10,316 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:53:10,316 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:53:10,317 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:53:10,317 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 14:53:10,317 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:53:10,317 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:53:10,317 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:53:10,317 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:53:10,317 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:53:10,331 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2020-10-27 14:53:10,332 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [565702722] [2020-10-27 14:53:10,338 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 14:53:10,339 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-10-27 14:53:10,339 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1178768712] [2020-10-27 14:53:10,341 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-27 14:53:10,342 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 14:53:10,342 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-27 14:53:10,345 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-10-27 14:53:10,346 INFO L87 Difference]: Start difference. First operand 116 states and 130 transitions. Second operand 9 states. [2020-10-27 14:53:10,755 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 14:53:10,756 INFO L93 Difference]: Finished difference Result 144 states and 160 transitions. [2020-10-27 14:53:10,756 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-27 14:53:10,757 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 53 [2020-10-27 14:53:10,757 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 14:53:10,758 INFO L225 Difference]: With dead ends: 144 [2020-10-27 14:53:10,758 INFO L226 Difference]: Without dead ends: 117 [2020-10-27 14:53:10,759 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 6 SyntacticMatches, 10 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 38 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=49, Invalid=133, Unknown=0, NotChecked=0, Total=182 [2020-10-27 14:53:10,759 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 117 states. [2020-10-27 14:53:10,775 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 117 to 77. [2020-10-27 14:53:10,775 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 77 states. [2020-10-27 14:53:10,776 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 77 states to 77 states and 83 transitions. [2020-10-27 14:53:10,776 INFO L78 Accepts]: Start accepts. Automaton has 77 states and 83 transitions. Word has length 53 [2020-10-27 14:53:10,776 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 14:53:10,777 INFO L481 AbstractCegarLoop]: Abstraction has 77 states and 83 transitions. [2020-10-27 14:53:10,777 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-27 14:53:10,777 INFO L276 IsEmpty]: Start isEmpty. Operand 77 states and 83 transitions. [2020-10-27 14:53:10,777 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2020-10-27 14:53:10,777 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 14:53:10,778 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 2, 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] [2020-10-27 14:53:10,778 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-10-27 14:53:10,778 INFO L429 AbstractCegarLoop]: === Iteration 17 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 14:53:10,780 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 14:53:10,780 INFO L82 PathProgramCache]: Analyzing trace with hash -69573794, now seen corresponding path program 1 times [2020-10-27 14:53:10,781 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 14:53:10,784 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [285846008] [2020-10-27 14:53:10,784 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 14:53:10,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:53:10,816 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:53:10,862 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:53:10,971 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:53:11,127 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:53:11,159 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:53:11,459 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:53:11,607 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:53:11,842 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:53:12,492 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:53:12,525 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:53:14,047 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:53:15,809 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:53:15,809 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 75 [2020-10-27 14:53:15,809 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 11 [2020-10-27 14:53:15,810 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5003 [2020-10-27 14:53:15,810 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:53:15,810 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 19 [2020-10-27 14:53:15,810 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 26 [2020-10-27 14:53:15,810 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 40 [2020-10-27 14:53:15,810 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:53:16,067 WARN L193 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 37 DAG size of output: 33 [2020-10-27 14:53:16,649 WARN L193 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 35 DAG size of output: 31 [2020-10-27 14:53:16,820 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 14:53:16,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:53:16,822 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:53:16,825 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:53:16,825 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 14:53:16,825 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:53:16,825 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 14:53:16,826 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:53:16,826 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:53:16,826 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:53:16,826 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:53:16,826 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:53:16,828 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 14:53:16,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:53:16,829 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:53:16,831 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:53:16,831 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:53:16,831 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:53:16,831 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 14:53:16,831 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:53:16,831 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:53:16,831 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:53:16,832 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:53:16,832 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:53:16,833 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-10-27 14:53:16,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:53:16,835 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:53:16,837 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:53:16,838 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:53:16,838 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:53:16,838 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 14:53:16,838 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:53:16,838 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 14:53:16,838 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:53:16,838 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 14:53:16,839 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:53:16,840 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2020-10-27 14:53:16,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:53:16,842 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:53:16,844 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:53:16,844 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:53:16,844 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:53:16,844 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 14:53:16,844 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:53:16,844 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 14:53:16,845 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:53:16,845 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 14:53:16,845 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:53:16,876 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 11 proven. 15 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-10-27 14:53:16,876 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [285846008] [2020-10-27 14:53:16,876 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 14:53:16,877 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2020-10-27 14:53:16,877 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2124920926] [2020-10-27 14:53:16,877 INFO L461 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-10-27 14:53:16,877 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 14:53:16,878 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-10-27 14:53:16,878 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=201, Unknown=0, NotChecked=0, Total=240 [2020-10-27 14:53:16,878 INFO L87 Difference]: Start difference. First operand 77 states and 83 transitions. Second operand 16 states. [2020-10-27 14:53:17,685 WARN L193 SmtUtils]: Spent 136.00 ms on a formula simplification. DAG size of input: 52 DAG size of output: 46 [2020-10-27 14:53:17,835 WARN L193 SmtUtils]: Spent 114.00 ms on a formula simplification. DAG size of input: 52 DAG size of output: 42 [2020-10-27 14:53:18,935 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 14:53:18,936 INFO L93 Difference]: Finished difference Result 124 states and 141 transitions. [2020-10-27 14:53:18,937 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2020-10-27 14:53:18,937 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 59 [2020-10-27 14:53:18,937 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 14:53:18,938 INFO L225 Difference]: With dead ends: 124 [2020-10-27 14:53:18,938 INFO L226 Difference]: Without dead ends: 107 [2020-10-27 14:53:18,939 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 9 SyntacticMatches, 5 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 192 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=157, Invalid=835, Unknown=0, NotChecked=0, Total=992 [2020-10-27 14:53:18,940 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 107 states. [2020-10-27 14:53:18,957 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 107 to 95. [2020-10-27 14:53:18,957 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 95 states. [2020-10-27 14:53:18,958 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 95 states to 95 states and 106 transitions. [2020-10-27 14:53:18,958 INFO L78 Accepts]: Start accepts. Automaton has 95 states and 106 transitions. Word has length 59 [2020-10-27 14:53:18,959 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 14:53:18,959 INFO L481 AbstractCegarLoop]: Abstraction has 95 states and 106 transitions. [2020-10-27 14:53:18,959 INFO L482 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-10-27 14:53:18,959 INFO L276 IsEmpty]: Start isEmpty. Operand 95 states and 106 transitions. [2020-10-27 14:53:18,960 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2020-10-27 14:53:18,960 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 14:53:18,960 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 3, 3, 3, 3, 3, 3, 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] [2020-10-27 14:53:18,960 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-10-27 14:53:18,960 INFO L429 AbstractCegarLoop]: === Iteration 18 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 14:53:18,960 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 14:53:18,961 INFO L82 PathProgramCache]: Analyzing trace with hash -1386289189, now seen corresponding path program 2 times [2020-10-27 14:53:18,961 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 14:53:18,961 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [994915392] [2020-10-27 14:53:18,961 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 14:53:18,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:53:18,985 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:53:19,020 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:53:19,084 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:53:19,187 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:53:19,545 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:53:19,921 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:53:20,068 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:53:20,311 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:53:20,355 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:53:20,370 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:53:20,815 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:53:20,869 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:53:20,891 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:53:20,922 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:53:21,106 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:53:21,494 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:53:23,596 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:53:23,980 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:53:23,980 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 86 [2020-10-27 14:53:23,980 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 17 [2020-10-27 14:53:23,980 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5004 [2020-10-27 14:53:23,981 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:53:23,981 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-27 14:53:23,983 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 31 [2020-10-27 14:53:23,983 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 51 [2020-10-27 14:53:23,983 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-27 14:53:24,196 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 14:53:24,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:53:24,199 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:53:24,202 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:53:24,202 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 14:53:24,202 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:53:24,202 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 14:53:24,202 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:53:24,202 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:53:24,203 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:53:24,203 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:53:24,203 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:53:24,205 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 14:53:24,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:53:24,206 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:53:24,207 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:53:24,207 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:53:24,208 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:53:24,208 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 14:53:24,208 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:53:24,208 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:53:24,208 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:53:24,208 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:53:24,208 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:53:24,209 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-10-27 14:53:24,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:53:24,212 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:53:24,213 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:53:24,214 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:53:24,214 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:53:24,214 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 14:53:24,214 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:53:24,214 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 14:53:24,214 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:53:24,214 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 14:53:24,215 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:53:24,216 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2020-10-27 14:53:24,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:53:24,218 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:53:24,220 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:53:24,220 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:53:24,220 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:53:24,220 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 14:53:24,220 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:53:24,220 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 14:53:24,220 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:53:24,220 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 14:53:24,221 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:53:24,222 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2020-10-27 14:53:24,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:53:24,224 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:53:24,226 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:53:24,226 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:53:24,226 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:53:24,226 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 14:53:24,226 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:53:24,226 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 14:53:24,227 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:53:24,227 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 14:53:24,227 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:53:24,238 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 6 proven. 30 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2020-10-27 14:53:24,239 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [994915392] [2020-10-27 14:53:24,239 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 14:53:24,239 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2020-10-27 14:53:24,239 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [248917642] [2020-10-27 14:53:24,240 INFO L461 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-10-27 14:53:24,240 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 14:53:24,240 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-10-27 14:53:24,241 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=154, Unknown=0, NotChecked=0, Total=182 [2020-10-27 14:53:24,241 INFO L87 Difference]: Start difference. First operand 95 states and 106 transitions. Second operand 14 states. [2020-10-27 14:53:25,255 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 14:53:25,256 INFO L93 Difference]: Finished difference Result 124 states and 141 transitions. [2020-10-27 14:53:25,256 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2020-10-27 14:53:25,257 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 68 [2020-10-27 14:53:25,257 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 14:53:25,258 INFO L225 Difference]: With dead ends: 124 [2020-10-27 14:53:25,258 INFO L226 Difference]: Without dead ends: 121 [2020-10-27 14:53:25,259 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 107 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=96, Invalid=606, Unknown=0, NotChecked=0, Total=702 [2020-10-27 14:53:25,259 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 121 states. [2020-10-27 14:53:25,282 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 121 to 111. [2020-10-27 14:53:25,283 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 111 states. [2020-10-27 14:53:25,284 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 111 states to 111 states and 127 transitions. [2020-10-27 14:53:25,284 INFO L78 Accepts]: Start accepts. Automaton has 111 states and 127 transitions. Word has length 68 [2020-10-27 14:53:25,284 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 14:53:25,284 INFO L481 AbstractCegarLoop]: Abstraction has 111 states and 127 transitions. [2020-10-27 14:53:25,284 INFO L482 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-10-27 14:53:25,284 INFO L276 IsEmpty]: Start isEmpty. Operand 111 states and 127 transitions. [2020-10-27 14:53:25,285 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2020-10-27 14:53:25,285 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 14:53:25,285 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2020-10-27 14:53:25,286 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2020-10-27 14:53:25,286 INFO L429 AbstractCegarLoop]: === Iteration 19 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 14:53:25,286 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 14:53:25,286 INFO L82 PathProgramCache]: Analyzing trace with hash -934043118, now seen corresponding path program 3 times [2020-10-27 14:53:25,286 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 14:53:25,287 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [79222555] [2020-10-27 14:53:25,287 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 14:53:25,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:53:25,313 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:53:25,358 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:53:25,554 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:53:25,622 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:53:25,709 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:53:25,732 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:53:25,770 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:53:25,880 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:53:26,023 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:53:26,088 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:53:27,211 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:53:28,204 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:53:28,370 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:53:30,310 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:53:30,311 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 83 [2020-10-27 14:53:30,311 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 13 [2020-10-27 14:53:30,311 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5007 [2020-10-27 14:53:30,311 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:53:30,311 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 25 [2020-10-27 14:53:30,311 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 27 [2020-10-27 14:53:30,312 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 47 [2020-10-27 14:53:30,312 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:53:31,601 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 14:53:31,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:53:31,605 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:53:31,607 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:53:31,607 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 14:53:31,607 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:53:31,607 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 14:53:31,607 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:53:31,607 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:53:31,607 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:53:31,607 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:53:31,608 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:53:31,618 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 14:53:31,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:53:31,619 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:53:31,620 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:53:31,620 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:53:31,620 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:53:31,620 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 14:53:31,620 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:53:31,621 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:53:31,621 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:53:31,621 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:53:31,621 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:53:31,622 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-10-27 14:53:31,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:53:31,623 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:53:31,624 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:53:31,625 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:53:31,625 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:53:31,625 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 14:53:31,625 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:53:31,625 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 14:53:31,625 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:53:31,625 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 14:53:31,625 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:53:31,626 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2020-10-27 14:53:31,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:53:31,627 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:53:31,628 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:53:31,628 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:53:31,629 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:53:31,629 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 14:53:31,629 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:53:31,629 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 14:53:31,629 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:53:31,629 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 14:53:31,629 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:53:31,646 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 16 proven. 27 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-10-27 14:53:31,647 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [79222555] [2020-10-27 14:53:31,647 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 14:53:31,647 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19] total 19 [2020-10-27 14:53:31,647 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1042724657] [2020-10-27 14:53:31,647 INFO L461 AbstractCegarLoop]: Interpolant automaton has 19 states [2020-10-27 14:53:31,647 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 14:53:31,648 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2020-10-27 14:53:31,648 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=297, Unknown=0, NotChecked=0, Total=342 [2020-10-27 14:53:31,648 INFO L87 Difference]: Start difference. First operand 111 states and 127 transitions. Second operand 19 states. [2020-10-27 14:53:32,583 WARN L193 SmtUtils]: Spent 180.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 61 [2020-10-27 14:53:33,170 WARN L193 SmtUtils]: Spent 165.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 55 [2020-10-27 14:53:33,482 WARN L193 SmtUtils]: Spent 136.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 49 [2020-10-27 14:53:33,748 WARN L193 SmtUtils]: Spent 133.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 45 [2020-10-27 14:53:35,259 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 14:53:35,260 INFO L93 Difference]: Finished difference Result 174 states and 205 transitions. [2020-10-27 14:53:35,261 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2020-10-27 14:53:35,261 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 67 [2020-10-27 14:53:35,261 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 14:53:35,263 INFO L225 Difference]: With dead ends: 174 [2020-10-27 14:53:35,263 INFO L226 Difference]: Without dead ends: 147 [2020-10-27 14:53:35,264 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 9 SyntacticMatches, 8 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 339 ImplicationChecksByTransitivity, 3.5s TimeCoverageRelationStatistics Valid=258, Invalid=1548, Unknown=0, NotChecked=0, Total=1806 [2020-10-27 14:53:35,264 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 147 states. [2020-10-27 14:53:35,288 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 147 to 115. [2020-10-27 14:53:35,288 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 115 states. [2020-10-27 14:53:35,289 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 115 states to 115 states and 132 transitions. [2020-10-27 14:53:35,289 INFO L78 Accepts]: Start accepts. Automaton has 115 states and 132 transitions. Word has length 67 [2020-10-27 14:53:35,289 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 14:53:35,289 INFO L481 AbstractCegarLoop]: Abstraction has 115 states and 132 transitions. [2020-10-27 14:53:35,290 INFO L482 AbstractCegarLoop]: Interpolant automaton has 19 states. [2020-10-27 14:53:35,290 INFO L276 IsEmpty]: Start isEmpty. Operand 115 states and 132 transitions. [2020-10-27 14:53:35,291 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2020-10-27 14:53:35,291 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 14:53:35,291 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 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] [2020-10-27 14:53:35,291 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2020-10-27 14:53:35,291 INFO L429 AbstractCegarLoop]: === Iteration 20 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 14:53:35,292 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 14:53:35,292 INFO L82 PathProgramCache]: Analyzing trace with hash -352844469, now seen corresponding path program 4 times [2020-10-27 14:53:35,292 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 14:53:35,292 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [668479764] [2020-10-27 14:53:35,292 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 14:53:35,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:53:35,315 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:53:35,342 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:53:35,458 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:53:35,652 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:53:38,204 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:53:38,347 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:53:38,569 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:53:40,309 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:53:40,310 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 87 [2020-10-27 14:53:40,310 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-27 14:53:40,310 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5003 [2020-10-27 14:53:40,310 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:53:40,310 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-27 14:53:40,310 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-10-27 14:53:40,310 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-10-27 14:53:40,310 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:53:40,619 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 14:53:40,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:53:40,622 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:53:40,624 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:53:40,624 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 14:53:40,624 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:53:40,624 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 14:53:40,625 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:53:40,625 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:53:40,625 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:53:40,625 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:53:40,625 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:53:40,626 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 14:53:40,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:53:40,627 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:53:40,628 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:53:40,628 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:53:40,628 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:53:40,629 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 14:53:40,629 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:53:40,629 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:53:40,629 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:53:40,629 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:53:40,629 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:53:40,630 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2020-10-27 14:53:40,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:53:40,631 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:53:40,631 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:53:40,631 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:53:40,631 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:53:40,631 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-27 14:53:40,631 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:53:40,632 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:53:40,632 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-27 14:53:40,632 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:53:40,632 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:53:40,632 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2020-10-27 14:53:40,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:53:40,633 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:53:40,634 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:53:40,634 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:53:40,634 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:53:40,634 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-27 14:53:40,634 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:53:40,634 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:53:40,634 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-27 14:53:40,634 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:53:40,634 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:53:40,643 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 32 proven. 15 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2020-10-27 14:53:40,643 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [668479764] [2020-10-27 14:53:40,643 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 14:53:40,643 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-10-27 14:53:40,643 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [778458789] [2020-10-27 14:53:40,644 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-27 14:53:40,644 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 14:53:40,644 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-27 14:53:40,644 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=99, Unknown=0, NotChecked=0, Total=132 [2020-10-27 14:53:40,644 INFO L87 Difference]: Start difference. First operand 115 states and 132 transitions. Second operand 12 states. [2020-10-27 14:53:41,910 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 14:53:41,910 INFO L93 Difference]: Finished difference Result 255 states and 299 transitions. [2020-10-27 14:53:41,911 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2020-10-27 14:53:41,911 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 71 [2020-10-27 14:53:41,911 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 14:53:41,913 INFO L225 Difference]: With dead ends: 255 [2020-10-27 14:53:41,913 INFO L226 Difference]: Without dead ends: 205 [2020-10-27 14:53:41,914 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 118 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=158, Invalid=442, Unknown=0, NotChecked=0, Total=600 [2020-10-27 14:53:41,915 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 205 states. [2020-10-27 14:53:41,948 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 205 to 157. [2020-10-27 14:53:41,948 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 157 states. [2020-10-27 14:53:41,949 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 157 states to 157 states and 179 transitions. [2020-10-27 14:53:41,950 INFO L78 Accepts]: Start accepts. Automaton has 157 states and 179 transitions. Word has length 71 [2020-10-27 14:53:41,950 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 14:53:41,950 INFO L481 AbstractCegarLoop]: Abstraction has 157 states and 179 transitions. [2020-10-27 14:53:41,950 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-27 14:53:41,950 INFO L276 IsEmpty]: Start isEmpty. Operand 157 states and 179 transitions. [2020-10-27 14:53:41,951 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2020-10-27 14:53:41,951 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 14:53:41,952 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 4, 4, 4, 4, 4, 4, 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] [2020-10-27 14:53:41,952 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2020-10-27 14:53:41,952 INFO L429 AbstractCegarLoop]: === Iteration 21 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 14:53:41,952 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 14:53:41,952 INFO L82 PathProgramCache]: Analyzing trace with hash -1769267202, now seen corresponding path program 5 times [2020-10-27 14:53:41,953 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 14:53:41,953 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [626009728] [2020-10-27 14:53:41,953 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 14:53:41,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:53:41,975 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:53:42,027 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:53:42,046 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:53:42,068 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:53:42,138 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:53:43,821 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:53:43,887 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:53:46,968 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:53:46,968 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 97 [2020-10-27 14:53:46,968 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-27 14:53:46,968 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-10-27 14:53:46,969 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:53:46,969 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-10-27 14:53:46,969 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-27 14:53:46,969 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 72 [2020-10-27 14:53:46,969 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:53:47,603 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 14:53:47,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:53:47,606 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:53:47,609 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:53:47,609 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 14:53:47,609 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:53:47,609 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 14:53:47,609 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:53:47,609 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:53:47,609 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:53:47,610 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:53:47,610 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:53:47,612 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 14:53:47,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:53:47,614 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:53:47,617 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:53:47,617 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:53:47,618 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:53:47,618 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-27 14:53:47,618 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:53:47,618 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 14:53:47,618 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:53:47,618 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-27 14:53:47,618 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:53:47,653 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-10-27 14:53:47,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:53:47,657 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:53:47,659 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:53:47,659 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:53:47,659 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:53:47,660 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 14:53:47,660 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:53:47,660 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 14:53:47,660 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:53:47,660 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 14:53:47,660 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:53:47,661 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2020-10-27 14:53:47,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:53:47,663 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:53:47,665 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:53:47,665 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:53:47,665 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:53:47,665 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 14:53:47,665 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:53:47,665 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 14:53:47,665 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:53:47,666 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 14:53:47,666 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:53:47,666 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2020-10-27 14:53:47,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:53:47,668 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:53:47,670 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:53:47,670 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:53:47,670 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:53:47,671 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 14:53:47,671 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:53:47,671 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 14:53:47,671 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:53:47,671 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 14:53:47,671 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:53:47,672 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2020-10-27 14:53:47,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:53:47,674 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:53:47,675 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:53:47,675 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:53:47,676 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:53:47,676 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 14:53:47,676 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:53:47,676 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 14:53:47,676 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:53:47,676 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 14:53:47,676 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:53:47,698 INFO L134 CoverageAnalysis]: Checked inductivity of 86 backedges. 50 proven. 6 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2020-10-27 14:53:47,698 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [626009728] [2020-10-27 14:53:47,698 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 14:53:47,698 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2020-10-27 14:53:47,699 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [815117829] [2020-10-27 14:53:47,699 INFO L461 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-27 14:53:47,699 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 14:53:47,699 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-27 14:53:47,700 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=161, Unknown=0, NotChecked=0, Total=210 [2020-10-27 14:53:47,700 INFO L87 Difference]: Start difference. First operand 157 states and 179 transitions. Second operand 15 states. [2020-10-27 14:53:48,868 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 14:53:48,868 INFO L93 Difference]: Finished difference Result 214 states and 242 transitions. [2020-10-27 14:53:48,868 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2020-10-27 14:53:48,868 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 77 [2020-10-27 14:53:48,869 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 14:53:48,870 INFO L225 Difference]: With dead ends: 214 [2020-10-27 14:53:48,870 INFO L226 Difference]: Without dead ends: 151 [2020-10-27 14:53:48,873 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 135 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=148, Invalid=554, Unknown=0, NotChecked=0, Total=702 [2020-10-27 14:53:48,873 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 151 states. [2020-10-27 14:53:48,906 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 151 to 151. [2020-10-27 14:53:48,906 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 151 states. [2020-10-27 14:53:48,907 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 151 states to 151 states and 170 transitions. [2020-10-27 14:53:48,907 INFO L78 Accepts]: Start accepts. Automaton has 151 states and 170 transitions. Word has length 77 [2020-10-27 14:53:48,908 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 14:53:48,908 INFO L481 AbstractCegarLoop]: Abstraction has 151 states and 170 transitions. [2020-10-27 14:53:48,908 INFO L482 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-27 14:53:48,908 INFO L276 IsEmpty]: Start isEmpty. Operand 151 states and 170 transitions. [2020-10-27 14:53:48,909 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2020-10-27 14:53:48,909 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 14:53:48,909 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 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] [2020-10-27 14:53:48,909 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2020-10-27 14:53:48,909 INFO L429 AbstractCegarLoop]: === Iteration 22 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 14:53:48,910 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 14:53:48,910 INFO L82 PathProgramCache]: Analyzing trace with hash -2133410874, now seen corresponding path program 6 times [2020-10-27 14:53:48,910 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 14:53:48,910 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1420387277] [2020-10-27 14:53:48,910 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 14:53:48,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:53:48,941 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:53:49,060 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:53:49,208 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:53:49,719 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:53:49,818 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:53:49,864 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:53:50,000 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:53:50,436 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:53:50,818 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:53:51,259 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:53:51,566 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:53:51,968 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:53:53,928 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:53:53,929 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 91 [2020-10-27 14:53:53,929 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 12 [2020-10-27 14:53:53,929 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-10-27 14:53:53,929 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:53:53,929 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 31 [2020-10-27 14:53:53,929 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 27 [2020-10-27 14:53:53,929 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 55 [2020-10-27 14:53:53,929 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:53:54,532 WARN L193 SmtUtils]: Spent 387.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 52 [2020-10-27 14:53:54,956 WARN L193 SmtUtils]: Spent 394.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 55 [2020-10-27 14:53:55,568 WARN L193 SmtUtils]: Spent 531.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 56 [2020-10-27 14:53:55,833 WARN L193 SmtUtils]: Spent 115.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 27 [2020-10-27 14:53:56,865 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 14:53:56,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:53:56,870 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:53:56,872 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:53:56,872 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 14:53:56,872 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:53:56,872 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 14:53:56,872 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:53:56,872 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:53:56,872 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:53:56,872 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:53:56,873 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:53:56,874 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 14:53:56,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:53:56,875 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:53:56,876 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:53:56,876 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:53:56,876 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:53:56,876 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 14:53:56,876 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:53:56,876 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:53:56,876 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:53:56,876 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:53:56,876 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:53:56,877 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2020-10-27 14:53:56,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:53:56,879 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:53:56,882 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:53:56,882 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:53:56,882 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:53:56,882 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 14:53:56,882 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:53:56,882 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 14:53:56,882 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:53:56,882 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 14:53:56,883 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:53:56,884 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2020-10-27 14:53:56,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:53:56,885 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:53:56,887 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:53:56,887 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:53:56,887 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:53:56,887 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 14:53:56,887 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:53:56,887 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 14:53:56,888 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:53:56,888 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 14:53:56,888 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:53:56,915 INFO L134 CoverageAnalysis]: Checked inductivity of 75 backedges. 25 proven. 44 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-10-27 14:53:56,915 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1420387277] [2020-10-27 14:53:56,915 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 14:53:56,916 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22] total 22 [2020-10-27 14:53:56,916 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1083236752] [2020-10-27 14:53:56,916 INFO L461 AbstractCegarLoop]: Interpolant automaton has 22 states [2020-10-27 14:53:56,916 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 14:53:56,917 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2020-10-27 14:53:56,917 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=62, Invalid=400, Unknown=0, NotChecked=0, Total=462 [2020-10-27 14:53:56,917 INFO L87 Difference]: Start difference. First operand 151 states and 170 transitions. Second operand 22 states. [2020-10-27 14:53:57,787 WARN L193 SmtUtils]: Spent 177.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 42 [2020-10-27 14:53:58,017 WARN L193 SmtUtils]: Spent 155.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 53 [2020-10-27 14:53:58,335 WARN L193 SmtUtils]: Spent 258.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 63 [2020-10-27 14:53:58,567 WARN L193 SmtUtils]: Spent 170.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 46 [2020-10-27 14:53:58,832 WARN L193 SmtUtils]: Spent 204.00 ms on a formula simplification. DAG size of input: 93 DAG size of output: 52 [2020-10-27 14:53:59,148 WARN L193 SmtUtils]: Spent 189.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 45 [2020-10-27 14:53:59,450 WARN L193 SmtUtils]: Spent 234.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 41 [2020-10-27 14:53:59,683 WARN L193 SmtUtils]: Spent 111.00 ms on a formula simplification that was a NOOP. DAG size: 59 [2020-10-27 14:54:00,182 WARN L193 SmtUtils]: Spent 432.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 65 [2020-10-27 14:54:00,371 WARN L193 SmtUtils]: Spent 107.00 ms on a formula simplification that was a NOOP. DAG size: 58 [2020-10-27 14:54:00,999 WARN L193 SmtUtils]: Spent 269.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 64 [2020-10-27 14:54:01,334 WARN L193 SmtUtils]: Spent 291.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 65 [2020-10-27 14:54:01,846 WARN L193 SmtUtils]: Spent 428.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 64 [2020-10-27 14:54:02,082 WARN L193 SmtUtils]: Spent 102.00 ms on a formula simplification that was a NOOP. DAG size: 54 [2020-10-27 14:54:02,629 WARN L193 SmtUtils]: Spent 426.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 58 [2020-10-27 14:54:02,907 WARN L193 SmtUtils]: Spent 187.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 49 [2020-10-27 14:54:03,186 WARN L193 SmtUtils]: Spent 184.00 ms on a formula simplification. DAG size of input: 96 DAG size of output: 50 [2020-10-27 14:54:03,452 WARN L193 SmtUtils]: Spent 204.00 ms on a formula simplification. DAG size of input: 97 DAG size of output: 51 [2020-10-27 14:54:03,923 WARN L193 SmtUtils]: Spent 184.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 50 [2020-10-27 14:54:04,188 WARN L193 SmtUtils]: Spent 197.00 ms on a formula simplification. DAG size of input: 96 DAG size of output: 35 [2020-10-27 14:54:04,539 WARN L193 SmtUtils]: Spent 174.00 ms on a formula simplification. DAG size of input: 95 DAG size of output: 34 [2020-10-27 14:54:04,950 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 14:54:04,951 INFO L93 Difference]: Finished difference Result 215 states and 249 transitions. [2020-10-27 14:54:04,959 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2020-10-27 14:54:04,959 INFO L78 Accepts]: Start accepts. Automaton has 22 states. Word has length 75 [2020-10-27 14:54:04,959 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 14:54:04,961 INFO L225 Difference]: With dead ends: 215 [2020-10-27 14:54:04,961 INFO L226 Difference]: Without dead ends: 188 [2020-10-27 14:54:04,962 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 69 GetRequests, 9 SyntacticMatches, 11 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 583 ImplicationChecksByTransitivity, 9.1s TimeCoverageRelationStatistics Valid=388, Invalid=2162, Unknown=0, NotChecked=0, Total=2550 [2020-10-27 14:54:04,963 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 188 states. [2020-10-27 14:54:05,002 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 188 to 169. [2020-10-27 14:54:05,002 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 169 states. [2020-10-27 14:54:05,004 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 169 states to 169 states and 193 transitions. [2020-10-27 14:54:05,004 INFO L78 Accepts]: Start accepts. Automaton has 169 states and 193 transitions. Word has length 75 [2020-10-27 14:54:05,004 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 14:54:05,004 INFO L481 AbstractCegarLoop]: Abstraction has 169 states and 193 transitions. [2020-10-27 14:54:05,004 INFO L482 AbstractCegarLoop]: Interpolant automaton has 22 states. [2020-10-27 14:54:05,004 INFO L276 IsEmpty]: Start isEmpty. Operand 169 states and 193 transitions. [2020-10-27 14:54:05,005 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2020-10-27 14:54:05,006 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 14:54:05,006 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 4, 4, 4, 4, 3, 3, 3, 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] [2020-10-27 14:54:05,006 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2020-10-27 14:54:05,006 INFO L429 AbstractCegarLoop]: === Iteration 23 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 14:54:05,006 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 14:54:05,007 INFO L82 PathProgramCache]: Analyzing trace with hash 338633983, now seen corresponding path program 7 times [2020-10-27 14:54:05,007 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 14:54:05,007 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [445913457] [2020-10-27 14:54:05,007 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 14:54:05,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:54:05,034 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:54:05,068 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:54:05,358 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:54:06,998 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:54:07,051 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:54:10,026 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:54:10,026 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 95 [2020-10-27 14:54:10,026 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-27 14:54:10,026 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-10-27 14:54:10,026 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:54:10,027 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 23 [2020-10-27 14:54:10,027 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-10-27 14:54:10,027 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 65 [2020-10-27 14:54:10,027 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:54:10,412 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 14:54:10,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:54:10,415 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:54:10,417 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:54:10,417 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 14:54:10,417 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:54:10,417 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 14:54:10,418 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:54:10,418 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:54:10,418 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:54:10,418 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:54:10,418 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:54:10,420 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 14:54:10,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:54:10,421 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:54:10,422 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:54:10,422 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:54:10,422 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:54:10,422 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 14:54:10,423 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:54:10,423 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:54:10,423 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:54:10,423 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:54:10,423 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:54:10,424 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2020-10-27 14:54:10,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:54:10,428 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:54:10,429 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:54:10,429 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:54:10,429 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:54:10,430 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 14:54:10,430 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:54:10,430 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 14:54:10,430 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:54:10,430 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 14:54:10,430 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:54:10,431 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2020-10-27 14:54:10,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:54:10,433 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:54:10,434 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:54:10,435 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:54:10,435 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:54:10,435 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 14:54:10,435 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:54:10,435 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 14:54:10,435 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:54:10,435 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 14:54:10,436 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:54:10,461 INFO L134 CoverageAnalysis]: Checked inductivity of 92 backedges. 9 proven. 34 refuted. 0 times theorem prover too weak. 49 trivial. 0 not checked. [2020-10-27 14:54:10,462 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [445913457] [2020-10-27 14:54:10,462 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 14:54:10,462 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-10-27 14:54:10,462 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1101509839] [2020-10-27 14:54:10,462 INFO L461 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-27 14:54:10,463 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 14:54:10,463 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-27 14:54:10,463 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=128, Unknown=0, NotChecked=0, Total=156 [2020-10-27 14:54:10,463 INFO L87 Difference]: Start difference. First operand 169 states and 193 transitions. Second operand 13 states. [2020-10-27 14:54:11,289 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 14:54:11,289 INFO L93 Difference]: Finished difference Result 200 states and 226 transitions. [2020-10-27 14:54:11,291 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-27 14:54:11,291 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 79 [2020-10-27 14:54:11,291 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 14:54:11,292 INFO L225 Difference]: With dead ends: 200 [2020-10-27 14:54:11,292 INFO L226 Difference]: Without dead ends: 173 [2020-10-27 14:54:11,292 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 9 SyntacticMatches, 12 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 88 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=85, Invalid=295, Unknown=0, NotChecked=0, Total=380 [2020-10-27 14:54:11,293 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 173 states. [2020-10-27 14:54:11,314 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 173 to 104. [2020-10-27 14:54:11,314 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 104 states. [2020-10-27 14:54:11,315 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 104 states to 104 states and 113 transitions. [2020-10-27 14:54:11,315 INFO L78 Accepts]: Start accepts. Automaton has 104 states and 113 transitions. Word has length 79 [2020-10-27 14:54:11,315 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 14:54:11,315 INFO L481 AbstractCegarLoop]: Abstraction has 104 states and 113 transitions. [2020-10-27 14:54:11,315 INFO L482 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-27 14:54:11,316 INFO L276 IsEmpty]: Start isEmpty. Operand 104 states and 113 transitions. [2020-10-27 14:54:11,316 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2020-10-27 14:54:11,316 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 14:54:11,316 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 4, 4, 4, 4, 4, 4, 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] [2020-10-27 14:54:11,317 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2020-10-27 14:54:11,317 INFO L429 AbstractCegarLoop]: === Iteration 24 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 14:54:11,317 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 14:54:11,317 INFO L82 PathProgramCache]: Analyzing trace with hash 1983748530, now seen corresponding path program 8 times [2020-10-27 14:54:11,317 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 14:54:11,317 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1355681] [2020-10-27 14:54:11,318 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 14:54:11,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:54:11,347 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:54:11,386 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:54:11,454 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:54:11,717 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:54:12,360 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:54:12,464 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:54:12,961 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:54:13,157 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:54:13,248 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:54:13,659 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:54:16,337 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:54:16,337 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 105 [2020-10-27 14:54:16,338 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 10 [2020-10-27 14:54:16,338 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-10-27 14:54:16,338 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:54:16,338 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 25 [2020-10-27 14:54:16,338 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-27 14:54:16,338 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 78 [2020-10-27 14:54:16,338 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:54:17,341 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 14:54:17,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:54:17,345 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:54:17,347 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:54:17,347 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 14:54:17,347 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:54:17,347 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 14:54:17,347 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:54:17,347 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:54:17,347 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:54:17,347 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:54:17,347 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:54:17,349 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 14:54:17,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:54:17,350 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:54:17,353 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:54:17,353 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:54:17,353 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:54:17,353 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 14:54:17,353 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:54:17,353 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 14:54:17,354 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:54:17,354 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 14:54:17,354 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:54:17,355 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-10-27 14:54:17,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:54:17,357 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:54:17,359 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:54:17,359 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:54:17,359 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:54:17,359 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 14:54:17,359 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:54:17,359 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 14:54:17,359 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:54:17,359 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 14:54:17,359 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:54:17,360 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2020-10-27 14:54:17,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:54:17,362 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:54:17,364 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:54:17,364 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:54:17,365 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:54:17,365 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 14:54:17,365 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:54:17,365 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 14:54:17,365 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:54:17,365 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 14:54:17,365 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:54:17,366 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2020-10-27 14:54:17,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:54:17,368 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:54:17,371 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:54:17,371 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:54:17,371 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:54:17,371 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 14:54:17,372 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:54:17,372 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 14:54:17,372 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:54:17,372 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 14:54:17,372 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:54:17,373 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2020-10-27 14:54:17,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:54:17,375 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:54:17,377 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:54:17,377 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:54:17,378 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:54:17,378 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 14:54:17,378 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:54:17,378 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 14:54:17,378 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 14:54:17,378 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 14:54:17,378 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:54:17,461 INFO L134 CoverageAnalysis]: Checked inductivity of 104 backedges. 36 proven. 53 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2020-10-27 14:54:17,461 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1355681] [2020-10-27 14:54:17,462 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 14:54:17,462 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24] total 24 [2020-10-27 14:54:17,462 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [728529682] [2020-10-27 14:54:17,462 INFO L461 AbstractCegarLoop]: Interpolant automaton has 24 states [2020-10-27 14:54:17,462 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 14:54:17,463 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2020-10-27 14:54:17,463 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=87, Invalid=465, Unknown=0, NotChecked=0, Total=552 [2020-10-27 14:54:17,463 INFO L87 Difference]: Start difference. First operand 104 states and 113 transitions. Second operand 24 states. [2020-10-27 14:54:21,051 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 14:54:21,052 INFO L93 Difference]: Finished difference Result 195 states and 228 transitions. [2020-10-27 14:54:21,052 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2020-10-27 14:54:21,053 INFO L78 Accepts]: Start accepts. Automaton has 24 states. Word has length 85 [2020-10-27 14:54:21,053 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 14:54:21,054 INFO L225 Difference]: With dead ends: 195 [2020-10-27 14:54:21,055 INFO L226 Difference]: Without dead ends: 178 [2020-10-27 14:54:21,056 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 72 GetRequests, 13 SyntacticMatches, 3 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 871 ImplicationChecksByTransitivity, 3.1s TimeCoverageRelationStatistics Valid=491, Invalid=2815, Unknown=0, NotChecked=0, Total=3306 [2020-10-27 14:54:21,057 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 178 states. [2020-10-27 14:54:21,098 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 178 to 131. [2020-10-27 14:54:21,099 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 131 states. [2020-10-27 14:54:21,100 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 131 states to 131 states and 147 transitions. [2020-10-27 14:54:21,100 INFO L78 Accepts]: Start accepts. Automaton has 131 states and 147 transitions. Word has length 85 [2020-10-27 14:54:21,100 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 14:54:21,100 INFO L481 AbstractCegarLoop]: Abstraction has 131 states and 147 transitions. [2020-10-27 14:54:21,100 INFO L482 AbstractCegarLoop]: Interpolant automaton has 24 states. [2020-10-27 14:54:21,101 INFO L276 IsEmpty]: Start isEmpty. Operand 131 states and 147 transitions. [2020-10-27 14:54:21,101 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2020-10-27 14:54:21,101 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 14:54:21,102 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 14:54:21,102 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2020-10-27 14:54:21,102 INFO L429 AbstractCegarLoop]: === Iteration 25 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 14:54:21,102 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 14:54:21,102 INFO L82 PathProgramCache]: Analyzing trace with hash 703884852, now seen corresponding path program 9 times [2020-10-27 14:54:21,103 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 14:54:21,103 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1013891899] [2020-10-27 14:54:21,103 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 14:54:21,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:54:21,131 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:54:21,194 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:54:21,273 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:54:21,320 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:54:21,633 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:54:21,773 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:54:21,823 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:54:22,296 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:54:22,397 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:54:22,469 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:54:22,569 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:54:22,830 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:54:22,911 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:54:23,683 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:54:23,844 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:54:25,165 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:54:25,308 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:54:25,991 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:54:26,037 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:54:26,122 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:54:26,122 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 105 [2020-10-27 14:54:26,122 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 19 [2020-10-27 14:54:26,122 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-10-27 14:54:26,122 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:54:26,122 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 16 [2020-10-27 14:54:26,122 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 35 [2020-10-27 14:54:26,123 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 55 [2020-10-27 14:54:26,123 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:54:26,369 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 14:54:26,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:54:26,374 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:54:26,376 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:54:26,377 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 14:54:26,377 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:54:26,377 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 14:54:26,377 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:54:26,377 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:54:26,377 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:54:26,377 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:54:26,377 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:54:26,379 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 14:54:26,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:54:26,380 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:54:26,382 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:54:26,382 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:54:26,382 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:54:26,382 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 14:54:26,382 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:54:26,382 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:54:26,382 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:54:26,383 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:54:26,383 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:54:26,384 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-10-27 14:54:26,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:54:26,386 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:54:26,387 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:54:26,387 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:54:26,387 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:54:26,388 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 14:54:26,388 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:54:26,388 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 14:54:26,388 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:54:26,388 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 14:54:26,388 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:54:26,389 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2020-10-27 14:54:26,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:54:26,391 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:54:26,392 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:54:26,392 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:54:26,392 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:54:26,392 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 14:54:26,392 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:54:26,393 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 14:54:26,393 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:54:26,393 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 14:54:26,393 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:54:26,394 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2020-10-27 14:54:26,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:54:26,395 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:54:26,396 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:54:26,396 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:54:26,396 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:54:26,396 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 14:54:26,396 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:54:26,397 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 14:54:26,397 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:54:26,397 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 14:54:26,397 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:54:26,397 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2020-10-27 14:54:26,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:54:26,399 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:54:26,401 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:54:26,401 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:54:26,401 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:54:26,401 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 14:54:26,401 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:54:26,401 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 14:54:26,401 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 14:54:26,401 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 14:54:26,402 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:54:26,460 INFO L134 CoverageAnalysis]: Checked inductivity of 104 backedges. 37 proven. 26 refuted. 0 times theorem prover too weak. 41 trivial. 0 not checked. [2020-10-27 14:54:26,460 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1013891899] [2020-10-27 14:54:26,460 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 14:54:26,460 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2020-10-27 14:54:26,461 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1971965949] [2020-10-27 14:54:26,461 INFO L461 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-27 14:54:26,461 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 14:54:26,461 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-27 14:54:26,462 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=176, Unknown=0, NotChecked=0, Total=210 [2020-10-27 14:54:26,462 INFO L87 Difference]: Start difference. First operand 131 states and 147 transitions. Second operand 15 states. [2020-10-27 14:54:27,616 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 14:54:27,617 INFO L93 Difference]: Finished difference Result 175 states and 199 transitions. [2020-10-27 14:54:27,618 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-10-27 14:54:27,618 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 85 [2020-10-27 14:54:27,618 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 14:54:27,619 INFO L225 Difference]: With dead ends: 175 [2020-10-27 14:54:27,620 INFO L226 Difference]: Without dead ends: 147 [2020-10-27 14:54:27,620 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 16 SyntacticMatches, 1 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 162 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=128, Invalid=684, Unknown=0, NotChecked=0, Total=812 [2020-10-27 14:54:27,621 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 147 states. [2020-10-27 14:54:27,659 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 147 to 145. [2020-10-27 14:54:27,659 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 145 states. [2020-10-27 14:54:27,660 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 145 states to 145 states and 162 transitions. [2020-10-27 14:54:27,660 INFO L78 Accepts]: Start accepts. Automaton has 145 states and 162 transitions. Word has length 85 [2020-10-27 14:54:27,661 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 14:54:27,661 INFO L481 AbstractCegarLoop]: Abstraction has 145 states and 162 transitions. [2020-10-27 14:54:27,661 INFO L482 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-27 14:54:27,661 INFO L276 IsEmpty]: Start isEmpty. Operand 145 states and 162 transitions. [2020-10-27 14:54:27,662 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2020-10-27 14:54:27,662 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 14:54:27,662 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 14:54:27,662 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2020-10-27 14:54:27,662 INFO L429 AbstractCegarLoop]: === Iteration 26 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 14:54:27,663 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 14:54:27,663 INFO L82 PathProgramCache]: Analyzing trace with hash 631498294, now seen corresponding path program 10 times [2020-10-27 14:54:27,663 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 14:54:27,663 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [75095726] [2020-10-27 14:54:27,663 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 14:54:27,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:54:27,696 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:54:27,781 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:54:28,093 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:54:28,121 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:54:28,637 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:54:29,087 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:54:29,433 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:54:30,195 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:54:30,345 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:54:30,430 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:54:32,684 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:54:32,685 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 105 [2020-10-27 14:54:32,685 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 10 [2020-10-27 14:54:32,685 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-10-27 14:54:32,685 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:54:32,685 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 24 [2020-10-27 14:54:32,685 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 30 [2020-10-27 14:54:32,685 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 66 [2020-10-27 14:54:32,685 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:54:32,985 WARN L193 SmtUtils]: Spent 149.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 44 [2020-10-27 14:54:33,450 WARN L193 SmtUtils]: Spent 113.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 43 [2020-10-27 14:54:33,633 WARN L193 SmtUtils]: Spent 156.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 39 [2020-10-27 14:54:33,876 WARN L193 SmtUtils]: Spent 150.00 ms on a formula simplification. DAG size of input: 52 DAG size of output: 44 [2020-10-27 14:54:34,163 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 14:54:34,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:54:34,166 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:54:34,168 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:54:34,168 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 14:54:34,168 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:54:34,168 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 14:54:34,168 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:54:34,168 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:54:34,169 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:54:34,169 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:54:34,169 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:54:34,170 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 14:54:34,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:54:34,171 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:54:34,172 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:54:34,172 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:54:34,172 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:54:34,172 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 14:54:34,172 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:54:34,172 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:54:34,172 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:54:34,172 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:54:34,173 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:54:34,174 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-10-27 14:54:34,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:54:34,175 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:54:34,177 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:54:34,177 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:54:34,177 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:54:34,178 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 14:54:34,178 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:54:34,178 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 14:54:34,178 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:54:34,178 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 14:54:34,178 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:54:34,179 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2020-10-27 14:54:34,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:54:34,181 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:54:34,182 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:54:34,182 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:54:34,183 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:54:34,183 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 14:54:34,183 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:54:34,183 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 14:54:34,183 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:54:34,183 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 14:54:34,183 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:54:34,184 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2020-10-27 14:54:34,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:54:34,185 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:54:34,187 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:54:34,187 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:54:34,187 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:54:34,187 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 14:54:34,187 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:54:34,187 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 14:54:34,187 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:54:34,187 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 14:54:34,187 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:54:34,188 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2020-10-27 14:54:34,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:54:34,189 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:54:34,191 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:54:34,191 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:54:34,191 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:54:34,191 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 14:54:34,191 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:54:34,191 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 14:54:34,191 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:54:34,191 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 14:54:34,191 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:54:34,222 INFO L134 CoverageAnalysis]: Checked inductivity of 104 backedges. 21 proven. 53 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2020-10-27 14:54:34,222 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [75095726] [2020-10-27 14:54:34,222 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 14:54:34,222 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19] total 19 [2020-10-27 14:54:34,222 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1200696187] [2020-10-27 14:54:34,223 INFO L461 AbstractCegarLoop]: Interpolant automaton has 19 states [2020-10-27 14:54:34,223 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 14:54:34,223 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2020-10-27 14:54:34,223 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=296, Unknown=0, NotChecked=0, Total=342 [2020-10-27 14:54:34,223 INFO L87 Difference]: Start difference. First operand 145 states and 162 transitions. Second operand 19 states. [2020-10-27 14:54:34,734 WARN L193 SmtUtils]: Spent 210.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 57 [2020-10-27 14:54:35,325 WARN L193 SmtUtils]: Spent 130.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 46 [2020-10-27 14:54:35,699 WARN L193 SmtUtils]: Spent 228.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 57 [2020-10-27 14:54:36,008 WARN L193 SmtUtils]: Spent 252.00 ms on a formula simplification. DAG size of input: 91 DAG size of output: 60 [2020-10-27 14:54:36,533 WARN L193 SmtUtils]: Spent 124.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 39 [2020-10-27 14:54:37,798 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 14:54:37,798 INFO L93 Difference]: Finished difference Result 196 states and 223 transitions. [2020-10-27 14:54:37,799 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2020-10-27 14:54:37,799 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 85 [2020-10-27 14:54:37,800 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 14:54:37,801 INFO L225 Difference]: With dead ends: 196 [2020-10-27 14:54:37,801 INFO L226 Difference]: Without dead ends: 179 [2020-10-27 14:54:37,802 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 13 SyntacticMatches, 7 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 306 ImplicationChecksByTransitivity, 3.6s TimeCoverageRelationStatistics Valid=195, Invalid=1287, Unknown=0, NotChecked=0, Total=1482 [2020-10-27 14:54:37,803 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 179 states. [2020-10-27 14:54:37,848 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 179 to 168. [2020-10-27 14:54:37,848 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 168 states. [2020-10-27 14:54:37,849 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 168 states to 168 states and 189 transitions. [2020-10-27 14:54:37,850 INFO L78 Accepts]: Start accepts. Automaton has 168 states and 189 transitions. Word has length 85 [2020-10-27 14:54:37,850 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 14:54:37,850 INFO L481 AbstractCegarLoop]: Abstraction has 168 states and 189 transitions. [2020-10-27 14:54:37,850 INFO L482 AbstractCegarLoop]: Interpolant automaton has 19 states. [2020-10-27 14:54:37,850 INFO L276 IsEmpty]: Start isEmpty. Operand 168 states and 189 transitions. [2020-10-27 14:54:37,851 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2020-10-27 14:54:37,851 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 14:54:37,852 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 5, 5, 5, 5, 5, 3, 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] [2020-10-27 14:54:37,852 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2020-10-27 14:54:37,852 INFO L429 AbstractCegarLoop]: === Iteration 27 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 14:54:37,852 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 14:54:37,853 INFO L82 PathProgramCache]: Analyzing trace with hash -551610365, now seen corresponding path program 11 times [2020-10-27 14:54:37,853 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 14:54:37,853 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [914896143] [2020-10-27 14:54:37,853 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 14:54:37,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:54:37,885 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:54:37,936 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:54:38,238 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:54:38,302 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:54:39,306 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:54:39,354 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:54:39,993 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:54:40,016 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:54:40,441 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:54:40,648 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:54:42,892 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:54:42,893 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 116 [2020-10-27 14:54:42,893 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 10 [2020-10-27 14:54:42,893 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5019 [2020-10-27 14:54:42,893 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:54:42,893 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-10-27 14:54:42,893 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 35 [2020-10-27 14:54:42,893 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 77 [2020-10-27 14:54:42,893 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:54:43,231 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 14:54:43,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:54:43,234 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:54:43,236 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:54:43,236 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 14:54:43,236 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:54:43,236 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 14:54:43,237 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:54:43,237 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:54:43,237 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:54:43,237 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:54:43,237 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:54:43,239 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 14:54:43,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:54:43,240 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:54:43,241 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:54:43,241 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:54:43,241 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:54:43,241 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 14:54:43,241 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:54:43,241 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:54:43,241 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:54:43,241 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:54:43,241 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:54:43,242 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-10-27 14:54:43,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:54:43,243 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:54:43,245 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:54:43,245 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:54:43,245 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:54:43,245 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 14:54:43,245 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:54:43,245 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 14:54:43,245 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:54:43,245 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 14:54:43,245 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:54:43,246 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2020-10-27 14:54:43,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:54:43,247 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:54:43,249 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:54:43,249 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:54:43,249 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:54:43,249 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 14:54:43,250 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:54:43,250 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 14:54:43,250 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:54:43,250 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 14:54:43,250 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:54:43,251 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2020-10-27 14:54:43,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:54:43,253 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:54:43,254 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:54:43,254 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:54:43,254 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:54:43,254 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 14:54:43,254 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:54:43,255 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 14:54:43,255 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:54:43,255 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 14:54:43,255 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:54:43,256 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2020-10-27 14:54:43,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:54:43,257 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:54:43,259 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:54:43,259 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:54:43,259 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:54:43,259 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 14:54:43,259 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:54:43,260 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 14:54:43,260 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:54:43,260 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 14:54:43,260 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:54:43,261 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2020-10-27 14:54:43,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:54:43,263 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:54:43,264 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:54:43,264 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:54:43,265 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:54:43,265 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 14:54:43,265 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:54:43,265 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 14:54:43,265 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:54:43,265 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 14:54:43,265 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:54:43,284 INFO L134 CoverageAnalysis]: Checked inductivity of 145 backedges. 10 proven. 80 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2020-10-27 14:54:43,284 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [914896143] [2020-10-27 14:54:43,284 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 14:54:43,284 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17] total 17 [2020-10-27 14:54:43,284 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [586109010] [2020-10-27 14:54:43,285 INFO L461 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-27 14:54:43,285 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 14:54:43,285 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-27 14:54:43,285 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=238, Unknown=0, NotChecked=0, Total=272 [2020-10-27 14:54:43,285 INFO L87 Difference]: Start difference. First operand 168 states and 189 transitions. Second operand 17 states. [2020-10-27 14:54:45,157 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 14:54:45,158 INFO L93 Difference]: Finished difference Result 211 states and 243 transitions. [2020-10-27 14:54:45,159 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2020-10-27 14:54:45,159 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 94 [2020-10-27 14:54:45,159 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 14:54:45,161 INFO L225 Difference]: With dead ends: 211 [2020-10-27 14:54:45,161 INFO L226 Difference]: Without dead ends: 207 [2020-10-27 14:54:45,162 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 206 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=137, Invalid=1123, Unknown=0, NotChecked=0, Total=1260 [2020-10-27 14:54:45,162 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 207 states. [2020-10-27 14:54:45,218 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 207 to 194. [2020-10-27 14:54:45,218 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 194 states. [2020-10-27 14:54:45,220 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 194 states to 194 states and 223 transitions. [2020-10-27 14:54:45,220 INFO L78 Accepts]: Start accepts. Automaton has 194 states and 223 transitions. Word has length 94 [2020-10-27 14:54:45,220 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 14:54:45,220 INFO L481 AbstractCegarLoop]: Abstraction has 194 states and 223 transitions. [2020-10-27 14:54:45,221 INFO L482 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-27 14:54:45,221 INFO L276 IsEmpty]: Start isEmpty. Operand 194 states and 223 transitions. [2020-10-27 14:54:45,222 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2020-10-27 14:54:45,222 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 14:54:45,222 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 14:54:45,222 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2020-10-27 14:54:45,222 INFO L429 AbstractCegarLoop]: === Iteration 28 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 14:54:45,223 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 14:54:45,223 INFO L82 PathProgramCache]: Analyzing trace with hash 582974186, now seen corresponding path program 12 times [2020-10-27 14:54:45,223 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 14:54:45,223 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [588661558] [2020-10-27 14:54:45,223 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 14:54:45,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:54:45,263 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:54:45,418 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:54:45,691 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:54:45,828 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:54:45,928 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:54:45,964 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:54:46,207 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:54:46,370 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:54:46,683 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:54:47,265 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:54:48,000 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:54:48,437 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:54:48,965 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:54:50,254 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:54:50,254 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 113 [2020-10-27 14:54:50,254 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 13 [2020-10-27 14:54:50,254 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5007 [2020-10-27 14:54:50,254 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:54:50,255 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 30 [2020-10-27 14:54:50,255 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 31 [2020-10-27 14:54:50,255 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 73 [2020-10-27 14:54:50,273 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 18 [2020-10-27 14:54:50,532 WARN L193 SmtUtils]: Spent 156.00 ms on a formula simplification. DAG size of input: 48 DAG size of output: 46 [2020-10-27 14:54:50,692 WARN L193 SmtUtils]: Spent 139.00 ms on a formula simplification. DAG size of input: 46 DAG size of output: 44 [2020-10-27 14:54:50,871 WARN L193 SmtUtils]: Spent 135.00 ms on a formula simplification. DAG size of input: 43 DAG size of output: 41 [2020-10-27 14:54:51,203 WARN L193 SmtUtils]: Spent 120.00 ms on a formula simplification. DAG size of input: 52 DAG size of output: 42 [2020-10-27 14:54:51,703 WARN L193 SmtUtils]: Spent 123.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 41 [2020-10-27 14:54:51,981 WARN L193 SmtUtils]: Spent 123.00 ms on a formula simplification. DAG size of input: 48 DAG size of output: 40 [2020-10-27 14:54:52,366 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 14:54:52,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:54:52,369 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:54:52,372 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:54:52,372 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 14:54:52,372 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:54:52,372 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 14:54:52,372 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:54:52,372 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:54:52,372 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:54:52,372 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:54:52,372 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:54:52,374 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 14:54:52,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:54:52,375 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:54:52,376 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:54:52,376 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:54:52,376 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:54:52,376 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 14:54:52,376 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:54:52,377 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:54:52,377 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:54:52,377 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:54:52,377 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:54:52,378 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2020-10-27 14:54:52,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:54:52,380 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:54:52,381 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:54:52,381 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:54:52,382 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:54:52,382 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 14:54:52,382 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:54:52,382 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 14:54:52,382 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:54:52,382 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 14:54:52,382 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:54:52,383 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2020-10-27 14:54:52,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:54:52,386 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:54:52,387 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:54:52,387 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:54:52,388 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:54:52,388 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 14:54:52,388 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:54:52,388 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 14:54:52,388 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:54:52,388 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 14:54:52,388 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:54:52,389 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2020-10-27 14:54:52,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:54:52,391 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:54:52,392 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:54:52,393 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:54:52,393 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:54:52,393 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 14:54:52,393 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:54:52,393 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 14:54:52,393 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:54:52,393 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 14:54:52,393 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:54:52,394 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2020-10-27 14:54:52,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:54:52,396 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:54:52,398 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:54:52,398 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:54:52,398 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:54:52,398 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 14:54:52,398 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:54:52,398 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 14:54:52,399 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:54:52,399 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 14:54:52,399 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:54:52,442 INFO L134 CoverageAnalysis]: Checked inductivity of 130 backedges. 29 proven. 69 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2020-10-27 14:54:52,443 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [588661558] [2020-10-27 14:54:52,443 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 14:54:52,443 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22] total 22 [2020-10-27 14:54:52,443 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [395737619] [2020-10-27 14:54:52,443 INFO L461 AbstractCegarLoop]: Interpolant automaton has 22 states [2020-10-27 14:54:52,444 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 14:54:52,444 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2020-10-27 14:54:52,444 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=411, Unknown=0, NotChecked=0, Total=462 [2020-10-27 14:54:52,444 INFO L87 Difference]: Start difference. First operand 194 states and 223 transitions. Second operand 22 states. [2020-10-27 14:54:53,465 WARN L193 SmtUtils]: Spent 128.00 ms on a formula simplification. DAG size of input: 49 DAG size of output: 47 [2020-10-27 14:54:53,769 WARN L193 SmtUtils]: Spent 214.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 67 [2020-10-27 14:54:54,823 WARN L193 SmtUtils]: Spent 188.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 60 [2020-10-27 14:54:55,228 WARN L193 SmtUtils]: Spent 165.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 57 [2020-10-27 14:54:55,590 WARN L193 SmtUtils]: Spent 168.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 56 [2020-10-27 14:54:55,803 WARN L193 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 38 [2020-10-27 14:54:56,004 WARN L193 SmtUtils]: Spent 130.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 44 [2020-10-27 14:54:56,334 WARN L193 SmtUtils]: Spent 117.00 ms on a formula simplification. DAG size of input: 47 DAG size of output: 40 [2020-10-27 14:54:57,938 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 14:54:57,938 INFO L93 Difference]: Finished difference Result 242 states and 282 transitions. [2020-10-27 14:54:57,939 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2020-10-27 14:54:57,939 INFO L78 Accepts]: Start accepts. Automaton has 22 states. Word has length 93 [2020-10-27 14:54:57,940 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 14:54:57,941 INFO L225 Difference]: With dead ends: 242 [2020-10-27 14:54:57,941 INFO L226 Difference]: Without dead ends: 215 [2020-10-27 14:54:57,942 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 71 GetRequests, 13 SyntacticMatches, 10 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 490 ImplicationChecksByTransitivity, 5.4s TimeCoverageRelationStatistics Valid=281, Invalid=2169, Unknown=0, NotChecked=0, Total=2450 [2020-10-27 14:54:57,943 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 215 states. [2020-10-27 14:54:57,992 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 215 to 176. [2020-10-27 14:54:57,992 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 176 states. [2020-10-27 14:54:57,993 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 176 states to 176 states and 202 transitions. [2020-10-27 14:54:57,994 INFO L78 Accepts]: Start accepts. Automaton has 176 states and 202 transitions. Word has length 93 [2020-10-27 14:54:57,994 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 14:54:57,994 INFO L481 AbstractCegarLoop]: Abstraction has 176 states and 202 transitions. [2020-10-27 14:54:57,994 INFO L482 AbstractCegarLoop]: Interpolant automaton has 22 states. [2020-10-27 14:54:57,994 INFO L276 IsEmpty]: Start isEmpty. Operand 176 states and 202 transitions. [2020-10-27 14:54:57,995 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2020-10-27 14:54:57,995 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 14:54:57,995 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 4, 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] [2020-10-27 14:54:57,995 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2020-10-27 14:54:57,996 INFO L429 AbstractCegarLoop]: === Iteration 29 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 14:54:57,996 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 14:54:57,996 INFO L82 PathProgramCache]: Analyzing trace with hash -1917248673, now seen corresponding path program 13 times [2020-10-27 14:54:57,996 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 14:54:57,996 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1741029987] [2020-10-27 14:54:57,997 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 14:54:58,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:54:58,032 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:54:58,066 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:54:58,168 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:54:58,243 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:54:58,726 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:54:59,036 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:55:00,161 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:55:02,403 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:55:03,020 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:55:03,020 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 117 [2020-10-27 14:55:03,020 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-10-27 14:55:03,021 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-10-27 14:55:03,021 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:55:03,021 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-27 14:55:03,021 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-10-27 14:55:03,021 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 36 [2020-10-27 14:55:03,021 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:55:03,475 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 14:55:03,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:55:03,478 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:55:03,481 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:55:03,482 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 14:55:03,482 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:55:03,482 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 14:55:03,482 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:55:03,482 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:55:03,482 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:55:03,482 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:55:03,482 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:55:03,484 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 14:55:03,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:55:03,484 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:55:03,485 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:55:03,485 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:55:03,485 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:55:03,486 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 14:55:03,486 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:55:03,486 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:55:03,486 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:55:03,486 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:55:03,486 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:55:03,487 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2020-10-27 14:55:03,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:55:03,488 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:55:03,489 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:55:03,489 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:55:03,489 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:55:03,489 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-27 14:55:03,490 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:55:03,490 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:55:03,490 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-27 14:55:03,490 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:55:03,490 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:55:03,491 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2020-10-27 14:55:03,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:55:03,492 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:55:03,492 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:55:03,492 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:55:03,493 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:55:03,493 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-27 14:55:03,493 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:55:03,493 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:55:03,493 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-27 14:55:03,493 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:55:03,493 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:55:03,494 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2020-10-27 14:55:03,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:55:03,495 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:55:03,495 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:55:03,496 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:55:03,496 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:55:03,496 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-27 14:55:03,496 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:55:03,496 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:55:03,496 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-27 14:55:03,496 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:55:03,496 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:55:03,497 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-10-27 14:55:03,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:55:03,498 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:55:03,498 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:55:03,498 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:55:03,498 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:55:03,499 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-27 14:55:03,499 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:55:03,499 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:55:03,499 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-27 14:55:03,499 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:55:03,499 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:55:03,513 INFO L134 CoverageAnalysis]: Checked inductivity of 147 backedges. 53 proven. 28 refuted. 0 times theorem prover too weak. 66 trivial. 0 not checked. [2020-10-27 14:55:03,513 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1741029987] [2020-10-27 14:55:03,513 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 14:55:03,513 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2020-10-27 14:55:03,513 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1504552556] [2020-10-27 14:55:03,514 INFO L461 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-10-27 14:55:03,514 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 14:55:03,514 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-10-27 14:55:03,514 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=137, Unknown=0, NotChecked=0, Total=182 [2020-10-27 14:55:03,515 INFO L87 Difference]: Start difference. First operand 176 states and 202 transitions. Second operand 14 states. [2020-10-27 14:55:05,505 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 14:55:05,505 INFO L93 Difference]: Finished difference Result 365 states and 423 transitions. [2020-10-27 14:55:05,506 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2020-10-27 14:55:05,506 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 97 [2020-10-27 14:55:05,507 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 14:55:05,511 INFO L225 Difference]: With dead ends: 365 [2020-10-27 14:55:05,511 INFO L226 Difference]: Without dead ends: 275 [2020-10-27 14:55:05,512 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 185 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=221, Invalid=649, Unknown=0, NotChecked=0, Total=870 [2020-10-27 14:55:05,513 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 275 states. [2020-10-27 14:55:05,562 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 275 to 226. [2020-10-27 14:55:05,563 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 226 states. [2020-10-27 14:55:05,564 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 226 states to 226 states and 256 transitions. [2020-10-27 14:55:05,564 INFO L78 Accepts]: Start accepts. Automaton has 226 states and 256 transitions. Word has length 97 [2020-10-27 14:55:05,564 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 14:55:05,564 INFO L481 AbstractCegarLoop]: Abstraction has 226 states and 256 transitions. [2020-10-27 14:55:05,564 INFO L482 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-10-27 14:55:05,565 INFO L276 IsEmpty]: Start isEmpty. Operand 226 states and 256 transitions. [2020-10-27 14:55:05,565 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2020-10-27 14:55:05,566 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 14:55:05,566 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 7, 6, 6, 6, 6, 6, 4, 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] [2020-10-27 14:55:05,566 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2020-10-27 14:55:05,566 INFO L429 AbstractCegarLoop]: === Iteration 30 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 14:55:05,566 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 14:55:05,566 INFO L82 PathProgramCache]: Analyzing trace with hash 1299881174, now seen corresponding path program 14 times [2020-10-27 14:55:05,566 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 14:55:05,567 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1552613092] [2020-10-27 14:55:05,567 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 14:55:05,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:55:05,596 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:55:05,649 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:55:05,698 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:55:06,125 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:55:06,151 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:55:06,181 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:55:06,215 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:55:06,384 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:55:10,595 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:55:10,596 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 127 [2020-10-27 14:55:10,596 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-10-27 14:55:10,596 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5011 [2020-10-27 14:55:10,596 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:55:10,596 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 18 [2020-10-27 14:55:10,596 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 35 [2020-10-27 14:55:10,596 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 72 [2020-10-27 14:55:10,596 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:55:11,034 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 14:55:11,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:55:11,038 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:55:11,040 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:55:11,040 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 14:55:11,040 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:55:11,041 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 14:55:11,041 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:55:11,041 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:55:11,041 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:55:11,041 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:55:11,041 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:55:11,043 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 14:55:11,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:55:11,044 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:55:11,045 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:55:11,045 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:55:11,045 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:55:11,046 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 14:55:11,046 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:55:11,046 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:55:11,046 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:55:11,047 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:55:11,047 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-27 14:55:11,048 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-10-27 14:55:11,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:55:11,050 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:55:11,052 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:55:11,052 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:55:11,052 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:55:11,052 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 14:55:11,052 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:55:11,053 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 14:55:11,053 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:55:11,053 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 14:55:11,053 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:55:11,054 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2020-10-27 14:55:11,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:55:11,056 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:55:11,060 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:55:11,060 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:55:11,060 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:55:11,060 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-27 14:55:11,060 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:55:11,060 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-27 14:55:11,061 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:55:11,061 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-27 14:55:11,061 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:55:11,134 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2020-10-27 14:55:11,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:55:11,138 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:55:11,139 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:55:11,140 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:55:11,140 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:55:11,140 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 14:55:11,140 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:55:11,140 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 14:55:11,140 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:55:11,140 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 14:55:11,140 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:55:11,141 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2020-10-27 14:55:11,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:55:11,143 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:55:11,145 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:55:11,145 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:55:11,145 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:55:11,145 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 14:55:11,145 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:55:11,145 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 14:55:11,145 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:55:11,145 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 14:55:11,146 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:55:11,147 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2020-10-27 14:55:11,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:55:11,148 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:55:11,150 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:55:11,150 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:55:11,150 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:55:11,150 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 14:55:11,150 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:55:11,150 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 14:55:11,150 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:55:11,150 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 14:55:11,150 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:55:11,151 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-10-27 14:55:11,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:55:11,152 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:55:11,153 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:55:11,153 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:55:11,153 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:55:11,153 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-27 14:55:11,153 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:55:11,153 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:55:11,153 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-27 14:55:11,153 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:55:11,153 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:55:11,173 INFO L134 CoverageAnalysis]: Checked inductivity of 195 backedges. 47 proven. 87 refuted. 0 times theorem prover too weak. 61 trivial. 0 not checked. [2020-10-27 14:55:11,173 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1552613092] [2020-10-27 14:55:11,173 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 14:55:11,173 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20] total 20 [2020-10-27 14:55:11,173 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [422549388] [2020-10-27 14:55:11,174 INFO L461 AbstractCegarLoop]: Interpolant automaton has 20 states [2020-10-27 14:55:11,174 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 14:55:11,174 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2020-10-27 14:55:11,174 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=335, Unknown=0, NotChecked=0, Total=380 [2020-10-27 14:55:11,174 INFO L87 Difference]: Start difference. First operand 226 states and 256 transitions. Second operand 20 states. [2020-10-27 14:55:13,258 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 14:55:13,258 INFO L93 Difference]: Finished difference Result 264 states and 297 transitions. [2020-10-27 14:55:13,259 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-10-27 14:55:13,260 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 103 [2020-10-27 14:55:13,260 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 14:55:13,261 INFO L225 Difference]: With dead ends: 264 [2020-10-27 14:55:13,261 INFO L226 Difference]: Without dead ends: 233 [2020-10-27 14:55:13,262 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 160 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=117, Invalid=875, Unknown=0, NotChecked=0, Total=992 [2020-10-27 14:55:13,263 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 233 states. [2020-10-27 14:55:13,323 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 233 to 226. [2020-10-27 14:55:13,323 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 226 states. [2020-10-27 14:55:13,324 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 226 states to 226 states and 254 transitions. [2020-10-27 14:55:13,325 INFO L78 Accepts]: Start accepts. Automaton has 226 states and 254 transitions. Word has length 103 [2020-10-27 14:55:13,325 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 14:55:13,325 INFO L481 AbstractCegarLoop]: Abstraction has 226 states and 254 transitions. [2020-10-27 14:55:13,325 INFO L482 AbstractCegarLoop]: Interpolant automaton has 20 states. [2020-10-27 14:55:13,325 INFO L276 IsEmpty]: Start isEmpty. Operand 226 states and 254 transitions. [2020-10-27 14:55:13,326 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2020-10-27 14:55:13,326 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 14:55:13,327 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 7, 6, 6, 6, 6, 6, 4, 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] [2020-10-27 14:55:13,327 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2020-10-27 14:55:13,327 INFO L429 AbstractCegarLoop]: === Iteration 31 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 14:55:13,327 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 14:55:13,327 INFO L82 PathProgramCache]: Analyzing trace with hash 20017496, now seen corresponding path program 15 times [2020-10-27 14:55:13,328 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 14:55:13,328 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [981303283] [2020-10-27 14:55:13,328 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 14:55:13,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:55:13,358 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:55:13,422 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:55:13,514 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:55:14,372 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:55:18,354 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:55:18,355 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 127 [2020-10-27 14:55:18,355 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-27 14:55:18,355 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5008 [2020-10-27 14:55:18,355 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:55:18,355 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 16 [2020-10-27 14:55:18,355 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-27 14:55:18,355 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 102 [2020-10-27 14:55:18,355 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:55:19,430 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 14:55:19,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:55:19,433 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:55:19,435 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:55:19,435 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 14:55:19,435 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:55:19,435 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 14:55:19,435 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:55:19,435 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:55:19,435 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:55:19,435 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:55:19,435 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:55:19,437 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 14:55:19,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:55:19,439 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:55:19,444 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:55:19,444 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:55:19,444 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:55:19,444 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-27 14:55:19,445 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:55:19,445 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 14:55:19,445 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:55:19,445 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-27 14:55:19,445 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:55:19,539 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-10-27 14:55:19,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:55:19,541 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:55:19,543 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:55:19,543 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:55:19,543 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:55:19,543 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 14:55:19,543 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:55:19,544 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 14:55:19,544 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:55:19,544 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 14:55:19,544 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:55:19,545 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2020-10-27 14:55:19,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:55:19,547 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:55:19,549 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:55:19,549 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:55:19,549 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:55:19,550 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 14:55:19,550 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:55:19,550 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 14:55:19,550 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:55:19,550 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 14:55:19,550 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:55:19,551 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2020-10-27 14:55:19,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:55:19,553 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:55:19,555 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:55:19,555 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:55:19,555 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:55:19,556 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 14:55:19,556 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:55:19,556 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 14:55:19,556 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:55:19,556 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 14:55:19,556 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:55:19,557 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2020-10-27 14:55:19,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:55:19,559 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:55:19,561 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:55:19,561 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:55:19,561 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:55:19,562 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 14:55:19,562 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:55:19,562 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 14:55:19,562 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:55:19,562 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 14:55:19,562 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:55:19,563 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2020-10-27 14:55:19,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:55:19,565 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:55:19,567 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:55:19,567 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:55:19,567 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:55:19,567 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 14:55:19,567 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:55:19,567 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 14:55:19,567 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:55:19,568 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 14:55:19,568 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:55:19,569 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-10-27 14:55:19,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:55:19,571 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:55:19,572 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:55:19,573 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:55:19,573 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:55:19,573 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 14:55:19,573 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:55:19,573 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 14:55:19,573 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:55:19,573 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 14:55:19,573 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:55:19,601 INFO L134 CoverageAnalysis]: Checked inductivity of 195 backedges. 105 proven. 15 refuted. 0 times theorem prover too weak. 75 trivial. 0 not checked. [2020-10-27 14:55:19,601 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [981303283] [2020-10-27 14:55:19,601 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 14:55:19,602 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18] total 18 [2020-10-27 14:55:19,602 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [596438847] [2020-10-27 14:55:19,602 INFO L461 AbstractCegarLoop]: Interpolant automaton has 18 states [2020-10-27 14:55:19,602 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 14:55:19,602 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2020-10-27 14:55:19,603 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=72, Invalid=234, Unknown=0, NotChecked=0, Total=306 [2020-10-27 14:55:19,603 INFO L87 Difference]: Start difference. First operand 226 states and 254 transitions. Second operand 18 states. [2020-10-27 14:55:21,391 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 14:55:21,391 INFO L93 Difference]: Finished difference Result 295 states and 326 transitions. [2020-10-27 14:55:21,391 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2020-10-27 14:55:21,391 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 103 [2020-10-27 14:55:21,392 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 14:55:21,393 INFO L225 Difference]: With dead ends: 295 [2020-10-27 14:55:21,393 INFO L226 Difference]: Without dead ends: 216 [2020-10-27 14:55:21,394 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 220 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=213, Invalid=843, Unknown=0, NotChecked=0, Total=1056 [2020-10-27 14:55:21,394 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 216 states. [2020-10-27 14:55:21,438 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 216 to 216. [2020-10-27 14:55:21,438 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 216 states. [2020-10-27 14:55:21,439 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 216 states to 216 states and 241 transitions. [2020-10-27 14:55:21,439 INFO L78 Accepts]: Start accepts. Automaton has 216 states and 241 transitions. Word has length 103 [2020-10-27 14:55:21,439 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 14:55:21,440 INFO L481 AbstractCegarLoop]: Abstraction has 216 states and 241 transitions. [2020-10-27 14:55:21,440 INFO L482 AbstractCegarLoop]: Interpolant automaton has 18 states. [2020-10-27 14:55:21,440 INFO L276 IsEmpty]: Start isEmpty. Operand 216 states and 241 transitions. [2020-10-27 14:55:21,441 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2020-10-27 14:55:21,441 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 14:55:21,441 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 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] [2020-10-27 14:55:21,441 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2020-10-27 14:55:21,441 INFO L429 AbstractCegarLoop]: === Iteration 32 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 14:55:21,442 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 14:55:21,442 INFO L82 PathProgramCache]: Analyzing trace with hash -1779212774, now seen corresponding path program 16 times [2020-10-27 14:55:21,442 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 14:55:21,442 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1947818977] [2020-10-27 14:55:21,442 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 14:55:21,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:55:21,478 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:55:21,653 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:55:21,741 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:55:22,310 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:55:22,453 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:55:23,335 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:55:24,534 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:55:25,011 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:55:25,407 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:55:25,542 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:55:26,477 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:55:26,477 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 121 [2020-10-27 14:55:26,477 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 10 [2020-10-27 14:55:26,478 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5014 [2020-10-27 14:55:26,478 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:55:26,478 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 26 [2020-10-27 14:55:26,478 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-10-27 14:55:26,478 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 91 [2020-10-27 14:55:26,478 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:55:27,114 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 14:55:27,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:55:27,117 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:55:27,119 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:55:27,119 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 14:55:27,119 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:55:27,119 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 14:55:27,119 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:55:27,119 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:55:27,119 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:55:27,119 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:55:27,119 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:55:27,121 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 14:55:27,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:55:27,121 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:55:27,122 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:55:27,122 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:55:27,123 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:55:27,123 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 14:55:27,123 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:55:27,123 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:55:27,123 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:55:27,123 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:55:27,123 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:55:27,124 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2020-10-27 14:55:27,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:55:27,125 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:55:27,127 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:55:27,127 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:55:27,127 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:55:27,127 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 14:55:27,127 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:55:27,127 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 14:55:27,128 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:55:27,128 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 14:55:27,128 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:55:27,128 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2020-10-27 14:55:27,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:55:27,130 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:55:27,132 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:55:27,132 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:55:27,132 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:55:27,132 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 14:55:27,132 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:55:27,133 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 14:55:27,133 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:55:27,133 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 14:55:27,133 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:55:27,134 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2020-10-27 14:55:27,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:55:27,135 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:55:27,137 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:55:27,138 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:55:27,138 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:55:27,138 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 14:55:27,138 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:55:27,138 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 14:55:27,138 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:55:27,138 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 14:55:27,138 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:55:27,139 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2020-10-27 14:55:27,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:55:27,141 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:55:27,143 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:55:27,143 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:55:27,143 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:55:27,143 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 14:55:27,143 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:55:27,144 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 14:55:27,144 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:55:27,144 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 14:55:27,144 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:55:27,182 INFO L134 CoverageAnalysis]: Checked inductivity of 164 backedges. 15 proven. 80 refuted. 0 times theorem prover too weak. 69 trivial. 0 not checked. [2020-10-27 14:55:27,182 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1947818977] [2020-10-27 14:55:27,182 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 14:55:27,182 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2020-10-27 14:55:27,183 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [488758354] [2020-10-27 14:55:27,183 INFO L461 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-10-27 14:55:27,183 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 14:55:27,183 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-10-27 14:55:27,184 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=207, Unknown=0, NotChecked=0, Total=240 [2020-10-27 14:55:27,184 INFO L87 Difference]: Start difference. First operand 216 states and 241 transitions. Second operand 16 states. [2020-10-27 14:55:28,846 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 14:55:28,847 INFO L93 Difference]: Finished difference Result 246 states and 272 transitions. [2020-10-27 14:55:28,848 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2020-10-27 14:55:28,848 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 101 [2020-10-27 14:55:28,848 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 14:55:28,849 INFO L225 Difference]: With dead ends: 246 [2020-10-27 14:55:28,849 INFO L226 Difference]: Without dead ends: 218 [2020-10-27 14:55:28,850 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 13 SyntacticMatches, 12 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 184 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=143, Invalid=787, Unknown=0, NotChecked=0, Total=930 [2020-10-27 14:55:28,851 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 218 states. [2020-10-27 14:55:28,901 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 218 to 215. [2020-10-27 14:55:28,901 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 215 states. [2020-10-27 14:55:28,902 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 215 states to 215 states and 237 transitions. [2020-10-27 14:55:28,902 INFO L78 Accepts]: Start accepts. Automaton has 215 states and 237 transitions. Word has length 101 [2020-10-27 14:55:28,902 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 14:55:28,903 INFO L481 AbstractCegarLoop]: Abstraction has 215 states and 237 transitions. [2020-10-27 14:55:28,903 INFO L482 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-10-27 14:55:28,903 INFO L276 IsEmpty]: Start isEmpty. Operand 215 states and 237 transitions. [2020-10-27 14:55:28,904 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2020-10-27 14:55:28,904 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 14:55:28,904 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 7, 6, 6, 6, 6, 6, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 14:55:28,904 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2020-10-27 14:55:28,904 INFO L429 AbstractCegarLoop]: === Iteration 33 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 14:55:28,904 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 14:55:28,904 INFO L82 PathProgramCache]: Analyzing trace with hash 702333196, now seen corresponding path program 17 times [2020-10-27 14:55:28,905 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 14:55:28,905 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1201576739] [2020-10-27 14:55:28,905 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 14:55:28,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:55:28,935 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:55:29,028 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:55:29,193 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:55:29,285 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:55:29,464 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:55:30,805 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:55:31,640 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:55:33,306 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:55:33,416 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:55:33,932 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:55:33,932 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 135 [2020-10-27 14:55:33,932 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-10-27 14:55:33,932 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5009 [2020-10-27 14:55:33,932 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:55:33,932 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 29 [2020-10-27 14:55:33,932 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 34 [2020-10-27 14:55:33,932 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 92 [2020-10-27 14:55:33,932 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:55:34,304 WARN L193 SmtUtils]: Spent 180.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 44 [2020-10-27 14:55:35,029 WARN L193 SmtUtils]: Spent 120.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 43 [2020-10-27 14:55:35,225 WARN L193 SmtUtils]: Spent 166.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 39 [2020-10-27 14:55:35,485 WARN L193 SmtUtils]: Spent 160.00 ms on a formula simplification. DAG size of input: 52 DAG size of output: 46 [2020-10-27 14:55:35,904 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 14:55:35,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:55:35,906 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:55:35,908 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:55:35,908 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 14:55:35,908 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:55:35,908 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 14:55:35,908 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:55:35,908 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:55:35,908 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:55:35,909 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:55:35,909 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:55:35,910 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 14:55:35,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:55:35,910 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:55:35,911 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:55:35,911 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:55:35,912 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:55:35,912 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-27 14:55:35,912 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:55:35,912 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:55:35,912 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:55:35,912 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:55:35,912 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:55:35,913 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2020-10-27 14:55:35,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:55:35,914 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:55:35,916 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:55:35,917 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:55:35,917 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:55:35,917 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 14:55:35,917 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:55:35,917 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 14:55:35,917 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:55:35,917 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 14:55:35,917 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:55:35,922 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2020-10-27 14:55:35,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:55:35,924 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:55:35,925 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:55:35,926 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:55:35,926 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:55:35,926 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 14:55:35,926 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:55:35,926 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 14:55:35,926 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:55:35,926 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 14:55:35,926 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:55:35,932 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2020-10-27 14:55:35,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:55:35,934 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:55:35,936 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:55:35,936 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:55:35,936 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:55:35,936 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 14:55:35,936 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:55:35,936 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 14:55:35,936 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:55:35,936 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 14:55:35,937 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:55:35,937 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2020-10-27 14:55:35,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:55:35,939 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:55:35,940 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:55:35,940 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:55:35,940 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:55:35,940 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 14:55:35,940 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:55:35,940 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 14:55:35,940 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:55:35,941 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 14:55:35,941 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:55:35,941 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2020-10-27 14:55:35,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:55:35,943 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:55:35,944 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:55:35,944 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:55:35,944 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:55:35,944 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 14:55:35,944 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:55:35,944 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 14:55:35,944 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:55:35,944 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 14:55:35,944 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:55:35,945 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2020-10-27 14:55:35,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:55:35,946 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:55:35,947 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:55:35,948 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:55:35,948 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:55:35,948 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 14:55:35,948 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:55:35,948 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 14:55:35,948 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:55:35,948 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 14:55:35,948 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:55:35,989 INFO L134 CoverageAnalysis]: Checked inductivity of 221 backedges. 31 proven. 115 refuted. 0 times theorem prover too weak. 75 trivial. 0 not checked. [2020-10-27 14:55:35,990 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1201576739] [2020-10-27 14:55:35,990 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 14:55:35,990 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22] total 22 [2020-10-27 14:55:35,990 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [278009942] [2020-10-27 14:55:35,990 INFO L461 AbstractCegarLoop]: Interpolant automaton has 22 states [2020-10-27 14:55:35,990 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 14:55:35,991 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2020-10-27 14:55:35,991 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=409, Unknown=0, NotChecked=0, Total=462 [2020-10-27 14:55:35,991 INFO L87 Difference]: Start difference. First operand 215 states and 237 transitions. Second operand 22 states. [2020-10-27 14:55:36,559 WARN L193 SmtUtils]: Spent 226.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 57 [2020-10-27 14:55:37,524 WARN L193 SmtUtils]: Spent 127.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 46 [2020-10-27 14:55:37,898 WARN L193 SmtUtils]: Spent 237.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 59 [2020-10-27 14:55:38,240 WARN L193 SmtUtils]: Spent 262.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 61 [2020-10-27 14:55:38,868 WARN L193 SmtUtils]: Spent 158.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 39 [2020-10-27 14:55:40,948 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 14:55:40,948 INFO L93 Difference]: Finished difference Result 242 states and 267 transitions. [2020-10-27 14:55:40,950 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2020-10-27 14:55:40,950 INFO L78 Accepts]: Start accepts. Automaton has 22 states. Word has length 111 [2020-10-27 14:55:40,950 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 14:55:40,952 INFO L225 Difference]: With dead ends: 242 [2020-10-27 14:55:40,952 INFO L226 Difference]: Without dead ends: 225 [2020-10-27 14:55:40,954 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 71 GetRequests, 17 SyntacticMatches, 9 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 457 ImplicationChecksByTransitivity, 4.8s TimeCoverageRelationStatistics Valid=241, Invalid=1921, Unknown=0, NotChecked=0, Total=2162 [2020-10-27 14:55:40,954 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 225 states. [2020-10-27 14:55:41,012 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 225 to 219. [2020-10-27 14:55:41,013 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 219 states. [2020-10-27 14:55:41,014 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 219 states to 219 states and 241 transitions. [2020-10-27 14:55:41,014 INFO L78 Accepts]: Start accepts. Automaton has 219 states and 241 transitions. Word has length 111 [2020-10-27 14:55:41,014 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 14:55:41,014 INFO L481 AbstractCegarLoop]: Abstraction has 219 states and 241 transitions. [2020-10-27 14:55:41,015 INFO L482 AbstractCegarLoop]: Interpolant automaton has 22 states. [2020-10-27 14:55:41,015 INFO L276 IsEmpty]: Start isEmpty. Operand 219 states and 241 transitions. [2020-10-27 14:55:41,016 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2020-10-27 14:55:41,016 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 14:55:41,016 INFO L422 BasicCegarLoop]: trace histogram [8, 8, 8, 7, 7, 7, 7, 7, 4, 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] [2020-10-27 14:55:41,016 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2020-10-27 14:55:41,016 INFO L429 AbstractCegarLoop]: === Iteration 34 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 14:55:41,017 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 14:55:41,017 INFO L82 PathProgramCache]: Analyzing trace with hash -643822099, now seen corresponding path program 18 times [2020-10-27 14:55:41,017 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 14:55:41,017 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1827233356] [2020-10-27 14:55:41,017 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 14:55:41,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:55:41,052 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:55:41,127 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:55:41,563 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:55:41,696 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:55:41,952 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:55:42,109 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:55:42,407 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:55:44,946 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:55:45,018 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:55:45,113 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:55:46,043 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:55:46,043 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 146 [2020-10-27 14:55:46,043 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 10 [2020-10-27 14:55:46,043 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5003 [2020-10-27 14:55:46,043 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:55:46,043 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 18 [2020-10-27 14:55:46,043 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 39 [2020-10-27 14:55:46,043 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 103 [2020-10-27 14:55:46,043 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:55:46,589 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 14:55:46,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:55:46,594 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:55:46,597 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:55:46,597 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 14:55:46,597 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:55:46,597 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 14:55:46,598 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:55:46,598 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:55:46,598 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:55:46,598 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:55:46,598 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:55:46,600 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 14:55:46,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:55:46,602 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:55:46,604 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:55:46,604 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:55:46,605 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:55:46,605 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 14:55:46,605 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:55:46,605 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:55:46,605 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:55:46,605 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:55:46,605 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:55:46,606 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2020-10-27 14:55:46,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:55:46,608 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:55:46,610 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:55:46,610 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:55:46,610 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:55:46,610 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 14:55:46,610 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:55:46,610 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 14:55:46,611 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:55:46,611 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 14:55:46,611 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:55:46,612 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2020-10-27 14:55:46,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:55:46,614 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:55:46,615 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:55:46,616 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:55:46,616 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:55:46,616 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 14:55:46,616 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:55:46,616 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 14:55:46,616 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:55:46,617 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 14:55:46,617 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:55:46,618 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2020-10-27 14:55:46,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:55:46,620 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:55:46,622 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:55:46,623 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:55:46,623 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:55:46,623 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 14:55:46,623 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:55:46,623 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 14:55:46,624 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:55:46,624 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 14:55:46,624 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:55:46,631 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2020-10-27 14:55:46,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:55:46,634 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:55:46,636 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:55:46,636 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:55:46,636 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:55:46,636 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 14:55:46,637 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:55:46,637 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 14:55:46,637 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:55:46,637 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 14:55:46,637 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:55:46,639 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2020-10-27 14:55:46,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:55:46,641 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:55:46,643 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:55:46,643 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:55:46,643 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:55:46,643 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 14:55:46,644 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:55:46,644 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 14:55:46,644 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:55:46,644 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 14:55:46,644 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:55:46,646 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2020-10-27 14:55:46,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:55:46,648 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:55:46,650 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:55:46,650 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:55:46,650 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:55:46,650 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 14:55:46,650 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:55:46,651 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 14:55:46,651 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:55:46,651 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 14:55:46,651 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:55:46,652 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2020-10-27 14:55:46,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:55:46,654 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:55:46,656 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:55:46,657 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:55:46,657 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:55:46,657 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 14:55:46,657 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:55:46,657 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 14:55:46,658 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:55:46,658 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 14:55:46,658 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:55:46,708 INFO L134 CoverageAnalysis]: Checked inductivity of 280 backedges. 14 proven. 154 refuted. 0 times theorem prover too weak. 112 trivial. 0 not checked. [2020-10-27 14:55:46,708 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1827233356] [2020-10-27 14:55:46,708 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 14:55:46,708 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20] total 20 [2020-10-27 14:55:46,709 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [145116291] [2020-10-27 14:55:46,709 INFO L461 AbstractCegarLoop]: Interpolant automaton has 20 states [2020-10-27 14:55:46,709 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 14:55:46,710 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2020-10-27 14:55:46,710 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=340, Unknown=0, NotChecked=0, Total=380 [2020-10-27 14:55:46,710 INFO L87 Difference]: Start difference. First operand 219 states and 241 transitions. Second operand 20 states. [2020-10-27 14:55:49,862 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 14:55:49,862 INFO L93 Difference]: Finished difference Result 285 states and 323 transitions. [2020-10-27 14:55:49,863 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2020-10-27 14:55:49,863 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 120 [2020-10-27 14:55:49,864 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 14:55:49,865 INFO L225 Difference]: With dead ends: 285 [2020-10-27 14:55:49,866 INFO L226 Difference]: Without dead ends: 281 [2020-10-27 14:55:49,867 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 396 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=187, Invalid=1975, Unknown=0, NotChecked=0, Total=2162 [2020-10-27 14:55:49,867 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 281 states. [2020-10-27 14:55:49,925 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 281 to 254. [2020-10-27 14:55:49,925 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 254 states. [2020-10-27 14:55:49,926 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 254 states to 254 states and 285 transitions. [2020-10-27 14:55:49,927 INFO L78 Accepts]: Start accepts. Automaton has 254 states and 285 transitions. Word has length 120 [2020-10-27 14:55:49,927 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 14:55:49,927 INFO L481 AbstractCegarLoop]: Abstraction has 254 states and 285 transitions. [2020-10-27 14:55:49,927 INFO L482 AbstractCegarLoop]: Interpolant automaton has 20 states. [2020-10-27 14:55:49,927 INFO L276 IsEmpty]: Start isEmpty. Operand 254 states and 285 transitions. [2020-10-27 14:55:49,928 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 120 [2020-10-27 14:55:49,928 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 14:55:49,929 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 7, 6, 6, 6, 6, 6, 6, 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] [2020-10-27 14:55:49,929 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2020-10-27 14:55:49,929 INFO L429 AbstractCegarLoop]: === Iteration 35 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 14:55:49,929 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 14:55:49,929 INFO L82 PathProgramCache]: Analyzing trace with hash 1194943418, now seen corresponding path program 19 times [2020-10-27 14:55:49,930 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 14:55:49,930 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1970065697] [2020-10-27 14:55:49,930 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 14:55:49,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:55:49,972 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:55:50,059 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:55:50,165 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:55:52,130 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:55:52,183 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:55:52,311 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:55:52,916 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:55:53,731 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:55:53,921 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:55:54,764 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:55:54,970 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:55:54,970 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 143 [2020-10-27 14:55:54,970 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 10 [2020-10-27 14:55:54,971 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5016 [2020-10-27 14:55:54,971 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:55:54,971 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 28 [2020-10-27 14:55:54,971 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-27 14:55:54,971 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 89 [2020-10-27 14:55:54,971 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:55:55,802 WARN L193 SmtUtils]: Spent 196.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 34 [2020-10-27 14:55:56,055 WARN L193 SmtUtils]: Spent 213.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 39 [2020-10-27 14:55:56,330 WARN L193 SmtUtils]: Spent 188.00 ms on a formula simplification. DAG size of input: 103 DAG size of output: 54 [2020-10-27 14:55:56,597 WARN L193 SmtUtils]: Spent 212.00 ms on a formula simplification. DAG size of input: 107 DAG size of output: 63