/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SequenceOfStatements --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=WIDESTAMONGSMALL --traceabstraction.additional.smt.options tolerance=0.6 --traceabstraction.additional.smt.options log-additional-information=true --traceabstraction.additional.smt.options unknown-allowed=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf language data_model -i ../../../trunk/examples/svcomp/array-crafted/zero_sum_const5.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-28 08:46:56,422 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-28 08:46:56,427 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-28 08:46:56,469 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-28 08:46:56,470 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-28 08:46:56,471 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-28 08:46:56,473 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-28 08:46:56,475 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-28 08:46:56,477 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-28 08:46:56,479 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-28 08:46:56,480 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-28 08:46:56,481 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-28 08:46:56,482 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-28 08:46:56,483 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-28 08:46:56,484 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-28 08:46:56,486 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-28 08:46:56,487 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-28 08:46:56,488 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-28 08:46:56,492 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-28 08:46:56,512 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-28 08:46:56,516 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-28 08:46:56,519 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-28 08:46:56,521 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-28 08:46:56,522 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-28 08:46:56,525 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-28 08:46:56,525 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-28 08:46:56,525 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-28 08:46:56,527 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-28 08:46:56,528 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-28 08:46:56,529 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-28 08:46:56,529 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-28 08:46:56,530 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-28 08:46:56,531 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-28 08:46:56,532 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-28 08:46:56,533 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-28 08:46:56,534 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-28 08:46:56,535 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-28 08:46:56,535 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-28 08:46:56,535 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-28 08:46:56,537 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-28 08:46:56,538 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-28 08:46:56,539 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-28 08:46:56,573 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-28 08:46:56,574 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-28 08:46:56,577 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-28 08:46:56,577 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-28 08:46:56,577 INFO L138 SettingsManager]: * Use SBE=true [2020-10-28 08:46:56,578 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-28 08:46:56,578 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-28 08:46:56,578 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-28 08:46:56,578 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-28 08:46:56,579 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-28 08:46:56,579 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-28 08:46:56,581 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-28 08:46:56,582 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-28 08:46:56,582 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-28 08:46:56,582 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-28 08:46:56,582 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-28 08:46:56,582 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-28 08:46:56,583 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-28 08:46:56,583 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-28 08:46:56,583 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-28 08:46:56,583 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-28 08:46:56,583 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-28 08:46:56,584 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-28 08:46:56,584 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-28 08:46:56,584 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-28 08:46:56,585 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-28 08:46:56,585 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-28 08:46:56,585 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-28 08:46:56,586 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-28 08:46:56,586 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.6;log-additional-information=true;unknown-allowed=true; [2020-10-28 08:46:57,026 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-28 08:46:57,067 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-28 08:46:57,071 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-28 08:46:57,073 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-28 08:46:57,073 INFO L275 PluginConnector]: CDTParser initialized [2020-10-28 08:46:57,080 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/array-crafted/zero_sum_const5.c [2020-10-28 08:46:57,173 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/d7fb91dec/5e67f478bef54817b67edb62238674de/FLAG8872f149e [2020-10-28 08:46:57,818 INFO L306 CDTParser]: Found 1 translation units. [2020-10-28 08:46:57,818 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/array-crafted/zero_sum_const5.c [2020-10-28 08:46:57,831 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/d7fb91dec/5e67f478bef54817b67edb62238674de/FLAG8872f149e [2020-10-28 08:46:58,172 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/d7fb91dec/5e67f478bef54817b67edb62238674de [2020-10-28 08:46:58,176 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-28 08:46:58,185 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-28 08:46:58,191 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-28 08:46:58,191 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-28 08:46:58,205 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-28 08:46:58,207 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 08:46:58" (1/1) ... [2020-10-28 08:46:58,214 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@51874b3e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 08:46:58, skipping insertion in model container [2020-10-28 08:46:58,215 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 08:46:58" (1/1) ... [2020-10-28 08:46:58,230 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-28 08:46:58,267 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-28 08:46:58,468 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-28 08:46:58,481 INFO L203 MainTranslator]: Completed pre-run [2020-10-28 08:46:58,510 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-28 08:46:58,530 INFO L208 MainTranslator]: Completed translation [2020-10-28 08:46:58,531 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 08:46:58 WrapperNode [2020-10-28 08:46:58,532 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-28 08:46:58,533 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-28 08:46:58,533 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-28 08:46:58,534 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-28 08:46:58,550 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 08:46:58" (1/1) ... [2020-10-28 08:46:58,553 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 08:46:58" (1/1) ... [2020-10-28 08:46:58,574 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 08:46:58" (1/1) ... [2020-10-28 08:46:58,575 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 08:46:58" (1/1) ... [2020-10-28 08:46:58,587 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 08:46:58" (1/1) ... [2020-10-28 08:46:58,596 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 08:46:58" (1/1) ... [2020-10-28 08:46:58,599 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 08:46:58" (1/1) ... [2020-10-28 08:46:58,606 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-28 08:46:58,608 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-28 08:46:58,608 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-28 08:46:58,608 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-28 08:46:58,609 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 08:46:58" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-28 08:46:58,696 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-28 08:46:58,696 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-28 08:46:58,696 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-28 08:46:58,697 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-10-28 08:46:58,697 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-10-28 08:46:58,697 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-28 08:46:58,697 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-28 08:46:58,697 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-28 08:46:58,698 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-28 08:46:58,698 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-28 08:46:58,698 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-10-28 08:46:58,698 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-10-28 08:46:58,698 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_long [2020-10-28 08:46:58,698 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-10-28 08:46:58,699 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-28 08:46:58,699 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-10-28 08:46:58,699 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-28 08:46:58,699 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-28 08:46:58,699 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-28 08:46:58,700 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-28 08:46:58,700 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-28 08:46:58,700 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-28 08:46:59,443 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-28 08:46:59,444 INFO L298 CfgBuilder]: Removed 11 assume(true) statements. [2020-10-28 08:46:59,446 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 08:46:59 BoogieIcfgContainer [2020-10-28 08:46:59,447 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-28 08:46:59,453 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-28 08:46:59,454 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-28 08:46:59,459 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-28 08:46:59,460 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.10 08:46:58" (1/3) ... [2020-10-28 08:46:59,464 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6e189f13 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 08:46:59, skipping insertion in model container [2020-10-28 08:46:59,464 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 08:46:58" (2/3) ... [2020-10-28 08:46:59,465 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6e189f13 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 08:46:59, skipping insertion in model container [2020-10-28 08:46:59,465 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 08:46:59" (3/3) ... [2020-10-28 08:46:59,469 INFO L111 eAbstractionObserver]: Analyzing ICFG zero_sum_const5.c [2020-10-28 08:46:59,488 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-28 08:46:59,497 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-28 08:46:59,517 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-28 08:46:59,577 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-28 08:46:59,577 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-28 08:46:59,577 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-28 08:46:59,577 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-28 08:46:59,578 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-28 08:46:59,578 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-28 08:46:59,578 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-28 08:46:59,578 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-28 08:46:59,610 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states. [2020-10-28 08:46:59,621 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2020-10-28 08:46:59,621 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 08:46:59,623 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] [2020-10-28 08:46:59,623 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 08:46:59,636 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 08:46:59,636 INFO L82 PathProgramCache]: Analyzing trace with hash 1455593951, now seen corresponding path program 1 times [2020-10-28 08:46:59,653 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 08:46:59,654 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1982110039] [2020-10-28 08:46:59,655 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 08:46:59,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:46:59,978 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:47:00,093 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:47:00,143 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:47:00,188 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:47:00,274 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:47:00,303 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:47:00,341 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:47:00,386 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:47:00,451 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:47:00,577 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:47:00,968 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:47:02,311 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:47:04,896 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:47:04,897 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 43 [2020-10-28 08:47:04,897 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 12 [2020-10-28 08:47:04,898 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-10-28 08:47:04,901 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:47:04,902 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:47:04,902 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 08:47:04,902 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-10-28 08:47:04,902 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 08:47:04,903 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-10-28 08:47:04,999 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 08:47:05,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:47:05,015 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:47:05,024 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:47:05,025 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 08:47:05,025 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 08:47:05,025 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-28 08:47:05,025 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:47:05,026 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:47:05,026 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 08:47:05,026 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 08:47:05,026 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 08:47:05,026 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 08:47:05,048 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 08:47:05,049 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1982110039] [2020-10-28 08:47:05,052 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 08:47:05,052 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-28 08:47:05,054 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [906777455] [2020-10-28 08:47:05,060 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-28 08:47:05,061 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 08:47:05,082 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-28 08:47:05,083 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-28 08:47:05,086 INFO L87 Difference]: Start difference. First operand 55 states. Second operand 3 states. [2020-10-28 08:47:05,322 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 08:47:05,322 INFO L93 Difference]: Finished difference Result 98 states and 143 transitions. [2020-10-28 08:47:05,323 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-28 08:47:05,324 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 33 [2020-10-28 08:47:05,325 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 08:47:05,333 INFO L225 Difference]: With dead ends: 98 [2020-10-28 08:47:05,333 INFO L226 Difference]: Without dead ends: 45 [2020-10-28 08:47:05,337 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-28 08:47:05,357 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45 states. [2020-10-28 08:47:05,379 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45 to 45. [2020-10-28 08:47:05,381 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 45 states. [2020-10-28 08:47:05,383 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 55 transitions. [2020-10-28 08:47:05,385 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 55 transitions. Word has length 33 [2020-10-28 08:47:05,385 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 08:47:05,386 INFO L481 AbstractCegarLoop]: Abstraction has 45 states and 55 transitions. [2020-10-28 08:47:05,386 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-28 08:47:05,386 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 55 transitions. [2020-10-28 08:47:05,387 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2020-10-28 08:47:05,388 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 08:47:05,388 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] [2020-10-28 08:47:05,388 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-28 08:47:05,389 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 08:47:05,389 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 08:47:05,389 INFO L82 PathProgramCache]: Analyzing trace with hash 69276593, now seen corresponding path program 1 times [2020-10-28 08:47:05,390 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 08:47:05,390 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1003236188] [2020-10-28 08:47:05,390 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 08:47:05,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:47:05,409 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:47:05,427 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:47:05,438 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:47:05,450 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:47:05,465 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:47:05,478 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:47:05,488 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:47:05,532 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:47:05,669 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:47:06,164 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:47:07,866 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:47:10,406 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:47:10,407 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 43 [2020-10-28 08:47:10,415 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 11 [2020-10-28 08:47:10,416 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-10-28 08:47:10,416 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:47:10,416 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:47:10,417 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-28 08:47:10,417 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-28 08:47:10,417 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-10-28 08:47:10,418 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-28 08:47:10,500 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 08:47:10,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:47:10,506 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:47:10,511 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:47:10,512 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 08:47:10,512 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 08:47:10,512 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-28 08:47:10,512 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:47:10,512 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:47:10,513 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 08:47:10,513 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 08:47:10,513 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 08:47:10,513 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 08:47:10,520 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 08:47:10,520 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1003236188] [2020-10-28 08:47:10,521 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 08:47:10,521 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-28 08:47:10,521 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [933684241] [2020-10-28 08:47:10,523 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-28 08:47:10,523 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 08:47:10,524 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-28 08:47:10,525 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-28 08:47:10,525 INFO L87 Difference]: Start difference. First operand 45 states and 55 transitions. Second operand 5 states. [2020-10-28 08:47:10,916 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 08:47:10,916 INFO L93 Difference]: Finished difference Result 103 states and 133 transitions. [2020-10-28 08:47:10,917 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-28 08:47:10,917 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 33 [2020-10-28 08:47:10,917 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 08:47:10,919 INFO L225 Difference]: With dead ends: 103 [2020-10-28 08:47:10,919 INFO L226 Difference]: Without dead ends: 67 [2020-10-28 08:47:10,922 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-10-28 08:47:10,923 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 67 states. [2020-10-28 08:47:10,945 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 67 to 56. [2020-10-28 08:47:10,946 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 56 states. [2020-10-28 08:47:10,947 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 66 transitions. [2020-10-28 08:47:10,948 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 66 transitions. Word has length 33 [2020-10-28 08:47:10,948 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 08:47:10,948 INFO L481 AbstractCegarLoop]: Abstraction has 56 states and 66 transitions. [2020-10-28 08:47:10,948 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-28 08:47:10,948 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 66 transitions. [2020-10-28 08:47:10,950 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2020-10-28 08:47:10,951 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 08:47:10,951 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 08:47:10,951 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-28 08:47:10,952 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 08:47:10,952 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 08:47:10,952 INFO L82 PathProgramCache]: Analyzing trace with hash 1858982343, now seen corresponding path program 1 times [2020-10-28 08:47:10,953 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 08:47:10,953 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1609918775] [2020-10-28 08:47:10,953 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 08:47:10,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:47:10,987 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:47:11,014 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:47:11,039 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:47:11,064 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:47:11,097 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:47:11,116 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:47:11,179 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:47:11,528 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:47:15,979 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:47:15,980 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 65 [2020-10-28 08:47:15,980 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-10-28 08:47:15,980 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5004 [2020-10-28 08:47:15,980 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:47:15,980 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:47:15,981 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 08:47:15,981 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-28 08:47:15,981 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 32 [2020-10-28 08:47:15,981 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 08:47:16,086 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 08:47:16,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:47:16,095 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:47:16,100 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:47:16,100 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 08:47:16,100 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 08:47:16,100 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-28 08:47:16,101 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:47:16,101 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:47:16,101 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 08:47:16,101 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 08:47:16,102 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 08:47:16,102 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 08:47:16,113 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2020-10-28 08:47:16,114 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1609918775] [2020-10-28 08:47:16,115 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 08:47:16,115 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-28 08:47:16,116 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [959943965] [2020-10-28 08:47:16,118 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-28 08:47:16,118 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 08:47:16,121 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-28 08:47:16,123 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-28 08:47:16,123 INFO L87 Difference]: Start difference. First operand 56 states and 66 transitions. Second operand 6 states. [2020-10-28 08:47:16,480 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 08:47:16,480 INFO L93 Difference]: Finished difference Result 124 states and 154 transitions. [2020-10-28 08:47:16,481 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-28 08:47:16,481 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 55 [2020-10-28 08:47:16,481 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 08:47:16,482 INFO L225 Difference]: With dead ends: 124 [2020-10-28 08:47:16,482 INFO L226 Difference]: Without dead ends: 78 [2020-10-28 08:47:16,484 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2020-10-28 08:47:16,484 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 78 states. [2020-10-28 08:47:16,494 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 78 to 78. [2020-10-28 08:47:16,495 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 78 states. [2020-10-28 08:47:16,496 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 78 states to 78 states and 88 transitions. [2020-10-28 08:47:16,497 INFO L78 Accepts]: Start accepts. Automaton has 78 states and 88 transitions. Word has length 55 [2020-10-28 08:47:16,497 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 08:47:16,497 INFO L481 AbstractCegarLoop]: Abstraction has 78 states and 88 transitions. [2020-10-28 08:47:16,499 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-28 08:47:16,500 INFO L276 IsEmpty]: Start isEmpty. Operand 78 states and 88 transitions. [2020-10-28 08:47:16,503 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2020-10-28 08:47:16,503 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 08:47:16,509 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 08:47:16,509 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-28 08:47:16,509 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 08:47:16,510 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 08:47:16,510 INFO L82 PathProgramCache]: Analyzing trace with hash 597490525, now seen corresponding path program 2 times [2020-10-28 08:47:16,511 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 08:47:16,511 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [190934360] [2020-10-28 08:47:16,511 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 08:47:16,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:47:16,769 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:47:17,871 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:47:19,147 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:47:21,333 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:47:22,184 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:47:22,184 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 87 [2020-10-28 08:47:22,184 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-28 08:47:22,185 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5506 [2020-10-28 08:47:22,185 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:47:22,185 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:47:22,185 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 46 [2020-10-28 08:47:22,186 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-28 08:47:22,186 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 71 [2020-10-28 08:47:22,186 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 08:47:23,579 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 08:47:23,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:47:23,585 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:47:23,592 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:47:23,593 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 08:47:23,593 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 08:47:23,593 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-28 08:47:23,593 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:47:23,594 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:47:23,594 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 08:47:23,594 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 08:47:23,594 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 08:47:23,594 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 08:47:23,660 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 0 proven. 40 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-10-28 08:47:23,661 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [190934360] [2020-10-28 08:47:23,661 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 08:47:23,661 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [30] total 30 [2020-10-28 08:47:23,662 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1998918041] [2020-10-28 08:47:23,662 INFO L461 AbstractCegarLoop]: Interpolant automaton has 30 states [2020-10-28 08:47:23,662 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 08:47:23,663 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2020-10-28 08:47:23,664 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=76, Invalid=794, Unknown=0, NotChecked=0, Total=870 [2020-10-28 08:47:23,664 INFO L87 Difference]: Start difference. First operand 78 states and 88 transitions. Second operand 30 states. [2020-10-28 08:47:25,297 WARN L193 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 46 DAG size of output: 44 [2020-10-28 08:47:27,271 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 08:47:27,271 INFO L93 Difference]: Finished difference Result 140 states and 159 transitions. [2020-10-28 08:47:27,276 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2020-10-28 08:47:27,277 INFO L78 Accepts]: Start accepts. Automaton has 30 states. Word has length 77 [2020-10-28 08:47:27,277 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 08:47:27,279 INFO L225 Difference]: With dead ends: 140 [2020-10-28 08:47:27,279 INFO L226 Difference]: Without dead ends: 134 [2020-10-28 08:47:27,281 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 67 GetRequests, 12 SyntacticMatches, 9 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 427 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=206, Invalid=2050, Unknown=0, NotChecked=0, Total=2256 [2020-10-28 08:47:27,282 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 134 states. [2020-10-28 08:47:27,312 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 134 to 131. [2020-10-28 08:47:27,316 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 131 states. [2020-10-28 08:47:27,321 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 131 states to 131 states and 150 transitions. [2020-10-28 08:47:27,321 INFO L78 Accepts]: Start accepts. Automaton has 131 states and 150 transitions. Word has length 77 [2020-10-28 08:47:27,322 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 08:47:27,326 INFO L481 AbstractCegarLoop]: Abstraction has 131 states and 150 transitions. [2020-10-28 08:47:27,326 INFO L482 AbstractCegarLoop]: Interpolant automaton has 30 states. [2020-10-28 08:47:27,326 INFO L276 IsEmpty]: Start isEmpty. Operand 131 states and 150 transitions. [2020-10-28 08:47:27,329 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2020-10-28 08:47:27,331 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 08:47:27,332 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 08:47:27,332 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-28 08:47:27,332 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 08:47:27,332 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 08:47:27,333 INFO L82 PathProgramCache]: Analyzing trace with hash 578659423, now seen corresponding path program 3 times [2020-10-28 08:47:27,333 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 08:47:27,333 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [604615775] [2020-10-28 08:47:27,333 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 08:47:27,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:47:27,383 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:47:27,419 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:47:27,478 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:47:27,544 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:47:27,565 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:47:27,684 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:47:28,963 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:47:32,383 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:47:32,384 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 89 [2020-10-28 08:47:32,384 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-28 08:47:32,384 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5013 [2020-10-28 08:47:32,384 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:47:32,385 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:47:32,385 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-28 08:47:32,385 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 30 [2020-10-28 08:47:32,385 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 32 [2020-10-28 08:47:32,386 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 08:47:32,522 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 08:47:32,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:47:32,526 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:47:32,529 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:47:32,529 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 08:47:32,529 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 08:47:32,529 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 08:47:32,530 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:47:32,530 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:47:32,530 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 08:47:32,530 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 08:47:32,530 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 08:47:32,531 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 08:47:32,553 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 4 proven. 9 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2020-10-28 08:47:32,554 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [604615775] [2020-10-28 08:47:32,554 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 08:47:32,554 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-10-28 08:47:32,554 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1362765728] [2020-10-28 08:47:32,555 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-28 08:47:32,555 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 08:47:32,556 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-28 08:47:32,556 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2020-10-28 08:47:32,556 INFO L87 Difference]: Start difference. First operand 131 states and 150 transitions. Second operand 10 states. [2020-10-28 08:47:33,731 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 08:47:33,732 INFO L93 Difference]: Finished difference Result 267 states and 313 transitions. [2020-10-28 08:47:33,732 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-10-28 08:47:33,732 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 79 [2020-10-28 08:47:33,733 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 08:47:33,735 INFO L225 Difference]: With dead ends: 267 [2020-10-28 08:47:33,735 INFO L226 Difference]: Without dead ends: 160 [2020-10-28 08:47:33,737 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 42 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=78, Invalid=228, Unknown=0, NotChecked=0, Total=306 [2020-10-28 08:47:33,737 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 160 states. [2020-10-28 08:47:33,757 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 160 to 149. [2020-10-28 08:47:33,757 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 149 states. [2020-10-28 08:47:33,759 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 149 states to 149 states and 168 transitions. [2020-10-28 08:47:33,759 INFO L78 Accepts]: Start accepts. Automaton has 149 states and 168 transitions. Word has length 79 [2020-10-28 08:47:33,759 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 08:47:33,759 INFO L481 AbstractCegarLoop]: Abstraction has 149 states and 168 transitions. [2020-10-28 08:47:33,759 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-28 08:47:33,760 INFO L276 IsEmpty]: Start isEmpty. Operand 149 states and 168 transitions. [2020-10-28 08:47:33,761 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2020-10-28 08:47:33,762 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 08:47:33,762 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 08:47:33,762 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-28 08:47:33,762 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 08:47:33,763 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 08:47:33,763 INFO L82 PathProgramCache]: Analyzing trace with hash 11247135, now seen corresponding path program 4 times [2020-10-28 08:47:33,763 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 08:47:33,764 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [688227047] [2020-10-28 08:47:33,764 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 08:47:33,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:47:33,795 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:47:33,828 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:47:33,913 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:47:33,957 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:47:33,979 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:47:34,015 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:47:34,459 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:47:38,794 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:47:38,796 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 89 [2020-10-28 08:47:38,796 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-28 08:47:38,797 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5010 [2020-10-28 08:47:38,797 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:47:38,797 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:47:38,797 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-28 08:47:38,798 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-28 08:47:38,798 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 66 [2020-10-28 08:47:38,798 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 08:47:38,930 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 08:47:38,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:47:38,934 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:47:38,939 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:47:38,939 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 08:47:38,939 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 08:47:38,940 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-28 08:47:38,940 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:47:38,940 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:47:38,940 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 08:47:38,941 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 08:47:38,941 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 08:47:38,941 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 08:47:38,968 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 9 proven. 4 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2020-10-28 08:47:38,969 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [688227047] [2020-10-28 08:47:38,970 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 08:47:38,970 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-10-28 08:47:38,971 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [258275442] [2020-10-28 08:47:38,972 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-28 08:47:38,972 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 08:47:38,972 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-28 08:47:38,973 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2020-10-28 08:47:38,973 INFO L87 Difference]: Start difference. First operand 149 states and 168 transitions. Second operand 10 states. [2020-10-28 08:47:39,665 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 08:47:39,665 INFO L93 Difference]: Finished difference Result 251 states and 280 transitions. [2020-10-28 08:47:39,666 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-28 08:47:39,666 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 79 [2020-10-28 08:47:39,667 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 08:47:39,668 INFO L225 Difference]: With dead ends: 251 [2020-10-28 08:47:39,668 INFO L226 Difference]: Without dead ends: 111 [2020-10-28 08:47:39,671 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=48, Invalid=134, Unknown=0, NotChecked=0, Total=182 [2020-10-28 08:47:39,672 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 111 states. [2020-10-28 08:47:39,701 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 111 to 100. [2020-10-28 08:47:39,701 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 100 states. [2020-10-28 08:47:39,702 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 100 states to 100 states and 110 transitions. [2020-10-28 08:47:39,703 INFO L78 Accepts]: Start accepts. Automaton has 100 states and 110 transitions. Word has length 79 [2020-10-28 08:47:39,707 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 08:47:39,707 INFO L481 AbstractCegarLoop]: Abstraction has 100 states and 110 transitions. [2020-10-28 08:47:39,707 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-28 08:47:39,708 INFO L276 IsEmpty]: Start isEmpty. Operand 100 states and 110 transitions. [2020-10-28 08:47:39,712 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2020-10-28 08:47:39,713 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 08:47:39,713 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 08:47:39,713 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-28 08:47:39,713 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 08:47:39,714 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 08:47:39,716 INFO L82 PathProgramCache]: Analyzing trace with hash 486600819, now seen corresponding path program 5 times [2020-10-28 08:47:39,717 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 08:47:39,717 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2125690014] [2020-10-28 08:47:39,717 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 08:47:39,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:47:39,987 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:47:41,823 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:47:43,935 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:47:46,270 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:47:46,271 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 109 [2020-10-28 08:47:46,271 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-28 08:47:46,271 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6420 [2020-10-28 08:47:46,271 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:47:46,272 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:47:46,272 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 64 [2020-10-28 08:47:46,272 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-28 08:47:46,272 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 93 [2020-10-28 08:47:46,272 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 08:47:47,979 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 08:47:47,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:47:47,985 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:47:47,989 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:47:47,989 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 08:47:47,989 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 08:47:47,990 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-28 08:47:47,990 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:47:47,990 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:47:47,990 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 08:47:47,990 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 08:47:47,991 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 08:47:47,991 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:47:48,085 INFO L134 CoverageAnalysis]: Checked inductivity of 99 backedges. 0 proven. 90 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2020-10-28 08:47:48,086 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2125690014] [2020-10-28 08:47:48,086 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 08:47:48,087 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25] total 25 [2020-10-28 08:47:48,087 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1468512177] [2020-10-28 08:47:48,088 INFO L461 AbstractCegarLoop]: Interpolant automaton has 25 states [2020-10-28 08:47:48,088 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 08:47:48,088 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2020-10-28 08:47:48,089 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=541, Unknown=0, NotChecked=0, Total=600 [2020-10-28 08:47:48,089 INFO L87 Difference]: Start difference. First operand 100 states and 110 transitions. Second operand 25 states. [2020-10-28 08:47:49,854 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 08:47:49,855 INFO L93 Difference]: Finished difference Result 180 states and 199 transitions. [2020-10-28 08:47:49,855 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-10-28 08:47:49,856 INFO L78 Accepts]: Start accepts. Automaton has 25 states. Word has length 99 [2020-10-28 08:47:49,857 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 08:47:49,860 INFO L225 Difference]: With dead ends: 180 [2020-10-28 08:47:49,860 INFO L226 Difference]: Without dead ends: 174 [2020-10-28 08:47:49,861 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 69 GetRequests, 24 SyntacticMatches, 20 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 181 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=69, Invalid=633, Unknown=0, NotChecked=0, Total=702 [2020-10-28 08:47:49,862 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 174 states. [2020-10-28 08:47:49,879 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 174 to 169. [2020-10-28 08:47:49,879 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 169 states. [2020-10-28 08:47:49,882 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 169 states to 169 states and 188 transitions. [2020-10-28 08:47:49,882 INFO L78 Accepts]: Start accepts. Automaton has 169 states and 188 transitions. Word has length 99 [2020-10-28 08:47:49,882 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 08:47:49,883 INFO L481 AbstractCegarLoop]: Abstraction has 169 states and 188 transitions. [2020-10-28 08:47:49,883 INFO L482 AbstractCegarLoop]: Interpolant automaton has 25 states. [2020-10-28 08:47:49,883 INFO L276 IsEmpty]: Start isEmpty. Operand 169 states and 188 transitions. [2020-10-28 08:47:49,885 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2020-10-28 08:47:49,885 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 08:47:49,885 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 08:47:49,885 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-28 08:47:49,886 INFO L429 AbstractCegarLoop]: === Iteration 8 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 08:47:49,886 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 08:47:49,886 INFO L82 PathProgramCache]: Analyzing trace with hash -1595511819, now seen corresponding path program 6 times [2020-10-28 08:47:49,887 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 08:47:49,887 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [737572999] [2020-10-28 08:47:49,887 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 08:47:49,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:47:49,932 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:47:50,036 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:47:50,098 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:47:50,148 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:47:50,173 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:47:50,345 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:47:52,707 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:47:54,916 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:47:54,917 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-28 08:47:54,917 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-28 08:47:54,917 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-10-28 08:47:54,917 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:47:54,917 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:47:54,917 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-28 08:47:54,917 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 36 [2020-10-28 08:47:54,918 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 42 [2020-10-28 08:47:54,918 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:47:55,061 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 08:47:55,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:47:55,065 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:47:55,068 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:47:55,068 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 08:47:55,069 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 08:47:55,069 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 08:47:55,069 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:47:55,069 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:47:55,069 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 08:47:55,070 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 08:47:55,070 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 08:47:55,070 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:47:55,091 INFO L134 CoverageAnalysis]: Checked inductivity of 106 backedges. 9 proven. 16 refuted. 0 times theorem prover too weak. 81 trivial. 0 not checked. [2020-10-28 08:47:55,092 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [737572999] [2020-10-28 08:47:55,092 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 08:47:55,093 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-10-28 08:47:55,093 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1984342873] [2020-10-28 08:47:55,094 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-28 08:47:55,094 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 08:47:55,095 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-28 08:47:55,095 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=99, Unknown=0, NotChecked=0, Total=132 [2020-10-28 08:47:55,095 INFO L87 Difference]: Start difference. First operand 169 states and 188 transitions. Second operand 12 states. [2020-10-28 08:47:56,703 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 08:47:56,704 INFO L93 Difference]: Finished difference Result 341 states and 387 transitions. [2020-10-28 08:47:56,704 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-10-28 08:47:56,704 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 101 [2020-10-28 08:47:56,705 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 08:47:56,706 INFO L225 Difference]: With dead ends: 341 [2020-10-28 08:47:56,706 INFO L226 Difference]: Without dead ends: 202 [2020-10-28 08:47:56,708 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 70 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=113, Invalid=349, Unknown=0, NotChecked=0, Total=462 [2020-10-28 08:47:56,708 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 202 states. [2020-10-28 08:47:56,728 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 202 to 187. [2020-10-28 08:47:56,729 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 187 states. [2020-10-28 08:47:56,730 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 187 states to 187 states and 206 transitions. [2020-10-28 08:47:56,730 INFO L78 Accepts]: Start accepts. Automaton has 187 states and 206 transitions. Word has length 101 [2020-10-28 08:47:56,731 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 08:47:56,731 INFO L481 AbstractCegarLoop]: Abstraction has 187 states and 206 transitions. [2020-10-28 08:47:56,731 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-28 08:47:56,731 INFO L276 IsEmpty]: Start isEmpty. Operand 187 states and 206 transitions. [2020-10-28 08:47:56,733 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2020-10-28 08:47:56,733 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 08:47:56,733 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 08:47:56,734 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-28 08:47:56,734 INFO L429 AbstractCegarLoop]: === Iteration 9 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 08:47:56,734 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 08:47:56,735 INFO L82 PathProgramCache]: Analyzing trace with hash 820422069, now seen corresponding path program 7 times [2020-10-28 08:47:56,735 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 08:47:56,735 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2068261636] [2020-10-28 08:47:56,735 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 08:47:56,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:47:56,777 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:47:56,800 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:47:56,825 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:47:56,848 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:47:56,879 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:47:56,906 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:47:57,850 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:48:01,777 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:48:01,777 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-28 08:48:01,777 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-28 08:48:01,777 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5010 [2020-10-28 08:48:01,777 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:48:01,778 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:48:01,778 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-28 08:48:01,778 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-28 08:48:01,778 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 88 [2020-10-28 08:48:01,778 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:48:01,926 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 08:48:01,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:48:01,931 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:48:01,935 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:48:01,935 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 08:48:01,935 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 08:48:01,935 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-28 08:48:01,936 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:48:01,936 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:48:01,936 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 08:48:01,936 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 08:48:01,937 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 08:48:01,937 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 08:48:01,957 INFO L134 CoverageAnalysis]: Checked inductivity of 106 backedges. 16 proven. 9 refuted. 0 times theorem prover too weak. 81 trivial. 0 not checked. [2020-10-28 08:48:01,958 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2068261636] [2020-10-28 08:48:01,958 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 08:48:01,958 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-10-28 08:48:01,965 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1019125979] [2020-10-28 08:48:01,966 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-28 08:48:01,966 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 08:48:01,967 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-28 08:48:01,968 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=99, Unknown=0, NotChecked=0, Total=132 [2020-10-28 08:48:01,968 INFO L87 Difference]: Start difference. First operand 187 states and 206 transitions. Second operand 12 states. [2020-10-28 08:48:02,897 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 08:48:02,897 INFO L93 Difference]: Finished difference Result 311 states and 340 transitions. [2020-10-28 08:48:02,898 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-10-28 08:48:02,898 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 101 [2020-10-28 08:48:02,899 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 08:48:02,899 INFO L225 Difference]: With dead ends: 311 [2020-10-28 08:48:02,900 INFO L226 Difference]: Without dead ends: 133 [2020-10-28 08:48:02,901 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=69, Invalid=203, Unknown=0, NotChecked=0, Total=272 [2020-10-28 08:48:02,901 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 133 states. [2020-10-28 08:48:02,911 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 133 to 122. [2020-10-28 08:48:02,912 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 122 states. [2020-10-28 08:48:02,912 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 122 states to 122 states and 132 transitions. [2020-10-28 08:48:02,913 INFO L78 Accepts]: Start accepts. Automaton has 122 states and 132 transitions. Word has length 101 [2020-10-28 08:48:02,913 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 08:48:02,913 INFO L481 AbstractCegarLoop]: Abstraction has 122 states and 132 transitions. [2020-10-28 08:48:02,913 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-28 08:48:02,913 INFO L276 IsEmpty]: Start isEmpty. Operand 122 states and 132 transitions. [2020-10-28 08:48:02,915 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2020-10-28 08:48:02,915 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 08:48:02,915 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 08:48:02,915 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-28 08:48:02,916 INFO L429 AbstractCegarLoop]: === Iteration 10 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 08:48:02,916 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 08:48:02,916 INFO L82 PathProgramCache]: Analyzing trace with hash -1822158583, now seen corresponding path program 8 times [2020-10-28 08:48:02,916 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 08:48:02,917 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [502922630] [2020-10-28 08:48:02,917 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 08:48:03,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:48:03,140 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:48:05,730 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:48:08,105 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:48:08,105 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 131 [2020-10-28 08:48:08,106 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 08:48:08,106 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5068 [2020-10-28 08:48:08,106 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:48:08,106 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:48:08,106 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 90 [2020-10-28 08:48:08,107 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-28 08:48:08,107 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 115 [2020-10-28 08:48:08,107 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:48:16,738 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 08:48:16,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:48:16,748 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:48:16,751 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:48:16,751 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 08:48:16,752 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 08:48:16,752 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-28 08:48:16,752 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:48:16,752 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:48:16,752 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 08:48:16,753 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 08:48:16,753 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 08:48:16,753 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 08:48:16,857 INFO L134 CoverageAnalysis]: Checked inductivity of 176 backedges. 0 proven. 176 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 08:48:16,858 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [502922630] [2020-10-28 08:48:16,858 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 08:48:16,858 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [71] total 71 [2020-10-28 08:48:16,859 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1237522588] [2020-10-28 08:48:16,859 INFO L461 AbstractCegarLoop]: Interpolant automaton has 71 states [2020-10-28 08:48:16,859 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 08:48:16,860 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 71 interpolants. [2020-10-28 08:48:16,862 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=337, Invalid=4633, Unknown=0, NotChecked=0, Total=4970 [2020-10-28 08:48:16,862 INFO L87 Difference]: Start difference. First operand 122 states and 132 transitions. Second operand 71 states. [2020-10-28 08:48:17,989 WARN L193 SmtUtils]: Spent 259.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 66 [2020-10-28 08:48:18,676 WARN L193 SmtUtils]: Spent 238.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 64 [2020-10-28 08:48:20,070 WARN L193 SmtUtils]: Spent 266.00 ms on a formula simplification. DAG size of input: 88 DAG size of output: 71 [2020-10-28 08:48:20,508 WARN L193 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 58 [2020-10-28 08:48:21,159 WARN L193 SmtUtils]: Spent 271.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 72 [2020-10-28 08:48:21,499 WARN L193 SmtUtils]: Spent 178.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 60 [2020-10-28 08:48:22,347 WARN L193 SmtUtils]: Spent 253.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 67 [2020-10-28 08:48:23,271 WARN L193 SmtUtils]: Spent 227.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 61 [2020-10-28 08:48:23,984 WARN L193 SmtUtils]: Spent 233.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 64 [2020-10-28 08:48:24,407 WARN L193 SmtUtils]: Spent 132.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 55 [2020-10-28 08:48:24,870 WARN L193 SmtUtils]: Spent 272.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 69 [2020-10-28 08:48:25,180 WARN L193 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 12 [2020-10-28 08:48:25,474 WARN L193 SmtUtils]: Spent 116.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 20 [2020-10-28 08:48:32,141 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 08:48:32,142 INFO L93 Difference]: Finished difference Result 354 states and 399 transitions. [2020-10-28 08:48:32,143 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 68 states. [2020-10-28 08:48:32,143 INFO L78 Accepts]: Start accepts. Automaton has 71 states. Word has length 121 [2020-10-28 08:48:32,143 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 08:48:32,148 INFO L225 Difference]: With dead ends: 354 [2020-10-28 08:48:32,148 INFO L226 Difference]: Without dead ends: 347 [2020-10-28 08:48:32,152 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 133 GetRequests, 10 SyntacticMatches, 14 SemanticMatches, 109 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3507 ImplicationChecksByTransitivity, 15.7s TimeCoverageRelationStatistics Valid=784, Invalid=11426, Unknown=0, NotChecked=0, Total=12210 [2020-10-28 08:48:32,153 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 347 states. [2020-10-28 08:48:32,180 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 347 to 319. [2020-10-28 08:48:32,181 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 319 states. [2020-10-28 08:48:32,182 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 319 states to 319 states and 358 transitions. [2020-10-28 08:48:32,183 INFO L78 Accepts]: Start accepts. Automaton has 319 states and 358 transitions. Word has length 121 [2020-10-28 08:48:32,183 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 08:48:32,183 INFO L481 AbstractCegarLoop]: Abstraction has 319 states and 358 transitions. [2020-10-28 08:48:32,183 INFO L482 AbstractCegarLoop]: Interpolant automaton has 71 states. [2020-10-28 08:48:32,183 INFO L276 IsEmpty]: Start isEmpty. Operand 319 states and 358 transitions. [2020-10-28 08:48:32,185 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2020-10-28 08:48:32,185 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 08:48:32,186 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 08:48:32,186 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-28 08:48:32,186 INFO L429 AbstractCegarLoop]: === Iteration 11 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 08:48:32,187 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 08:48:32,187 INFO L82 PathProgramCache]: Analyzing trace with hash -1694238517, now seen corresponding path program 9 times [2020-10-28 08:48:32,187 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 08:48:32,187 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [342220065] [2020-10-28 08:48:32,187 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 08:48:32,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:48:32,236 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:48:32,279 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:48:32,356 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:48:32,452 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:48:32,483 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:48:32,536 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:48:33,806 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:48:37,229 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:48:37,229 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 133 [2020-10-28 08:48:37,230 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-28 08:48:37,230 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5013 [2020-10-28 08:48:37,230 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:48:37,230 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:48:37,230 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-28 08:48:37,231 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-28 08:48:37,231 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 110 [2020-10-28 08:48:37,231 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:48:37,428 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 08:48:37,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:48:37,432 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:48:37,435 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:48:37,436 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 08:48:37,436 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 08:48:37,436 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-28 08:48:37,437 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:48:37,437 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:48:37,437 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 08:48:37,438 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 08:48:37,438 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 08:48:37,438 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 08:48:37,477 INFO L134 CoverageAnalysis]: Checked inductivity of 185 backedges. 18 proven. 23 refuted. 0 times theorem prover too weak. 144 trivial. 0 not checked. [2020-10-28 08:48:37,478 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [342220065] [2020-10-28 08:48:37,478 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 08:48:37,478 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2020-10-28 08:48:37,479 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [727904926] [2020-10-28 08:48:37,480 INFO L461 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-10-28 08:48:37,481 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 08:48:37,481 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-10-28 08:48:37,482 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=135, Unknown=0, NotChecked=0, Total=182 [2020-10-28 08:48:37,482 INFO L87 Difference]: Start difference. First operand 319 states and 358 transitions. Second operand 14 states. [2020-10-28 08:48:38,778 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 08:48:38,778 INFO L93 Difference]: Finished difference Result 624 states and 697 transitions. [2020-10-28 08:48:38,779 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-10-28 08:48:38,779 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 123 [2020-10-28 08:48:38,780 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 08:48:38,781 INFO L225 Difference]: With dead ends: 624 [2020-10-28 08:48:38,782 INFO L226 Difference]: Without dead ends: 241 [2020-10-28 08:48:38,783 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 61 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=83, Invalid=259, Unknown=0, NotChecked=0, Total=342 [2020-10-28 08:48:38,784 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 241 states. [2020-10-28 08:48:38,798 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 241 to 222. [2020-10-28 08:48:38,799 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 222 states. [2020-10-28 08:48:38,800 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 222 states to 222 states and 240 transitions. [2020-10-28 08:48:38,800 INFO L78 Accepts]: Start accepts. Automaton has 222 states and 240 transitions. Word has length 123 [2020-10-28 08:48:38,800 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 08:48:38,800 INFO L481 AbstractCegarLoop]: Abstraction has 222 states and 240 transitions. [2020-10-28 08:48:38,800 INFO L482 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-10-28 08:48:38,801 INFO L276 IsEmpty]: Start isEmpty. Operand 222 states and 240 transitions. [2020-10-28 08:48:38,802 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2020-10-28 08:48:38,802 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 08:48:38,802 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 08:48:38,802 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-28 08:48:38,802 INFO L429 AbstractCegarLoop]: === Iteration 12 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 08:48:38,803 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 08:48:38,803 INFO L82 PathProgramCache]: Analyzing trace with hash 163789645, now seen corresponding path program 10 times [2020-10-28 08:48:38,803 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 08:48:38,804 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [754074641] [2020-10-28 08:48:38,804 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 08:48:38,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:48:38,851 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:48:38,900 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:48:38,941 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:48:38,979 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:48:39,090 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:48:39,251 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:48:43,846 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:48:43,847 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 135 [2020-10-28 08:48:43,847 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-28 08:48:43,847 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5014 [2020-10-28 08:48:43,847 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:48:43,847 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:48:43,847 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-28 08:48:43,847 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 24 [2020-10-28 08:48:43,848 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 62 [2020-10-28 08:48:43,848 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:48:44,036 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 08:48:44,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:48:44,040 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:48:44,042 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:48:44,042 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 08:48:44,043 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 08:48:44,043 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 08:48:44,043 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:48:44,043 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:48:44,043 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 08:48:44,043 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 08:48:44,043 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 08:48:44,044 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:48:44,062 INFO L134 CoverageAnalysis]: Checked inductivity of 194 backedges. 16 proven. 25 refuted. 0 times theorem prover too weak. 153 trivial. 0 not checked. [2020-10-28 08:48:44,062 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [754074641] [2020-10-28 08:48:44,063 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 08:48:44,063 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2020-10-28 08:48:44,063 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1721204635] [2020-10-28 08:48:44,063 INFO L461 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-10-28 08:48:44,063 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 08:48:44,064 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-10-28 08:48:44,064 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=137, Unknown=0, NotChecked=0, Total=182 [2020-10-28 08:48:44,064 INFO L87 Difference]: Start difference. First operand 222 states and 240 transitions. Second operand 14 states. [2020-10-28 08:48:45,410 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 08:48:45,411 INFO L93 Difference]: Finished difference Result 230 states and 248 transitions. [2020-10-28 08:48:45,412 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-10-28 08:48:45,412 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 125 [2020-10-28 08:48:45,413 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 08:48:45,414 INFO L225 Difference]: With dead ends: 230 [2020-10-28 08:48:45,414 INFO L226 Difference]: Without dead ends: 144 [2020-10-28 08:48:45,415 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 87 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=142, Invalid=458, Unknown=0, NotChecked=0, Total=600 [2020-10-28 08:48:45,415 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 144 states. [2020-10-28 08:48:45,450 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 144 to 144. [2020-10-28 08:48:45,450 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 144 states. [2020-10-28 08:48:45,451 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 144 states to 144 states and 154 transitions. [2020-10-28 08:48:45,451 INFO L78 Accepts]: Start accepts. Automaton has 144 states and 154 transitions. Word has length 125 [2020-10-28 08:48:45,451 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 08:48:45,451 INFO L481 AbstractCegarLoop]: Abstraction has 144 states and 154 transitions. [2020-10-28 08:48:45,452 INFO L482 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-10-28 08:48:45,452 INFO L276 IsEmpty]: Start isEmpty. Operand 144 states and 154 transitions. [2020-10-28 08:48:45,453 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2020-10-28 08:48:45,453 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 08:48:45,454 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 08:48:45,454 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-28 08:48:45,454 INFO L429 AbstractCegarLoop]: === Iteration 13 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 08:48:45,454 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 08:48:45,455 INFO L82 PathProgramCache]: Analyzing trace with hash 858307871, now seen corresponding path program 11 times [2020-10-28 08:48:45,455 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 08:48:45,455 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [674312319] [2020-10-28 08:48:45,455 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 08:48:45,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:48:45,714 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:48:50,430 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:48:55,462 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:48:55,462 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 153 [2020-10-28 08:48:55,463 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 08:48:55,463 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9868 [2020-10-28 08:48:55,463 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:48:55,463 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:48:55,463 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 111 [2020-10-28 08:48:55,463 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-28 08:48:55,464 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 137 [2020-10-28 08:48:55,464 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:49:09,028 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 08:49:09,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:49:09,034 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:49:09,036 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:49:09,037 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 08:49:09,037 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 08:49:09,037 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 08:49:09,037 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:49:09,037 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:49:09,037 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 08:49:09,038 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 08:49:09,038 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 08:49:09,038 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:49:09,173 INFO L134 CoverageAnalysis]: Checked inductivity of 275 backedges. 0 proven. 275 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 08:49:09,174 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [674312319] [2020-10-28 08:49:09,174 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 08:49:09,174 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [88] total 88 [2020-10-28 08:49:09,174 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [757071297] [2020-10-28 08:49:09,175 INFO L461 AbstractCegarLoop]: Interpolant automaton has 88 states [2020-10-28 08:49:09,175 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 08:49:09,175 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 88 interpolants. [2020-10-28 08:49:09,178 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=409, Invalid=7247, Unknown=0, NotChecked=0, Total=7656 [2020-10-28 08:49:09,178 INFO L87 Difference]: Start difference. First operand 144 states and 154 transitions. Second operand 88 states. [2020-10-28 08:49:26,535 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 08:49:26,535 INFO L93 Difference]: Finished difference Result 477 states and 517 transitions. [2020-10-28 08:49:26,536 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 88 states. [2020-10-28 08:49:26,536 INFO L78 Accepts]: Start accepts. Automaton has 88 states. Word has length 143 [2020-10-28 08:49:26,537 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 08:49:26,540 INFO L225 Difference]: With dead ends: 477 [2020-10-28 08:49:26,540 INFO L226 Difference]: Without dead ends: 469 [2020-10-28 08:49:26,545 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 143 GetRequests, 6 SyntacticMatches, 22 SemanticMatches, 115 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4203 ImplicationChecksByTransitivity, 17.1s TimeCoverageRelationStatistics Valid=712, Invalid=12860, Unknown=0, NotChecked=0, Total=13572 [2020-10-28 08:49:26,546 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 469 states. [2020-10-28 08:49:26,574 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 469 to 355. [2020-10-28 08:49:26,574 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 355 states. [2020-10-28 08:49:26,576 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 355 states to 355 states and 384 transitions. [2020-10-28 08:49:26,576 INFO L78 Accepts]: Start accepts. Automaton has 355 states and 384 transitions. Word has length 143 [2020-10-28 08:49:26,577 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 08:49:26,577 INFO L481 AbstractCegarLoop]: Abstraction has 355 states and 384 transitions. [2020-10-28 08:49:26,577 INFO L482 AbstractCegarLoop]: Interpolant automaton has 88 states. [2020-10-28 08:49:26,577 INFO L276 IsEmpty]: Start isEmpty. Operand 355 states and 384 transitions. [2020-10-28 08:49:26,579 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2020-10-28 08:49:26,579 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 08:49:26,580 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 08:49:26,580 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-28 08:49:26,580 INFO L429 AbstractCegarLoop]: === Iteration 14 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 08:49:26,580 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 08:49:26,581 INFO L82 PathProgramCache]: Analyzing trace with hash 1548613473, now seen corresponding path program 12 times [2020-10-28 08:49:26,581 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 08:49:26,581 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2022883377] [2020-10-28 08:49:26,581 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 08:49:26,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:49:26,636 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:49:26,726 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:49:26,759 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:49:26,785 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:49:26,853 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:49:26,886 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:49:29,363 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:49:31,615 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:49:31,615 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 155 [2020-10-28 08:49:31,615 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-28 08:49:31,615 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-10-28 08:49:31,615 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:49:31,616 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:49:31,616 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-10-28 08:49:31,616 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-28 08:49:31,616 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 132 [2020-10-28 08:49:31,616 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:49:31,903 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 08:49:31,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:49:31,907 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:49:31,910 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:49:31,911 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 08:49:31,911 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 08:49:31,911 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-28 08:49:31,911 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:49:31,911 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:49:31,912 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 08:49:31,912 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 08:49:31,912 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 08:49:31,912 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:49:31,935 INFO L134 CoverageAnalysis]: Checked inductivity of 286 backedges. 36 proven. 25 refuted. 0 times theorem prover too weak. 225 trivial. 0 not checked. [2020-10-28 08:49:31,936 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2022883377] [2020-10-28 08:49:31,936 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 08:49:31,936 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2020-10-28 08:49:31,936 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [440631250] [2020-10-28 08:49:31,937 INFO L461 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-10-28 08:49:31,937 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 08:49:31,937 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-10-28 08:49:31,938 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=181, Unknown=0, NotChecked=0, Total=240 [2020-10-28 08:49:31,938 INFO L87 Difference]: Start difference. First operand 355 states and 384 transitions. Second operand 16 states. [2020-10-28 08:49:33,984 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 08:49:33,985 INFO L93 Difference]: Finished difference Result 712 states and 775 transitions. [2020-10-28 08:49:33,986 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-10-28 08:49:33,986 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 145 [2020-10-28 08:49:33,987 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 08:49:33,990 INFO L225 Difference]: With dead ends: 712 [2020-10-28 08:49:33,990 INFO L226 Difference]: Without dead ends: 279 [2020-10-28 08:49:33,991 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 81 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=123, Invalid=383, Unknown=0, NotChecked=0, Total=506 [2020-10-28 08:49:33,992 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 279 states. [2020-10-28 08:49:34,012 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 279 to 260. [2020-10-28 08:49:34,012 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 260 states. [2020-10-28 08:49:34,013 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 260 states to 260 states and 278 transitions. [2020-10-28 08:49:34,014 INFO L78 Accepts]: Start accepts. Automaton has 260 states and 278 transitions. Word has length 145 [2020-10-28 08:49:34,014 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 08:49:34,014 INFO L481 AbstractCegarLoop]: Abstraction has 260 states and 278 transitions. [2020-10-28 08:49:34,014 INFO L482 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-10-28 08:49:34,014 INFO L276 IsEmpty]: Start isEmpty. Operand 260 states and 278 transitions. [2020-10-28 08:49:34,016 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 148 [2020-10-28 08:49:34,016 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 08:49:34,016 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 08:49:34,017 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-10-28 08:49:34,017 INFO L429 AbstractCegarLoop]: === Iteration 15 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 08:49:34,017 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 08:49:34,017 INFO L82 PathProgramCache]: Analyzing trace with hash 1640639587, now seen corresponding path program 13 times [2020-10-28 08:49:34,018 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 08:49:34,018 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1390676363] [2020-10-28 08:49:34,018 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 08:49:34,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:49:34,062 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:49:34,095 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:49:34,162 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:49:34,193 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:49:34,245 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:49:34,554 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:49:39,050 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:49:39,051 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 157 [2020-10-28 08:49:39,051 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-28 08:49:39,051 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5003 [2020-10-28 08:49:39,051 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:49:39,051 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:49:39,051 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-10-28 08:49:39,051 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-28 08:49:39,051 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 88 [2020-10-28 08:49:39,051 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:49:39,310 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 08:49:39,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:49:39,314 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:49:39,316 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:49:39,316 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 08:49:39,316 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 08:49:39,316 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 08:49:39,316 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:49:39,316 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:49:39,317 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 08:49:39,317 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 08:49:39,317 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 08:49:39,317 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:49:39,335 INFO L134 CoverageAnalysis]: Checked inductivity of 297 backedges. 25 proven. 36 refuted. 0 times theorem prover too weak. 236 trivial. 0 not checked. [2020-10-28 08:49:39,336 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1390676363] [2020-10-28 08:49:39,336 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 08:49:39,336 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2020-10-28 08:49:39,336 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [653103401] [2020-10-28 08:49:39,337 INFO L461 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-10-28 08:49:39,337 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 08:49:39,337 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-10-28 08:49:39,337 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=181, Unknown=0, NotChecked=0, Total=240 [2020-10-28 08:49:39,338 INFO L87 Difference]: Start difference. First operand 260 states and 278 transitions. Second operand 16 states. [2020-10-28 08:49:41,125 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 08:49:41,125 INFO L93 Difference]: Finished difference Result 268 states and 286 transitions. [2020-10-28 08:49:41,126 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2020-10-28 08:49:41,127 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 147 [2020-10-28 08:49:41,127 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 08:49:41,129 INFO L225 Difference]: With dead ends: 268 [2020-10-28 08:49:41,129 INFO L226 Difference]: Without dead ends: 166 [2020-10-28 08:49:41,130 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 123 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=189, Invalid=623, Unknown=0, NotChecked=0, Total=812 [2020-10-28 08:49:41,130 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 166 states. [2020-10-28 08:49:41,144 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 166 to 166. [2020-10-28 08:49:41,144 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 166 states. [2020-10-28 08:49:41,145 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 166 states to 166 states and 176 transitions. [2020-10-28 08:49:41,145 INFO L78 Accepts]: Start accepts. Automaton has 166 states and 176 transitions. Word has length 147 [2020-10-28 08:49:41,145 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 08:49:41,146 INFO L481 AbstractCegarLoop]: Abstraction has 166 states and 176 transitions. [2020-10-28 08:49:41,146 INFO L482 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-10-28 08:49:41,146 INFO L276 IsEmpty]: Start isEmpty. Operand 166 states and 176 transitions. [2020-10-28 08:49:41,147 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 166 [2020-10-28 08:49:41,148 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 08:49:41,148 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 08:49:41,148 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-10-28 08:49:41,148 INFO L429 AbstractCegarLoop]: === Iteration 16 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 08:49:41,149 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 08:49:41,149 INFO L82 PathProgramCache]: Analyzing trace with hash -760654667, now seen corresponding path program 14 times [2020-10-28 08:49:41,149 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 08:49:41,149 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1374812631] [2020-10-28 08:49:41,149 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 08:49:41,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:49:41,540 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:49:48,549 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:49:48,549 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 175 [2020-10-28 08:49:48,549 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 08:49:48,550 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7183 [2020-10-28 08:49:48,550 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:49:48,550 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:49:48,550 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 128 [2020-10-28 08:49:48,550 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-28 08:49:48,550 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 159 [2020-10-28 08:49:48,551 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:49:54,449 WARN L193 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 44 DAG size of output: 31 [2020-10-28 08:49:54,703 WARN L193 SmtUtils]: Spent 119.00 ms on a formula simplification. DAG size of input: 52 DAG size of output: 43 [2020-10-28 08:49:55,743 WARN L193 SmtUtils]: Spent 120.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 27 [2020-10-28 08:49:56,009 WARN L193 SmtUtils]: Spent 132.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 31 [2020-10-28 08:49:56,313 WARN L193 SmtUtils]: Spent 151.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 25 [2020-10-28 08:49:58,291 WARN L193 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 36 [2020-10-28 08:49:58,608 WARN L193 SmtUtils]: Spent 127.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 50 [2020-10-28 08:49:58,965 WARN L193 SmtUtils]: Spent 132.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 49 [2020-10-28 08:49:59,300 WARN L193 SmtUtils]: Spent 149.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 51 [2020-10-28 08:50:00,584 WARN L193 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 37 [2020-10-28 08:50:00,901 WARN L193 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 52 DAG size of output: 43 [2020-10-28 08:50:01,212 WARN L193 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 38 [2020-10-28 08:50:02,842 WARN L193 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 44 [2020-10-28 08:50:03,161 WARN L193 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 46 [2020-10-28 08:50:03,485 WARN L193 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 50 [2020-10-28 08:50:05,105 WARN L193 SmtUtils]: Spent 116.00 ms on a formula simplification. DAG size of input: 47 DAG size of output: 39 [2020-10-28 08:50:10,447 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 08:50:10,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:50:10,453 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:50:10,455 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:50:10,456 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 08:50:10,456 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 08:50:10,456 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 08:50:10,456 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:50:10,456 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:50:10,456 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 08:50:10,456 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 08:50:10,456 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 08:50:10,457 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:50:10,682 INFO L134 CoverageAnalysis]: Checked inductivity of 396 backedges. 7 proven. 353 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2020-10-28 08:50:10,682 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1374812631] [2020-10-28 08:50:10,682 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 08:50:10,683 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [84] total 84 [2020-10-28 08:50:10,683 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1142069653] [2020-10-28 08:50:10,683 INFO L461 AbstractCegarLoop]: Interpolant automaton has 84 states [2020-10-28 08:50:10,684 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 08:50:10,684 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 84 interpolants. [2020-10-28 08:50:10,686 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=452, Invalid=6520, Unknown=0, NotChecked=0, Total=6972 [2020-10-28 08:50:10,687 INFO L87 Difference]: Start difference. First operand 166 states and 176 transitions. Second operand 84 states. [2020-10-28 08:50:11,362 WARN L193 SmtUtils]: Spent 457.00 ms on a formula simplification. DAG size of input: 136 DAG size of output: 86 [2020-10-28 08:50:14,676 WARN L193 SmtUtils]: Spent 234.00 ms on a formula simplification. DAG size of input: 113 DAG size of output: 50 [2020-10-28 08:50:19,351 WARN L193 SmtUtils]: Spent 367.00 ms on a formula simplification. DAG size of input: 112 DAG size of output: 70 [2020-10-28 08:50:19,847 WARN L193 SmtUtils]: Spent 183.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 49 [2020-10-28 08:50:20,546 WARN L193 SmtUtils]: Spent 257.00 ms on a formula simplification. DAG size of input: 112 DAG size of output: 58 [2020-10-28 08:50:21,435 WARN L193 SmtUtils]: Spent 334.00 ms on a formula simplification. DAG size of input: 120 DAG size of output: 78 [2020-10-28 08:50:22,818 WARN L193 SmtUtils]: Spent 204.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 62 [2020-10-28 08:50:26,024 WARN L193 SmtUtils]: Spent 143.00 ms on a formula simplification. DAG size of input: 131 DAG size of output: 30 [2020-10-28 08:50:26,601 WARN L193 SmtUtils]: Spent 159.00 ms on a formula simplification. DAG size of input: 112 DAG size of output: 33 [2020-10-28 08:50:27,782 WARN L193 SmtUtils]: Spent 600.00 ms on a formula simplification. DAG size of input: 133 DAG size of output: 104 [2020-10-28 08:50:28,525 WARN L193 SmtUtils]: Spent 254.00 ms on a formula simplification. DAG size of input: 121 DAG size of output: 48 [2020-10-28 08:50:29,394 WARN L193 SmtUtils]: Spent 335.00 ms on a formula simplification. DAG size of input: 108 DAG size of output: 65 [2020-10-28 08:50:30,281 WARN L193 SmtUtils]: Spent 338.00 ms on a formula simplification. DAG size of input: 128 DAG size of output: 67 [2020-10-28 08:50:31,350 WARN L193 SmtUtils]: Spent 184.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 57