/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SequenceOfStatements --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=DEEPEST --traceabstraction.additional.smt.options log-additional-information=true --traceabstraction.additional.smt.options unknown-allowed=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf language data_model -i ../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_opt-floodmax.3.4.ufo.BOUNDED-6.pals.c.v+nlh-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-28 00:28:43,722 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-28 00:28:43,725 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-28 00:28:43,765 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-28 00:28:43,766 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-28 00:28:43,768 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-28 00:28:43,769 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-28 00:28:43,772 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-28 00:28:43,774 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-28 00:28:43,775 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-28 00:28:43,777 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-28 00:28:43,778 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-28 00:28:43,779 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-28 00:28:43,780 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-28 00:28:43,781 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-28 00:28:43,783 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-28 00:28:43,784 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-28 00:28:43,785 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-28 00:28:43,799 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-28 00:28:43,802 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-28 00:28:43,804 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-28 00:28:43,805 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-28 00:28:43,807 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-28 00:28:43,808 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-28 00:28:43,814 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-28 00:28:43,816 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-28 00:28:43,817 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-28 00:28:43,818 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-28 00:28:43,818 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-28 00:28:43,820 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-28 00:28:43,820 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-28 00:28:43,821 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-28 00:28:43,822 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-28 00:28:43,823 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-28 00:28:43,824 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-28 00:28:43,824 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-28 00:28:43,825 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-28 00:28:43,825 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-28 00:28:43,825 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-28 00:28:43,826 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-28 00:28:43,827 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-28 00:28:43,828 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 00:28:43,856 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-28 00:28:43,857 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-28 00:28:43,858 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-28 00:28:43,858 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-28 00:28:43,859 INFO L138 SettingsManager]: * Use SBE=true [2020-10-28 00:28:43,859 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-28 00:28:43,859 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-28 00:28:43,859 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-28 00:28:43,859 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-28 00:28:43,860 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-28 00:28:43,860 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-28 00:28:43,860 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-28 00:28:43,860 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-28 00:28:43,860 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-28 00:28:43,861 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-28 00:28:43,861 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-28 00:28:43,861 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-28 00:28:43,861 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-28 00:28:43,861 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-28 00:28:43,862 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-28 00:28:43,862 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-28 00:28:43,862 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-28 00:28:43,862 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-28 00:28:43,862 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-28 00:28:43,863 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-28 00:28:43,863 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-28 00:28:43,863 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-28 00:28:43,863 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-28 00:28:43,863 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-28 00:28:43,864 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=DEEPEST;log-additional-information=true;unknown-allowed=true; [2020-10-28 00:28:44,239 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-28 00:28:44,280 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-28 00:28:44,283 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-28 00:28:44,285 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-28 00:28:44,285 INFO L275 PluginConnector]: CDTParser initialized [2020-10-28 00:28:44,288 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_opt-floodmax.3.4.ufo.BOUNDED-6.pals.c.v+nlh-reducer.c [2020-10-28 00:28:44,385 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/b4a0330dc/14733879f35c4fef82acd6e962555ed9/FLAG854bfa009 [2020-10-28 00:28:45,166 INFO L306 CDTParser]: Found 1 translation units. [2020-10-28 00:28:45,167 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/seq-mthreaded-reduced/pals_opt-floodmax.3.4.ufo.BOUNDED-6.pals.c.v+nlh-reducer.c [2020-10-28 00:28:45,199 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/b4a0330dc/14733879f35c4fef82acd6e962555ed9/FLAG854bfa009 [2020-10-28 00:28:45,405 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/b4a0330dc/14733879f35c4fef82acd6e962555ed9 [2020-10-28 00:28:45,408 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-28 00:28:45,416 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-28 00:28:45,418 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-28 00:28:45,418 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-28 00:28:45,426 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-28 00:28:45,427 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 12:28:45" (1/1) ... [2020-10-28 00:28:45,433 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@242af7e3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 12:28:45, skipping insertion in model container [2020-10-28 00:28:45,433 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 12:28:45" (1/1) ... [2020-10-28 00:28:45,442 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-28 00:28:45,524 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-28 00:28:45,999 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-28 00:28:46,014 INFO L203 MainTranslator]: Completed pre-run [2020-10-28 00:28:46,217 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-28 00:28:46,238 INFO L208 MainTranslator]: Completed translation [2020-10-28 00:28:46,239 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 12:28:46 WrapperNode [2020-10-28 00:28:46,239 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-28 00:28:46,240 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-28 00:28:46,240 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-28 00:28:46,241 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-28 00:28:46,295 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 12:28:46" (1/1) ... [2020-10-28 00:28:46,296 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 12:28:46" (1/1) ... [2020-10-28 00:28:46,327 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 12:28:46" (1/1) ... [2020-10-28 00:28:46,327 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 12:28:46" (1/1) ... [2020-10-28 00:28:46,361 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 12:28:46" (1/1) ... [2020-10-28 00:28:46,403 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 12:28:46" (1/1) ... [2020-10-28 00:28:46,416 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 12:28:46" (1/1) ... [2020-10-28 00:28:46,433 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-28 00:28:46,434 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-28 00:28:46,439 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-28 00:28:46,439 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-28 00:28:46,440 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 12:28:46" (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 00:28:46,520 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-28 00:28:46,521 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-28 00:28:46,521 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-28 00:28:46,521 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-10-28 00:28:46,522 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-28 00:28:46,522 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-28 00:28:46,523 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-28 00:28:46,523 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-28 00:28:46,524 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-28 00:28:46,524 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2020-10-28 00:28:46,525 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2020-10-28 00:28:46,525 INFO L130 BoogieDeclarations]: Found specification of procedure assert [2020-10-28 00:28:46,525 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-10-28 00:28:46,525 INFO L130 BoogieDeclarations]: Found specification of procedure read [2020-10-28 00:28:46,525 INFO L130 BoogieDeclarations]: Found specification of procedure write [2020-10-28 00:28:46,526 INFO L130 BoogieDeclarations]: Found specification of procedure node1 [2020-10-28 00:28:46,526 INFO L130 BoogieDeclarations]: Found specification of procedure node2 [2020-10-28 00:28:46,527 INFO L130 BoogieDeclarations]: Found specification of procedure node3 [2020-10-28 00:28:46,527 INFO L130 BoogieDeclarations]: Found specification of procedure init [2020-10-28 00:28:46,527 INFO L130 BoogieDeclarations]: Found specification of procedure check [2020-10-28 00:28:46,527 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-28 00:28:46,527 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-28 00:28:46,527 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-28 00:28:46,528 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-28 00:28:46,528 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-28 00:28:46,528 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-28 00:28:46,528 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-28 00:28:48,116 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-28 00:28:48,117 INFO L298 CfgBuilder]: Removed 0 assume(true) statements. [2020-10-28 00:28:48,120 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 12:28:48 BoogieIcfgContainer [2020-10-28 00:28:48,120 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-28 00:28:48,122 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-28 00:28:48,122 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-28 00:28:48,126 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-28 00:28:48,126 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.10 12:28:45" (1/3) ... [2020-10-28 00:28:48,127 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@60aa0795 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 12:28:48, skipping insertion in model container [2020-10-28 00:28:48,128 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 12:28:46" (2/3) ... [2020-10-28 00:28:48,128 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@60aa0795 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 12:28:48, skipping insertion in model container [2020-10-28 00:28:48,128 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 12:28:48" (3/3) ... [2020-10-28 00:28:48,130 INFO L111 eAbstractionObserver]: Analyzing ICFG pals_opt-floodmax.3.4.ufo.BOUNDED-6.pals.c.v+nlh-reducer.c [2020-10-28 00:28:48,144 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-28 00:28:48,151 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-28 00:28:48,185 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-28 00:28:48,263 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-28 00:28:48,263 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-28 00:28:48,264 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-28 00:28:48,264 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-28 00:28:48,264 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-28 00:28:48,264 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-28 00:28:48,264 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-28 00:28:48,264 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-28 00:28:48,317 INFO L276 IsEmpty]: Start isEmpty. Operand 333 states. [2020-10-28 00:28:48,339 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 156 [2020-10-28 00:28:48,339 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 00:28:48,341 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 00:28:48,341 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 00:28:48,354 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 00:28:48,355 INFO L82 PathProgramCache]: Analyzing trace with hash 1244911398, now seen corresponding path program 1 times [2020-10-28 00:28:48,366 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 00:28:48,366 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [203767601] [2020-10-28 00:28:48,367 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 00:28:48,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 00:28:48,969 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:28:49,284 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:28:49,560 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:28:49,735 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:28:49,883 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:28:50,090 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:28:50,310 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:28:50,473 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:28:50,560 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:28:51,441 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:28:52,572 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:28:53,535 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:28:53,836 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 00:28:53,836 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 163 [2020-10-28 00:28:53,836 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 12 [2020-10-28 00:28:53,836 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5025 [2020-10-28 00:28:53,839 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 00:28:53,839 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 00:28:53,839 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 39 [2020-10-28 00:28:53,840 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 101 [2020-10-28 00:28:53,840 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-28 00:28:54,441 WARN L193 SmtUtils]: Spent 430.00 ms on a formula simplification that was a NOOP. DAG size: 211 [2020-10-28 00:28:54,444 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 00:28:54,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 00:28:54,459 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:28:54,475 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 00:28:54,475 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 00:28:54,475 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 00:28:54,476 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-10-28 00:28:54,476 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 00:28:54,476 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 00:28:54,476 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 00:28:54,514 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 00:28:54,515 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 38 [2020-10-28 00:28:54,610 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 00:28:54,611 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [203767601] [2020-10-28 00:28:54,613 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 00:28:54,614 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-28 00:28:54,615 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1230729394] [2020-10-28 00:28:54,621 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-28 00:28:54,621 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 00:28:54,637 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-28 00:28:54,638 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-28 00:28:54,641 INFO L87 Difference]: Start difference. First operand 333 states. Second operand 4 states. [2020-10-28 00:28:55,123 WARN L193 SmtUtils]: Spent 405.00 ms on a formula simplification that was a NOOP. DAG size: 212 [2020-10-28 00:28:57,152 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 00:28:57,152 INFO L93 Difference]: Finished difference Result 667 states and 1158 transitions. [2020-10-28 00:28:57,153 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-28 00:28:57,154 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 155 [2020-10-28 00:28:57,156 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 00:28:57,179 INFO L225 Difference]: With dead ends: 667 [2020-10-28 00:28:57,179 INFO L226 Difference]: Without dead ends: 530 [2020-10-28 00:28:57,187 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-28 00:28:57,212 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 530 states. [2020-10-28 00:28:57,336 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 530 to 527. [2020-10-28 00:28:57,339 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 527 states. [2020-10-28 00:28:57,344 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 527 states to 527 states and 784 transitions. [2020-10-28 00:28:57,346 INFO L78 Accepts]: Start accepts. Automaton has 527 states and 784 transitions. Word has length 155 [2020-10-28 00:28:57,350 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 00:28:57,350 INFO L481 AbstractCegarLoop]: Abstraction has 527 states and 784 transitions. [2020-10-28 00:28:57,351 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-28 00:28:57,351 INFO L276 IsEmpty]: Start isEmpty. Operand 527 states and 784 transitions. [2020-10-28 00:28:57,361 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 156 [2020-10-28 00:28:57,362 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 00:28:57,367 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 00:28:57,367 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-28 00:28:57,368 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 00:28:57,368 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 00:28:57,369 INFO L82 PathProgramCache]: Analyzing trace with hash 1928097310, now seen corresponding path program 1 times [2020-10-28 00:28:57,370 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 00:28:57,370 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2044462208] [2020-10-28 00:28:57,371 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 00:28:57,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 00:28:57,546 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:28:57,713 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:28:57,865 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:28:57,985 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:28:58,087 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:28:58,262 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:28:58,329 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:28:58,386 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:28:58,624 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:28:59,326 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:28:59,440 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:29:02,479 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 00:29:02,479 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 163 [2020-10-28 00:29:02,479 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 11 [2020-10-28 00:29:02,480 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5005 [2020-10-28 00:29:02,480 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 00:29:02,480 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-28 00:29:02,480 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-28 00:29:02,481 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 84 [2020-10-28 00:29:02,481 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 00:29:03,078 WARN L193 SmtUtils]: Spent 408.00 ms on a formula simplification that was a NOOP. DAG size: 211 [2020-10-28 00:29:03,080 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 00:29:03,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 00:29:03,092 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:29:03,108 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 00:29:03,109 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 00:29:03,109 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 00:29:03,109 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-10-28 00:29:03,109 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 00:29:03,110 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 00:29:03,110 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 00:29:03,110 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 00:29:03,110 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 00:29:03,219 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 00:29:03,220 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2044462208] [2020-10-28 00:29:03,220 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 00:29:03,220 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-28 00:29:03,220 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1438917320] [2020-10-28 00:29:03,222 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-28 00:29:03,222 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 00:29:03,223 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-28 00:29:03,223 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-28 00:29:03,224 INFO L87 Difference]: Start difference. First operand 527 states and 784 transitions. Second operand 5 states. [2020-10-28 00:29:05,457 WARN L193 SmtUtils]: Spent 363.00 ms on a formula simplification that was a NOOP. DAG size: 217 [2020-10-28 00:29:06,653 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 00:29:06,654 INFO L93 Difference]: Finished difference Result 1530 states and 2271 transitions. [2020-10-28 00:29:06,658 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-28 00:29:06,658 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 155 [2020-10-28 00:29:06,658 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 00:29:06,666 INFO L225 Difference]: With dead ends: 1530 [2020-10-28 00:29:06,666 INFO L226 Difference]: Without dead ends: 1024 [2020-10-28 00:29:06,671 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-28 00:29:06,673 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1024 states. [2020-10-28 00:29:06,761 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1024 to 1021. [2020-10-28 00:29:06,761 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1021 states. [2020-10-28 00:29:06,766 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1021 states to 1021 states and 1508 transitions. [2020-10-28 00:29:06,767 INFO L78 Accepts]: Start accepts. Automaton has 1021 states and 1508 transitions. Word has length 155 [2020-10-28 00:29:06,767 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 00:29:06,767 INFO L481 AbstractCegarLoop]: Abstraction has 1021 states and 1508 transitions. [2020-10-28 00:29:06,768 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-28 00:29:06,768 INFO L276 IsEmpty]: Start isEmpty. Operand 1021 states and 1508 transitions. [2020-10-28 00:29:06,775 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 157 [2020-10-28 00:29:06,775 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 00:29:06,776 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 00:29:06,776 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-28 00:29:06,776 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 00:29:06,781 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 00:29:06,782 INFO L82 PathProgramCache]: Analyzing trace with hash 1426994752, now seen corresponding path program 1 times [2020-10-28 00:29:06,782 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 00:29:06,784 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [610151745] [2020-10-28 00:29:06,784 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 00:29:06,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 00:29:06,835 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:29:06,899 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:29:07,031 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:29:07,113 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:29:07,211 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:29:07,287 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:29:07,360 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:29:07,426 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:29:08,762 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:29:10,021 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:29:11,830 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 00:29:11,831 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 164 [2020-10-28 00:29:11,831 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 10 [2020-10-28 00:29:11,831 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5011 [2020-10-28 00:29:11,831 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 00:29:11,831 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-28 00:29:11,832 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-28 00:29:11,832 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 21 [2020-10-28 00:29:11,832 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 00:29:12,328 WARN L193 SmtUtils]: Spent 379.00 ms on a formula simplification that was a NOOP. DAG size: 211 [2020-10-28 00:29:12,330 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 00:29:12,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 00:29:12,340 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:29:12,351 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 00:29:12,352 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 00:29:12,352 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 00:29:12,352 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-28 00:29:12,352 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 00:29:12,352 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 00:29:12,353 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 00:29:12,353 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 00:29:12,353 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 00:29:12,404 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 00:29:12,404 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [610151745] [2020-10-28 00:29:12,404 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 00:29:12,405 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-28 00:29:12,405 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1868977755] [2020-10-28 00:29:12,406 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-28 00:29:12,406 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 00:29:12,406 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-28 00:29:12,407 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-28 00:29:12,407 INFO L87 Difference]: Start difference. First operand 1021 states and 1508 transitions. Second operand 5 states. [2020-10-28 00:29:14,275 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 00:29:14,275 INFO L93 Difference]: Finished difference Result 2025 states and 2990 transitions. [2020-10-28 00:29:14,276 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-28 00:29:14,276 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 156 [2020-10-28 00:29:14,277 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 00:29:14,287 INFO L225 Difference]: With dead ends: 2025 [2020-10-28 00:29:14,288 INFO L226 Difference]: Without dead ends: 1021 [2020-10-28 00:29:14,292 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-28 00:29:14,294 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1021 states. [2020-10-28 00:29:14,353 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1021 to 1021. [2020-10-28 00:29:14,354 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1021 states. [2020-10-28 00:29:14,359 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1021 states to 1021 states and 1504 transitions. [2020-10-28 00:29:14,359 INFO L78 Accepts]: Start accepts. Automaton has 1021 states and 1504 transitions. Word has length 156 [2020-10-28 00:29:14,360 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 00:29:14,360 INFO L481 AbstractCegarLoop]: Abstraction has 1021 states and 1504 transitions. [2020-10-28 00:29:14,360 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-28 00:29:14,360 INFO L276 IsEmpty]: Start isEmpty. Operand 1021 states and 1504 transitions. [2020-10-28 00:29:14,363 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 158 [2020-10-28 00:29:14,363 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 00:29:14,364 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 00:29:14,364 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-28 00:29:14,364 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 00:29:14,364 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 00:29:14,365 INFO L82 PathProgramCache]: Analyzing trace with hash 1438777059, now seen corresponding path program 1 times [2020-10-28 00:29:14,365 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 00:29:14,365 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [483776454] [2020-10-28 00:29:14,365 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 00:29:14,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 00:29:14,435 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:29:14,499 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:29:14,584 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:29:14,692 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:29:14,765 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:29:14,831 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:29:14,891 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:29:14,949 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:29:15,420 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:29:16,187 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:29:16,345 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:29:16,506 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:29:19,433 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 00:29:19,434 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 165 [2020-10-28 00:29:19,434 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 12 [2020-10-28 00:29:19,434 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5024 [2020-10-28 00:29:19,434 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 00:29:19,435 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 00:29:19,435 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-10-28 00:29:19,435 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 51 [2020-10-28 00:29:19,435 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 00:29:19,867 WARN L193 SmtUtils]: Spent 353.00 ms on a formula simplification that was a NOOP. DAG size: 211 [2020-10-28 00:29:19,868 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 00:29:19,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 00:29:19,878 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:29:19,889 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 00:29:19,890 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 00:29:19,890 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 00:29:19,890 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-28 00:29:19,890 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 00:29:19,890 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 00:29:19,891 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 00:29:19,891 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 00:29:19,891 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 00:29:19,953 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 00:29:19,954 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [483776454] [2020-10-28 00:29:19,954 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 00:29:19,955 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-28 00:29:19,955 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1059517509] [2020-10-28 00:29:19,955 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-28 00:29:19,956 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 00:29:19,956 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-28 00:29:19,957 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-28 00:29:19,957 INFO L87 Difference]: Start difference. First operand 1021 states and 1504 transitions. Second operand 4 states. [2020-10-28 00:29:22,719 WARN L193 SmtUtils]: Spent 397.00 ms on a formula simplification that was a NOOP. DAG size: 216 [2020-10-28 00:29:23,809 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 00:29:23,809 INFO L93 Difference]: Finished difference Result 2357 states and 3487 transitions. [2020-10-28 00:29:23,810 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-28 00:29:23,810 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 157 [2020-10-28 00:29:23,811 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 00:29:23,819 INFO L225 Difference]: With dead ends: 2357 [2020-10-28 00:29:23,820 INFO L226 Difference]: Without dead ends: 1504 [2020-10-28 00:29:23,822 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-28 00:29:23,824 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1504 states. [2020-10-28 00:29:23,907 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1504 to 1501. [2020-10-28 00:29:23,907 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1501 states. [2020-10-28 00:29:23,915 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1501 states to 1501 states and 2183 transitions. [2020-10-28 00:29:23,915 INFO L78 Accepts]: Start accepts. Automaton has 1501 states and 2183 transitions. Word has length 157 [2020-10-28 00:29:23,915 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 00:29:23,916 INFO L481 AbstractCegarLoop]: Abstraction has 1501 states and 2183 transitions. [2020-10-28 00:29:23,916 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-28 00:29:23,916 INFO L276 IsEmpty]: Start isEmpty. Operand 1501 states and 2183 transitions. [2020-10-28 00:29:23,919 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 159 [2020-10-28 00:29:23,919 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 00:29:23,920 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 00:29:23,920 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-28 00:29:23,920 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 00:29:23,921 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 00:29:23,921 INFO L82 PathProgramCache]: Analyzing trace with hash 1160770430, now seen corresponding path program 1 times [2020-10-28 00:29:23,921 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 00:29:23,921 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [549082640] [2020-10-28 00:29:23,921 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 00:29:23,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 00:29:23,974 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:29:24,044 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:29:24,139 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:29:24,256 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:29:24,340 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:29:24,415 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:29:24,480 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:29:24,565 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:29:24,812 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:29:24,965 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:29:25,885 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:29:28,961 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 00:29:28,962 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 166 [2020-10-28 00:29:28,962 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 11 [2020-10-28 00:29:28,962 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5008 [2020-10-28 00:29:28,962 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 00:29:28,962 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 00:29:28,963 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 51 [2020-10-28 00:29:28,963 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-28 00:29:28,963 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 00:29:29,394 WARN L193 SmtUtils]: Spent 370.00 ms on a formula simplification that was a NOOP. DAG size: 211 [2020-10-28 00:29:29,395 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 00:29:29,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 00:29:29,405 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:29:29,416 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 00:29:29,417 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 00:29:29,417 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 00:29:29,417 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-28 00:29:29,417 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 00:29:29,418 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 00:29:29,418 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 00:29:29,418 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 00:29:29,418 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 00:29:29,466 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 00:29:29,467 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [549082640] [2020-10-28 00:29:29,467 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 00:29:29,468 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-28 00:29:29,468 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1822710281] [2020-10-28 00:29:29,472 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-28 00:29:29,472 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 00:29:29,484 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-28 00:29:29,485 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-28 00:29:29,485 INFO L87 Difference]: Start difference. First operand 1501 states and 2183 transitions. Second operand 4 states. [2020-10-28 00:29:32,108 WARN L193 SmtUtils]: Spent 416.00 ms on a formula simplification that was a NOOP. DAG size: 216 [2020-10-28 00:29:32,243 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 00:29:32,243 INFO L93 Difference]: Finished difference Result 3263 states and 4877 transitions. [2020-10-28 00:29:32,244 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-28 00:29:32,244 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 158 [2020-10-28 00:29:32,244 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 00:29:32,256 INFO L225 Difference]: With dead ends: 3263 [2020-10-28 00:29:32,256 INFO L226 Difference]: Without dead ends: 1950 [2020-10-28 00:29:32,260 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-28 00:29:32,263 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1950 states. [2020-10-28 00:29:32,393 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1950 to 1917. [2020-10-28 00:29:32,393 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1917 states. [2020-10-28 00:29:32,403 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1917 states to 1917 states and 2862 transitions. [2020-10-28 00:29:32,404 INFO L78 Accepts]: Start accepts. Automaton has 1917 states and 2862 transitions. Word has length 158 [2020-10-28 00:29:32,404 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 00:29:32,404 INFO L481 AbstractCegarLoop]: Abstraction has 1917 states and 2862 transitions. [2020-10-28 00:29:32,405 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-28 00:29:32,405 INFO L276 IsEmpty]: Start isEmpty. Operand 1917 states and 2862 transitions. [2020-10-28 00:29:32,409 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 162 [2020-10-28 00:29:32,409 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 00:29:32,410 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 00:29:32,410 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-28 00:29:32,410 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 00:29:32,411 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 00:29:32,411 INFO L82 PathProgramCache]: Analyzing trace with hash 189310874, now seen corresponding path program 1 times [2020-10-28 00:29:32,411 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 00:29:32,411 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [588519777] [2020-10-28 00:29:32,412 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 00:29:32,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 00:29:32,515 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:29:32,605 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:29:32,685 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:29:32,744 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:29:32,799 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:29:32,855 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:29:32,906 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:29:32,946 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:29:32,985 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:29:33,653 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:29:34,770 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:29:35,057 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:29:37,493 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 00:29:37,493 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 169 [2020-10-28 00:29:37,493 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 12 [2020-10-28 00:29:37,493 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5019 [2020-10-28 00:29:37,494 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 00:29:37,494 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-28 00:29:37,494 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-28 00:29:37,494 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 83 [2020-10-28 00:29:37,494 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 00:29:37,966 WARN L193 SmtUtils]: Spent 358.00 ms on a formula simplification that was a NOOP. DAG size: 211 [2020-10-28 00:29:37,967 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 00:29:37,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 00:29:37,976 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:29:37,987 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 00:29:37,988 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 00:29:37,988 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 00:29:37,988 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-28 00:29:37,988 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 00:29:37,988 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 00:29:37,988 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 00:29:37,988 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 00:29:37,989 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 00:29:38,063 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 00:29:38,063 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [588519777] [2020-10-28 00:29:38,063 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 00:29:38,064 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-28 00:29:38,064 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [585794552] [2020-10-28 00:29:38,064 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-28 00:29:38,065 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 00:29:38,065 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-28 00:29:38,065 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-28 00:29:38,066 INFO L87 Difference]: Start difference. First operand 1917 states and 2862 transitions. Second operand 5 states. [2020-10-28 00:29:40,496 WARN L193 SmtUtils]: Spent 408.00 ms on a formula simplification that was a NOOP. DAG size: 217 [2020-10-28 00:29:41,604 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 00:29:41,605 INFO L93 Difference]: Finished difference Result 4924 states and 7349 transitions. [2020-10-28 00:29:41,605 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-28 00:29:41,605 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 161 [2020-10-28 00:29:41,606 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 00:29:41,621 INFO L225 Difference]: With dead ends: 4924 [2020-10-28 00:29:41,622 INFO L226 Difference]: Without dead ends: 3072 [2020-10-28 00:29:41,628 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-28 00:29:41,632 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3072 states. [2020-10-28 00:29:41,803 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3072 to 3068. [2020-10-28 00:29:41,804 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3068 states. [2020-10-28 00:29:41,816 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3068 states to 3068 states and 4546 transitions. [2020-10-28 00:29:41,817 INFO L78 Accepts]: Start accepts. Automaton has 3068 states and 4546 transitions. Word has length 161 [2020-10-28 00:29:41,817 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 00:29:41,817 INFO L481 AbstractCegarLoop]: Abstraction has 3068 states and 4546 transitions. [2020-10-28 00:29:41,817 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-28 00:29:41,818 INFO L276 IsEmpty]: Start isEmpty. Operand 3068 states and 4546 transitions. [2020-10-28 00:29:41,822 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 163 [2020-10-28 00:29:41,822 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 00:29:41,823 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 00:29:41,823 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-28 00:29:41,824 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 00:29:41,824 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 00:29:41,824 INFO L82 PathProgramCache]: Analyzing trace with hash -1161416995, now seen corresponding path program 1 times [2020-10-28 00:29:41,825 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 00:29:41,825 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [804090915] [2020-10-28 00:29:41,825 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 00:29:41,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 00:29:41,860 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:29:41,901 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:29:41,967 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:29:42,088 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:29:42,200 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:29:42,271 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:29:42,327 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:29:42,377 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:29:42,425 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:29:42,584 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:29:42,810 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:29:42,961 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:29:44,292 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:29:44,395 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:29:44,475 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:29:46,854 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 00:29:46,854 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 170 [2020-10-28 00:29:46,854 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 15 [2020-10-28 00:29:46,854 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5005 [2020-10-28 00:29:46,854 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 00:29:46,855 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-28 00:29:46,855 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-10-28 00:29:46,855 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-10-28 00:29:46,855 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 00:29:47,273 WARN L193 SmtUtils]: Spent 338.00 ms on a formula simplification that was a NOOP. DAG size: 211 [2020-10-28 00:29:47,275 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 00:29:47,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 00:29:47,283 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:29:47,290 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 00:29:47,290 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 00:29:47,290 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 00:29:47,290 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-28 00:29:47,290 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 00:29:47,291 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 00:29:47,291 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 00:29:47,291 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 00:29:47,291 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 00:29:47,331 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 00:29:47,331 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [804090915] [2020-10-28 00:29:47,331 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 00:29:47,332 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-28 00:29:47,332 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [165700066] [2020-10-28 00:29:47,332 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-28 00:29:47,333 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 00:29:47,333 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-28 00:29:47,333 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-28 00:29:47,333 INFO L87 Difference]: Start difference. First operand 3068 states and 4546 transitions. Second operand 5 states. [2020-10-28 00:29:49,187 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 00:29:49,187 INFO L93 Difference]: Finished difference Result 6107 states and 9048 transitions. [2020-10-28 00:29:49,188 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-28 00:29:49,188 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 162 [2020-10-28 00:29:49,188 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 00:29:49,258 INFO L225 Difference]: With dead ends: 6107 [2020-10-28 00:29:49,258 INFO L226 Difference]: Without dead ends: 3066 [2020-10-28 00:29:49,265 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-28 00:29:49,269 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3066 states. [2020-10-28 00:29:49,441 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3066 to 3066. [2020-10-28 00:29:49,441 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3066 states. [2020-10-28 00:29:49,452 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3066 states to 3066 states and 4541 transitions. [2020-10-28 00:29:49,453 INFO L78 Accepts]: Start accepts. Automaton has 3066 states and 4541 transitions. Word has length 162 [2020-10-28 00:29:49,453 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 00:29:49,453 INFO L481 AbstractCegarLoop]: Abstraction has 3066 states and 4541 transitions. [2020-10-28 00:29:49,453 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-28 00:29:49,453 INFO L276 IsEmpty]: Start isEmpty. Operand 3066 states and 4541 transitions. [2020-10-28 00:29:49,458 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 164 [2020-10-28 00:29:49,458 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 00:29:49,458 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 00:29:49,459 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-28 00:29:49,459 INFO L429 AbstractCegarLoop]: === Iteration 8 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 00:29:49,459 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 00:29:49,460 INFO L82 PathProgramCache]: Analyzing trace with hash -1549917487, now seen corresponding path program 1 times [2020-10-28 00:29:49,460 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 00:29:49,460 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1022880940] [2020-10-28 00:29:49,460 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 00:29:49,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 00:29:49,523 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:29:49,563 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:29:49,630 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:29:49,719 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:29:49,770 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:29:49,819 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:29:49,866 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:29:49,907 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:29:50,065 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:29:50,262 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:29:51,974 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:29:52,177 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:29:53,705 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:29:53,822 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:29:54,542 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 00:29:54,542 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 171 [2020-10-28 00:29:54,542 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 14 [2020-10-28 00:29:54,543 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5044 [2020-10-28 00:29:54,543 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 00:29:54,543 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 00:29:54,543 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-10-28 00:29:54,543 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 62 [2020-10-28 00:29:54,543 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 00:29:54,951 WARN L193 SmtUtils]: Spent 356.00 ms on a formula simplification that was a NOOP. DAG size: 211 [2020-10-28 00:29:54,954 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 00:29:54,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 00:29:54,961 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:29:54,967 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 00:29:54,967 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 00:29:54,967 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 00:29:54,967 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-28 00:29:54,967 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 00:29:54,967 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 00:29:54,968 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 00:29:54,968 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 00:29:54,968 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 00:29:55,003 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 00:29:55,003 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1022880940] [2020-10-28 00:29:55,003 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 00:29:55,004 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-28 00:29:55,004 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1993462186] [2020-10-28 00:29:55,004 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-28 00:29:55,004 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 00:29:55,005 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-28 00:29:55,005 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-28 00:29:55,006 INFO L87 Difference]: Start difference. First operand 3066 states and 4541 transitions. Second operand 4 states. [2020-10-28 00:29:56,877 WARN L193 SmtUtils]: Spent 402.00 ms on a formula simplification that was a NOOP. DAG size: 216 [2020-10-28 00:29:57,607 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 00:29:57,608 INFO L93 Difference]: Finished difference Result 7373 states and 10955 transitions. [2020-10-28 00:29:57,608 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-28 00:29:57,608 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 163 [2020-10-28 00:29:57,609 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 00:29:57,629 INFO L225 Difference]: With dead ends: 7373 [2020-10-28 00:29:57,629 INFO L226 Difference]: Without dead ends: 4730 [2020-10-28 00:29:57,636 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-28 00:29:57,643 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4730 states. [2020-10-28 00:29:57,908 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4730 to 4727. [2020-10-28 00:29:57,908 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4727 states. [2020-10-28 00:29:57,919 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4727 states to 4727 states and 6899 transitions. [2020-10-28 00:29:57,920 INFO L78 Accepts]: Start accepts. Automaton has 4727 states and 6899 transitions. Word has length 163 [2020-10-28 00:29:57,920 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 00:29:57,920 INFO L481 AbstractCegarLoop]: Abstraction has 4727 states and 6899 transitions. [2020-10-28 00:29:57,920 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-28 00:29:57,920 INFO L276 IsEmpty]: Start isEmpty. Operand 4727 states and 6899 transitions. [2020-10-28 00:29:57,927 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 168 [2020-10-28 00:29:57,927 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 00:29:57,927 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 00:29:57,927 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-28 00:29:57,928 INFO L429 AbstractCegarLoop]: === Iteration 9 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 00:29:57,928 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 00:29:57,928 INFO L82 PathProgramCache]: Analyzing trace with hash 436414166, now seen corresponding path program 1 times [2020-10-28 00:29:57,928 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 00:29:57,929 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [637614723] [2020-10-28 00:29:57,929 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 00:29:57,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 00:29:57,986 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:29:58,032 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:29:58,123 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:29:58,234 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:29:58,376 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:29:58,453 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:29:58,554 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:29:58,939 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:29:59,057 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:29:59,153 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:29:59,298 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:30:02,965 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 00:30:02,966 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 175 [2020-10-28 00:30:02,966 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 11 [2020-10-28 00:30:02,966 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-10-28 00:30:02,966 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 00:30:02,966 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 00:30:02,966 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 55 [2020-10-28 00:30:02,966 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-10-28 00:30:02,967 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 00:30:03,393 WARN L193 SmtUtils]: Spent 384.00 ms on a formula simplification that was a NOOP. DAG size: 211 [2020-10-28 00:30:03,394 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 00:30:03,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 00:30:03,403 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:30:03,417 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 00:30:03,417 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 00:30:03,417 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 00:30:03,417 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-28 00:30:03,417 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 00:30:03,417 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 00:30:03,417 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 00:30:03,418 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 00:30:03,418 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 00:30:03,445 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 00:30:03,446 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [637614723] [2020-10-28 00:30:03,446 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 00:30:03,446 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-28 00:30:03,446 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [464674693] [2020-10-28 00:30:03,447 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-28 00:30:03,447 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 00:30:03,447 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-28 00:30:03,448 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-28 00:30:03,448 INFO L87 Difference]: Start difference. First operand 4727 states and 6899 transitions. Second operand 4 states. [2020-10-28 00:30:05,874 WARN L193 SmtUtils]: Spent 405.00 ms on a formula simplification that was a NOOP. DAG size: 216 [2020-10-28 00:30:06,378 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 00:30:06,379 INFO L93 Difference]: Finished difference Result 11599 states and 17243 transitions. [2020-10-28 00:30:06,379 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-28 00:30:06,379 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 167 [2020-10-28 00:30:06,380 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 00:30:06,416 INFO L225 Difference]: With dead ends: 11599 [2020-10-28 00:30:06,416 INFO L226 Difference]: Without dead ends: 7376 [2020-10-28 00:30:06,427 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-28 00:30:06,437 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7376 states. [2020-10-28 00:30:06,879 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7376 to 6661. [2020-10-28 00:30:06,879 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6661 states. [2020-10-28 00:30:06,894 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6661 states to 6661 states and 9983 transitions. [2020-10-28 00:30:06,894 INFO L78 Accepts]: Start accepts. Automaton has 6661 states and 9983 transitions. Word has length 167 [2020-10-28 00:30:06,895 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 00:30:06,895 INFO L481 AbstractCegarLoop]: Abstraction has 6661 states and 9983 transitions. [2020-10-28 00:30:06,895 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-28 00:30:06,895 INFO L276 IsEmpty]: Start isEmpty. Operand 6661 states and 9983 transitions. [2020-10-28 00:30:06,903 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 168 [2020-10-28 00:30:06,903 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 00:30:06,903 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 00:30:06,904 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-28 00:30:06,904 INFO L429 AbstractCegarLoop]: === Iteration 10 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 00:30:06,904 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 00:30:06,904 INFO L82 PathProgramCache]: Analyzing trace with hash 909186134, now seen corresponding path program 1 times [2020-10-28 00:30:06,905 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 00:30:06,905 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [26658166] [2020-10-28 00:30:06,905 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 00:30:06,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 00:30:06,969 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:30:07,029 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:30:07,111 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:30:07,197 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:30:07,283 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:30:07,326 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:30:07,362 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:30:07,510 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:30:07,792 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:30:08,321 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:30:08,472 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:30:08,655 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:30:11,731 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:30:11,860 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:30:11,949 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 00:30:11,949 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 175 [2020-10-28 00:30:11,949 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 14 [2020-10-28 00:30:11,950 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5005 [2020-10-28 00:30:11,950 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 00:30:11,950 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 00:30:11,950 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 60 [2020-10-28 00:30:11,950 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 00:30:11,950 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 00:30:12,363 WARN L193 SmtUtils]: Spent 375.00 ms on a formula simplification that was a NOOP. DAG size: 211 [2020-10-28 00:30:12,365 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 00:30:12,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 00:30:12,373 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:30:12,383 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 00:30:12,383 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 00:30:12,383 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 00:30:12,383 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-28 00:30:12,383 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 00:30:12,384 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 00:30:12,384 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 00:30:12,384 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 00:30:12,384 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 00:30:12,421 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 00:30:12,421 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [26658166] [2020-10-28 00:30:12,422 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 00:30:12,422 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-28 00:30:12,422 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1738512627] [2020-10-28 00:30:12,423 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-28 00:30:12,423 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 00:30:12,423 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-28 00:30:12,423 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-28 00:30:12,424 INFO L87 Difference]: Start difference. First operand 6661 states and 9983 transitions. Second operand 4 states. [2020-10-28 00:30:12,858 WARN L193 SmtUtils]: Spent 385.00 ms on a formula simplification that was a NOOP. DAG size: 213 [2020-10-28 00:30:15,163 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 00:30:15,164 INFO L93 Difference]: Finished difference Result 17374 states and 26541 transitions. [2020-10-28 00:30:15,164 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-28 00:30:15,164 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 167 [2020-10-28 00:30:15,164 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 00:30:15,197 INFO L225 Difference]: With dead ends: 17374 [2020-10-28 00:30:15,197 INFO L226 Difference]: Without dead ends: 12079 [2020-10-28 00:30:15,209 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-28 00:30:15,223 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12079 states. [2020-10-28 00:30:16,010 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12079 to 12076. [2020-10-28 00:30:16,010 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12076 states. [2020-10-28 00:30:16,036 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12076 states to 12076 states and 18267 transitions. [2020-10-28 00:30:16,037 INFO L78 Accepts]: Start accepts. Automaton has 12076 states and 18267 transitions. Word has length 167 [2020-10-28 00:30:16,037 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 00:30:16,037 INFO L481 AbstractCegarLoop]: Abstraction has 12076 states and 18267 transitions. [2020-10-28 00:30:16,037 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-28 00:30:16,037 INFO L276 IsEmpty]: Start isEmpty. Operand 12076 states and 18267 transitions. [2020-10-28 00:30:16,048 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 168 [2020-10-28 00:30:16,048 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 00:30:16,048 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 00:30:16,049 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-28 00:30:16,049 INFO L429 AbstractCegarLoop]: === Iteration 11 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 00:30:16,049 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 00:30:16,049 INFO L82 PathProgramCache]: Analyzing trace with hash -658483941, now seen corresponding path program 1 times [2020-10-28 00:30:16,050 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 00:30:16,050 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1093408573] [2020-10-28 00:30:16,050 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 00:30:16,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 00:30:16,144 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:30:16,210 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:30:16,287 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:30:16,338 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:30:16,381 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:30:16,421 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:30:16,456 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:30:16,488 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:30:16,712 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:30:17,019 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:30:18,301 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:30:19,848 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:30:19,976 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:30:21,104 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 00:30:21,104 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 175 [2020-10-28 00:30:21,104 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 13 [2020-10-28 00:30:21,104 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-10-28 00:30:21,104 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 00:30:21,104 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-28 00:30:21,105 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 40 [2020-10-28 00:30:21,105 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 118 [2020-10-28 00:30:21,105 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 00:30:21,547 WARN L193 SmtUtils]: Spent 375.00 ms on a formula simplification that was a NOOP. DAG size: 211 [2020-10-28 00:30:21,548 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 00:30:21,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 00:30:21,559 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:30:21,572 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 00:30:21,572 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 00:30:21,573 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 00:30:21,573 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-28 00:30:21,573 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 00:30:21,573 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 00:30:21,573 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 00:30:21,573 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 00:30:21,574 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 00:30:21,626 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 00:30:21,627 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1093408573] [2020-10-28 00:30:21,627 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 00:30:21,627 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-28 00:30:21,627 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1046629005] [2020-10-28 00:30:21,628 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-28 00:30:21,628 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 00:30:21,629 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-28 00:30:21,629 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-28 00:30:21,629 INFO L87 Difference]: Start difference. First operand 12076 states and 18267 transitions. Second operand 5 states. [2020-10-28 00:30:22,046 WARN L193 SmtUtils]: Spent 368.00 ms on a formula simplification that was a NOOP. DAG size: 212 [2020-10-28 00:30:23,681 WARN L193 SmtUtils]: Spent 369.00 ms on a formula simplification that was a NOOP. DAG size: 214 [2020-10-28 00:30:25,076 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 00:30:25,076 INFO L93 Difference]: Finished difference Result 31966 states and 49330 transitions. [2020-10-28 00:30:25,076 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-28 00:30:25,077 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 167 [2020-10-28 00:30:25,077 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 00:30:25,138 INFO L225 Difference]: With dead ends: 31966 [2020-10-28 00:30:25,139 INFO L226 Difference]: Without dead ends: 22978 [2020-10-28 00:30:25,162 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2020-10-28 00:30:25,194 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22978 states. [2020-10-28 00:30:26,446 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22978 to 22975. [2020-10-28 00:30:26,447 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22975 states. [2020-10-28 00:30:26,485 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22975 states to 22975 states and 34877 transitions. [2020-10-28 00:30:26,486 INFO L78 Accepts]: Start accepts. Automaton has 22975 states and 34877 transitions. Word has length 167 [2020-10-28 00:30:26,486 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 00:30:26,486 INFO L481 AbstractCegarLoop]: Abstraction has 22975 states and 34877 transitions. [2020-10-28 00:30:26,486 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-28 00:30:26,486 INFO L276 IsEmpty]: Start isEmpty. Operand 22975 states and 34877 transitions. [2020-10-28 00:30:26,502 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 168 [2020-10-28 00:30:26,503 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 00:30:26,503 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 00:30:26,503 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-28 00:30:26,503 INFO L429 AbstractCegarLoop]: === Iteration 12 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 00:30:26,504 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 00:30:26,504 INFO L82 PathProgramCache]: Analyzing trace with hash 1950758153, now seen corresponding path program 1 times [2020-10-28 00:30:26,504 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 00:30:26,504 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2034902153] [2020-10-28 00:30:26,505 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 00:30:26,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 00:30:26,603 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:30:26,674 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:30:26,740 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:30:26,779 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:30:26,814 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:30:26,847 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:30:26,884 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:30:26,927 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:30:27,049 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:30:27,321 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:30:28,381 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:30:29,508 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:30:29,590 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:30:31,103 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:30:31,249 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:30:31,376 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:30:31,542 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:30:31,696 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 00:30:31,696 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 175 [2020-10-28 00:30:31,696 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 17 [2020-10-28 00:30:31,696 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5137 [2020-10-28 00:30:31,696 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 00:30:31,696 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-28 00:30:31,697 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-28 00:30:31,697 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 120 [2020-10-28 00:30:31,697 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 00:30:32,142 WARN L193 SmtUtils]: Spent 370.00 ms on a formula simplification that was a NOOP. DAG size: 211 [2020-10-28 00:30:32,144 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 00:30:32,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 00:30:32,151 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:30:32,157 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 00:30:32,157 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 00:30:32,157 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 00:30:32,157 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-28 00:30:32,158 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 00:30:32,158 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 00:30:32,158 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 00:30:32,158 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 00:30:32,158 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 00:30:32,209 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 00:30:32,210 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2034902153] [2020-10-28 00:30:32,210 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 00:30:32,210 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-28 00:30:32,210 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1110807329] [2020-10-28 00:30:32,211 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-28 00:30:32,211 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 00:30:32,211 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-28 00:30:32,212 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-28 00:30:32,212 INFO L87 Difference]: Start difference. First operand 22975 states and 34877 transitions. Second operand 5 states. [2020-10-28 00:30:34,479 WARN L193 SmtUtils]: Spent 365.00 ms on a formula simplification that was a NOOP. DAG size: 217 [2020-10-28 00:30:36,450 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 00:30:36,451 INFO L93 Difference]: Finished difference Result 46137 states and 69972 transitions. [2020-10-28 00:30:36,451 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-28 00:30:36,452 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 167 [2020-10-28 00:30:36,452 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 00:30:36,500 INFO L225 Difference]: With dead ends: 46137 [2020-10-28 00:30:36,500 INFO L226 Difference]: Without dead ends: 23237 [2020-10-28 00:30:36,545 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-28 00:30:36,572 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23237 states. [2020-10-28 00:30:37,993 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23237 to 23069. [2020-10-28 00:30:37,993 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23069 states. [2020-10-28 00:30:38,026 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23069 states to 23069 states and 34987 transitions. [2020-10-28 00:30:38,026 INFO L78 Accepts]: Start accepts. Automaton has 23069 states and 34987 transitions. Word has length 167 [2020-10-28 00:30:38,027 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 00:30:38,027 INFO L481 AbstractCegarLoop]: Abstraction has 23069 states and 34987 transitions. [2020-10-28 00:30:38,027 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-28 00:30:38,027 INFO L276 IsEmpty]: Start isEmpty. Operand 23069 states and 34987 transitions. [2020-10-28 00:30:38,039 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 169 [2020-10-28 00:30:38,040 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 00:30:38,040 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 00:30:38,040 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-28 00:30:38,040 INFO L429 AbstractCegarLoop]: === Iteration 13 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 00:30:38,041 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 00:30:38,041 INFO L82 PathProgramCache]: Analyzing trace with hash -1944657881, now seen corresponding path program 1 times [2020-10-28 00:30:38,041 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 00:30:38,041 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1791143101] [2020-10-28 00:30:38,041 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 00:30:38,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 00:30:38,077 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:30:38,129 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:30:38,183 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:30:38,228 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:30:38,330 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:30:38,481 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:30:38,767 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:30:38,817 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:30:40,341 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:30:40,440 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:30:40,527 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:30:40,686 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:30:41,298 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:30:43,074 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 00:30:43,074 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 176 [2020-10-28 00:30:43,074 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 13 [2020-10-28 00:30:43,074 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5009 [2020-10-28 00:30:43,074 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 00:30:43,075 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-28 00:30:43,075 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 23 [2020-10-28 00:30:43,075 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-10-28 00:30:43,075 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 00:30:43,521 WARN L193 SmtUtils]: Spent 366.00 ms on a formula simplification that was a NOOP. DAG size: 211 [2020-10-28 00:30:43,522 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 00:30:43,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 00:30:43,530 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:30:43,539 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 00:30:43,539 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 00:30:43,539 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 00:30:43,539 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-28 00:30:43,539 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 00:30:43,539 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 00:30:43,540 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 00:30:43,540 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 00:30:43,540 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 00:30:43,581 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 00:30:43,581 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1791143101] [2020-10-28 00:30:43,582 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 00:30:43,582 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-28 00:30:43,582 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1684613980] [2020-10-28 00:30:43,583 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-28 00:30:43,583 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 00:30:43,583 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-28 00:30:43,584 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-28 00:30:43,584 INFO L87 Difference]: Start difference. First operand 23069 states and 34987 transitions. Second operand 5 states. [2020-10-28 00:30:46,139 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 00:30:46,139 INFO L93 Difference]: Finished difference Result 40133 states and 60906 transitions. [2020-10-28 00:30:46,140 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-28 00:30:46,140 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 168 [2020-10-28 00:30:46,140 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 00:30:46,197 INFO L225 Difference]: With dead ends: 40133 [2020-10-28 00:30:46,197 INFO L226 Difference]: Without dead ends: 23069 [2020-10-28 00:30:46,227 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-28 00:30:46,257 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23069 states. [2020-10-28 00:30:47,662 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23069 to 23069. [2020-10-28 00:30:47,662 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23069 states. [2020-10-28 00:30:47,699 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23069 states to 23069 states and 34984 transitions. [2020-10-28 00:30:47,700 INFO L78 Accepts]: Start accepts. Automaton has 23069 states and 34984 transitions. Word has length 168 [2020-10-28 00:30:47,700 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 00:30:47,700 INFO L481 AbstractCegarLoop]: Abstraction has 23069 states and 34984 transitions. [2020-10-28 00:30:47,700 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-28 00:30:47,700 INFO L276 IsEmpty]: Start isEmpty. Operand 23069 states and 34984 transitions. [2020-10-28 00:30:47,713 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 170 [2020-10-28 00:30:47,713 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 00:30:47,714 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 00:30:47,714 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-28 00:30:47,714 INFO L429 AbstractCegarLoop]: === Iteration 14 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 00:30:47,714 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 00:30:47,715 INFO L82 PathProgramCache]: Analyzing trace with hash -68089466, now seen corresponding path program 1 times [2020-10-28 00:30:47,715 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 00:30:47,715 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [921370079] [2020-10-28 00:30:47,715 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 00:30:47,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 00:30:47,802 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:30:47,864 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:30:47,925 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:30:47,965 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:30:48,003 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:30:48,104 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:30:48,218 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:30:48,305 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:30:48,383 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:30:49,158 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:30:49,200 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:30:49,424 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:30:49,467 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:30:51,991 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:30:52,119 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:30:52,211 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:30:52,498 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:30:52,610 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:30:52,784 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 00:30:52,784 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 177 [2020-10-28 00:30:52,784 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 18 [2020-10-28 00:30:52,784 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5016 [2020-10-28 00:30:52,784 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 00:30:52,784 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-28 00:30:52,785 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-28 00:30:52,785 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 68 [2020-10-28 00:30:52,785 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 00:30:53,224 WARN L193 SmtUtils]: Spent 361.00 ms on a formula simplification that was a NOOP. DAG size: 211 [2020-10-28 00:30:53,226 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 00:30:53,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 00:30:53,232 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:30:53,241 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 00:30:53,242 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 00:30:53,242 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 00:30:53,242 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-28 00:30:53,242 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 00:30:53,242 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 00:30:53,242 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 00:30:53,242 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 00:30:53,242 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 00:30:53,282 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 00:30:53,282 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [921370079] [2020-10-28 00:30:53,282 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 00:30:53,283 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-28 00:30:53,283 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [248934700] [2020-10-28 00:30:53,283 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-28 00:30:53,283 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 00:30:53,284 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-28 00:30:53,284 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-28 00:30:53,284 INFO L87 Difference]: Start difference. First operand 23069 states and 34984 transitions. Second operand 5 states. [2020-10-28 00:30:55,646 WARN L193 SmtUtils]: Spent 341.00 ms on a formula simplification that was a NOOP. DAG size: 217 [2020-10-28 00:30:58,151 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 00:30:58,151 INFO L93 Difference]: Finished difference Result 59836 states and 90629 transitions. [2020-10-28 00:30:58,152 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-28 00:30:58,152 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 169 [2020-10-28 00:30:58,152 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 00:30:58,223 INFO L225 Difference]: With dead ends: 59836 [2020-10-28 00:30:58,223 INFO L226 Difference]: Without dead ends: 36826 [2020-10-28 00:30:58,263 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-28 00:30:58,306 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36826 states. [2020-10-28 00:31:00,358 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36826 to 36820. [2020-10-28 00:31:00,358 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36820 states. [2020-10-28 00:31:00,417 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36820 states to 36820 states and 55203 transitions. [2020-10-28 00:31:00,417 INFO L78 Accepts]: Start accepts. Automaton has 36820 states and 55203 transitions. Word has length 169 [2020-10-28 00:31:00,418 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 00:31:00,418 INFO L481 AbstractCegarLoop]: Abstraction has 36820 states and 55203 transitions. [2020-10-28 00:31:00,418 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-28 00:31:00,418 INFO L276 IsEmpty]: Start isEmpty. Operand 36820 states and 55203 transitions. [2020-10-28 00:31:00,436 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 173 [2020-10-28 00:31:00,437 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 00:31:00,437 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 00:31:00,437 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-10-28 00:31:00,437 INFO L429 AbstractCegarLoop]: === Iteration 15 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 00:31:00,438 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 00:31:00,438 INFO L82 PathProgramCache]: Analyzing trace with hash -724448072, now seen corresponding path program 1 times [2020-10-28 00:31:00,438 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 00:31:00,438 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [425318301] [2020-10-28 00:31:00,438 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 00:31:00,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 00:31:00,484 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:31:00,522 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:31:00,567 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:31:00,605 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:31:00,658 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:31:00,786 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:31:00,858 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:31:01,218 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:31:03,023 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:31:03,096 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:31:03,240 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:31:03,327 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:31:03,444 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:31:03,730 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:31:05,469 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 00:31:05,469 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 180 [2020-10-28 00:31:05,470 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 14 [2020-10-28 00:31:05,470 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-10-28 00:31:05,470 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 00:31:05,471 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 00:31:05,471 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 24 [2020-10-28 00:31:05,471 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 127 [2020-10-28 00:31:05,471 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 00:31:05,956 WARN L193 SmtUtils]: Spent 415.00 ms on a formula simplification that was a NOOP. DAG size: 211 [2020-10-28 00:31:05,957 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 00:31:05,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 00:31:05,967 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:31:05,977 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 00:31:05,978 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 00:31:05,978 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 00:31:05,978 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-28 00:31:05,978 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 00:31:05,978 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 00:31:05,978 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 00:31:05,979 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 00:31:05,979 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 00:31:06,063 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 00:31:06,064 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [425318301] [2020-10-28 00:31:06,064 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 00:31:06,064 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-28 00:31:06,064 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1850741308] [2020-10-28 00:31:06,065 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-28 00:31:06,065 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 00:31:06,065 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-28 00:31:06,065 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-28 00:31:06,066 INFO L87 Difference]: Start difference. First operand 36820 states and 55203 transitions. Second operand 4 states. [2020-10-28 00:31:08,949 WARN L193 SmtUtils]: Spent 393.00 ms on a formula simplification that was a NOOP. DAG size: 216 [2020-10-28 00:31:12,492 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 00:31:12,493 INFO L93 Difference]: Finished difference Result 100315 states and 150263 transitions. [2020-10-28 00:31:12,493 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-28 00:31:12,493 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 172 [2020-10-28 00:31:12,494 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 00:31:12,587 INFO L225 Difference]: With dead ends: 100315 [2020-10-28 00:31:12,587 INFO L226 Difference]: Without dead ends: 64630 [2020-10-28 00:31:12,636 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-28 00:31:12,699 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64630 states. [2020-10-28 00:31:16,678 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64630 to 64627. [2020-10-28 00:31:16,678 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 64627 states. [2020-10-28 00:31:16,808 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64627 states to 64627 states and 95629 transitions. [2020-10-28 00:31:16,808 INFO L78 Accepts]: Start accepts. Automaton has 64627 states and 95629 transitions. Word has length 172 [2020-10-28 00:31:16,808 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 00:31:16,808 INFO L481 AbstractCegarLoop]: Abstraction has 64627 states and 95629 transitions. [2020-10-28 00:31:16,808 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-28 00:31:16,808 INFO L276 IsEmpty]: Start isEmpty. Operand 64627 states and 95629 transitions. [2020-10-28 00:31:16,829 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 173 [2020-10-28 00:31:16,829 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 00:31:16,829 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 00:31:16,830 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-10-28 00:31:16,830 INFO L429 AbstractCegarLoop]: === Iteration 16 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 00:31:16,830 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 00:31:16,830 INFO L82 PathProgramCache]: Analyzing trace with hash -1641351659, now seen corresponding path program 1 times [2020-10-28 00:31:16,830 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 00:31:16,830 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [498833647] [2020-10-28 00:31:16,830 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 00:31:16,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 00:31:16,914 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:31:16,995 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:31:17,292 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:31:17,352 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:31:17,422 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:31:17,645 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:31:18,021 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:31:18,065 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:31:18,231 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:31:18,477 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:31:21,892 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 00:31:21,892 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 180 [2020-10-28 00:31:21,892 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 10 [2020-10-28 00:31:21,892 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5013 [2020-10-28 00:31:21,892 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 00:31:21,892 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-28 00:31:21,893 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 24 [2020-10-28 00:31:21,893 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-28 00:31:21,893 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 00:31:22,353 WARN L193 SmtUtils]: Spent 372.00 ms on a formula simplification that was a NOOP. DAG size: 211 [2020-10-28 00:31:22,354 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 00:31:22,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 00:31:22,361 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:31:22,367 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 00:31:22,368 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 00:31:22,368 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 00:31:22,368 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-28 00:31:22,368 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 00:31:22,368 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 00:31:22,368 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 00:31:22,368 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 00:31:22,368 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 00:31:22,403 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 00:31:22,403 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [498833647] [2020-10-28 00:31:22,403 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 00:31:22,403 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-28 00:31:22,403 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [901543213] [2020-10-28 00:31:22,404 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-28 00:31:22,404 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 00:31:22,405 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-28 00:31:22,405 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-28 00:31:22,405 INFO L87 Difference]: Start difference. First operand 64627 states and 95629 transitions. Second operand 5 states. [2020-10-28 00:31:27,146 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 00:31:27,147 INFO L93 Difference]: Finished difference Result 121449 states and 180025 transitions. [2020-10-28 00:31:27,147 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-28 00:31:27,147 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 172 [2020-10-28 00:31:27,148 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 00:31:27,343 INFO L225 Difference]: With dead ends: 121449 [2020-10-28 00:31:27,343 INFO L226 Difference]: Without dead ends: 57588 [2020-10-28 00:31:27,394 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-28 00:31:27,432 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57588 states. [2020-10-28 00:31:31,074 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57588 to 57587. [2020-10-28 00:31:31,074 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 57587 states. [2020-10-28 00:31:31,182 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57587 states to 57587 states and 85308 transitions. [2020-10-28 00:31:31,182 INFO L78 Accepts]: Start accepts. Automaton has 57587 states and 85308 transitions. Word has length 172 [2020-10-28 00:31:31,182 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 00:31:31,182 INFO L481 AbstractCegarLoop]: Abstraction has 57587 states and 85308 transitions. [2020-10-28 00:31:31,182 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-28 00:31:31,182 INFO L276 IsEmpty]: Start isEmpty. Operand 57587 states and 85308 transitions. [2020-10-28 00:31:31,200 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 177 [2020-10-28 00:31:31,200 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 00:31:31,201 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 00:31:31,201 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-10-28 00:31:31,201 INFO L429 AbstractCegarLoop]: === Iteration 17 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 00:31:31,201 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 00:31:31,201 INFO L82 PathProgramCache]: Analyzing trace with hash 1826118914, now seen corresponding path program 1 times [2020-10-28 00:31:31,202 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 00:31:31,202 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1966828352] [2020-10-28 00:31:31,202 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 00:31:31,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 00:31:31,243 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:31:31,279 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:31:31,327 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:31:31,406 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:31:31,461 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:31:31,984 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:31:32,241 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:31:32,355 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:31:32,474 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:31:32,758 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:31:36,236 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 00:31:36,237 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 184 [2020-10-28 00:31:36,237 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 10 [2020-10-28 00:31:36,237 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5009 [2020-10-28 00:31:36,237 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 00:31:36,237 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 00:31:36,237 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 56 [2020-10-28 00:31:36,237 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-10-28 00:31:36,237 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 00:31:36,620 WARN L193 SmtUtils]: Spent 345.00 ms on a formula simplification that was a NOOP. DAG size: 211 [2020-10-28 00:31:36,621 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 00:31:36,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 00:31:36,628 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:31:36,634 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 00:31:36,634 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 00:31:36,634 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 00:31:36,634 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-28 00:31:36,634 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 00:31:36,634 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 00:31:36,635 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 00:31:36,635 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 00:31:36,635 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 00:31:36,663 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 00:31:36,663 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1966828352] [2020-10-28 00:31:36,663 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 00:31:36,663 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-28 00:31:36,664 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1264603578] [2020-10-28 00:31:36,664 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-28 00:31:36,664 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 00:31:36,666 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-28 00:31:36,667 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-28 00:31:36,667 INFO L87 Difference]: Start difference. First operand 57587 states and 85308 transitions. Second operand 4 states. [2020-10-28 00:31:41,085 WARN L193 SmtUtils]: Spent 400.00 ms on a formula simplification that was a NOOP. DAG size: 216 [2020-10-28 00:31:44,520 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 00:31:44,521 INFO L93 Difference]: Finished difference Result 143341 states and 214158 transitions. [2020-10-28 00:31:44,521 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-28 00:31:44,521 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 176 [2020-10-28 00:31:44,522 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 00:31:44,659 INFO L225 Difference]: With dead ends: 143341 [2020-10-28 00:31:44,660 INFO L226 Difference]: Without dead ends: 94114 [2020-10-28 00:31:44,835 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-28 00:31:44,897 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 94114 states. [2020-10-28 00:31:50,368 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 94114 to 87201. [2020-10-28 00:31:50,368 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 87201 states. [2020-10-28 00:31:50,557 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 87201 states to 87201 states and 131048 transitions. [2020-10-28 00:31:50,558 INFO L78 Accepts]: Start accepts. Automaton has 87201 states and 131048 transitions. Word has length 176 [2020-10-28 00:31:50,558 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 00:31:50,558 INFO L481 AbstractCegarLoop]: Abstraction has 87201 states and 131048 transitions. [2020-10-28 00:31:50,558 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-28 00:31:50,558 INFO L276 IsEmpty]: Start isEmpty. Operand 87201 states and 131048 transitions. [2020-10-28 00:31:50,576 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 177 [2020-10-28 00:31:50,576 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 00:31:50,576 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 00:31:50,576 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-10-28 00:31:50,576 INFO L429 AbstractCegarLoop]: === Iteration 18 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 00:31:50,577 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 00:31:50,577 INFO L82 PathProgramCache]: Analyzing trace with hash -1433417657, now seen corresponding path program 1 times [2020-10-28 00:31:50,577 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 00:31:50,577 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1062833779] [2020-10-28 00:31:50,577 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 00:31:50,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 00:31:50,625 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:31:50,665 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:31:50,911 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:31:50,990 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:31:51,037 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:31:51,312 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:31:51,438 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:31:51,531 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:31:51,902 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:31:52,011 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:31:52,117 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:31:53,053 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:31:55,614 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 00:31:55,614 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 184 [2020-10-28 00:31:55,614 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 12 [2020-10-28 00:31:55,614 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5007 [2020-10-28 00:31:55,614 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 00:31:55,614 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 00:31:55,614 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 44 [2020-10-28 00:31:55,614 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 133 [2020-10-28 00:31:55,614 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 00:31:56,069 WARN L193 SmtUtils]: Spent 374.00 ms on a formula simplification that was a NOOP. DAG size: 211 [2020-10-28 00:31:56,070 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 00:31:56,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 00:31:56,080 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:31:56,090 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 00:31:56,090 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 00:31:56,090 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 00:31:56,090 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-28 00:31:56,090 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 00:31:56,090 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 00:31:56,091 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 00:31:56,091 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 00:31:56,091 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 00:31:56,137 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 00:31:56,137 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1062833779] [2020-10-28 00:31:56,137 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 00:31:56,137 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-28 00:31:56,137 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [146195778] [2020-10-28 00:31:56,138 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-28 00:31:56,138 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 00:31:56,138 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-28 00:31:56,138 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-28 00:31:56,139 INFO L87 Difference]: Start difference. First operand 87201 states and 131048 transitions. Second operand 6 states. [2020-10-28 00:31:56,609 WARN L193 SmtUtils]: Spent 405.00 ms on a formula simplification that was a NOOP. DAG size: 218 [2020-10-28 00:31:58,697 WARN L193 SmtUtils]: Spent 349.00 ms on a formula simplification that was a NOOP. DAG size: 213 [2020-10-28 00:31:59,425 WARN L193 SmtUtils]: Spent 406.00 ms on a formula simplification that was a NOOP. DAG size: 214 [2020-10-28 00:31:59,843 WARN L193 SmtUtils]: Spent 370.00 ms on a formula simplification that was a NOOP. DAG size: 216 [2020-10-28 00:32:15,541 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 00:32:15,541 INFO L93 Difference]: Finished difference Result 301244 states and 454722 transitions. [2020-10-28 00:32:15,542 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-28 00:32:15,542 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 176 [2020-10-28 00:32:15,542 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 00:32:16,183 INFO L225 Difference]: With dead ends: 301244 [2020-10-28 00:32:16,184 INFO L226 Difference]: Without dead ends: 229068 [2020-10-28 00:32:16,280 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=52, Invalid=104, Unknown=0, NotChecked=0, Total=156 [2020-10-28 00:32:16,466 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 229068 states.